FULL-LINE INDUSTRIAL CATALOG

Transcription

1 FULL-LI IUSTRIL TLOG blower silencers absorptive silencers vent/fan silencers separator silencers engine silencers industrial filters & filter/silencers accessories FULL-LI TLOG

2 Ordering Information.. bsorptive Silencers. Vent Silencers. Industrial Fan Silencers. Vacuum ump Liquid Separator-Silencers. ngine xhaust Silencers. Filters and Filter-Silencers. Table of ontents Full-Line atalog See page.. for ordering information Rotary Table of ositive ontents ote ll dimensions in inches and weights in pounds, unless otherwise indicated.

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4 . Ordering Information Ordering Rotary Information ositive Ready to order? For service in Maine, ew Hampshire, Massachusetts, Rhode Island, onnecticut, ew ork, ew Jersey, ennsylvania, elaware, Maryland, Vermont, Virginia, West Virginia, entucky, and Ohio contact an authorized Universal T representative. ortheast lakeslee quipment enter Ridge Road Westlake, OH Web: -mail: beco@blakeslee-equipment.com Telephone: -- Fax: -- J & Industrial Sales o., Inc. astgate Industrial rive Grove ity, Web: -mail: sales@jbindustrial.com Telephone: -- Fax: -- Southeast ortheast ontrols, Inc..O. ox Upper Saddle River, J Web: -mail: ryates@nciweb.net Telephone: -- Fax: -- ortheast ontrols, Inc..O. ox Round Top, Web: -mail: scottyates@nciweb.net Telephone: -- Fax: -- See pages.. for ordering information Ready to order? For service in Tennessee, orth arolina, South arolina, labama, Georgia, and Florida contact an authorized Universal T representative. egroff rocess quipment o., Inc..O. ox Memphis, T Web: -mail: depeco@aol.com Telephone: -- Fax: -- Mahan s Thermal roducts, Inc. Juniper ourt ovington, G Web: -mail: sales@mahans.com Telephone: -- Fax: -- olytech Services, Inc..O. ox harlotte, -mail: duke@polytechservices.com Telephone: -- Fax: -- Hudson ump raftsman lvd. Lakeland, FL -mail: cmccaughey@tencarva.com Telephone: -- Fax: --

5 . Rotary Ordering ositive lower Information Silencers Ordering Information See pages.. for ordering information Ready to order? For service in Minnesota, Wisconsin, Illinois, Indiana, ebraska, Iowa, ansas, Missouri, rkansas, Louisiana, and Mississippi contact an authorized Universal T representative. Ready to order? For service in Oklahoma and Texas contact an authorized Universal T representative. Midwest SO, Inc. urr Oak rive Westmont, IL Web: -mail: sales@airprocesssystems.com Telephone: -- Fax: --. mery elson ommerce Street O ox Hamel, M mail: chuckf@cemrynelson.com Telephone: -- Fax: -- etro hem quipment Jeffrey rive aton Rouge, L -mail: sales@petrochemequipment.com Telephone: -- Fax: -- South L.. ldridge Sales ompany, Inc. Richmond venue, Suite Houston, TX Web: -mail: info@eldridgesales.com Telephone: -- Fax: -- L.. ldridge Sales ompany, Inc. Milton Street, Suite allas, TX Telephone: -- Fax: -- -mail: mschmitmeyer@eldridgesales.com ynamic ulk Systems Horan rive Fenton, MO -mail: bob@dynamicbulk.com Website: Telephone: -- Fax: -- Hartsaw quipment o. S. arker Street Olathe, S Web: -mail: hartsaw@hartsaw.com Telephone: -- Fax: -- Seltech, Inc. S. Sheridan, # Tulsa, O Web: -mail: seltecok@aol.com Telephone: -- Fax: -- Mountain Fluid Technology, Inc. elson Street, Unit H Lakewood, O Web: -mail: customerservice@fluid-technology.com Telephone: -- Fax: -- orth Monsen ompany.o. ox () Salt Lake ity, UT Web: -mail: sales@northmonsen.com Telephone: -- Fax: -- Ready to order? For service in Idaho, Montana, orth akota, South akota, Wyoming, evada, Utah, olorado, rizona, and ew Mexico contact an authorized Universal T representative.

6 . Ordering Information Ordering Rotary Information ositive Ready to order? For service in Washington, Oregon, and alifornia contact an authorized Universal T representative. acific S quipment, Inc..O. ox Mercer Island, W Web: -mail: sazose@adseq.com Telephone: -- Fax: -- Mcenna ngineering el Marin eys lvd., Suite H ovato, Web: -mail: sales@mckennaengineering.com Telephone: -- Fax: -- Mcenna ngineering. ominguez Street arson, - Web: -mail: sales@mckennaengineering.com Telephone: -- Fax: -- anada Ready to order? For service outside the United States, contact our authorized Universal T global representative. McRae ngineering quipment, Ltd. tomic venue Toronto, Ontario anada MZ Web: -mail: sales@mcraeeng.com Telephone: -- Fax: -- Ramtech nterprises, Ltd. Glenwood lace ochrane, lberta anada T H -mail: gjcassie@shaw.ca Telephone: -- Fax: -- sia-acific Universal T ukit atok rescent #- restige entre Singapore Singapore hone +- siaacific@universalt.com India Universal T Survey o. // aner, une India hone + India@universalT.com urope Universal T Unit, arleyfield Hinckley Leicestershire L I hone + () urope@universalt.com United States Universal T ORORT HQURTRS Highway /.O. ox Stoughton, WI US hone + () - US@universalT.com See pages.. for ordering information

7 . Rotary ositive General Information In a closed blower discharge system, structure-borne noisesuch as that radiated by pipe wall and silencer shellmay be a consideration, particularly where a stringent, close-proximity noise specification applies. For these applications, various means are available to treat the pipe and shell radiated noise, such that most reasonable specifications may be met. For instance, it is possible to lag the silencer shell externally and reduce any shell noise contribution to below the casing and mechanical noise of the blower and driving machinery. Universal T invites your inquiries concerning special applications where, OSH or other noise specifications apply. Special applications are handled on an individual basis and recommendations are made according to specific requirements of the installation. See pages.. for ordering information Rotary ositive lowers The Rotary ositive lower is a two impeller compressor that delivers a large quantity of gas or air relative to the individual pulses. lower capacities are expressed in FM at inlet conditions (IFM). lower size is usually expressed as gear diameter by rotor length. itch Line Velocity (LV) is the peripheral velocity of the timing gearequal to the product of the gear circumference and the rotative speed of the blower, usually expressed in feet per minute (FM). The blower presents two problems: ) pulsation within the piping system and, ) noise radiation in the vicinity of the blower and piping. The importance of these relative to each other is a function of blower size and speed; both increase proportionately to the blower size and the square of the speed. ulsation is more pronounced on the discharge side. eak pulse pressures are quite severe and can result in unsilenced discharge sound power levels up to d. The inlet, although producing less severe pulsation and noise, receives equal attention since the inlet is usually open to atmosphere and the noise much more apparent. Silencers There is little question that silencers are a necessity on any blower installation. Regardless of the size or speed of the blower, silencers of some type are nearly always used. In the selection of blower silencers, there are two basic considerations: ) the silencer must be the correct size (i.e., sufficient capacity for the volume flow) and, ) the silencer must be the proper type for the application. The nominal silencer size need only be based on the gas volume, (i.e., the FM of the gas or air at the operating conditions). However, the silencer (design) must be selected with consideration of the blower size and operating speed. omplete application and capacity information is given on page.. There are two types of silencers commonly used on positive blowers: a reactive type silencer which consists of a series of expansion chambers having interconnecting tubes, a more sophisticated silencer design. is the combination chamber-absorptive type. This combination silencer is similar to the reactive type with the exception that an acoustically-packed, sound absorbing section is included, comprising an extension of the silencer connection closest to the blower. The inlet of a discharge silencer and the outlet of an inlet silencer are the ends having the packed section. third basic type of silencerthe simple, straight-through packed typeis occasionally used on blowers. This type of silencer is usually used on small, high speed machines which characteristically produce significant high frequency noise and relatively mild pulsations. The LV is normally the criterion for silencer type selection. If the blower is operating in the critical LV range, it will generate objectionable high frequency noise which may cause shell ring or tank hammer in the piping and silencer. These critical LV conditions will always require a combination chamber-absorptive silencer for satisfactory results. Inlet Silencers For inlet service, a LV of, ft/min or greater is considered critical. This transition speed is empirically established and is somewhat arbitrary, however, it is commonly accepted that blowers operating at or above, ft/min are considered critical for the purpose of inlet silencer application. Those operating below, ft/min are considered subcritical. Subcritical LV applications can usually be silenced adequately with a chamber-type silencer, such as Universal UR or UI Series. lowers operating above the critical LV of, ft/min will invariably require the RIS Series combination chamberabsorptive type silencer. Inlet Filters or Filter Silencers are commonly used on blower inlets, either individually or in series with a separate inlet silencer. lease reference the Filters and Filter Silencers section of this catalog for further information. ischarge Silencers For the more severe discharge conditions of typical blower installations, a LV of, ft/min is accepted as the critical transition speed. lowers operating below, ft/min are considered subcritical and can usually be adequately silenced on the discharge side by use of a chamber-type silencer U or UR Series. Machines operating above the ft/min transition speed will require combination chamberabsorptive silencers such as S or R Series. In some larger blower installations, piping requirements or space restrictions may preclude the use of a large, single discharge silencer such as the S or R Series. Where two or more blowers discharge into a common header, individual silencers upstream of the header are required to subdue the individual blower pulsations. Otherwise, the pulsations tend to beat with each other and can be extremely objectionable. ote: Silencers should be mounted as close to the blower as possible since any piping between the blower and silencer will radiate noise. Standard silencer connections are not designed to carry external piping or valve loads, so good piping support practices should be used to prevent stresses that cause fatigue and eventual fracture of the silencer or piping. It is also good practice to isolate the blower from the silencer with a flexible expansion joint. ontact Universal T for special design considerations where loading is a factor. ttenuation urves oise attenuation curves are given for the various models within this section. The curves represent insertion loss of airborne noise for typical applications under average conditions. It is not feasible to chart the expected performance of a silencer over a wide range of applications and conditions, therefore, the curves must be used with discretion. Structure-borne noise (see above) may be a consideration and will require separate analysis, since it is not airborne noise and not used for silencer performance rating.

8 The silencers shown below are more fully described on the individual catalog pages. These units are designed specifically for use on Rotary ositive lowers. There are fundamental similarities between blower silencers and other types, particularly reciprocating engine silencers, which also require a silencer design that provides effective pulse control as well as noise attenuation. However, blower silencers generally must be constructed more ruggedly to withstand prolonged exposure to severe pulsations produced by the blower. ll silencers described are of standard with end in, end-out design. Low or high side inlet and outlet connections are available and are described on the individual catalog pages. General Information Rotary ositive lowers.. Rotary lower ositive Silencers UI Series Inlet Silencer hamber-type inlet silencer for use on subcritical LV applications. vailable in pipe sizes " ". Smaller sizes use UR Series. vailable with side connections and mounting brackets. RIS Series Inlet Silencer ombustion chamber-absorptive type inlet silencer for critical LV applications. vailable in pipe sizes " ". Low or high side outlet and mounting brackets available on most sizes. U Series UR/UR Series ischarge Silencers hamber-type discharge silencer for use on sub-critical LV applications. vailable in pipe sizes " ". (Smaller sizes use UR Series). Low, high, or opposed side connections and mounting brackets available. See pages.. for ordering information S Series R Series ischarge Silencers ombination chamber-absorptive type discharge silencers for critical LV applications. vailable in pipe sizes " ". Low, high, or opposed side connections and mounting brackets available on most sizes. ccessories, Special Features Mounting rackets Inspection Openings ressure Vessel onstruction Oversize Flanges Special Finishes Special Materials

9 . Rotary ositive See pages.. for ordering information pplication, apacity, ressure rop ata lower Transition Speed lower Transition Speed-RM Gear Size Inlet ischarge ¹ ₂ itch Line Velocity elow Transition bove Transition,,,,,,,,,, Inlet Silencer UI, UR RIS,,,,,,,,, Silencer Model Specifications ischarge Silencer UR, U, UR S, R ressure rop oefficients Model UR, UR UI, UI, UIH RIS, RIS, RISH U, U UR, UR, URH S, S, SH R, R, RH RS, SS, URS ressure rop oefficient () Silencer Recommendations s mentioned on page. pitch line velocity (LV) is the speed of the timing gear in feet per minute (ft/min). For purposes of silencer application. LV is considered critical at, ft/min for intake and, ft/min for discharge. Table gives transition speeds in RM. lowers running at these speeds or greater will have critical LV. Operating speeds below transition will be in the sub-critical range. lowers operating in the sub-critical speed range usually require only simple chambertype silencers while those in the critical range require combination chamber-absorptive type silencers. If there is doubt, it is best to use the combination-type silencers. When gear size and operating speeds are known, the proper type silencer is easily selected. Silencer Size Selection, apacity Table gives the nominal capacity of the various size silencers. Size in this table refers to the silencer nominal size, or its inlet size. apacities are expressed in inlet FM (IFM), thus, discharge silencers are rated at higher capacities than inlet silencers since the air is compressed to reduced volume at the discharge operating pressure. Size ¹ ₂ ¹ ₂ st Temp. Silencer apacity Inlet Silencer,,,,,,,,,,,,, F SIG,,,,,,,,,,,,, F,,,,,,,,,,,,, F From Table determine whether blower RM is above or below the transition speed for critical LV. onsult Table for recommended silencer models. ressure rop The following formulas may be used to calculate pressure drop through the silencers covered in this catalog. = V Inlet: c (assumes silencer inlet is open to atmosphere) V ischarge:. c T = pressure drop through silencer, inches of water V =air velocity through silencer, ft/min* c =individual silencer restriction coefficientempirical constant (see Table ) = discharge pressure, SI (operating pressure in SIG +.) T = discharge temperature, R absolute (operating temperature in F + ) * To calculate velocity through silencer, divide flow in FM by cross-sectional area of silencer inlet diameter in square feet. apacity (Inlet FM. SI at F) ischarge Silencer SIG SIG SIG SIG,,,,,,,,,,,,, F,,,,,,,,,,,,,, F,,,,,,,,,,,,,, F

10 Typical ttenuation urve.. ttenuation, d Octave and enter Frequency, Hz Specifications UI Group hamber Type Inlet Silencer Rotary lower ositive Silencers The UI Series Inlet Silencer is a heavyduty, all welded unit constructed of carbon steel sheet and plate. It provides pulse control and silencing for most subcritical LV applications. Sizes " and larger are equipped with flanged connections drilled to hamber Type Inlet Silencers (Size) ¹ ₂ ¹ ₂ art umber UI Series L H / lb SI specifications. xterior surfaces receive a shop coat of rustinhibitive primer and may be finish painted in the field if desired. The UI Series is the basic inlet model and is the conventional end-in,end-out version. The low side inlet rain UI Series (Low Side Outlet) L H ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. model is designated UI Series and the high side inlet type is designated UIH Series. The three types are fundamentally alike and performance is identical. Mounting brackets and other options are available see page.. UIH Series (High Side Outlet) Min Sizes " " Use UR Series (page.) ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ UI Max ¹ ₂ ¹ ₂ ¹ ₂ Min ¹ ₂ ¹ ₂ ¹ ₂ UIH Max ¹ ₂ ¹ ₂ ¹ ₂ Weight,,,,,,, See pages.. for ordering information

11 . Rotary ositive Specifications RIS Group ombination hamber- bsorptive Type Inlet Silencer ttenuation, d Typical ttenuation urve Octave and enter Frequency, Hz See pages.. for ordering information The RIS Series Inlet Silencer is a heavyduty, all welded unit constructed of carbon steel sheet and plate. It features an acoustically-treated outlet and will provide pulse control and silencing suitable for critical LV applications. Sizes " and larger are equipped with flanged connections drilled to / lb SI specifications. (Size) ¹ ₂ ¹ ₂ art umber * --* L H RIS Series L H ombination hamber-bsorptive Type Inlet Silencers ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. *Specify -TT for male pipe threaded units. Smaller sizes are standard with male threaded pipe nipples. Units sized " and " are available in either flanged or male pipe threads. xterior surfaces receive a shop coat of rust inhibitive primer and may be finish painted in the field if desired. The RIS Series is the basic model, having conventional end-in, end-out configuration. RIS Series (Low Side Outlet) RIS ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ RISH Sizes " ¹ ₂" use U Series (page.) ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ³ ₄ ¹ ₄ ¹ ₂ Min FIX T FIX T FIX T FIX T ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ low side outlet version is designated RIS Series and high side outlet configuration is designated RISH Series. The three types are fundamentally alike and performance is identical. Mounting brackets and other options are availablesee page.. RISH Series (High Side Outlet) RIS Max ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ RISH Min Max ¹ ₂" THRU " VILL O SIL ORR ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Weight,,,,,,,,

12 Typical ttenuation urve.. ttenuation, d Octave and enter Frequency, Hz Specifications U Group hamber Type ischarge Silencer Rotary lower ositive Silencers The U Series ischarge Silencer is a heavy-duty, all welded unit constructed of carbon steel sheet and plate. It provides pulse control and silencing for subcritical LV applications where the higher performance of the UR Series on page. hamber Type ischarge Silencers (Size) ¹ ₂ ¹ ₂ art umber is not warranted. Sizes " and larger are equipped with flanged connections drilled to / lb SI specifications. xterior surfaces receive a shop coat of rustinhibitive primer and may be finish painted in the field if desired. The U Series is the L H U Series ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. L H rain U Series (Low Side Inlet) Sizes " " use UR Series (page.) ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ basic end-in, end-out configuration. low side inlet version is designated U Series. The two types are fundamentally alike and performance characteristics are identical. Mounting brackets and other options are availablesee page.. Min ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Max ¹ ₂ ¹ ₂ ¹ ₂ Weight,,,,,,, See pages.. for ordering information

13 . Rotary ositive Specifications UR Group UR Group hamber Type ischarge Silencer ttenuation, d Typical ttenuation urve Octave and enter Frequency, Hz ote: Sizes " " are UR Series; sizes " " are UR Series. oth series are fundamentally the same in design and the performance characteristics are identical. See pages.. for ordering information The UR/UR Series ischarge Silencer is a heavy-duty, all welded unit constructed of carbon steel sheet and plate. It provides pulse control and silencing for subcritical LV applications. Sizes " and larger are equipped with flanged connections drilled to / lb SI specifications. Smaller sizes are standard with male threaded pipe hamber Type ischarge Silencers (Size) ¹ ₂ ¹ ₂ art umber L H * --* UR, UR Series L H ¹ ₂ ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. *Specify -TT for male pipe threaded units. nipples. Units sized " and " are available in either flanged or male pipe threads. xterior surfaces receive a shop coat of rustinhibitive primer and may be finish painted in the field if desired. The UR/UR Series is the basic end-in, end-out configuration. low side inlet version is designated UR/UR Series; high side inlet is UR, UR Series (Low Side Inlet) ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ URH Series (High Side Inlet) UR, UR URH URS Min Max Min Max Min Max FIX T FIX T FIX T FIX T ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ designated URH Series; and low opposed connection is designated URS Series. The four types are fundamentally alike and performance characteristics are identical. Mounting brackets and other options are availablesee page.. URS Series (Opposed onnections) ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Weight,,,,,,,,,

14 Typical ttenuation urve.. coustical packing is suitable for F ttenuation, d Octave and enter Frequency, Hz Specifications S Group ombination hamber- bsorptive Type ischarge Silencer Rotary lower ositive Silencers The S Series ischarge Silencer is a heavy-duty, all welded unit constructed of carbon steel sheet and plate. It will provide excellent pulse control and is equipped with an acoustically-treated inlet for use on critical LV applications. Its pulse and noise performance is recommended for all but the most demanding applications, which may require the R Series on page.. Sizes " (Size) ¹ ₂ ¹ ₂ L H art umber * --* S Series rain ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. *Specify -TT for male pipe threaded units. L ¹ ₂ ¹ ₂ ¹ ₂ H and larger are equipped with flanged connections drilled to / lb SI specifications. Smaller sizes are standard with male threaded pipe nipples. Units sized " and " are available in either flanged or male pipe threads. xterior surfaces receive a shop coat of rust-inhibitive primer and may be finish painted in the field if desired. The S Series is the basic end-in, end-out S Series (Low Side Inlet) ombination hamber-bsorptive Type ischarge Silencers ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ S SH SS ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ SH Series (High Side Inlet) Sizes " and ¹ ₂" use UR Series (page.) ¹ ₄ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Min Max S Min Max ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ configuration. low side inlet is designated the S Series; high side inlet, SH Series; and low opposed connection, SS Series. The four types are fundamentally alike and performance characteristics are identical. Mounting brackets and other options are availablesee page.. ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Min Max SS Min Max ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ SS Series (Opposed onnection) ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Min Max SH Min Max ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Weight,,,,,,,, See pages.. for ordering information

15 . Typical ttenuation urve Rotary ositive Specifications R Group ombination hamber- bsorptive Type ischarge Silencer ttenuation, d Octave and enter Frequency, Hz coustical packing is suitable for F See pages.. for ordering information The R Series ischarge Silencer is a heavyduty, all welded unit constructed of carbon steel sheet and plate. It provides excellent pulse control and is equipped with an acoustically treated inlet for use on critical LV applications. ulse control and noise attenuation provided by the R Series is the ultimate and is necessary for only the most L H R Series rain ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. *Specify -TT for male pipe threaded units. demanding installations. Sizes " and larger are equipped with flanged connections drilled to / lb SI specifications. Smaller sizes are standard with male threaded pipe nipples. Units sized " and " are available in either flanged or male pipe threads. xterior surfaces receive a shop coat of rust inhibitive primer and may be finish painted in the field R Series (Low Side Inlet) ombination hamber-bsorptive Type ischarge Silencers (Size) ¹ ₂ ¹ ₂ art umber * --* L H ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ R RH RS ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ RH Series (High Side Inlet) ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ if desired. The R Series is the basic end-in, end-out configuration. low side inlet is designated the R Series; high side inlet, RH Series; and low opposed connections, RS Series. The four types are fundamentally alike and performance is identical. Mounting brackets and other options are available see page.. R Min Max Sizes " ¹ ₂" use UR Series (page.) or use U Series: (page.) FIX T FIX T FIX T FIX T ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ RS Series (Opposed onnection) RS Min Max ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ RH Min Max ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Weight,,,,,,,,,

16 Typical ttenuation urve.. ttenuation, d Octave and enter Frequency, Hz Specifications SURS Group hamber Type Multi-Use Silencer Rotary lower ositive Silencers SURS Series blower silencers are heavyduty, all welded steel construction, suitable for application as either and inlet or discharge silencer on rotary positive. These units are designed for blowers running above critical transition speed, and therefore, no acoustic packing material is included in the design. Instead, these units have a specially designed, highperformance, three chamber system which incorporates a diffuser on the blower side of the silencer units. The unit will provide excellent pulse control and is designed for the most demanding applications. Sizes smaller than four inches are equipped with standard male threaded pipe nipples, while the and larger units have flanged connections drilled to / lb SI specifications. s with other blower silencers, the SURS Series employs a high-heat aluminum paint system. SURS Series L H rain SURS Series (Low Side Inlet) The SURS is a basic end-in, end-out configuration. low-side inlet model is designated as the SURS Series; the SURS is fundamentally identical to the SURS series in both dimension and attenuation performance. oth series are designed to operate at pressures to psi. Mounting brackets, shell lagging and other accessories are available for both series of blower silencers. See pages.. for ordering information ombination hamber Type Multi-Use ischarge Silencers Model SURS- SURS-. SURS- SURS-. SURS- SURS- SURS- SURS- SURS- SURS- SURS- SURS- SURS- SURS- SURS SURS art Model art --SS --SS --SS --SS --SS* --SS* --SS --SS --SS --SS --SS --SS --SS --SS *Specify -TT for male pipe threaded units. SURS- SURS-. SURS- SURS-. SURS- SURS- SURS- SURS- SURS- SURS- SURS- SURS- SURS- SURS- --SS --SS --SS --SS --SS* --SS* --SS --SS --SS --SS --SS --SS --SS --SS L H ¹ ₂ * * Min. Max Weight ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂,,,,,

17 . Rotary ositive ccessories and Optional Features UI, RIS, I IR, IR, S, R, and SURS In addition to the standard accessories shown here, other special features such as special materials and finishes will be quoted on request. ontact Universal T with your specific requirements. See pages.. for ordering information Mounting rackets Mounting rackets or legs are available for any of the silencers in this section. Saddle type brackets for horizontal mount and angle legs for vertical mount are standard. See Spec. Sheet o.. Special design brackets will be quoted with your specifications. ressure Vessel onstruction ll silencers shown in this catalog may be fabricated in accordance with iv., Section VIIISM ode for Unfired ressure Vessels. imensions are similar to standard models, but material types and thicknesses are selected to meet code requirements. rices are quoted on application to meet your pressure and temperature conditions. Inspection Openings Inspection Openings with bolted and gasketed cover plates are available installed at the time the silencer is fabricated. They are designed to withstand the usual range of pressure encountered with blowers. One inspection opening is usually installed in each silencer chamber for cleaning or inspection. Standard sizes include: " ", " ", " ". Horizontal Oversize Flanges Frequently the blower flange size is larger than the required silencer s connection. Rather than use a larger silencer, it is usually more economical to use an oversize reducing flange on the silencer. This is the conventional piping practice and may be used on either inlet or discharge silencers. xample: a " flange size silencer has adequate capacity for a blower with a " discharge flange. flange having a drilling pattern to match the " blower flange but with a " bore to match the silencer nozzle is substituted on the silencer inlet. Two pipe sizes, (e.g. " to "), is the recommended maximum variation. rices on request. Vertical

18 Typical ttenuation urve. ttenuation, d Octave and enter Frequency, Hz F/FI Series ompact lower Inlet Filter-Silencer Filter and silencer combined in one unit. The F and FI have the acoustic capabilities of the Universal T RIS Series silencers and the filtration performance of series filters. Reduced cost, overall package size, weight, storage space, freight cost and damage. pproximately one third the size of conventional blower silencer, with the added benefit of excellent, high-efficiency filtration. Reduced overall package noise without further acoustic treatment. VersatileSuitable for inlet applications in confined areas, outdoor or indoor, without compromising acoustic or pressure drop performance. (nom.) ¹ ₂ aper -* -* lement art umber Felt -* -* *air of elements required (stacked). Wire -* -* ¹ ₈" T pressure tap L H F Series (outdoor use) W Removable weatherhood for filter element access F F F ¹ ₈" T pressure tap L H FI Series (indoor use) W Removable plate for filter element access See pages.. for ordering information Models, imensions, Weights and lements (nom.) ¹ ₂ F/FI H FM art ¹ ₂ ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ³ ₄ ³ ₄ ¹ ₂ ¹ ₂ ¹ ₂,,,, otes:. on-sm ode construction suitable for " Hg vacuum.. Weights are approximate and do no include the weight of the filter element. F W L Weight art ¹ ₄ ³ ₄ ¹ ₄ ¹ ₂ -G- -G- -G- -G- -G- -G- -G- -G- -G- FI L Weight ¹ ₂ ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ³ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ³ ₄ ³ ₄

19 . Series ompact lower Silencer This extremely compact blower silencer works as either an inlet or discharge silencer on rotary positive blowers. It is about one-third the size of a standard silencer, and reduces overall package size, cost, weight and storage space. The unit s internal pack material is suitable for temperatures up to degrees. The unit is operable in conditions up to psig. Flanged or threaded connections are available. xterior surfaces receive a shop coat of rust inhibitive primer. L H See pages.. for ordering information ttenuation, d Typical ttenuation urve, inches of H O F F F ressure rop urves Octave and enter Frequency, Hz..... Velocity, ft/min ompact Model - -¹ ₂ art umber (nom.) L H Weight ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ³ ₄ ³ ₄ ¹ ₂ ¹ ₂ ¹ ₂ FM,,,,

20 . These wide base plate products accommodate a variety of blower package designs. The UI-S package and the USI-S base plate use the same basic base plate and discharge silencer. The UI- S package includes the Universal T model UR high-side inlet silencer and F inlet air filter, while the UI-S base plate is only the basic plate and the UR discharge silencer. lease see page. for performance and sizing information for the UR series silencers, page. for information on the UR series silencers, and page. for performance data, weights and dimensions of F filters. UI-S Ultra-Wide ase lates/omponents Rotary ositive lowers F (see page.) UR (see page.) UR (see page.) UR (see page.) UI-S ackage UI-S ase late Only See pages.. for ordering information UI-S ase lates/omponents art umbers Size ¹ ₂ UI-S ackage ase late Only UR Only UR Only F Only L-TT* -L-TT* -L-TT* -L-TT* -L-TT* -L-TT* *Specify at end of part number for unit with pleated paper elements, F for pleated felt or W for wire mesh. Refer to page. for filter element details.

21 . UI-S Ultra-Wide ase lates/omponents Rotary ositive lowers See pages.. for ordering information UI-S ase late (w/ur) (nom.) FS ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ¹ ₂ ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ³ ₄ ¹ ₂ ³ ₄ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ³ ₄ ¹ ₄ UR Silencers / (nom.) H pprox. Weight ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ F Silencers (please see page.) imensions and Weights G H J L Q (ia.) S ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₄ ¹ ₂ ³ ₄ ¹ ₄ ³ ₄ ¹ ₂ ¹ ₂ pprox. Weight otes:. Sizes " " UR discharge silencers are shipped standard with male pipe threaded connections. " and " UR discharge silencers are shipped standard with male pipe threaded discharge connections and plain pipe blower connections. " UR discharge silencers are shipped standard with flanged discharge connection drilled to / lb. SI specifications and plain pipe blower connections.. Sizes " " UR discharge silencers have a " T relief valve coupling and plug. Sizes " " UR discharge silencers have a " T relief valve coupling and plug.. UI-S base plate kit sizes " " require gussets. otes:. Sizes " " UR inlet silencers are shipped with male pipe threaded inlets and plain pipe outlets. Sizes " and " UR inlet silencers are shipped standard with flanged inlet connections drilled to / lb SI specifications and plain pipe outlets.

22 The absorptive type silencer is the classic dissipative design, deriving its noise control properties from the basic fact that noise energy is effectively absorbed by various types of fibrous packing materials. More technically, as sound waves pass through the spaces between the tightly-packed smalldiameter fibers of the absorptive material, the resulting viscous friction dissipates the sound energy as small amounts of heat. bsorptive silencers are very effective on high frequency noise (, Hz). t frequencies above and below this range, attenuation performance progressively diminishes. Since noise is absorbed by the packing media, absorptive silencers do not rely on internal baffles, tubes or other restrictive devices to achieve noise reduction. onsequently, absorptive silencers generally employ straight-through or similar internal designs which impose very little air flow restriction. General Information bsorptive Silencers. bsorptive Rotary Silencers ositive U Series (page.) Highly efficient straight-through silencer available in pipe sizes ¹ ₂" ". ttenuation characteristics equivalent to SU Series. U Series (page.) Moderately efficient straight-through silencer available in pipe sizes " ". For better performance, use SU, SU, SU, or U Series. SU Series (page..) Highest efficiency full flow annular type silencer. vailable in pipe sizes " ". Larger sizes available based on application. SU Series (page..) nnular type silencer with performance one grade below the SU Series. vailable in pipe sizes " ". Larger sizes available based on application. SU Series (page..) nnular type silencer with performance one grade below the SU Series. vailable in pipe sizes " " and larger. Sizing Information, ressure rop ata The flow area through the silencer must be sufficient to accommodate the maximum flow without imposing excessive pressure drop. The following instructions enable the selection of the proper silencer size and determination of actual pressure drop. These instructions assume air as the flowing gas. For other gases, density and other corrections may be necessarycontact Universal T for assistance. ata required: air flow rate (actual FM) temperature ( F) pressure (psig) maximum pressure drop (inches of water) etermine maximum velocity.. T V c. V = air or gas velocity, ft/min (see note ) = maximum pressure drop, inches of water c =silencer pressure drop coefficient (see Table ) T =air temperature, F (see note ) =operating pressure, psig (If at atmospheric pressure, pressure ratio is unity and may be omitted from equation. If exceeds psig, contact Universal T for recommendations.) etermine flow area required. Q V = flow area required, ft Q = air flow rate (actual FM) ctual FM (Standard FM) From Table, select size with flow area equal to or greater than that calculated. etermine actual gas velocity in ft/min. = flow area from Table etermine actual pressure drop. c Q V actual. T. V actual. T. c =silencer pressure drop coefficient (see Table ) ressure rop oefficients Silencer Series U, U SU SU, SU Flow rea Size Flow rea (ft ) iameter Size (in) ¹ ₂ ³ ₄ ¹ ₂ ¹ ₂ ressure rop oefficient ()... Flow rea (ft ) iameter Size (in) otes Since self noise and aerodynamic noise generation increase with velocity, absorptive silencers are usually sized for,, ft/min. In no case should the velocity exceed, ft/min, regardless of pressure drop allowed. Typical attenuation curves indicate the characteristics of the silencer series and are neither a minimum nor a guarantee for an individual silencer. Individual silencer performance can be affected by sound source characteristics including pure tones, flow velocity, adjacent piping, and temperature. See pages.. for ordering information

23 . bsorptive Rotary ositive Silencers U Series Straight-Through bsorptive Silencer ttenuation, d Typical ttenuation urve Octave and enter Frequency, Hz The U Series is a premium, straightthrough, absorptive silencer. It provides excellent noise attenuation due to its very high length to diameter ratio. It is especially well suited for inlet service on small rotary positive or centrifugal blowers or the discharge of vacuum pumps. Mild steel construction with enamel paint. See pages.. for ordering information ote U series standard paint and acoustical packing are suitable for F.. Sizes ¹ ₂" through ¹ ₄" are constructed with one-piece tapped heads. The tapped opening is approximately flush with the end on the shell.. Sizes ¹ ₂" through ": female T pipe connections.. Sizes " and ": #/# SI drilled flanges. L H ommon pplications rotary positive/centrifugal blowers vacuum pump discharge air valves and cylinders small low-pressure vents high frequency noise sources bsorptive Material Straight-Through bsorptive Silencer Model U-¹ ₂ U-³ ₄ U- U-¹ ₄ U-¹ ₂ U- U-¹ ₂ U- U- U- U- art L H Weight ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₈ ¹ ₈ ⁵ ₈ ³ ₄ ¹ ₂ ⁷ ₈ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₈ ⁷ ₈ ¹ ₂ ¹ ₂ ³ ₄

24 Typical ttenuation urve. The U Series is an economical straightthough silencer for applications requiring lower-degree noise attenuation. It is fundamentally similar to the U Series, but has lesser attenuation due to its relatively low length to diameter ratio. Mild steel construction, primer-coated exterior. ttenuation, d Octave and enter Frequency, Hz U Series Straight-Through bsorptive Silencer bsorptive Rotary Silencers ositive ommon pplications intermediate size rotary positive blower inlet centrifugal blower inlet or discharge intermediate size dry vacuum pump discharge gas turbine inlet high-speed centrifugal compressor inlet high frequency noise sources L H ll sizes are furnished with flanged connections to match #/# SI drilling. ote: U series standard paint and acoustical packing are suitable for F. bsorptive Material See pages.. for ordering information Straight-Through bsorptive Silencer Model U- U- U- U- U- U- U- U- U- U- U- U- art L H Weight,,

25 . bsorptive Rotary ositive Silencers SU Series nnular Flow bsorptive Silencer See pages.. for ordering information ote: SU Series standard paint and acoustical packing are suitable for F. SU Series The SU Series is our highest grade standard absorptive silencer. Its design consists of two concentric perforated cylinders lined with acoustical pack, forming an annular flow path. This design features full blocked-line-of-sight, while providing full flow area for low resistance. Mild steel construction, primer-coated exterior. L H ll sizes furnished with flanged connections to match #/# SI drilling. SU Series The SU Series provides lower attenuation, ranking just below the SU Series. The design of this unit features a bullet centered in the flow tube to provide annular flow path and partial blocked-lineof-sight. ressure drop is only slightly greater than the SU. Mild steel construction, primer-coated exterior. ommon pplications inlet and discharge of high-speed, low-pressure centrifugal compressors and blowers (discharge < psig) industrial fan inlet and discharge high-pressure centrifugal compressors inlet gas turbine inlet dry vacuum pump discharge some low-pressure vents (< psig) high-frequency noise sources inlet of turbocharged reciprocating engines bsorptive Material SU Series The SU Series is the most economical of Universal T s three grades of annular design silencers. Its design is nearly identical to the SU, including annular flow path and partial blocked-line-of-sight. ressure drop coefficient is the same as for the SU Series. Mild steel construction, primer-coated exterior. " size and smaller " size and larger ttenuation, d Typical ttenuation urve Octave and enter Frequency, Hz ttenuation, d Typical ttenuation urve Octave and enter Frequency, Hz

26 Rotary ositive. bsorptive Silencers. See pages.. for ordering information SU Series nnular Flow bsorptive Silencer Model art L H Weight SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU- SU ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂,,,,,,,,,,,,,,,,,,,,,,,,, SU SU SU

27 .. Rotary ositive Vent Silencers HV Series ombination Vent Silencers asy To Specify and Order Vent and blowdown silencers are seldom a simple catalog selection. Usually, the purchaser provides detailed specifications and a system description that enables Universal T to design a custom solution. n even easier way is to simply send the valve manufacturer s data sheet for a vent to Universal T and the experienced sales staff will recommend a silencer best suited for the application. Ordering Information See pages.. for ordering information Versatile Silencers HV Series vent silencers effectively silence high-velocity air, steam, and gas vents and blowdowns to atmosphere where sonic or critical conditions exist in the valve. Typical applications include: steam boiler relief valves superheater header relief valves boiler startup and purge high-pressure air vents natural gas blowdowns switch valves compressor blowoffs autoclaves steam ejectors Standard Features inlet plenum covered with outer acoustic wrap and lag shell highly absorptive fiberglass acoustic fill and heavy-gauge perforated face sheets inlet nozzle and diffuser with flange drilled to # SI standards lifting lugs and bottom drain heavy-duty welded steel construction high-heat aluminum paint system vertical or horizontal installation Optional Features high-temperature acoustic fill material construction options such as stainless steel, Monel, and Hastelloy inspection openings mounting brackets and other special supports outlet head and nozzle restrictive diffuser built to SM Section VIII, ivision I, to maintain back pressure or control blowdown time elbows, tailpipes, and weatherhoods special paints side inlet nnular Ring High-fficiency coustic ack esigned for Optimum Space onsiderations ll-welded Steel Outer Shell ack Retention with re-ompression Lower hamber Insulation (xcept HV and HV) Inlet iffuser, epending on pplication cousti-tube The concentric annular ring design (left) and the wrapped cousti-tube vent silencer design (right) offer a choice of silencer profile and configuration to meet site-specific requirements. omplete Solution Universal T s extensive in-house engineering, manufacturing, and testing facilities ensure an optimized process, mechanical and acoustic solution for any application.

28 . Ordering Information pplication Methodology Vent Silencers Rotary Vent Silencers ositive The HV Series comes with an inlet diffuser or orifice plate that is a critical element to the acoustic and mechanical performance of the silencer. oth the inlet nozzle and the diffuser/orifice plate are designed and constructed to withstand the thermal and impact stresses produced in high-pressure, high-temperature, continuous or intermittent vent and blowdown service. In vent applications, critical flow will occur for most gases at valve upstream pressures greater than twice the outlet pressure. Vent and blowdown noise levels increase with increased pressure drop and are also affected by valve aerodynamic recovery characteristics. Large valve, low-pressure vents will produce relatively broadband lowfrequency noise, while high-pressure vents with small valves will produce highfrequency noise. Subsonic (or noncritical flow) low-pressure vent and blowdown applications do not require, nor in most cases does the valve have pressure drop available to permit, the use of an inlet diffuser. ontact Universal T for silencer recommendations when a combination of both low pressure drop and acoustic requirements must be met. The HV Series is offered in six standard acoustic ratings, ranging in attenuation from to db. The HV is offered for applications where only minimum noise reduction is necessary, while the HV is offered for applications where maximum silencing is necessary. coustic ratings are offered in sizes that cover a wide range of gas flow. HV and HV acoustic ratings are offered for standard pipe diameters from " to ". ll other acoustic ratings are offered for standard pipe diameters of " to ". pplication nalysis Use the following design information from the valve data sheet for system analysis and silencer selection: Type of gas Molecular weight or specific gravity Ratio of specific heats Flow rate (lb/hr, FM or SFM) ressure and temperature upstream of valve and silencer Maximum allowable pressure drop (SI) for valve and silencer Manufacturer s name, and valve type and size Unsilenced noise levels from valve (if available) Silenced noise level (required at desired distance from source) Silencer inlet size and pressure rating Inlet orientation, axial or side Silencer orientation, vertical or horizontal iping arrangement, including schematic if available Other required options Form - is available to record this and other information in a standard format (see page.). Using this information, Universal T will prepare computer analyses and a comprehensive technical proposal and price quotation. Silencer selection is based upon optimization of flow velocity, required acoustical performance, and pressure drop. We are skilled in the application of process engineering principles that are needed to meet your performance requirements successfully. key element of a successful vent application is proper assignment of pressure drop in the piping, valve, and vent silencer. Valve performance and life can be considerably extended by appropriate distribution of pressure drop in the piping system, valve, and vent silencer. In many instances it is possible to reduce the pressure drop across the valve body to less than critical. This results in reduced valve actuator open/close force requirements. Reduced valve wear caused by cavitation damage and reduced through-valve-body noise are added benefits of this approach. Universal T can verify the valve flow and pressure drop characteristics from any valve manufacturer s data sheet. We offer a complete application engineering solution, including determination of blowdown time, bottled volume calculations, and complete valve, pipe treatment, and vent discharge acoustic performance predictions. Silencer Ratings by Grade lassification Series HV HV HV HV HV HV lassification Industrial ommercial Suburban Residential Hospital ritical verage ynamic Insertion Loss (d) See pages.. for ordering information

29 . Rotary ositive Vent Silencers roduct escription Vent Silencers Ordering Information See pages.. for ordering information pplication otes ipe size immediately downstream from a valve affects the noise spectrum octave band distribution. Universal T has developed proprietary methods to predict this distribution and accurately select the appropriate balance of reactive and absorptive elements in the vent silencer design. nnular vent silencers are assembled with structural members that accommodate thermal expansion in high-temperature applications. The acoustic fill is long fiber, noncombustible, inert, vermin and moisture-resistant fiberglass of at least four-pound-per-cubic-foot density, protected by both a fiberglass cloth and a perforated metal face sheet. The silencer is packed with a minimum of % compression fill; pack retaining rings minimize voids and settling of the fill. The silencer is designed so the inlet flange and diffuser are matched to the discharge rating of the valve. Often, Universal T can create a more cost-effective valve and piping system by using a restrictive diffuser or orifice plate to stage the system pressure drop. For conservatism, vent silencers with restrictive diffusers are designed with pressure ratings that match the SV inlet pressure rating. However, it is important to ensure that the control valve will not malfunction from the rated back pressure of the restrictive diffuser by reviewing the valve manufacturer s data sheet. ustomers are encouraged to contact the ompressed Gas ssociation (G) for more standards related to preparation and cleaning for applications in pure oxygen service. onstruction Features Universal T vent silencers are welded heavy-duty units. The inlet nozzle and diffuser are constructed of steel and are welded. The diffuser provides controlled pressure expansion to atmosphere and uniform flow distribution through the acoustic section of the silencer. The lined inlet plenum (expansion chamber) of the silencer is designed with a double shell separated by a layer of acoustic insulation and sound-deadening material. The inner shell is solid to prevent shellradiated noise and migration of the acoustic fill. The transmission loss across the plenum and bottom head is comparable to the silencer attenuation.

30 Vent Silencer Specification Sheet Form - Rev., // Tel.:.. Fax:.. -mail: us@universalt.com Web: lease furnish all information available. ame ompany ddress -mail roject Reference ate hone Fax Type of Gas Molecular Weight Ratio of Specific Heats (eak flow determined by valve mfr.) Flow Rate pounds per hour onditions ressure Upstream of Valve SI Temperature Upstream of Valve F Maximum llowable ressure rop SI Intermittent or ontinuous Service Valve lowdown pplication oise Specifications Type rand/model Size Rating ressurized Volume ft Maximum lowdown Time minutes Final ownstream ressure SI (lease provide unsilenced noise levels if available. Include distance and direction from source and attach any schematics or sketches if available.) Octave and enter Frequency (Hz). For additional spec sheets, visit Unsilenced oise Level Required Silenced oise Level SL d() overall at feet SL d() overall at feet Mounting Requirements Special Material Requirements Silencer Inlet Size and Rating Maximum Silencer imensions Inlet Orientation xial Side Silencer Orientation Vertical Horizontal Supports Skirt and ase Ring Shell Lugs Legs Saddles ozzles Other Shell Internals Finish Standard Hand tool cleaning, per SS-S and solvent cleaning per SS-S with high-heat aluminum paint finish. Optional dditional omments

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32 .. General Information Industrial Fan Silencers Industrial Fan Rotary Silencers ositive rimary air fans, forced draft fans and induced draft fans generally require some form of acoustical treatment. Most applications require inlet and/or outlet silencers to meet OSH and other noise requirements. For continuous exposure, a maximum of d is generally specified to avoid hearing damage. When conversation near the fan is desired, levels of d and less are often needed. Universal T designs and manufactures a complete line of silencers for application on all fan types. omputer enhanced technology developed for fan, turbine, and other air moving equipment enables Universal T to offer a cost-effective solution for every fan silencing application. ach of the four designss in this section has unique advantages over the others, depending upon the application, pressure drop and space utilization. This catalog covers standard models and sizes and provides basic information to evaluate the merits of the individual designs for your application. Special configurations, materials, higher temperatures, and sizes are available upon request. FS Series bsorptive/reactive Silencer The FS series fan silencer combines a reactive and absorptive chamber design that both reflects acoustic energy and dissipates it with absorptive pack material. onstructed from plate and sheet steel in an all-welded, straight-through flow path design, the FS series is suitable for most applications on the inlet and discharge of centrifugal or axial blowers, especially when low pressure drop is required. The standard FS silencer is suitable for temperatures up to F. cousti-vane bsorptive/arallel affle Silencer The cousti-vane silencer comes in standard cross-sections and lengths that cover a wide range of applications and provide economical solutions to a broad range of noise conditions. Standard units can be adapted for use in non-standard or application-specific configurations. The cousti-vane is available in three standard models: L The low-pressure drop cousti-vane has lower pressure drop than the other two models and is the most economical of the three. The L is the silencer of choice when pressure drop is critical and a relatively small amount of noise attentuation is needed. M The moderate pressure-drop cousti-vane offers greater acoustic performance than the L at a slightly higher pressure drop. The M models meets most noise attenuation specifications. H The high-performance cousti-vane provides maximum acoustic performance at a higher pressure drop than the L or M. The H models is ideal for the most demanding acoustical environment. The steel frame of the cousti-vane silencers has high sound transmission loss. The standard shell finish includes solventcleaning by SS-S-, shop coat primer inside and outside, and a blue enamel coating outside. The paint system withstands internal gas and skin temperatures up to ºF. Optional paint systems are available. cousti-tube bsorptive/tubular Flow Silencer The modular, compact, lightweight cousti- Tube silencer knocks out high-frequency noise while minimizing pressure drop. The cousti-tube silencer is available in standard cross-sections and lengths, which cover a wide range of product applications and are economical solutions to noise problems. The silencer s modular design allows customization for non-standard configurations without any loss of acoustic performance or increased pressure loss. omposite materials are used in the flowpath to reduce corrosion and maintenance. The lightweight, easy-tohandle design reduces shipping cost and installation time. The cousti-tube modules are factory-assembled in a hightransmission-loss steel frame. The frame has a standard high-performance, two coat paint system on interior and exterior surfaces suitable for outdoor installations. See pages.. for ordering information

33 . Rotary Industrial ositive Fan Silencers Sizing Information Industrial Fan Silencers See pages.. for ordering information In order to properly size a fan silencer, the flow area through it must be sufficient to accommodate the maximum flow without imposing excessive pressure drop. The following instructions enable you to select the proper silencer size and determine actual pressure drop. These instructions assume flowing gas is air. For other gases, density, and other corrections, contact Universal T for assistance. ata required: air flow rate (actual FM) temperature ( F) pressure (psig) maximum pressure drop (inches of water) etermine the maximum velocity to achieve the required pressure drop.. T V c. V = air or gas velocity, ft/min (see ote ) = maximum pressure drop, inches of water c =silencer pressure drop coefficient (see page.) T =air temperature, F (see ote ) =operating pressure, psig (if at atmospheric pressure, pressure ratio is unity and may be omitted from equation; if exceeds psig, contact Universal T for recommendations) etermine flow area required. Q required V required = flow area required, ft Q = air flow rate (actual FM) For reference, if SFM is given rather than FM, then convert using the following equation. ctual FM (Standard FM). T. From Table or the tables on page. select a size with a flow area equal to or greater than that calculated in step. etermine the actual gas velocity in feet per minute. Q V actual = flow area of size of silencer chosen, ft etermine actual pressure drop in inches of water. onversionipe iameter from Flow rea otes Flow rea (ft ) iameter (in) Since self noise and aerodynamic noise generation increase with velocity, absorptive silencers are usually sized for,, ft/min. In no case should the velocity exceed, ft/min, regardless of pressure drop allowed. Typical attenuation curves indicate the characteristics of the silencer series and are neither a minimum nor a guarantee for an individual silencer. Individual silencer performance can be affected by sound source characteristics including pure tones, flow velocity, adjacent piping, and temperature. actual V actual c T..

34 . Typical ttenuation urve.. FS Series " pipe size " pipe size " pipe size ttenuation, d Octave and enter Frequency, Hz FS Series ombination Type Silencer Industrial Fan Rotary Silencers ositive ote FS series standard paint and acoustical packing are suitable for F. ombination Type Silencer Model FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- FS- art L ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Features straight-through flow path combination reactive and absorptive design for best mid-frequency attenuation low-pressure drop pressure drop coefficient, c =. for pipe sizes < " and c =. for " and larger /# SI drilled plate flanges all-welded mild steel construction primer-coated exterior ommon pplications centrifugal blowers inlet and discharge axial blowers inlet and discharge industrial fans inlet and discharge centrifugal compressors inlet small reciprocating compressors H ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Weight,,,,,,,,,,,,, See pages.. for ordering information

35 . Rotary Industrial ositive Fan Silencers cousti-vane bsorptive arallel affle Type Rectangular Silencers The cousti-vane silencer is designed as a stand-alone silencer or in series with USI s cousti-tube silencer. The superior noise attenuation of the cousti-vane, combined with the superior high-frequency performance of the cousti-tube, provides excellent noise control over a broad spectrum. See pages.. for ordering information The cousti-vane silencer comes in standard cross-sections and lengths that cover a wide range of applications and provide economical solutions to a broad range of noise conditions. Standard units can be adapted for use in non-standard or application-specific configurations. The cousti-vane is available in three standard models: L The low-pressure drop cousti-vane has the lowest pressure drop and is the most economical of the three. M The moderate-pressure drop unit offers greater acoustic performance than the L at a slightly higher pressure drop and meets most noise attenuation specifications. H The high-performance cousti-vane provides the maximum acoustic performance. The H model is ideal for the most demanding acoustical environment. The steel frame for cousti-vane silencers has high sound transmission loss. The paint system withstands internal gas temperatures and skin temperatures up to F. Optional paint systems are available. How o I hoose? Three parameters are needed to select the correct silencer: () required acoustic insertion loss, () allowable pressure loss, and () the flow in actual cubic feet per minute (FM) of your equipment. Follow these steps to find the silencer that is most appropriate for your application. etermine the required dynamic insertion loss by octave band for your equipment and select the minimum silencer length that gives the required loss for each model. etermine the allowable pressure drop and flow in FM for your application. To find the pressure drop for gas temperatures other than F, multiply the selected value by [/(actual gas temperature F )]. hoose the cousti-vane model for your application. From the three graphs on page., choose the one that has the allowable pressure drop on the -axis. Read straight across until the line meets the pressure drop curve. The corresponding X-axis value is the maximum face velocity that will maintain the pressure drop requirement. ivide the FM by the required face velocity to find the minimum silencer cross-section that would give the required pressure drop. Face velocity is defined as the flow rate in FM divided by the silencer face area in square feet (W H). Select the silencer from the tables on page.. Replace L in the part number with the length of silencer you found in step. Specify whether the silencer is an L, M, or H model. The pressure drop will be equal to or slightly below the allowable pressure drop you selected. For special applications that require minimum pressure drop and demanding acoustic specifications, contact Universal T. xample ase: cousti-vane Selection for a Gas Turbine Inlet The insertion loss needed to attenuate noise is determined to be,,,,,,,, in the octave band center frequencies. Hz khz. Tables on page. show that a -ft L, -ft M or a -ft H would satisfy the requirements. For this application, the allowable pressure drop is. inches of water. Which eliminates the H model (see graph to the right of the table). For purposes of example, the flow in FM is assumed to be,. The graphs on page. show that the maximum face velocity to achieve. inches of water is, ft/min for the -ft L and, ft/min for the -ft M. ivide the flow in FM by the required face velocity for each silencer: L,/, ft M,/, ft In Table on page., find the silencer size that is equal to or greater than ft for the L model and ft for the M. In this example, the L (at ft face velocity) and M (at ft )meet your specifications, so you choose between: V L or cousti-vane dimensions. The silencer comes in standard cross-sectional dimensions and standard flange patterns. Flange patterns also can be designed to match your specifications. Silencers may be applied at temperatures that range between F and F. For standard flange patterns, silencer weights, and other details, request Technical ulletin -. V M

36 Silencer Octave ands (Hz) Length (ft). L (low pressure drop) Models Silencer Octave ands (Hz) Length (ft). M (moderate pressure drop) Models H (high performance) Models Silencer Octave ands (Hz) Length (ft). ressure rop, inches of H O ressure rop, inches of H O ft. cousti-vane ft. cousti-vane ft. cousti-vane ft. cousti-vane Face Velocity, ft/min Face Velocity, ft/min Face Velocity, ft/min otes: ynamic insertion loss in d for face velocities < ft/min, and pressure drop for gas temperatures of F. To find the pressure drop for gas temperatures other than F, multiply the selected value by [/(actual gas temperature F + )]. ontact Universal T for more information about face velocities > ft/min. ressure rop, inches of H O Industrial Fan Rotary Silencers ositive See pages.. for ordering information cousti-vane art umbers and Face reas art umber (V-H W-model) V- -L-m V- -L-m V- -L-m V- -L-m V- -L-m V- -L-m V- -L-m V- -L-m V- -L-m V-..-L-m V- -L-m Face rea (ft )

37 . Rotary Industrial ositive Fan Silencers cousti-tube bsorptive Tubular Flow Type Rectangular Silencers The modular, compact, lightweight cousti- Tube silencer knocks out high-frequency noise while minimizing pressure drop. See pages.. for ordering information The cousti-tube silencer comes in standard cross-sections and lengths, which cover a wide range of applications and are economical solutions to industrial fan noise problems. The silencer s modular design enables customization for non-standard configurations without any loss of acoustic performance or increased pressure loss. omposite materials are used in the flowpath to reduce corrosion and maintenance. cousti-tube dimensions. The cousti-tube silencer comes in standard cross-sectional dimensions and standard flange patterns. Flange patterns also can be designed to match your specifications. ressure rop, inches of H O ynamic Insertion Loss in d for Face Velocities < ft/min Silencer Octave ands (Hz) Length (ft). The lightweight, easy-to-handle design reduces shipping cost and installation time. The cousti-tube modules are factoryassembled in a high-transmission-loss steel frame. The frame has a standard highperformance, two-coat paint system on interior and exterior surfaces suitable for outdoor installations. cousti-tube silencers operate optimally at temperatures between F and F.. ft. cousti-tube. ft. cousti-tube. ft. cousti-tube. ft. cousti-tube Face Velocity, ft/min cousti-tube art umbers and Face reas art umber (V-H W-L) T- -L T- -L T- -L T- -L T- -L T- -L T- -L T- -L T- -L T-..-L T- -L Face rea (ft ) How o I hoose? s with the cousti-vane, three parameters are needed to select the correct cousti- Tube silencer: () required acoustic insertion loss, () allowable pressure loss, and () the flow in actual cubic feet per minute (FM) for your equipment. Follow these steps to choose the appropriate silencer: etermine the required dynamic insertion loss by octave band for your equipment. Use Table to select the minimum silencer length that gives the required octave band insertion loss. etermine the allowable pressure drop and FM for your application. In Figure, find the -axis value for the allowable pressure drop. Read straight across the graph to the pressure drop curve. The corresponding X-axis value is the maximum face velocity that will maintain the pressure drop requirement. ivide the FM by the required face velocity to find the minimum crosssection that gives the required pressure drop. Face velocity is defined as the flow rate in FM divided by the silencer face area in square feet (W H). Select the silencer model from Table. Replace L in the model number with the length of silencer you found in step. The part number for ordering will be the prefix -, the dimensions of the silencer, and the suffix -. So a silencer would have a part number of --. For special applications that require minimum pressure drop and demanding acoustic specifications, contact Universal T. Figure ressure rop versus Silencer Face Velocity. To find the pressure drop for gas temperatures other than F, multiply the selected value by /(actual gas temperature F ).

38 Vacuum ump Systems Separator-silencers are used to remove liquid from gas flow vacuum systems using either liquid-sealed rotary positive blowers or liquid ring vacuum pumps (Fig. ). Separator-silencers may be required for both the inlet (vacuum) and the discharge (atmospheric) of a vacuum system. Only the most stringent acoustical environments require significant inlet silencing. n inlet separator provides corrosion protection for the vacuum pump by removing most, if not all, of the process liquid before it enters the vacuum pump. The vacuum pump or blower discharge is normally extremely noisy and requires a high-performance separator-silencer. General Information Vacuum ump Liquid Separator-Silencers.. Vacuum ump Liquid Rotary Separator-Silencers ositive Operation and apacity When a vacuum pump starts operating at normal atmospheric pressure, system pressure drop and power requirements are at their maximum. s the vacuum pump continues to evacuate the system, the inlet pressure decreases so the system pressure losses and power requirements decrease. The inlet volume flow in actual cubic feet per minute (FM) stays essentially constant throughout system operation, but because of decreasing inlet pressure, the discharge volume decreases until normal operating conditions are reached. Vacuum pump capacities at operating conditions are expressed by the inlet volume flow of air and the amount that the inlet pressure has been reduced below atmospheric pressure. Thus, vacuum pump capacities are stated in inlet FM at a relative vacuum, usually measured in inches of mercury (Hg). inlet separator-silencer Liquid Separation erformance Separator-silencers meet their rated liquid separation efficiency at a nozzle velocity of, ft/min. t lower velocities their performance improves. t higher velocities their efficiency decreases. The nozzle velocity is the air velocity in the inlet or discharge nozzle and is equal to the actual volume flow rate (FM) divided by the nozzle area. Since the inlet volume flow rate is nearly constant during normal vacuum pump operation, the inlet separator-silencer should be sized so the velocity does not exceed, ft/min during all phases of operation (Table, page.). The discharge flow rate decreases from startup to normal operation, and in some applications it may be acceptable to exceed a velocity of, ft/min during startup. If it is not acceptable to discharge liquid during startup, the velocity must be reduced. vacuum pump liquid air discharge separatorsilencer If some liquid bypass is allowed during startup, the selection of the discharge separator-silencer should be based on pressure drop. Inlet and discharge separator-silencers require drain systems to remove the liquid. These systems (both inlet and discharge) must provide an adequate drain sealing system or liquid level to offset the vacuum on the inlet side and prevent blowout on the discharge side. See Tables and on the following page for liquid removal data. Figure This is an example of a vacuum pump and liquid removal system. ir and liquid enter the inlet separator-silencer during processing (). rocess liquid is removed (), and air enters the vacuum pump (). The pump takes in seal liquid (). ir and seal liquid are pumped into the discharge separator-silencer (), which removes the liquid () and sends the air into the atmosphere (). See pages.. for ordering information

39 . Rotary Vacuum ositive ump Liquid lower Separator-Silencers Silencers pplication Guide Vacuum ump Liquid Separator-Silencers See pages.. for ordering information Technical etails Separator-silencer pressure drop depends on velocity and pressure. In a vacuum system, pressure drop is at a maximum during startup. Under normal atmospheric conditions, the pressure drop at startup, for either an inlet or discharge separator-silencer, is calculated from the following equation: c FM p c V FM = inlet volume flow rate c = separator-silencer coefficient (see Table ) = pressure drop in inches of water p =separator-silencer size (nozzle diameter) in inches V =velocity in ft/min If the startup pressure drop is too great, use the flow given for a lower relative vacuum, or calculate a separator-silencer size from this equation: c p. FM c =separator-silencer coefficient = desired pressure drop in inches of water p =separator-silencer size (nozzle diameter) in inches Maximum apacity (Inlet FM) for Full Liquid Separation fficiency at Operating Vacuum ominal Operating Vacuum, Inches of Hg Size * ** ¹ ₂ ¹ ₂,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, * This column is used for inlet separator-silencers and discharge separator-silencers with no liquid bypass during startup. ** apacity at operating vacuum greater than " Hg is limited by startup conditions. Maximum Liquid Flow in GM for Various rain Sizes* rain Size (O) ¹ ₂ ¹ ₂ Models UWVS, UWSI, RWVS, RWSI, Models UVS, UVRS RVS, RVRS, * Values are based on gravity drain and may be larger with a positive drainage system. ressure rop oefficients and Separation fficiency Model ressure rop oefficient () Separation fficiency RWVS/UWVS. % RWSI/UWSI. % RVS/UVS. % RVRS/UVRS. >%

40 . Rotary Vacuum ositive ump Liquid lower Separator-Silencers Silencers The RWVS and low profile UWVS inlet liquid separator-silencers provide corrosion protection for vacuum pumps by removing most of the process liquid before it enters the vacuum pump. These separators are best suited for full vacuum conditions under critical applications which require inlet silencing. xterior surfaces receive a shop coat of rust inhibitive primer. Insertion Loss, d Typical Insertion Loss. Octave and enter Frequency, Hz RWVS/UWVS Series Inlet Liquid Separator-Silencers.. Vacuum ump Liquid Rotary Separator-Silencers ositive Top View Side View L RWVS Series Z inlet flow L UWVS Series J Z inlet flow See pages.. for ordering information Model RWVS- RWVS art umber R-#- Model UWVS- O UWVS art umber U-#- (nom.) O (nom.) L ¹ ₂ UWVS * apacities for larger sizes available on request. ** If maximum gas flow is not exceeded for a given separator size, liquid GM may exceed nominal capacity shown, up to the capacity of the next larger separator. ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ O Z J Weight ¹ ₂ ⁵ ₈ ³ ₄ ¹ ₈ ³ ₄ ¹ ₂ ¹ ₄, ⁹ ₁₆, ⁷ ₁₆, ¹ ₈, ⁷ ₈, ⁵ ₈, Rated apacity* Max. FM at Vacuum (lower Inlet),,,,,,,,,, Liquid GM**,,

41 . Rotary Vacuum ositive ump Liquid lower Separator-Silencers Silencers RWSI/UWSI Series Inlet Liquid Separator-Silencers Insertion Loss, d Typical Insertion Loss. Octave and enter Frequency, Hz The RWSI and low profile UWSI inlet liquid separator-silencers provide corrosion protection for vacuum pumps by removing most of the process liquid before it enters the vacuum pump. These separators are best suited for full vacuum conditions under critical applications, which require inlet silencing. The RWSI models have a unique profile and larger pipe sizes than the RWVS series. xterior surfaces receive a shop coat of rust inhibitive primer.. See pages.. for ordering information Model RWSI- RWSI art umber R-#- Top View Side View Model UWSI- L UWSI art umber U-#- (nom.) L RWSI Series O ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ * apacities for larger sizes available on request. ** If maximum gas flow is not exceeded for a given separator size, liquid GM may exceed nominal capacity shown, up to the capacity of the next larger separator. J Z inlet flow L UWSI UWSI Series O Z J O (nom.) Weight ³ ₄ ³ ₁₆ ¹¹ ₁₆ ¹¹ ₁₆ ⁵ ₈ ⁵ ₈ ¹ ₂,,,,,,, J Z inlet flow Rated apacity* Max. FM at Vacuum (lower Inlet),,,,,,,,,,,,, Liquid GM**,,,,,

42 . Typical Insertion Loss.. Rotary ositive The RVS and low profile UVS models provide high performance liquid separation and noise attenuation. When an inlet separator is not installed, the discharge separator may need to be oversized. xterior surfaces receive a shop coat of rust inhibitive primer. Insertion Loss, d. Octave and enter Frequency, Hz RVS/UVS Series ischarge Liquid Separator-Silencers Vacuum ump Liquid Rotary Separator-Silencers ositive Side View Top View L O ipe sizes " " Z J RVS Series inlet flow L O F Z R J inlet flow L O Z UVS Series inlet flow ipe sizes " " ipe sizes " " ipe sizes " " L O F Z R J inlet flow See pages.. for ordering information Model RVS- ¹ ₄ ¹ ₂ ¹ ₂ art umber R-#- Model UVS- ¹ ₄ ¹ ₂ ¹ ₂ art umber U-#- ll models use a pipe thread connection (MT) for the liquid outlet (O). Sizes " " are standard with male pipe thread connection (MT). Sizes " " are standard with # SI drilled plate flanges. Low rofile (nom.) L ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ F Z R J O (nom.) Weight ¹ ₂ ³ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ³ ₄ ³ ₄ ³ ₄ ³ ₃₂ ¹ ₁₆ ³ ₄ ¹¹ ₁₆ ⁵ ₈ ⁹ ₁₆ ¹ ₂ ⁷ ₁₆ ⁵ ₁₆ ³ ₁₆ ¹⁵ ₁₆ ¹¹ ₁₆ ⁷ ₁₆ ¹ ₄ ⁷ ₈ ¹ ₂ ¹ ₂ ¹ ₂,

43 . Typical Insertion Loss Rotary Vacuum ositive ump Liquid lower Separator-Silencers Silencers RVRS/UVRS Series ischarge Liquid Separator-Silencers Insertion Loss, d. Octave and enter Frequency, Hz The RVRS and low profile UVRS models offer better attenuation than the RVS and UVS models. For pipe sizes " ", the RVRS has a side liquid outlet, while the RVS has a vertical liquid outlet. xterior surfaces receive a shop coat of rust inhibitive primer. See pages.. for ordering information Side View Top View L ipe sizes " " R F Z J inlet flow RVRS Series L O F Z R J inlet flow L R O F Z UVRS Series J inlet flow ipe sizes " " ipe sizes " " ipe sizes " " L O F Z R J inlet flow Model RVRS- ¹ ₄ ¹ ₂ ¹ ₂ art umber R-#- Model UVRS- ¹ ₄ ¹ ₂ ¹ ₂ art umber U-#- ll models use a pipe thread connection (MT) for the liquid outlet (O). Sizes " " are standard with male pipe thread connection (MT). Sizes " " are standard with # SI drilled plate flanges. Low rofile (nom.) L ¹ ₄ ¹ ₂ ¹ ₂ ³ ₄ ³ ₄ ⁷ ₈ ¹ ₂ ³ ₈ ¹ ₂ ³ ₄ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ F Z R J O (nom.) Weight ¹ ₄ ¹ ₄ ³ ₄ ¹ ₂ ¹ ₂ ³ ₄ ¹ ₂ ¹ ₄ ¹ ₄ ¹⁹ ₃₂ ¹⁹ ₃₂ ³ ₆₄ ¹³ ₁₆ ¹³ ₁₆ ⁹ ₁₆ ⁹ ₁₆ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ³ ₄ ³ ₄ ³ ₄ ¹ ₁₆ ¹ ₁₆ ³ ₄ ¹¹ ₁₆ ⁵ ₈ ⁹ ₁₆ ¹ ₂ ⁷ ₁₆ ⁵ ₁₆ ³ ₁₆ ¹⁵ ₁₆ ¹¹ ₁₆ ⁷ ₁₆ ¹ ₄ ⁷ ₈ ¹ ₂ ¹ ₂ ¹ ₂,,,

44 . General Information Specialized ngine xhaust Silencers ngine xhaust Rotary Silencers ositive Series Silencers Multi-hamber Silencers For the majority of engines and operating conditions, multi-chamber type silencers provide maximum noise attenuation within acceptable back pressure limits. Most naturally aspirated and supercharged engines need this type of silencer. Many turbocharged engines are best silenced with this design also. Factors which influence the choice of silencer design are explained on the following page. T Series Silencers Straight-Through Silencers Some engines require very low exhaust system back pressures for maximum performance. Many turbocharged engines and some naturally aspirated engines fall into this category. For these engines, straightthrough, reactive silencers are available to provide adequate silencing while imposing negligible restriction on exhaust gas flow. Multi-chamber exhaust silencers for most reciprocating engines. Straight-through exhaust silencers for engines which demand very low back pressures. See pages.. for ordering information S Series Silencers Spark rresting Silencers Operating locations exist where fire hazards and safety codes require removal of sparks from exhaust gases. Universal T s spark arrestor silencers are engineered to perform the dual function of spark arrestment and silencing for all internal combustion engines. Spark arresting exhaust silencers for engines operating in high potential fire areas.

45 . Rotary ngine ositive xhaust Silencers Sizing Information ngine xhaust Silencers Universal T s engine exhaust silencers are high quality, fully welded, reactive silencers designed to reduce exhaust noise on all types of internal combustion engines. ach engine and each operating location requires a unique combination of silencer properties. For this reason many different silencer models are cataloged to cover most silencing problems. In cases where standard silencers will not meet a particular spec, these custom silencers will satisfy the application need. See pages.. for ordering information hoosing the correct exhaust silencer for a given engine is an important although not difficult task. First of all, a degree of silencing is chosen that will satisfy the noise requirements unique to each engine and location. Secondly, the silencer size is selected to accommodate the specified volume of exhaust flow without imposing excessive back pressure. Selection of Silencer Type (Grade) ach silencer group described on pages.. has a number of a series with different noise attenuation characteristics. The series letter designation (e.g., ) indicates in relative terms the degree of noise attenuation; the higher the number, the greater the attenuation. Industrial or ommercial grade Residential grade ritical grade Hospital grade The attenuation curves next to the tables on each page indicate the attenuation in d by octave bands. These curves are based upon typical applications. They will not necessarily define the precise insertion loss for any specific application since the insertion loss achieved may be influenced substantially by many factors, including engine size, type, speed, and unsilenced noise levels and frequency distribution. Selection of Silencer Size The open flow area within the silencer should be large enough to accommodate the maximum possible exhaust flow without exceeding the engine manufacturer s maximum allowable back pressure. Improperly sized silencers may cause loss of power or damage to the engine. ata required: engine exhaust flow (FM) exhaust temperature ( F) maximum back pressure (inches of water) The following formulas enable the correct silencer size to be quickly determined. alculate gas velocity. V c T V = gas velocity = back pressure, inches of water c =silencer pressure drop coefficient (Table ) T =exhaust gas temperature, F ote: Velocity should not exceed, ft/min regardless of the allowable back pressure. alculate required flow area. FM Flow rea Required (ft ) V From Table, select the silencer size which has a flow area equal to or greater than that calculated, the actual back pressure can be calculated as follows: FM V actual silencer flow area = c V actual T ressure rop oefficients Silencer Model,, (" ") (" ) T T S, Flow rea/size Flow rea (ft ) ressure rop oeff. () iameter (in.) ¹ ₂ ¹ ₂

46 ,,, Series,,, Series. Series Multi-hamber Silencers ngine xhaust Rotary Silencers ositive Size art umber L H L rain nd-in, nd-out esign H Side-In, nd-out esign ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. rain Min. ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Max. Weight,,,,,,,,, and Series ngine xhaust Silencers are heavy-duty, fully welded units constructed of carbon steel sheet and plate. ach silencer is equipped with flanged connections drilled to match / lb SI specifications. xterior surfaces receive a coat of heat resistant paint. For Series, " " are sizes equipped with standard male pipe thread connections. Sizes " and larger have flanged connections drilled to match / lb SI specifications. The addition of in the model designation indicates a side inlet. oth configurations are fundamentally alike and performance is identical. ttenuation, d " pipe size " pipe size " pipe size Typical ttenuation urve Octave and enter Frequency, Hz See pages.. for ordering information Size art umber L H ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. Min. ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Max. Weight,,,,,,,, ttenuation, d " pipe size " pipe size " pipe size Typical ttenuation urve Octave and enter Frequency, Hz

47 . Rotary ngine ositive xhaust Silencers Series Multi-hamber Silencers See pages.. for ordering information ttenuation, d ttenuation, d " pipe size " pipe size " pipe size Octave and enter Frequency, Hz Typical ttenuation urve " pipe size " pipe size " pipe size Typical ttenuation urve Octave and enter Frequency, Hz Size art umber L H ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. Min. ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ art Size umber L H Min. ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions. Max. Max. Weight,,,,,,,,, Weight,,,,,,,,,,

48 . T, T Series T Series Straight-Through Silencers ngine xhaust Rotary Silencers ositive T Size art umber L H rain L H Weight T and T Series ngine xhaust Silencers are heavy-duty, fully welded units constructed of carbon steel sheet and plate. ach silencer is equipped with flanged connections drilled to match / lb SI specifications. xterior surfaces receive a coat of heat resistant paint. ue to low back pressure requirements, no side inlet configuration is cataloged. In some special cases side inlets may be designed on application ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions.,,,,,,, ttenuation, d " pipe size " pipe size " pipe size Typical ttenuation urve Octave and enter Frequency, Hz See pages.. for ordering information T Size art umber L H Weight ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions.,,,,,,,,, ttenuation, d " pipe size " pipe size " pipe size Typical ttenuation urve Octave and enter Frequency, Hz

49 . S, S Series Rotary ngine ositive xhaust Silencers S Series Spark rrestor Silencers S and S Series spark arresting silencers are heavy-duty, fully welded units constructed of carbon steel sheet and plate. ach silencer is equipped with flanged connections drilled to match / lb SI specifications. xterior surfaces receive a coat of heat resistant paint. Large capacity spark traps are provided on each unit which can be easily opened for periodic cleaning. Side inlet configurations will be designed on application. S and S Series may be mounted vertically or horizontally. S Size art umber L H rain nd-in, nd-out esign L H Weight See pages.. for ordering information ttenuation, d " pipe size " pipe size " pipe size Typical ttenuation urve Octave and enter Frequency, Hz ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions.,,,,,,, S Size art umber L H Weight ttenuation, d " pipe size " pipe size " pipe size Typical ttenuation urve Octave and enter Frequency, Hz ote: imensions and weights are nominal and may vary slightly with production models. Request certified drawings of specific models for exact dimensions.,,,,,,,,

50 . ccessories ngine xhaust Silencers ngine xhaust Rotary Silencers ositive Flex onnectors (Size) ¹ ₂ ¹ ₂ L (ominal) Weight Flex onnectors are recommended for engine exhaust applications to compensate for thermal expansion and vibration (but not misalignment). Flexible material is type stainless steel, suitable for temperatures to F. Flanges and pipe fittings are mild steel. Sizes " " are standard with male T, larger sizes are equipped with flanges drilled to / lb SI. ompanion Flange Set ipe Size Weight ach ompanion Flange Set includes one mild steel welding flange drilled to match / lb SI, one gasket and one set of bolts and nuts. ast iron threaded flanges and stainless steel flanges are available and will be quoted on request. Single and double reducing flanges are also available. Raincaps art umber (Fits ipe Size) ¹ ₂ ¹ ₂ Weight ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ Raincaps prevent rain, snow, and dust from entering the exhaust system. on-corrosive bushings insure positive opening. ll sizes are standard in mild steel with high temperature paint. Sizes " " are also available in stainless steelquoted by request and equipped with adjustable counterweights. See pages.. for ordering information

51 . Rotary ngine ositive xhaust Silencers ccessories ngine xhaust Silencers See pages.. for ordering information Mounting ttachments Mounting ttachments are welded in place on the silencer shell to facilitate installation. Standard and variable dimensions are available. Inspection Openings art Inspection Opening Size (Oval) Weight Inspection Openings have removable covers to provide access to silencer internals for inspection or cleaning. Usually one opening per silencer chamber is recommended. xplosion Relief over art Relief over Size Weight xplosion Relief overs are designed to open at SI to protect the silencer shell against rupture in case of backfire or explosion of residual gases within exhaust system. One unit in first chamber of silencer is adequate.

52 .. pplication Guide Filters and Filter-Silencers Filters and Rotary Filter-Silencers ositive These filters and filter-silencers are available with a variety of filter panels, each with its own restriction characteristics. To reflect that fact, the total pressure drop for a specific filter application is the sum of two pressure drop values: The first value is the restriction that can be attributed to the filter housing without filter panels. This value is found in the graphs at right. The second value is the restriction through the filter panel media. These values are taken from the table below. The pressure drop values for the filter panels are listed in the table as pressure drop in inches of water gauge at various flow rates in FM. The housing pressure drop is shown in graphical form as a function of air flow in FM versus pressure drop in inches of water gauge. To avoid confusion, pressure drop values in the graphs include pipe entrance pressure drops from the atmospheric end of the inlet pipe. These drops are significant, contributing as much as % of the total pressure drop, and should not be attributed to the filter. dding the filter transfers these pressure losses to the interior of the filter housing. pressure drop measurement at the pressure tap on the filter outlet reflects the total: ipe entrance loss Velocity pressure Housing restriction ressure rop, in Inches Water Gauge ressure rop, in Inches Water Gauge Flow Rate, FM " outlet nozzle size " outlet nozzle size ressure rop urves for Filter Housings FH, FSH, FH, and FSH Series " " " " " " " " " " " " ressure rop urves for Filter Housings FH, FSH, FH, and FSH Series " " " " " " " " " " " ". Flow Rate, FM See pages.. for ordering information ressure rop Values for " " anel Filters, in Water Gauge FM per filter W- - - W- and - W- and - - and -F - W- and - - and -,,,

53 . Rotary Filters and ositive lower Filter-Silencers FH Series Filter FSH Series Filter-Silencer For centrifugal compressors, blowers, engines, and gas turbines. For reciprocating compressors, ask Universal for recommendations. See pages.. for ordering information F The FH and FSH series use standard panel filters, which are available in a variety of types and efficiencies. The supports for the filter frames inside the housings accommodate conventional " deep singlepanel filters or, for critical service, two single-panel filters staged in series. In the case of dual-stage systems, use a highefficiency final filter and a less efficient primary filter. The FSH series has an integrated silencing section for applications that require moderate noise reduction. Model FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH Filter art umber Removable Weather Louver art umbers (Standard Units with Louvers) --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L F FSH Filter Silencer art umber Model FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L Removable Weather Louver ll units are fabricated of steel sheet and plate, welded throughout to provide a rugged, long-lasting, trouble-free air filtering component. ll models are equipped with a pressure tap and flanges drilled to match /-lb SI specifications. Inside and outside housing surfaces are primed and given a finish coat of enamel paint. Suitable mounting legs may be fitted in the field or will be quoted upon application. ll housings come with low-profile, UV-stabilized plastic weather louvers. onfig. ap. FM,,,,,,,,,,,,,,,,,, (nom.) oise ttenuation ttenuation, d F Weight FH FSH,,,, ominal capacity is based on an exit velocity of approximately, ft/min. Filter element capacity may be greater, but this is unrelated to unit capacity. "-deep filter frames will hold single or dual elements. Weights include the weights of weather louvers only. Refer to page. for filter element details. F Removable Weather Louver F Octave and enter Frequency, Hz,,,,,,,, Removable Weather Louver umber and Size of Filter Openings,,,,,,,,,,,,,,,,,,

54 For centrifugal compressors, blowers, engines, and gas turbines. For reciprocating compressors, ask Universal T for recommendations. FRH Series Filter FRH Series Filter-Silencer.. Filters and Rotary Filter-Silencers ositive F Removable Weather Louver These products are similar to the FH and FSH series, except that the FRH and FRH series are two-stage filters. The second stage consists of a battery of cartridge filters for each " " " prefilter. The high-efficiency - cartridge filters have threaded ends that screw into individual receptacles. s each - filter is removed and replaced, less than in is exposed to the flow of unfiltered air, so hot swap changeouts (while the system is in operation) are an option for these units. F Removable Weather Louver Usually, a moderately efficient filter panel is used as the first-stage element. The FRH series has an integrated silencing section that provides moderate noise reduction. ll units are fabricated of steel sheet and plate, welded throughout to provide a rugged, long-lasting, trouble-free air filtering component. ll models are equipped with a pressure tap and flange drilled to match /-lb SI specifications. Inside and outside surfaces are primed and given a finish coat of enamel paint. ll housings come with low-profile, UV-stabilized highdensity polyethylene weather louvers. F Removable Weather Louver F oise ttenuation ttenuation, d Removable Weather Louver Octave and enter Frequency, Hz,,,, See pages.. for ordering information art umbers (Standard Units with Louvers) Model FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH Filter art umber --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L FRH Filter Silencer onfig. Model art umber FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- FRH-- --L --L --L --L --L --L --L --L --L --L --L --L --L --L --L ap. FM,,,,,,,,,,,,,,, (nom.) F Weight FRH FRH ominal capacity is based on an exit velocity of approximately, ft/min. Filter element capacity may be greater, but this is unrelated to unit capacity. "-deep filter frames will hold single or dual elements. Refer to page. for filter element details. umber and Size of Filter Openings,,,,,,,,,,,,,,,,,,,,,,,,,,, Final Filters

55 . Rotary Filters and ositive lower Filter-Silencers FH Series Filter For centrifugal compressors, blowers, engines, and gas turbines. For reciprocating compressors, ask Universal T for recommendations. See pages.. for ordering information Removable Weatherhood om. ipe Size Removable Weatherhood om. ipe Size The Universal T FH Series air filter is a compact, inexpensive unit designed for standard panel filters, which are available in a variety of types and efficiencies. Where noise is a consideration, the FH is used in series with a separate inlet silencer. The filter frames accommodate conventional "-deep single-panel filter elements, single stage only. Removable Weatherhood om. ipe Size These units are fabricated of steel sheet and plate, welded throughout, to provide a rugged, long-lasting, trouble-free air filtering component. The filter is equipped with removable weather louvers. For convenience of mounting, the bottom plate contains an opening and bolting pattern that matches / lb SI flange specifications. Inside and outside housing surfaces are primed and given a finish coat of enamel paint. art umbers (Standard Units with Louvers) Filter FH-- FH-- FH-- FH-- FH-- FH-- FH-- FH-- art umber --L --L --L --L --L --L --L --L onfig. apacity FM,,,,,, ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ Weight umber and Size of Filter Openings,,,,,,,, ominal capacity is based on exit velocity of approximately, ft/min. Filter element capacity may be greater, but this is unrelated to unit capacity. Weights do not include the weight of the filter elements. "-deep filter frames will hold a single filter element. Refer to page. for filter element details.

56 The RF Series Filter-Silencer is a high-degree reactive (chamber) silencer of very rugged construction, which is typically required for large, slow-speed reciprocating or positive displacement machinery, where broadband noise attenuation and inherent vibrationresistant structural strength is required. Wire mesh panel filters are standard in one of the four configurations shown below. RF units are fabricated of steel sheet and plate, welded throughout. Filter panels are serviced and replaced through hinged access doors. Flanged connections are drilled to match /# SU specifications. Inside and outside surfaces are given a shop coat of rust inhibitive primer. The exterior may be finish-painted in the field if desirable. For intermediate and large positive displacement blowers, reciprocating engines, and compressors. RF Series Filter-Silencer.. Filters and Rotary Filter-Silencers ositive RF Series RF Series RFS Series RFS Series oise ttenuation ttenuation, d rain #/# SI Flange rilling Filter ccess oors Octave and enter Frequency, Hz,,,, F rain #/# SI Flange rilling Filter ccess oors art umbers (Standard with Wire Mesh lements) RF Series Model art umber RF- RF- RF- RF- RF- RF- RF- RF- RF- RF- RF- RF- RF Refer to page. for filter element details. Model RF- RF- RF- RF- RF- RF- RF- RF- RF- RF- RF- RF- RF- rain #/# SI Flange rilling Filter ccess oors RF Series art umber Model RFS- RFS- RFS- RFS- RFS- RFS- RFS- RFS- RFS- RFS- RFS- RFS- RFS- F rain #/# SI Flange rilling Filter ccess oors RFS Series art umber See pages.. for ordering information om. Model ap. FM F RF RF RFS RFS RF RF RFS Min. Min. RF/RF/RFS- RF/RF/RFS- RF/RF/RFS- RF/RF/RFS- RF/RF/RFS-,,,,, ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ³ ₄ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ RF/RF/RFS-, ¹ ₂ RF/RF/RFS-, ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ RF/RF/RFS-, ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₂ RF/RF/RFS-, RF/RF/RFS-, ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ RF/RF/RFS-, ¹ ₂ ¹ ₂ RF/RF/RFS-, ¹ ₂ ¹ ₂ ¹ ₂ RF/RF/RFS-, ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₂ ominal capacity is based on exit velocity of approximately, ft/min. Filter element capacity may be greater, but this is unrelated to unit capacity. umber and Size of Filter Openings,,,,,,,,,,,,, Weight RF, RF RFS,,,,,,,,,,,,,,,,,,,,

57 . Rotary Filters and ositive lower Filter-Silencers FSH Series bsolute Filter For centrifugal compressors, blowers, and gas turbines. See pages.. for ordering information The FSH Series bsolute Filter-Silencer represents the ultimate high-efficiency air filtration for industrial applications. The unit uses first- and second-stage elements, having a combined depth of ", to provide exceptional efficiency on ultra-fine particulates and a large surface area for low flow resistance and high dirt-retention capacity. Filtration efficiency is.% on particles. microns. Instead of a conventional gasket seal, the FSH utilizes a unique fluid seal for the final filter. channel on the downstream side of the -F final filter holds a stable silicon gel fluid. The frame has a projecting tongue which is immersed in the fluid. The result is a % bypass-free system. For economy, the filters are staged, so that the less expensive pre-filter roughing pad and primary filter can be changed more frequently than the final filter. Under typical conditions, the pre-filter will require replacement about once a year, while the final filter may provide two to three years of service. Specification details for the - pre-filter and -F final filter can be found on page.. The FSH features an integral silencing section for a moderate degree of noise attenuation. The unit is constructed of heavy-duty steel sheet and plate, welded throughout, making it a rugged, long-lasting, trouble-free air filtering component. ll models are equipped with removable weatherhoods, pressure tap, and flanges drilled to match / lb SI specifications. Inside and outside surfaces are primed and given a finish coat of enamel paint. Suitable mounting legs may be fitted in the field, or quoted upon application. F oise ttenuation ttenuation, d #/# SI Flange rilling Octave and enter Frequency, Hz,,,, Model FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- FSH-- art umber om. ap. FM,,,,,,,,,,,,,,, ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ³ ₄ ³ ₄ ³ ₄ ³ ₄ ³ ₄ ¹ ₄ F Weight,,,, umber of lements ominal capacity is based on exit velocity of approximately, ft/min. Filter element capacity may be greater, but this is unrelated to unit capacity. " deep filter frames will hold single elements or dual elements. Weights do not include the weight of the filter elements. Weight is measured with steel weatherhoods. Louvered weatherhoods reduce weight by lb per filter opening.

58 For centrifugal compressors, blowers, engines, and gas turbines. For reciprocating compressors, contact Universal T for recommendations. - Series refilter -F Series Final Filter.. Filters and Rotary Filter-Silencers ositive - and -F absolute filter elements are not cleanable; they must be replaced with new elements according to these instructions. - refilter -F Final Filter For ew UnitsMeasuring ressure rop When new filters or filter-silencers are installed, make the following two pressure drop measurements and record the results for future reference: Measure the pressure drop with all filters installed. Measure the pressure drop with the - pre-filters removed, but the -F final filters installed; this gives the pressure drop across the final filters. Subtract the second value from the first to find the pressure drop across the pre-filters. olyester ad Replacement Replace the polyester pad when visibly dirty. Seal Filter Media Filter Replacement fter the units have been in service and the filters are loaded, determine whether the filters need to be replaced as follows: Measure the pressure drop with all filters installed and subtract the value measured at installation, when the filters were clean, to find the pressure drop across both loaded filters. Measure the pressure drop with the - pre-filters removed, but with the -F final filters installed; subtract the value measured at installation, when the final filters were clean; if the difference is more than ", replace the final filters. Subtract the second value from the first to find the pressure drop across the prefilters. If the difference is more than ", replace the final filters. Sponge eoprene Gasket Waterproof Glass Waterproof Glass Separators luminum luminum Frame - -Gauge Galvanized Steel -F Silicon Fluid Seal -Gauge Galvanized Steel See pages.. for ordering information onstruction leated Media over orrugated Separators leated Media over orrugated Separators Tools eeded for Removal art umber - Removal Tool (eed ) art umber - Removal Tool (eed ) Model art umber Weight Size ressure rop, lean Filter ressure rop, lean Filter - refilter - -* ¹ ₂ Individually tested and certified % efficient by..s. test." water at, FM -F Final Filter - ¹ ₂ ¹ ₂ Individually tested and certified.% efficient by.o.. test for particle size. micron." water at, FM * The polyester pad (part number -) is a " thick roughing filter that fits on the face of the - prefilter. It may be purchased separately in cartons of and should be replaced when it is visibly dirty. Follow the service instructions for replacement.

59 . Rotary Filters and ositive lower Filter-Silencers Filter lements Filter and Filter-Silencers Universal T offers a wide range of sizes and types of air filters and filter-silencers for application on air-moving equipment and internal combustion engines. This catalog covers our standard off-the shelf models. Most models are stocked for immediate shipment. Special types and configurations, as well as larger sizes that are not cataloged, are quoted upon application to meet specific requirements. See pages.. for ordering information asy to specify and order When you work with Universal T, you can simply provide the flow conditions and equipment manufacturer s information, and we can recommend a filter or filter-silencer best suited for your application. Using your information, we can prepare a comprehensive technical proposal and price quotation. Resistance Filter Type W-- W-- W-- W-- W vailable Sizes dia.. long dia.. long Frame Material Media ry or Treated leaning art umber * -* W- Galvanized Steel Weight ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ³ ₄ - rimped Galvanized Steel Wire Mesh Oil-Free dhesive Soap or Solvent Wash W- - Galvanized Steel Rated Flow (FM),,,,,,, - Felted Synthetic (olyester) ry ompressed ir or Soap Wash - Media Surface rea (ft ) luminized Steel aper aper aper ry ompressed ir - Steel ry ompressed ir fficiency % on microns % on microns.% overall % on microns % on microns.% overall % on microns % on microns.% overall % on microns % on microns poxy-oated Steel ry ompressed ir Initial Resistance at Rated Flow (in. of H ). * filters per case. For dry filters, cleaning instructions are included with each unit. Filter types - and W- are available with stainless steel or aluminum frames. Type W- is available with stainless steel or aluminum media

60 S/S Series Filter-Silencers F/F Series Filters.. Filters and Rotary Filter-Silencers ositive S Series (with weatherhood) F Series (with weatherhood) art umbers ipe Size ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₂ --TT* --TT* --TT* --TT* --TT* --TT* --TT* --TT* --TT* --TT* --* --TT* --* --* --* --* --* --* --* -M-TT* -M-TT* -M-TT* -M-TT* -M-TT* -M-TT* -M-TT* -M-TT* -M-TT* -M-TT* -M-* -M-TT* -M-* -M-* -M-* -M-* -M-* -M-* -M-* S Series (with top plate) F Series (with top plate) S S F F Sizes ¹ ₂" " Use S or S Series -L-TT* -L-TT* -L-TT* -L-TT* -L-TT* -L-TT* -L-TT* -L-* -L-TT* -L-* -L-* -L-* -L-* -L-* -L-* -L-* --TT* --TT* --TT* --TT* --TT* --TT* --TT* --* --TT* --* --* --* --* --* --* --* *Specify at end of part number for unit with pleated paper elements, F for pleated felt or W for wire mesh. Refer to page. for filter element details. Universal T s cartridge filters and filter-silencers offer highperformance filtration and silencing in a convenient, economical cartridge configuration. hoose from four standard models for pipe sizes ranging from ¹ ₂" to " and for flow capacities ranging from to, FM. Three types of filter element mediapleated paper, pleated felt, or wire meshare available to suit your application. The F and F series filters are highquality air filters without a silencing section. The F has a removable weatherhood, and the F has a removable top plate. Our S and S intake filter-silencers have a built-in silencing section. The S features a removable weatherhood, and the S has a removable top plate for easy access to the filter element. erformance enefits urability Weatherhoods for F and S sizes ¹ ₂" through " are rugged blue S composite material that may be painted. ll other components are carbon steel construction with a high-quality semigloss enamel finish. High erformance Unique design options, combined with the latest manufacturing techniques, ensure optimum performance and long life even under demanding conditions. Functional hoice of filter only or filter-silencer. asy to Maintain Removable lightweight weatherhood (S and F) or removable top plate (S and F) for easy access to the filter element. Versatile Interchangeable element options for desired filtration characteristics in the same housing. See pages.. for ordering information

61 . Rotary Filters and ositive lower Filter-Silencers S/S Series Filter-Silencers F/F Series Filters See pages.. for ordering information (size) ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₂ (T) (flanged) (T) (flanged) Rated Flow ap. (FM),,,,,, H oise ttenuation, S/S L pprox. Weight with aper lements F S F S F S F S F S F S Use S Series ttenuation, d Use S Series Octave and enter Frequency, Hz,,,, Use S Series ressure rop, ll Models Use S Series ressure rop (in. of H ) Use S Series ercentage of Rated Flow % % % % % Use S Series ll models have a ¹ ₈" FT tap for installation of a gauge or manometer to monitor pressure drop. Sizes ¹ ₂" through " are standard with female pipe thread connection (FT). Sizes " and " are available with female threads or flanges. lease specify threaded or flanged when you order " and " sizes. Sizes " through " are standard with # SI drilled plate flanges. Rated capacity is based upon exit velocity of approximately, ft/min. If pressure drop allowance permits, capacity may be increased by as much as %.

62 Three types of filter elements are available for Universal s cartridge filters and filtersilencers. leated paper elements provide the highest efficiency and are considered standard. leated felt and wire mesh elements are available for less demanding service with respect to efficiency. The three types of elements are completely interchangeable and will fit all S, S, F or F filter housings. S/S/F/F Filter lements.. Filters and Rotary Filter-Silencers ositive leated aper lement Specifications High-quality industrial grade filter paperpleated and oven-cured during production. Oven-cured plastisol end caps with molded sealing beads. Media efficiency:.% on microns; % on micron. Maximum operating temperature: F for units with ¹ ₂" through " pipe sizes. Service Instructions ecause of the low cost of the paper element, it is generally treated as a consumable and replaced when dirty. However, depending on customer preference, the paper element may be cleaned with compressed air and reused. ompressed ir leaning arefully direct compressed air ( SI maximum) through the dry element, opposite the normal direction of flow. fter cleaning, inspect carefully for holes or cracks. If damaged, replace element. (om.) ¹ ₂ ³ ₄ ¹ ₄ ¹ ₂ ¹ ₂ leated Felt lement Specifications urable polyester felt mediapleated. Oven-cured plastisol end caps with molded sealing beads (larger elements for pipe sizes ", ", ", and " have metal end caps with closed cell rubber gaskets). Media efficiency: % on microns. Maximum operating temperature: F for units with ¹ ₂" through " pipe sizes, F for units with " through " pipe sizes using elements with metal end caps. Service Instructions leated felt elements may be cleaned with compressed air (as described for paper elements) or water and reused. Water leaning Rap gently to dislodge accumulated dirt, soak thoroughly approximately minutes in warm water and mild detergent. Rinse thoroughly under low pressure water. ir drydo not dry with compressed air. fter cleaning, inspect carefully for holes or cracks. If damaged, replace element. Replacement lement art umber aper Felt Wire Mesh , - (old) -, - (old) - - -, - (old) - - () , - (old) -, - (old) - - -, - (old) - - () , - (old) -, - (old) - - -, - (old) - -, () - (old) Wire Mesh lement Specifications Galvanized wire-mesh media corrugated construction. May be cleaned and reused indefinitely. Wire mesh elements are considered roughing filters and are not recommended for applications which require efficient filtration of fine particles. pproximate efficiency: % on microns. fficiency will vary with element oil or adhesive coverage. Maximum operating temperature: F for ¹ ₂" through " with oil-free adhesive (flash point of adhesive is F) and F for ¹ ₂" through " without adhesive. Service Instructions ew elements are delivered pre-treated with Universal T s oil-free adhesive. See the back page for details. For best efficiency, wire mesh elements must be retreated after each cleaning. Spray the element on both sides with Universal Oil-Free dhesive, / -, following the directions on the container. For oil treatment, dip the element in S motor oil and drain thoroughly before using. leaning To clean wire mesh elements, wash in solvent or warm water and detergent in a container large enough for complete immersion of element. Rinse completely, drain, and either air dry or use compressed air. fter cleaning and drying, retreat the element with oil-free adhesive or oil as described. See pages.. for ordering information

63 . Rotary Filters and ositive lower Filter-Silencers ILF/ILFS Series In-line Filters Universal T s ILF and ILFS Series of inline air filters are designed to withstand the demanding requirements of pressure and vacuum applications. hoose from ten standard sizes ranging from " to " and flow capacities ranging from to, FM. Three types of filter element media pleated paper, pleated felt, or wire mesh are available to suit your application. See pages.. for ordering information Model ILF- ILF- ILF- ILF- ILF- ILF- ILF- ILF- ILF- ILF- ILFS- ILFS- ILFS- ILFS- ILFS- ILFS- ILFS- ILFS- ILFS- ILFS- art umber --TT* --* --* --* --* --* --* --* --* --* --TT* --* --* --* --* --* --* --* --* --* (nom.) ILF Series Lift Handle Removable Top late Filter lement ³ ₄" T rain ¹ ₄" ressure Tap R R inlet urable onstruction arbon steel construction with a high-quality blue enamel finish. asily removable top plate for access to the filter element. SM ode construction and special materials, such as stainless steel, are available. L ¹ ₄ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ³ ₄ R ³ ₈ ³ ₈ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₈ ³ ₈ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ¹ ₄ ¹ ₂ ¹ ₂ ¹ ₂ L ILFS Series Lift Handle Removable Top late Filter lement ¹ ₄" ressure Tap R ³ ₄" T rain Weight (est.) Rated ap. (FM),,,,,,,,,,,,,, R L inlet ustomize to our pplication esigned for application requirements. Optional design features for special production and assembly conditions are available. hoose an ILF model for an L-configuration or an ILFS for opposed connections. Interchangeable paper, felt, or wire mesh elements, for desired filtration characteristics in a single housing. uilt-in taps for pressure gauges. umber of olts The dimension is clearance required to remove elements. on-sm code construction is suitable for " SI maximum working pressure or " Hg operating vacuum. stimated weight does not include elements. Size " is standard with male pipe thread connection (MT). Sizes " through " are standard with / lb SI drilled plate flanges. Rated capacity is based upon flow velocity of approximately, ft/min. If pressure drop allowance permits, capacity may be increased by as much as %. Refer to page. for filter element details. *Specify at end of part number for unit with pleated paper elements, F for pleated felt or W for wire mesh.

64 .. ILFV Series Vacuum Service In-line ir Filters Filters and Rotary Filter-Silencers ositive Universal T s new ILFV Series of in-line air filters are designed especially for vacuum applications as an economical alternative to our ILF Series. hoose from ten standard pipe sizes ranging from " to " and flow capacities ranging from to, FM. Two choices of filter element mediapleated paper or pleated feltare available to suit your specific application. Universal s Filter Restriction Gauge provides a convenient, accurate means of monitoring filter pressure drop as the filter element becomes increasingly loaded with dirt. In-line air filters are standard with threaded connections for directly mounting the gauge. See p.. for a complete description. Filter lements leated paper elements offer the highest efficiency and are considered standard for the ILFV series units. leated felt elements are also available for less demanding service. oth element types are completely interchangeable and will fit in any ILFV housing. See pages.. for ordering information Model ILFV- ILFV-¹ ₂ ILFV- ILFV- ILFV- ILFV- ILFV- ILFV- ILFV- ILFV- art umber --TT* --TT* --TT* --TT* --* --* --* --* --* --* (nom.) ¹ ₂ ll models have a ¹ ₈" FT tap for installation of a gauge or manometer to monitor pressure drop. The dimension is clearance required to remove elements. on-sm code construction is suitable for " Hg vacuum. ot applicable for pressure applications. Rated capacity is based upon flow velocity of approximately ft/min. If pressure drop allowance permits, capacity may be increased by as much as %. Flange connections are drilled per SI standard for each size. Sizes " through " are standard with male pipe threaded inlet and outlet fitting (MT). Sizes " through " are standard with plate flanges drilled to SI standards (dashed lines on sketch). Weight does not include filter elements. Refer to page. for filter element details. *Specify at the end of part number for paper element or F for synthetic felt. L ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₄ ³ ₄ ¹ ₄ ³ ₄ ¹ ₂ ¹ ₂ ¹ ₂ ¹ ₂ ³ ₄ ¹ ₄ ¹ ₄ Weight (est.) Rated ap. (FM),,,,,

65 . Rotary Filters and ositive lower Filter-Silencers Filter lements See pages.. for ordering information ILF/ILFS Series ILFV Series (nom.) (nom.) ¹ ₂ Replacement lement art umber aper Felt Wire Mesh () () - - () - - () () () - - () - - () () Replacement lement art umber aper Felt Wire Mesh - Oil Free dhesive This is an oil-free product developed for use on viscous impingement type filters. It is a substitute for applications that do not permit oil wetting of the filter elements, such as oil-free compressors. Universal Oil-Free dhesive is available in oz. aerosol spray cans. - Filter Restriction Gauge The Filter Restriction Gauge provides a convenient, accurate means of monitoring filter pressure drops as the filter element becomes increasingly loaded with dirt. artridge Filters and Filter silencers are standard with threaded connections for direct mounting of the gauge.

66 MRIS MUFTURIG MUSO, WI, Sq. Ft. LOIT, WI, Sq. Ft. San Luis otosí, MXIO, Sq. Ft. GLOL SUORT FILITIS UIT STTS ORORT HQURTRS Highway /.O. ox Stoughton, WI US hone + () - US@universalT.com URO Unit, arleyfield Hinckley Leicestershire L I hone + () urope@universalt.com SI IFI ukit atok rescent #- restige entre Singapore Singapore hone +- siaacific@universalt.com II Survey o. // aner, une India hone + India@universalT.com Universal coustic & mission Technologies, Inc. ll rights reserved. - Rev