Industrial Refrigeration Control Valves

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1 limate& Industrial ontrols Industrial Refrigeration ontrol Valves

2 Refrigerating Specialties ivision ased on over 75 years of experience in industrial refrigeration, the Refrigerating Specialties ivision of Parker annifin orporation has grown from an industry pioneer to a leading worldwide supplier of industrial refrigeration control valves. Our reputation for excellence in design engineering, manufacturing capabilities and quality performance has positioned us as a dominant force in the industrial refrigeration marketplace. Industrial Refrigeration ontrol Valves i ISO 9 ERTIIE e Quick elivery inished product is available for iediate shipping from our Mauston plant. We are centrally located for shipping within the United States and close to major cities for international shipping. Our highly efficient shipping department works closely with our export personnel to provide global customers with the very finest delivery services. Our comprehensive product line includes pressure regulators, refrigerant float switches, strainers, automatic flow regulators, solenoid valves, gas powered suction stop valves, check valves, safety relief valves and service valves for both aonia and halocarbon refrigerants all built to the highest quality standards recognized throughout the world for durability and reliability. ustomer Service Meeting customer's requirements is our highest priority. Our global network of representatives have decades of experience with refrigeration systems. Our inhouse service representatives are also highly-skilled and knowledgeable about product selection and application. Product Engineering Our experienced design and manufacturing engineering staff is backed by the technical expertise of Parker's entral Engineering epartment, which specializes in advanced technologies. New designs are tested on highly sophisticated equipment. Manufacturing Our 62, square foot manufacturing plant is located in Mauston, Wisconsin. dvanced technology and state-of-theart machining centers operated by employees dedicated to excellence produce the industry's finest, most dependable products. Products are inspected for precision and uniformity.

3 Pressure Regulators avgeerview The Refrigerating Specialties family of pressure regulators includes valves that control inlet, outlet or differential pressure. Each regulator is available with an assortment of additional variations which enable one regulator to perform several functions. 2 The 2 are compact, small capacity regulators. The 4 are heavy-duty, highflow regulators available in flanged body style in sizes 2- (¾" - 4") and weld end body style in sizes 25-2 (5" - 8"). The daptomode system makes it possible to order the regulator and modules separately for stock or field conversion (¾" - 4") Gauge valves and gauges may be purchased with the regulator or separately (see pages 94-95) (5" - 8") 2 Port Size K ¾" - ¼" Metal-to-Metal (PTE on 4K) Stainless Steel Lapped Metal-to-Metal Gray Iron langed to 5-5 to " - 4" Lapped Metal-to-Metal Stainless Steel Lapped Metal-to-Metal Gray Iron langed to 5-6 to 22 5" - 8" Lapped Metal-to-Metal Stainless Steel Lapped Metal-to-Metal ast Steel Weld End to 5-6 to 22 Pilot Pilot Pilot See Page See Page 23-2 Seat Pilot Seat ody Material ody onnection low luid Temperature Kv v Operation ulletin for Reference Stainless Steel Lapped Metal-to-Metal Gray Iron langed to 5-5 to 22 irect iaphragm 2-2 Stainless Steel Lapped Metal-to-Metal Gray Iron langed.43 (Inlet).5-45 to 5-5 to 22 irect iaphragm 2-2 Stainless Steel Lapped Metal-to-Metal Gray Iron langed -45 to 5-5 to 22 irect iaphragm 2-3 Pressure Setting Ranges Set Point Range pprox. Pressure hange per Turn of djusting Screw actory Set Point (unless otherwise specified) -.3 bar ( - 5 PSIG).7 bar (25 PSI) 2.8 bar (4 PSIG) V 5 g to 8.3 bar (2" g to 2 PSIG).7 bar (25 PSI). bar (5 PSIG) 5.2 to 9.3 bar (75 to 28 PSIG) 3.7 bar (53 PSI) 9.7 bar (4 PSIG) ode 3 or variations "K" and "K", the set point is factory set and sealed. Standard set point for each range is shown in the table to the left. custom setting may be specified by adding the set point in PSIG preceded by a "-" at the end of the model number, i.e. -9. Set point must be valid for the range selected. Pressure Regulators Pressure Regulators

4 Pressure Regulators Pyap T gee 2 ompact Regulators ompact, direct diaphragm operated Maximum rated pressure (MRP): 27.6 bar (4 PSIG) langed connections: PT, SW, WN, OS vailable with close coupled strainer Stainless steel diaphragm escription The 2 type pressure regulators are compact, direct diaphragm operated, for use with refrigerant liquid or vapor. The regulators can be used with aonia, R-22, R-34a, R-44, R-57, certain other refrigerants, oil and other approved fluids with similar pressure, temperature and corrosion characteristics. The regulators are for use in systems where a small inlet or outlet pressure regulator is needed. Materials ody... Gray iron Seat... hrome plated iaphragm... Stainless steel preformed Maximum luid Temperature... 5 (22 ) Minimum luid Temperature (-5 ) esign Pressure (MRP) bar (4 PSIG)! WRNING! OS flanges not suitable for use with aonia. pplication Guide unction 2 ontrol inlet pressure 2 Inlet regulator, greater capacity 2O ontrol outlet pressure Operation Typical pplications Regulate at preset inlet pressure ield adjustable Open on rise in inlet pressure. Small capacity back pressure regulator 2. Small capacity defrost relief regulator Regulate at preset outlet pressure ield adjustable Open on drop in outlet pressure. Gas pressure reducing regulator 2. Liquid or oil pressure reducing regulator Selection Guide escription Ranges vailable (Std. is old) V,,,, V,, onnections vailable Style: PT, SW, WN low oefficient ➂ Kv v K➀ 2P 2M Small apacity ack Pressure Regulator Relief, Give pressure setting ifferential Regulator for ext. connection Electrically ompensated 2T Temperature Operated Regulator, 2 ¼", 3 8", ½", ¾" 2 Small apacity ack Pressure Regulator, ¼", 3 8", ½", ¾".28.5 ¼", 3 8", ½", ¾" O➁ 2O2➁ 2O4➁ V, Small apacity Outlet Pressure Regulator ➀ The 2K Reseating Relief Regulator can be used for various! UTION: When ordering a 2 regulator to be used as a pilot regulator for an 4R, the size of the 4R main regulator must be considered. or 2-5 (¾" - 2") 4R, order an 22 or 2O2E. or 65-2 (2½" - 8") 4R, order an 2 or 2O4E. relief to low side applications including cold liquid line sections where buildup of dangerous hydrostatic pressure is possible. See Safe Operation. ➁ or external pressure connection, specify 2OE, 2O2E or 2O4E. ➂ low coefficients are for standard range. 4 ¼", 3 8", ½", ¾"

5 Pressure Regulators Pyap T gee 2K Relief Regulators ompact, direct diaphragm operated Maximum rated pressure (MRP): 27.6 bar (4 PSIG) langed connections: PT, SW, WN, OS vailable with close coupled strainer escription The 2K pressure relief regulator is direct diaphragm operated, for use with refrigerant liquid or vapor. The regulators can be used with aonia, R-22, R-34a, R-57 and other coon refrigerants. This regulator is used in systems where a small direct operated valve is required as a safety device to relieve trapped liquid lines in the event that a hydrostatic pressure condition develops. The 2K should not be piped or applied as SME certified safety relief valve for use on pressure vessels. The 2K utilizes a special pilot seat designed to provide for a higher flow rate (v) than the 2K relief regulator. dditionally, with a relatively small ratio of diaphragm to pilot seat area, it is designed to open and regulate refrigerant flow quickly through the pilot seat once its set point has been reached. The design of the valve allows for this "quick release" feature. owever, it does not offer the same type of controlled response which may be required for a standard regulator application. or those applications where a small regulator is needed for accurate upstream pressure control, an 2 or 2 direct operated regulator should be considered. Materials ody Material... Gray iron Seat Material... Stainless steel iaphragm Material... Stainless steel Maximum luid Temperature... 5 (22 ) Minimum luid Temperature (-5 ) esign Pressure (MRP) bar (4 PSIG) low oefficient....4 v The 2K is factory set and sealed with a lead seal prior to shipment. Since the valve should be used exclusively as a small internal relief valve, it is designed with the range adjusting spring only. Set points must fall in the 75 to 28 PSIG (5 to 9 bar) range. imensions 73 (6.8") 2 (8.3") 73 (2.9") 7 (4.6") 6

6 Pa4gedaptomode Series Pilot operated for precise control haracterized modulating plug for stable control under low flow conditions Many control variations are possible onvertible to other variations Optional close coupled strainers up to (4") Manual opening stem Easy to service Pressure Regulators lan ged ody Style 2- Ports escription These compact, heavy-duty, pilot-operated regulators are suitable for use with onia, R-22, R-34a, R-44, R-57 and other coon refrigerants and fluids approved for use in refrigeration systems. Weld End ody Style 25-2 Ports The 4 family of regulators includes valves that control inlet, outlet or differential pressure. Each regulator is available with an assortment of additional variations which enable one regulator to perform several functions. The most coon arrangements are shown on pages 9-. Port sizes 2- (3/4 to 4 ) are flanged body valves. Port sizes 25-2 (5-8 ) are weld end body valves. Materials ody: Gray Iron (STM 26 lass ) ast Steel (-352 GR, L) Seat... Lapped Metal to Metal except 4K 2-32 (¾" to ¼")... PTE Pilot Seat... Stainless Steel iaphragm... Stainless Steel, Preformed Ordering Tips 4 regulators with variations are normally ordered factory assembled and tested. owever, the 4Z regulators and the daptomode modules shown on pages are available separately for stock or field conversions. langes are generally ordered with the regulator and are specified as part of the model number. Male flanges are provided for both inlet and outlet. langes may also be ordered separately from pages Maximum luid Temperature... 5 (22 ) Minimum luid Temperature: 2-32 (¾" to ¼") (-5 ) 4-2 (5 8" to 8") (-6 ) esign Pressure (MRP) bar (4 psig) The 4R regulators are available for remote pilot operation. The pilot regulator (2) and pilot solenoid must be ordered separately. Variations, S and, alone or in combination with other variations, require a selection of voltage, coil and pilot light. or variations with two solenoids, each selection applies to both. Not all voltages are available for each type of coil and/ or pilot light. Refer to the table on page 3 for availability. or other variations, enter "" into those fields of the model code. low oefficients Port Size low oefficient Kv (v) Reduced apacity Plugs 5% Kv (v) 35% Kv (v) (7.2) 4 regulators are generally ordered with an upstream strainer to prevent entrance of foreign materials into the valve and the rest of the system (.) (7.5) 5.2 (6.) (33.4). (.7) ack flow through these regulators will occur when outlet pressure exceeds inlet pressure by several PSI. To avoid backflow under these conditions, order the check valve option to install downstream of the regulator (49.5) (7.) 2. (24.5) (.) 3. (35.) 6. (35.) 4. (48.) (2.) (36.) (55.) Regulators will be set to standard set points for the selected range (see page 3). or variations "K" and "K", a custom setting can be indicated at the end of the model number by adding the value in PSI preceded by a "-", i.e. -. or Range V, indicate PSI as above, or es g by adding the setting in es preceded by "-g", i.e. -g (3.6) 7% Kv (v). (.2)

7 a4g edaptomode Modules Pressure Regulators Modudapter (M, SM) The special adapter to which the modular solenoid pilot, modular pressure pilot and Moduplate are bolted. The Series Modudapter (SM) is used with special regulators such as 4S, 4S, etc. urnished with bolts and gaskets. (Standard part of regulators with S,, and Z variations) NOTE: Use SM65 for all 25-2 (5" - 8") 4 regulators. Use with Regulator Size Part Number M (¾"-") 259 M32 32 (¼") 2593 M5 4-5 (5/8"-2") 2595 M65 65 (2½") 2597 M75 75 (3") 2599 M (4") 266 SM (¾"-2½") 25-2 (5" - 8") 2564 SM 75- (3-4 ) 2566 Series Modudapter Moduplate (MP) Provides blankoff or cross-over of pilot circuit on 4S or 4. ttaches to Modudapter. Same for all regulator sizes. To order, specify Part # 258. urnished with bolts and three Orings. Vacuum artridge (V) pilot seat with vacuum range cartridge. Will change range 4, 2 or 2 to vacuum range: 5 g to 8.3 bar (2 in g to 2 PSIG). To order, specify Part # 224. Same for all regulator sizes. urnished with diaphragm and necessary gasket. Outlet Regulator Kit (OR) n auxiliary adapter which converts 4 inlet regulators to outlet regulators with OE variation. Use with Port Sizes urnished with all internal parts, bolts and gaskets. 27 Part Number 2-5 (¾"- 2") (2½"- 8") 257

8 Pa4gedaptomode Modules Pressure Regulators Pressure onnet Kit (PK) onverts any 4, 4O or 2 Series regulator to : Pressure ompensation (P) variation. Standard in range. Use with V vacuum cartridge for V range. lso available 3: pressure compensation (3P) variation. Part Number PK (:) 252 PK3 (3:) 259 urnished with ¼ PT bonnet connection for air or refrigerant pressure, bolts and gaskets. 3: kit includes above plus auxiliary adapter. Same for all port sizes. Temperature onnet Kit (T) irect cting (ooling) onverts to temperature operated (T and OT) variation any 4 regulator. Low range: -3 to 3 (-2 to 8 ) igh range: 2 to 6 (6 to 4 ) Part # Low Range Part # igh Range 2-5 (¾ -2 ) (2½ -8") Part # Low Range Part # igh Range Use with Port Sizes Reverse cting (eating) urnished as complete bonnet assembly including 5.9 x 33.4 (5/8 x 3¼ ) bulb, 6m (2 ft.) capillary, bolts, gaskets and O-rings. onsult factory for 33' capillary. Kit for 4OT (¾ to 4 only) includes tubing assembly for downstream connection. Use with Port Sizes 2-2 (¾ -8 ) Motor onnet Kit (M) onverts to electric compensation (M) variation any 4 Series regulator. Standard in range. ombine with V vacuum cartridge for V range. Motor Style M 3 Motor Style urnished with bonnet, all internal parts, cam, bolts, gaskets, motor and transformer with 24 Volt secondary to operate motor. Same for all ports. Motor ardware Only oneywell Motors V 5/6z Std. am with 2V Transformer 24V 5/6z Std. am with 24V Transformer 24V 5/6z Low Rise am with 2V Transformer 24V 5/6z Low Rise am with 24V Transformer 4-2 m, 2V 5/6z Standard am 4-2 m, 2V 5/6z Low Rise am 4-2 m, 24V 5/6z Standard am 22V 5z Standard am 22V 5z Low Rise am Penn Motors 24V 5/6z Std. am with 2V Transformer 24V 5/6z Std. am with 24V Transformer 24V 5/6z Low Rise am with 2V Transformer 24V 5/6z Low Rise am with 24V Transformer

9 aeggeulator ccessories Pressure Regulators Electric Proportioning Thermostat (T27) Use with "M" variation regulators. : Range to 2 (-3 to 7 ) apillary....5m (5') standard ulb dia. x 6 long (½" dia. x 43 6" long) Sensitivity adjustable....7 to 6.7 (3 to 3 ) Various electronic controllers available To order, specify Part # 388. Well, Separable or use with T27 Thermostat Stainless steel, 3/8" x 5" or use with temperature operated valves (4T) Stainless steel, 5/8" x 3" Part Number or T27 38 or Temperature Operated Valves efrost Timer (T3) U.L. listed djustable for defrost in 3-hour multiples Separate adjustable pump down cycle Separate adjustable fan delay cycle Part Number 5V 6z V 6z (Paragon #632) 386 ontact ratings amps Standard NEM-3 housing andwheel 2½" diameter zinc stem handle. or regulator adjusting stem operation. To order, specify Part # 32. lange Ring-Tube Kits (RT) Use with "L" and "O" variation regu lators lose couples to the valve outlet. Eliminates the need for field piping. 29 Part # Straight (4O/4L) Part # Elbow (4OT) 2-25 (¾" - ") (¼") (⁵ ₈ " ") 65 (2½") (3") (4") ody Size

10 Pressure Regulators S Pa ogleenoid oils maximum coil temperature is not exceeded. onversely, low fluid temperatures permit higher ambient temperatures. lass oil (S6) The molded water resistant lass solenoid coil, available on most Refrigerating Special- ties solenoid valves, is designed for long life and powerful opening force. The standard coil housing meets NEM 3R and 4 requirements. This sealed construction can withstand direct contact with moisture and ice. The coil housing far exceeds the requirements of NEM Standard IS.-.57 salt spray test for rust resistance. The supply circuits must be properly sized to give adequate voltage at the coil even when other electrical equipment is operating. The coil is designed to operate with line voltage from 85% to % of rated coil voltage. Power consumption during normal operation will be 33 watts or less. Standard Encapsulated oils Leads Inrush urrent (mps) 2/6 lue /6 lue and Red /6 Red /5 Yellow and lue /5 Yellow Volts/ertz y definition, lass coil construction will permit coil temperatures, as measured by resistance method, as high as 3 (266 ). inal coil temperatures are a function of both fluid and ambient temperatures. The higher fluid temperatures require lower ambient temperatures so the olding urrent (mps) use Size (mps) or other voltages, contact factory. On transformer coil, the 6 volt leads are always black. lass oil (S6) under voltage. Operating with line voltage below the limit will result in lowering the valve opening pressure differential. The Refrigerating Specialties ivision molded water resistant lass coil is designed for long life and powerful opening force. The lass coil construction will permit coil temperatures, as measured by resistance method, as high as 8 (365 ). urrents The supply circuits must be properly sized to give adequate voltage at the coil leads even when other electrical equipment is operating. The coil is designed to operate at 5% Volt mperage Watt Rating olding Inrush Standard lass Standard oil with 6v Secondary Pilot Light oil Voltages oils are available from stock with most standard voltages (see table below). Non-standard voltages (shown in the shaded area of table) are available as special order. oils are also available with 6V secondary voltage for use with remote pilot lights PLT- and PLT-2. onsult factory for other voltages. Explosion Proof 5 8 ompact, Operator w/leads ompact, Operator w/in onnector 9 PLT- (NEM ) PLT-2 (NEM 4) PLT-5 (NEM 4) 3 2V 48V 24V 48/5 2 Encapsulated w/in & Integral Pilot Light 24/5 Encapsulated w/in onnector 48/6 24/6 24/5 23/5 5/5 24/6/6 2/6/6 L 24/6 2/6 Encapsulated w/leads & Integral Pilot Light 28/6/6 lass Encapsulated w/leads 28/6 vailable Voltages for oils and Pilot Lights ode NOTE: Pilot lights cannot be used with explosion proof or unleaded coils.

11 Solenoid Valves avgeerview Solenoid Valves The Refrigerating Specialties family of solenoid valves includes direct operated and pilot operated valves. Selections for most refrigeration applications are available liquid, suction, hot gas and compressor unloading. Low or no pressure differential, equalizing and vent solenoid in sizes up to 5 (2"). SV2 Explosion proof SV2X and X hazardous environment type solenoids carry NEM 4 and 7 classification. Solenoid Valves S6 N S8 S7 oils are stocked in standard voltages. Nonstandard voltages may be special ordered. See table on page 48 or consult factory. Weld End oon esign Pressure (MRP) ar (4 psig) SV2 only ar (45 psig) Maximum luid Temperature... 5 (22 ) Standard oil ousing... NEM 3R and 4 Explosion Proof ousing... NEM 4 and 7 S5 S6N S8 S7 SV2 S5 S ¾ - PTE Gray Iron Electrically eld Open 3-92 ½ - ¼ PTE uctile Iron Spring losing 3-6 ¼ PTE Gray Iron Gravity losing 3-93 ¾ - ¼ PTE Gray Iron Spring losing bar psi ½ PTE uctile Iron Spring losing PTE uctile Iron -5-6 irect Operated Metal ast Steel Spring losing 3-5 Port Size Seat Material ody Material Minimum Pressure rop to Open Wide Minimum luid Temperature Operation ulletin for Reference Metal Gray Iron Gravity losing 3-93 Metal Gray Iron Spring losing 3-94 Selection Guide Refrigerant Valve Solenoid Solenoid VLVE MOST REOMMENE Listed by Port Size onventional warm high pressure ½ ¾ 2 2½ S8 S6N SV2 SV2 ¼ SV2 SV2 bove -5 (-6 ) S6N bove -45 (-5 ) S6N Suction* bove -3 (-25 ) ot Gas elow 5 (22 ) efrost ypass ompressor elow 5 (22 ) Unloading S6N Refrigerant pplication Liquid Temperature Range S6N S6N S8 S8 SV2 S8 S8 SV2 SV2 S7 SV2 SV2 S7 SV2 SV2 S5 SV2 S5 S5 S5 S5 S8 S7 S7 E E E E E E *lso see Gas Powered Suction Valves. 3

12 Solenoid Valves Pyap T gee S6N oil ousing Surpasses NEM Salt Spray Test ccepts Either Open rame or Totally Encapsulated oils irect cting, Normally losed Operation Replaceable Teflon Seat Manual Opening Stem Stainless Steel Needle Pilot Light vailable Maximum Opening Pressure ifference (MOP) is 2.7 ar (3 psi) escription This compact, heavy duty, direct-acting solenoid valve is suitable for industrial refrigerants for liquid lines, refrigerant oil lines, and as a pilot valve to actuate remote gas powered valves and other pilot actuated devices. The plungerneedle assembly is also used with most other Refrigerating Specialties industrial solenoid valves. This valve is usually ordered with a close-coupled stainless steel screen strainer. (See page 9 for strainer information). Materials ody... Plated uctile Iron Seat... PTE Needle... Stainless Steel Minimum Pressure rop to Open Wide... bar ( PSI) Minimum luid Temperature (-6 ) oil (See page 48)... lass ousing low oefficient....5 Kv (.6 v) imensions 5 (4.5") 5 (4.5") S6N without Strainer PT or SW lange S6N with Strainer 6 (6.29") WN or OS lange 6 (6.29") PT or SW lange WN or OS lange 6 (2.4") 76 (3.") PT or SW 98 (3.86") 37 (.47") PT or SW WN /2 OS 5/8 OS 7/8 OS (3.69") (4.") (4.5") (5.37") 27 (5.") PT or SW 32 lange /2 OS 5/8 OS 7/8 OS 44 (5.69") 52 (6.") 65 (6.5") 87 (7.37") 46 (.8") 5 (.97") 56 (2.22") 67 (2.66")

13 Solenoid Valves Pyap T gee S8 oil ousing Surpasses NEM Salt Spray Test ccepts Either Open rame or Totally Encapsulated oils Replaceable Piston Plug ssembly Stainless Steel Needle Pilot Light vailable Manual Opening Stem Maximum Opening Pressure ifference (MOP) is 2.7 ar (3 psi) escription This compact, heavy duty, pilot-operated solenoid valve is suitable for industrial refrigeration for liquid, suction and hot gas lines, and refrigerant oil lines. The plunger-needle assembly is also used with most other Refrigerating Specialties industrial solenoid valves. This valve is usually ordered with a close-coupled stainless steel screen strainer. (See page 9 for strainer information). Materials ody... Plated uctile Iron Seat... PTE Needle... Stainless Steel Minimum Pressure rop to Open Wide....7 bar ( PSI) Minimum luid Temperature (-6 ) oil (see page 48)... lass ousing low oefficient: Kv (2.7 v) imensions 5 (4.5) 5 (4.5) 6 (6.29) PT or SW WN or lange OS lange 6 (6.29) PT or SW lange WN or OS lange 6 (2.4") 98 (3.86) PT or SW 37 (.47) 76 (3.) PT or SW WN /2 OS 5/8 OS 7/8 OS (3.69") (4.") (4.5") (5.37") PT or SW 27 (5.) S8 without Strainer S8 with Strainer 34 lange /2 OS 5/8 OS 7/8 OS 44 (5.69") 52 (6.") 65 (6.5") 87 (7.37") 46 (.8") 5 (.97") 56 (2.22") 67 (2.66")

14 Solenoid Valves Pyap T gee SV2 Pilot Operated Molded lass oil onstruction Pilot Light vailable Manual Opening Stem MOP 2.7 bar (3 PSIG); MRP 3. bar (45 PSIG) ll Service from the Top escription This compact, heavy duty, pilot-operated solenoid valve is suitable for aonia and other coon refrigerants, certain oils and other fluids approved for use in refrigeration. This valve may be opened by means of a manual opening stem for servicing or in case of electrical power failure. The valve can be ordered with a close-coupled stainless steel screen strainer (see page 9). The SV2 valve is available with an optional extension tube to raise the solenoid operator and coil housing assembly 5 (2 ) above the valve body to accoodate insulation. When the option is desired, the SV2 solenoid valve should be specified. Minimum Pressure rop to Open Wide...24 bar (3.5 PSI) Minimum luid Temperature (-5 ) oil (see page 48)... lass ousing low oefficients: 3 (½ ) Kv (3. v) 2 (¾ ) Kv (7. v) 25 ( )....3 Kv (2. v) 32 (¼ ) Kv (9. v) Materials ody... uctile Iron Seat... PTE Needle... Stainless Steel imensions MX. imension * (PT,SW) E (WN) (OS) G /2 5/ /2 5/ *OR SV2 56 (2.2") E Weld Neck langes N J ETWEEN TUE STOPS * O..S. Solder langes PT LNGES SW LNGES G OR STRINER J* P PIPE ENGGEMENT llow 38 (.5 ) above valve for removal of coil housing assembly. llow 25 ( ) below valve to operate manual opening stem. N (OS) P (SW) 36 PORT SIZE 2 & 25 (3/4 & ) 3 (/2 ) 7/ / (-/4 ) /8 -/8-3/ /8 -/8-3/ /4 -/ /8-5/8 2-/ /8-5/8 2-/

15 Solenoid Valves Pyap T gee S7 Positive Lift, eld Open Electrically Standard oil ousing Meets NEM 3R and NEM 4 Rain Tight oil ousing Surpasses NEM Salt Spray Test Gray Iron ody, PTE Seat Molded lass oil onstruction Pilot Light vailable Stainless Steel Needle Manual Opening Stem MRP 27.6 bar (4 PSIG) escription This heavy duty solenoid valve is suitable for aonia and other coon refrigerants, certain oils and other fluids approved for use in refrigeration. The S7 is a pilot operated, positive lift valve. The valve may be opened by means of a manual opening stem for servicing or in case of electrical power failure. It is advisable to install a strainer upstream of each valve to prevent entrance of foreign material into the valves and the rest of the system. Refrigerating Specialties strainers are available to close-couple to valve inlets (see page 9). Minimum Pressure rop to Open Wide... bar ( PSI) Minimum luid Temperature (-25 ) oil (See page 48)... lass ousing low oefficients: 2 (¾ ) Kv (8. v) 25 ( ) Kv (. v) Materials ody... Gray Iron Seat... PTE Needle... Stainless Steel imensions MX. P PIPE ENGGEMENT E 8 RE. WEL NEK LNGES N ETWEEN J TUE STOPS O..S. SOLER LNGES OR STRINER 98 (3.9 ) PT LNGES SW LNGES (PT, SW) E (WN) (OS) J N (OS) MM IN MM IN MM IN MM IN MM IN MM IN MM IN MM IN MM IN P (SW) MM IN 3.5

16 Solenoid Valves Pyap T gee S5 Standard oil ousing Meets NEM 3R and NEM 4 Rain Tight oil ousing Surpasses NEM Salt Spray Test Replaceable Piston Plug ssembly Molded lass oil onstruction Pilot Light vailable Stainless Steel Needle Manual Opening Stem MOP is 2.7 bar (3 PSIG); MRP is 27.6 bar (4 PSIG) escription This heavy duty, pilot-operated, gravity closing solenoid valve is suitable for aonia and other coon refrigerants, certain oils and other fluids approved for use in refrigeration. The valve may be opened by means of a manual opening stem for servicing or in case of electrical power failure. The valve can be ordered with a closecoupled stainless steel screen strainer (see page 9). Minimum Pressure rop to Open Wide....7 bar ( PSI) Minimum luid Temperature (-25 ) oil (see page 48)... lass ousing External onnection for Outlet Pressure (S5E)... ¼ PT Materials ody... Gray Iron Seat: 32 (¼")... PTE 4-75 (5 8" - 3")... Metal Needle... Stainless Steel low oefficients: 32 (¼") Kv (9. v) 4 (5 8") Kv (37. v) 5 (2") Kv (5. v) 65 (2½") Kv (82. v) 75 (3") Kv (5 v) imensions MX. PORT SIZE 32 (-/4 ) imension 4 & 5 (5/8 & 2 ) 65 (2-/2 ) 75 (3 ) P.P.T. OR S.W (PT,SW) E (WN) /8-5/8 2-/8-5/8 2-/8 2-5/8 2-5/8 3-/8 3-/8 3-5/8 (OS) G /4 -/2 -/ J /8-5/8 2-/8-5/8 2-/ P (SW) /8 3-/8 3-/8 3-5/ /4 -/2 -/ G OR STRINER ETWEEN TUE STOPS WEL NEK LNGES 25. PT SW N 2-5/ N (OS) E J O..S. SOLER LNGES

17 Solenoid Valves Pyap T gee (2-) Standard oil ousing Meets NEM 3R and NEM 4 Rain Tight oil ousing Surpasses NEM Salt Spray Test Molded lass oil onstruction Pilot Light vailable Stainless Steel Needle Manual Opening Stem MOP is 2.7 bar (3 PSIG); MRP is 27.6 bar (4 PSIG) escription This heavy duty solenoid valve is suitable for aonia and other coon refrigerants, certain oils and other fluids approved for use in refrigeration. The is a pilot operated valve that may be opened by means of the manual opening stem for servicing or in case of electrical power failure. Materials ody... Gray Iron Seat... PTE (3-32), Metal (4-) Needle... Stainless Steel low oefficients: 2 (¾ ) Kv (7.2 v) 25 ( ) Kv (. v) 32 (¼ ) Kv (7.5 v) 4 (5 8 ) Kv (33.4 v) 5 (2 ) Kv (49.5 v) 65 (2½ ) Kv (7. v) 75 (3 ) Kv ( v) (4 ) Kv (62 v) Minimum Pressure rop to Open Wide 2-32 (¾" - ¼")....4 bar (2 PSI) 4- (5 8" - 4") bar (4 PSI) Minimum luid Temperature 2-32 (¾" - ¼") (-5 ) 4- (5 8" - 4") (-6 ) oil (See page 48)... lass ousing imensions PORT SIZE P PIPE ENGGEMENT N ETWEEN TUE STOPS MX. O..S. SOLER LNGES J E WEL NEK LNGES (PT LNGES) (SW LNGES) G OR STRINER Note: llow (4") above valve for removal of coil housing and coil. imension 2 (3/4 ) & 25 ( ) 32 (-/4 ) 4 & 5 (-5/8 & 2 ) 65 (2-/2 ) 75 (3 ) (4 ) (PT,SW) E (WN) (OS) G J ¼ ½ P (SW) / 8 5/8 2/8 5 /8 2/ / 8 25/8 3/8 3/8 35/ / / 2/ / 2/ 2/ 2/ 3/ 3/ 3/ 4/ N (OS) ½ -/ / /

18 Solenoid Valves Pyap T gee (25-2) Pilot Operated Welds directly in the Line No langes Removable Seat is Serviceable from Top Side Streamlined luid low Pattern ast Steel ody, STM No. 352 Grade L PTE Pilot Seat Molded lass oil onstruction Manual Opening Stem MOP 2.7 bar (3 PSIG); MRP 27.6 bar (4 PSIG) escription These heavy duty, spring closing solenoid valves are suitable for control of aonia and other coon refrigerants, certain oils and other fluids approved for use in refrigeration valves. They weld directly in the line and do not require flanges. The W are pilot operated valves using upstream pressure for the moving force, and require a minimum of.2 bar (3 psi) pressure drop to fully open. The valves are normally closed. Minimum Pressure rop to Open Wide....2 bar (3 PSI) Temperature Range to 5 (-5 to 22 ) oil (see page 48)... lass ousing Materials low oefficients: 25 (5 )... 7 Kv (2 v) 5 (6 ) Kv (36 v) 2 (8 ) Kv (55 v) ody... ast Steel (STM 352 Grade L) Seat... Metal Needle... Stainless Steel imensions imension L L W W (5 ) 5 (6 ) 2 (8 )

19 Solenoid Valves R Paeg meote Pilot Light ssembly Pilot Light ssembly is ompletely Self-ontained Gives Visual Observation of Solenoid Valve Operation Standard onduit ox or Weatherproof esign P LT- escription The PLT- assembly is completely self-contained, consisting of a standard conduit box with multiple knockouts for connecting to the R/S coil housing cover. The pilot light is a standard 6-volt bulb. The PLT-2 pilot light assembly is completely self-contained, consisting of a cast aluminum conduit box with /2" PT connections, a gasket sealed cover and a moisture sealed pilot light. The light is a standard 6-volt bulb. Transformer coils can be furnished for 2, 28, 24 volts 6 ertz and 5 and 23 volts 5 ertz all with a 6-volt secondary winding. The PLT-5 pilot lights wire directly to line voltage. The bulb is 6 Watts for 2V applications and Watts for 28/24V applications. The large base uses an S6 double contact bayonet bulb. No special transformer coil is required. The PLT-5 weatherproof unit has a cast aluminum box with stamped aluminum cover and rubber gasket. The assembly uses rubber washers to maintain weatherproof condition and is designed for outdoor use. PLT-2 Ordering Information Voltage Lens olor PLT-2 G 2 3 PLT- PLT-2 PLT-5 Transformer Style, NEM Transformer Style, NEM 4 irect Wired, Weatherproof Voltage 6V Secondary 2/6 28/6 or 24/6 PLT- & PLT-2 only PLT-5 only 46 Lens olor G R W Green (std) Red mber White PLT-5

20 Oavgeerview P Very low pressure drop for low temperatures Ideal for overfeed or flooded systems Use in Vertical or orizontal Line Pilot onnection ontains isc Strainer between a Pair of langes Suitable to -5 (-6 ) Main valve can lie on its side for minimum pressure drop with two-phase flow Manual opening stem ondenser gas powered piston and heavy return spring on S9 overcome viscous oil conditions Gas Powered Valves Gas Powered Suction Stop Valves K2 K5 oon Max. Opening Pressure ifference bar (3 psig) esign Pressure (MRP) ar (4 psig) Maximum luid Temperature... 5 (22 ) oil Insulation... Molded Waterproof lass Standard oil ousing... NEM 3R and 4 S9 Weld End ody Port Size K2 K2 K5 K5 S9 S ¼" PTE Gray Iron -5-6 Normally Open " - 6" ¼" PTE Gray Iron -5-6 Normally Open " - 6" 2" - 4" Metal Gray Iron -5-6 Normally losed 3-9 5" - 8" Metal ast Steel -5-6 Normally losed 3-5 Seat Material ody Material Minimum Pressure rop to Open Wide Minimum luid Temperature bar psi Operation ulletin for Reference Metal Gray Iron -5-6 Normally Open 5-2 Metal Gray Iron -5-6 Normally Open 5-23 Selection Guide Refrigerant pplication Suction Refrigerant Temperature Range bove -5 (-6 ) Normally Open* bove -5 (-6 ) Normally losed* VLVE MOST REOMMENE Listed by Port Size ½ ¾ K2 K2 Use larger size ¼ K5 K5 Use larger size Recoendations assume no highly viscous oil, dirt, moisture or foreign substance in refrigerant; also no abnormal shock impact below -3 (-25 ) ½ K2 K5 K2 K5 K2 K5 K2 K5 K2 K5 K2 K5 S9 S9 S9 S9 S9 S9 S9 * Use K2 only above -3 (-25 ) if not powered by near oil free hot gas, such as in rotary screw compressor systems

21 Gas Powered Suction Stop Valves Pyap T gee K2 Normally Open Low Pressure rop eavy Return Spring Manual Opening Stem Use in Vertical or orizontal Line Main Valve an be Installed on Side Maximum Rated Pressure (MRP): 27.6 bar (4 psig) escription These piston type, pressure powered, normally open, heavy duty valves are built with control valve precision. ll are equipped with flanges and manual lift stem. The 32 (¼") port size has a PTE main seat; 4 (5/8") port and larger have a metal to metal seat. Minimum Pressure rop to Open Wide... bar ( PSI) Minimum luid Temperature (-6 ) Materials oil (See page 3)... lass ousing ody... Gray Iron low oefficient: 32 (¼ ) Kv (9. v) 4 (⁵ ₈ ) Kv (37. v) 5 (2 ) Kv (5. v) 65 (2½ ) Kv (82. v) 75 (3 )... 3 Kv (2 v) (4 )... 7 Kv (2 v) 25 (5 ) Kv (285 v) 5 (6 ) Kv (4 v) Seat: 32 (¼ )... PTE 4-5 (5/8-6 )... Metal Needle... Stainless Steel imensions J OS SOLER LNGES E MX..P.T. OR S.W. W.N. LNGES G PT SW IMENSIONL T PORT SIZE E 32 ¼ / ½ G J

22 Gas Powered Suction Stop Valves Pyap T gee K5 Normally Open Low Pressure rop Manual Opening Stem Integrated Pilot Solenoid on 32 to ( -/4" to 4") Sizes Use in Vertical or orizontal Line an be Installed on Side Maximum Rated Pressure (MRP): 27.6 bar (4 psig) escription These piston-type, discharge gas powered, normally open, heavy duty valves are built with control precision. The 32 through (¼" through 4") port size valves are equipped with an attached modular pilot solenoid, 2 pilot regulator, and manual lift stem. The 25 and 5 (5" and 6") port size versions of this unique suction stop valve utilize a larger capacity, remotely piped pilot operated solenoid, the R/S type S8. In addition, the pilot regulator for these two larger sized valves is mounted on top of valve with the strainer disc assembly piped into the side of the adapter. Materials ody... Gray Iron Seat: 32 (¼")... PTE 4-5 (⁵ ₈ "-6")... Metal Needle... Stainless Steel Minimum Pressure rop to Open Wide... bar ( PSI) Minimum luid Temperature (-6 ) oil (See page 3)... lass ousing low oefficient: 32 (¼") Kv (9. v) 4 (5 8") Kv (37. v) 5 (2") Kv (5. v) 65 (2½") Kv (82. v) 75 (3")... 3 Kv (2 v) (4")... 7 Kv (2 v) 25 (5") Kv (285 v) 5 (6") Kv (4 v) G E E imensions imension -/4" -5/8" " 2-/2" 3" 4" 5" 6" E G ody (5" - 6") ody (¼" 4")

23 Gas Powered Suction Stop Valves Pyap T gee S9 langed ody Port Sizes 5- (2" - 4") Low Pressure rop for Low Temperature Operation Suitable to -5 (-6 ) an e Installed in Vertical or orizontal Position Manual Opening eature Maximum Rated Pressure (MRP): 27.6 bar (4 PSIG) escription This heavy duty gas powered valve is suitable for onia, R-22, R44a, and R57, other refrigerants, certain oils and other fluids approved for use in refrigeration. They are pilot operated semi-steel bodied valves. The valves may be opened by means of the manual opening stem for servicing or in case of electrical power failure. The S9 is a pilot operated valve but uses an external source of higher pressure gas to operate the valve, and, therefore requires no minimum pressure drop to open. The external gas pressure must be at least.69 bar ( psi) above valve internal upstream pressure for positive opening. This valve is normally closed. Materials Minimum Pressure rop to Open Wide... bar ( PSI) Minimum luid Temperature (-6 ) oil (See page 3)... lass ousing low oefficient: 5 (2") Kv (45. v) 65 (2½") Kv (65. v) 75 (3") Kv ( v) (4") Kv (8 v) ody... Gray Iron Seat... Metal llow (4.") above valve for removal of coil knob & coil. 35 (2.") imensions 4 (5.5") imension (PT,SW) E (OS) G J N 75 (3") (4") IN MM IN MM IN MM IN / /2 2 MM IN ONN. -5/8 2-/8 2-5/8 2-5/8 3-/8 3-/8 3-5/8 MM IN MM IN MM IN MM ONN. MM IN (9.5") 3/8" PT (Std.) 82.5 (3.25") 2-/ / / / / / / Pressure Pilot Solenoid 3/8" PT (Std) G dd for Strainer PT SW llow 25 (.") below valve to operate manual opening stem E N 2.7-5/ (6.3") leed Pilot Solenoid 4-/8 25 IN (OS) 65 (2-/2") MM ONN. (WN) 5 (2") 78 (7.") etween Tube Stops

24 Gas Powered Suction Stop Valves Pyap T gee S9 Weld End ody Port Sizes 25-2 (5" - 8") Pilot Operated Welds directly in the Line No langes Removable Seat is Serviceable from Top Side oil Size Same as Most Other R/S Valves Streamlined luid low Pattern ast Steel ody, STM No. 352 Grade L PTE Pilot Seat Molded lass oil onstruction Manual Opening Stem Maximum Rated Pressure (MRP): 27.6 bar (4 PSIG) escription These heavy duty, normally closed, gas powered valves are suitable for control of aonia and other coon refrigerants, certain oils and other fluids approved for use in refrigeration. The S9 are pilot operated but use an external source of higher pressure gas to operate the valve and, therefore, require no minimum pressure drop to open. The external gas pressure must be at least.7 bar ( psi) above valve internal upstream pressure for positive opening. Minimum Pressure to Open Wide....7 bar ( PSI) luid Temperature Range to (-5 to 22 ) oil (See page 3)... lass ousing low oefficients: 25 (5 )... 7 Kv (2 v) 5 (6 ) Kv (36 v) 2 (8 ) Kv (55 v) The S9 valve can be ordered without a pilot assembly and the pilot assembly ordered separately (see page 58). Materials ody... ast Steel Seat... Metal imensions imension K K L W L W (5 ) 5 (6 ) 2 (8 )

25 Gas Powered Suction Stop Valves S Pa 9gPeilot ssembly escription The S9 Pilot ssembly can be ordered separately from the valve for stock or field assembly. ssembly includes a S6N pressure pilot solenoid with close coupled strainer, a S6N bleed pilot solenoid, required piping and flange connections. See Note below. The 5 (2") S9 valve uses a 5 size assembly. Valves 65 (2½") and larger use the 65 size assembly. 35 (2.") 4 (5.5") 78 (7.") 6 (6.3") leed Pilot Solenoid leed Pilot Solenoid Pressure Pilot Solenoid 24 (9.5") Pressure Pilot Solenoid with Strainer 3/8" PT (Std.) 82.5 (3.25") ow to Order S9 pilot assembly can be specified by using the symbols in the chart below to develop a model number. Select only those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the chart. Size oil Voltage, oil Style Pilot Light Lens olor 3 2 PS9 Size 5 langes lange Use with 5 (2") S9 valve Use with 65-2 (2½"- 8") S9 valves PT (IPS) S SW (IPS) W Weld Neck (IPS) K OS (US) onnection ¼" 3 /8" ½" ¾" ½" 5 /8" 7 /8" PT only.! WRNING! OS flanges not suitable for use with aonia. Lens olor oil Voltage G R W No oil Standard 2/6 R 2/6/6 2 28/6 S 28/6/6 3 24/6 T 24/6/6 6 5/5 7 23/5 8 24/5 Remote Pilot Lights 5 Non-Standard 24/6 24/5 48/5 K 48V oil Style. langes connected to the piping supplied are standard 3/8" PT. langes selected within the model number will be supplied for both inlet and outlet of the assembly. L* 2 2. oil and remote pilot light selections will be provided for both pilot solenoids. None PLT- (NEM ) PLT-2 (NEM 2 4) PLT-5 With coil style only. See page 3 for voltages. See page 3 for coil style/voltage combinations. NOTES: * No oil or ousing Encapsulated w/36" Leads Encapsulated w/36" Leads & Pilot Light Encapsulated w/in onnector Encapsulated w/in onnector & Pilot Light * Integral pilot light. Lens color selected separately Weights Size kg lb No Pilot Light Green (std) Red mber White

26 heck Valves Oavgeerview P heck Valves K K3 K4 K4 3- (½ - 4 ) 25-2 (5-8 ) Port Size K4 K4 K4 K K ½ Stainless Steel Steel to 5-6 to 22 Yes Yes ¾ - 4 Stainless Steel uctile Iron to 5-6 to 22 Yes Yes Stainless Steel uctile Iron to 5-6 to 22 No No ¾ - ¼ 5/8-6 Metal to Metal Gray Iron to 5-25 to 22 Up to Up to ½ - PT Seat Material ody Material bar psi luid Temperature Limits lose oupling to Valve* lose oupled Inlet Strainer Minimum Pressure bar rop to Open Wide psi ulletin for Reference esign Pressure (MRP) PTE Gray Iron to 5-25 to 22 Yes Yes K3 PTE Steel to 5-25 to 22 No No *lose coupling using male adapter ring to outlet of R/S control valves. Selection Guide Port Sizes K4 3-2 (½ - 8 ) K 2-5 (¾ - 6 ) K3 /2 to PT Typical pplications. Liquid lines 2. igh speed compressor discharge lines (Not recoended for slow speed compressor discharge lines) 3. Pump discharge lines 4. Suction lines down to -55 (-6 ) 5. ot gas lines from pan to evaporator 6. efrost relief regulator venting to an imtermediate pressure 7. Prevent receiver pressure from backing up into a cold condenser 8. Prevent liquid returning to compressor during shutdown 9. Prevent liquid from flowing down into drain pan. Prevent reverse flow in suction line due to unusual load conditions. Slow speed compressor discharge lines 2. Liquid lines 3. Suction lines down to -3 (-25 ) 4. Side port applications on screw compressors. ot gas lines from pan to evaporator 2. Liquid lines 59 Mounting ny position NOTE: Not recoended for side port applications on screw compressors orizontal lines with opening stem in the vertical position ny position

27 heck Valves Pyap T gee K Rugged, eavy uty Low Pressure rop Piston Gravity losing langed, horizontal mounting esign Pressure(MRP): 27.6 bar (4 psig) Manual Opening Stem escription These piston type, gravity closing, heavy duty check valves are suitable for onia, R-22, R-34a, R-44, R-57, other refrigerants, certain oils and other fluids approved for use in refrigeration. ll K check valves are flanged and are suitable for mounting only in horizontal lines with opening stem in the vertical position. They have a manual opening stem for manual operation. They may be ordered with a male adapter ring (through 4" size) for close coupling. minimum pressure difference of.3 bar (.5 psi) is required to open the valve. Materials ody... Gray Iron J OS Solder langes Seat... PTE (2-32), Metal (4-5) esign Pressure (MRP) bar (4 PSI) luid Temperature Range to 5 (-25 to 22 ) low oefficients: 2 (¾ ) Kv (9.5 v) 25 ( ) Kv ( v) 32 (¼ )... 6 Kv (9 v) 4 (⁵ ₈ ) Kv (37 v) 5 (2 ) Kv (5 v) 65 (2½ )... 7 Kv (82 v) 75 (3 )... 3 Kv (2 v) (4 )... 7 Kv (2 v) 25 (5 ) Kv (285 v) 5 (6 ) Kv (4 v) E MX. PT or SW WN langes G imensions PT SW IMENSIONL T PORT SIZE E G J in. in. in. in. in. in. in. in. in. in. 2, 25 ¾, ¼ , ⁵ ₈, 22½

28 heck Valves Pyap T gee K3 Small, ompact, eavy uty eavy Spring losing Installs in any position PTE Seat Threaded Ends Maximum Rated Pressure (MRP): 27.6 bar (4 psig) escription: This compact, heavy duty, threaded in-line check valve is suitable for onia, R-22, R-34a, R-44, R-57 and other refrigerants, certain oils and other fluids approved for use in refrigeration. The K3 is spring closing and can be installed in any position. The K3 is available with /2, 3/4, and PT connections. ow to Order K3 check valves can be specified by using the symbols in the chart below to develop a model number. Select only those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the chart. Materials ody... Zinc-plated Steel Seat... PTE esign Pressure (MRP) bar (4 PSI) luid Temperature Range to 5 (-25 to 22 ) low oefficients: ½ Kv (9.5 v) ¾ Kv (.5 v) Kv (.5 v) (2.6") PT 96 (3.379") (.785") 64 6 K3 Port Size imensions PT Port Size ½" emale NPT ¾" emale NPT " emale NPT

29 Safety Relief Valves, M imensions E N M OUTLET J OUTLET K INLET L INLET Single Valve imension 2 G Manifold with Two Valves E G I K L M N Inlet ¾ ¼ ¼ Outlet ¼ 4 ½ 5 2 ompanion Mounting lange (Male) ual Stop Valve Manifold Size Oval lange Tongue Pattern Inlet onnection Valve pplicable ½" ¾" PT 2 ¾" " PT 3 ¼" ¼" PT 4, 5 ¼" ½" PT 4, 5 ottom Inlet onnection Size M2 ¾" PT Note: lange with bolts only. Gaskets supplied with Relief Valve. ompanion Mounting lange (emale) Size Oval lange Tongue Pattern Valve pplicable Inlet onnection ½" ¾" PT 2 ¾" " PT 3 ¼" ¼" PT 4, 5 ¼" ½" PT 4, 5 M3 " PT M4 ½" PT Note: olts supplied with manifold. Note: lange with bolts only. Gaskets supplied with Relief Valve. 66

30 Safety Relief Valves SR or use with R-22, R-77, R57 and other coon refrigerants esigned to SME VIII, SRE and IIR standards Excellent repeatability Unaffected by vibration Pressure relief settings from bar (5-4 psig) apacities Pressure Setting psig Lbs. per Min air SM ir SR SR SR SR Size escription Parker Refrigerating Specialties has developed a family of low capacity safety relief valves to comply with the newly drafted NSI/SRE 5 safety code for mechanical refrigeration. The low capacity SR Safety Relief Valve meets the requirements for new installation and municipal ordinances. Precision machined moving parts of stainless steel and a PTE disc prevent sticking due to corrosion or cold welding, to assure valve opening at the set pressure long after installation. See Selection ata on page 65. Refer to ulletin 7-. Manifold M manifolds designed to SME VIII, SRE and IIR standards are available for use with SR/SR valves. See following page for dimensions. /2" inlet... Part Number 77 3/4" inlet... Part Number 78 imensions Size SR SR2 SR3 SR ¾" PT " PT ¼" PT ½" PT ½" PT ½" PT ¾" PT ¾" PT ccessories Rupture disc assemblies, pressure transducer, pressure switch and Teltale pressure gauge are available for the SR Series valves. onsult factory for details. ow to Order Safety relief valves can be specified by using the symbols in the chart below to develop a model number. Select only those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the chart. onnection Sizes SR Pressure Setting Pressure Setting onnection Size /2" PT inlet, 3/4" PT outlet /2" PT inlet, " PT outlet 3/4" PT inlet, ¼" PT outlet 3/4" PT inlet, ½" PT outlet PSI.3 ar 2* 2 PSI PSI 7.2 ar 3 3 PSI 2.7 ar 35* 35 PSI 4 4 PSI 27.6 ar * Non-standard setting; available at additional cost.

31 Safety Relief Valves SR or use with R-22, R-77, R57 and other coon refrigerants esigned to SME VIII, SRE and IIR standards Excellent repeatability Unaffected by vibration Pressure relief settings from bar (5-4 psig) apacities Size ll Pressure Setting, psig Lbs. per Min air SM ir escription igh capacity SR Safety Relief Valves are designed and constructed to meet the requirements of Section VIII SME oiler and Pressure Vessel ode and NSI/SRE 578. esigned to address the large installed population of safety relief valves, they are direct replacement for competing products. Manifold M manifolds designed to SME VIII, SRE and IIR standards are available for use with SR/SR valves. /2" inlet... Part Number 77 3/4" inlet... Part Number 78 See Selection ata on page 65. Refer to ulletin ccessories Rupture disc assemblies, pressure transducer, pressure switch and Teltale pressure gauge are available for the SR Series valves. onsult factory for details. imensions Size SR SR2 SR ¾" PT " PT " PT ½" PT ½" PT ¾" PT ow to Order Safety relief valves can be specified by using the symbols in the chart below to develop a model number. Select only those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the chart. onnection Sizes SR Pressure Setting Pressure Setting onnection Size 2 3 /2" PT inlet, 3/4" PT outlet /2" PT inlet, " PT outlet 3/4" PT inlet, " PT outlet PSI.3 ar 2* 2 PSI PSI 7.2 ar 3 3 PSI 2.7 ar 35* 35 PSI 4 4 PSI 27.6 ar * Non-standard setting; available at additional cost.

32 and Valves Oavgeerview P Suitable for fluorocarbon refrigerants (R-22, R-34a, R-44, R-57 and others), aonia (R-77), nitrogen and carbon dioxide. Excellent flow coefficient low pressure drop andwheel and seal cap interchangeable on all valves vailable as hand expansion valve in sizes up to 2" for socket weld and ½" for threaded connection Same price for hand wheel or seal cap, globe or angle type, hand expansion or standard valve Save insulation cost ngle and Valves Operating esign Pressure (MRP) ar (4 psig) luid Temperature Range to +24 (-5 to +4 ) or and Shut-Off Valves, refer to ulletin 8-. Globe "T" or and Expansion Valves, refer to ulletin 82-. Globe "Y" General Size ody onnections ody Material onnet Material Packing Material Seat Material ¼", 3 8", ½" ngle and Globe Threaded and Socket Weld ast Steel orged Steel Non-sbestos Graphite 25% arbonilled PTE ¾", ", ¼", ½" ngle and Globe Threaded and Socket Weld ast Steel orged Steel Non-sbestos Graphite 25% arbonilled PTE 2", 2½", 3", 4", 5", 6", 8" ngle and Globe Socket Weld and utt Weld ast Steel uctile Iron Non-sbestos Graphite 25% arbonilled PTE ", 2" ngle and Globe utt Weld ast Steel abricated Steel Non-sbestos Graphite 25% arbonilled PTE low oefficients and Weights Valve Size es ¼ 3 8" ½" ¾" " ¼" ½" 2" 2½" 3" 4" 5" 6" 8" " 2" Globe "T" Kv v low oefficients Globe "Y" Kv v ngle Kv v Globe "T" kg lb Weights Globe "Y" kg lb ngle kg lb

33 Liquid low Regulators P Tyap gee R (djustable low) External djustment Easy Setting Scale Eliminates System alancing Integral heck Valve "rost ree" Neck Liquid low Regulators escription This precision built, heavy duty, self-contained, iron bodied utomatic low Regulator is used as a liquid control device for onia Overfeed Systems. This adjustable flow regulator, once set, maintains a constant flow rate of liquid to the evaporator; it also serves as a check valve to prevent back flow into the liquid line from the evaporator during pressure reversals such as occur during hot gas defrost. Refer to ulletin 4-. imensions 79 (3.2") Maximum Rated Pressure (MRP) bar (4 psi) Pressure drop range to 3.5 bar (5 to 5 psi) Operating temperature to 38 (- 4 to ) 37 (2.47") Max. 32 (.25") pplication Note n R flow regulator is designed to maintain an approximately constant liquid refrigerant delivery rate into the evaporator. owever, it is not an expansion device capable of controlling vapor or two-phase flow. esign conditions, which allow for the formation of flash gas as liquid flows through the regulator, can cause the R to chatter and result in irregular liquid delivery. 4 (4.") 86 (7.3") 3/8, /2 or 3/4 PT or SW This feed device should be applied only where sufficient liquid subcooling exists to ensure that its outlet pressure will never be reduced to less than the liquid s saturation vapor pressure. R s are not recoended for application in gas displacement systems or where controlled pressure receivers deliver liquid to the evaporators. 28 (8.56") 3/8, /2 or 3/4 WN ow to Order R automatic flow regulators can be specified by using the symbols in the chart below to develop a model number. Select only those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the chart. Inlet Outlet lange lange Strainer 4 R lange Weights Less flanges kg (8 lb) With flanges kg (9 lb) With strainer & flanges kg ( lb) None S W /8 PT (IPS) SW (IPS) Weld Neck (IPS) IN Weld Neck S onnection X Less langes 77 4 ½ ¾ 5 2 Strainer N S No Strainer w/strainer

34 Liquid low Regulators Pyap T gee R (ixed low) Eliminates System alancing Overcomes low luctuations Permits evaporator optimization escription The ixed low Regulator is used as a liquid flow control device for Liquid Recirculation Systems and is suitable for use with R-22 and onia. The regulator establishes and maintains a constant flow rate determined only by the selected orifice number and independent of initial pressure drop or changes in the inlet or outlet pressure. Materials ody... STM 26 lass cast iron Piston... Stainless steel low Orifice and Valve ody ap... Steel Maximum Rated Pressure (MRP) bar (4 psi) pplication Note Pressure drop range to 3.5 bar (5 to 5 psi) igher pressure drops up to 3 psi will not harm the regulator but can cause poor flow control. The R does not provide a check valve feature and will permit flow in the opposite direction; therefore, for hot gas defrost applications, or any other application where the pressure in the evaporator may occasionally exceed the pressure in the low pressure liquid line, a check valve must be installed upstream. Operating temperature to 38 (- 4 to ) Refer to ulletin 4-5. ow to Order R fixed flow regulators can be specified by using the symbols in the chart below to develop a model number. Select only those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the chart. Orifice Inlet Outlet Number lange lange Strainer R K5 lange Orifice Number* * Orifice number aonia. K5 S onnection X Less langes R Less langes, w/male dapter Ring None S W K /8 ½ ¾ ½ 5/ PT (IPS) SW (IPS) Weld Neck (IPS) OS (US) IN Weld Neck Strainer N S No Strainer w/strainer Weights! WRNING! OS flanges not suitable for use with aonia. 78 Less flanges....4 kg (3 lb) With flanges....8 kg (4 lb) With strainer & flanges kg (6 lb)

35 Proggeraable Liquid Level ontroller Oversized keypad on front panel for prograing Easy to read enlarged LE digital display 5 prograable 6 amp fused relays Level simulation mode facilitates control wiring check and test Large enclosure with separable terminal blocks accoodate up to 4 gage wire Plug-in style terminal blocks with recessed screws onventional intstrument wiring from controller to probe 2/24 V 6 z or /22 V, 5 z Power 4-2 m Output Signal Liquid Level ontrol Liquid Level ontrol Purpose The Prograable Liquid Level ontrol provides remote liquid level management for industrial refrigeration. The PLL is designed for use specifically with Parker's epth Tracker transducer liquid level probe. The PLL provides the power source for the current loop of the probe. The transducer probe is used to provide a current signal proportional to the vertical liquid level in a standpipe or vessel. The PLL serving as a switching mechanism also converts the return signal and performs up to 5 prograable relay functions. imensions Wiring Unit is 9½" high by 6¾" wide by 2" deep. The separable terminal blocks on the PLL will accoodate up to 4 gage wire. The Line Voltage Input can be either 2/24V 6z or /22V 5z. The PLL provides the power source for the current loop of the transducer probe. The prograable relays are individually 5 amp fused. Relays are equipped with normally open and closed terminals and can be wired as either. The maximum recoended distance between PLL and probe is 5 ft. Refer to ulletin 6-5. PLL hannels: igh Red 2 Level ontrol 3 Level ontrol 4 Low Green 5 Low Red ow to Order PLL Prograable Liquid Level ontroller Weight " onduit Knockout Strain Relief.8 kg (4 lb) 8

36 Liquid Level ontrol Paeg pe th Tracker Transducer Probes Probe lengths: 2, 3, 4, 5, 6, 7, 8, & 2 feet Integrated construction achieved by molding the PTE sleeve directly to the center rod Electrical connection via 3/4 conduit boss or jacketed counications cable of suitable temperature/moisture protection ully potted circuit board Local or remote digital read-out options Optional display riser accoodates column insulation Unique probelok connection option actory pre-calibrated for aonia for -% level output in 4" IPS Standpipe. The electronics may be recalibrated in the field to permit viewing of liquid level over any segment representing more than 4% of the probe s overall length. ll wetted parts are stainless steel construction to prevent corrosion escription Probe with Local isplay and Riser The epth Tracker Liquid Level Industrial Transducer Probe (ITP) is used to provide a current signal proportional to the vertical liquid level. remote prograable controller (PLL) or microprocessor functioning as a switching mechanism can convert the signal transmitted. This device is for use with refrigerant R-77 (aonia) only. It may be used with liquid temperatures in a range of -77 to 57 (-7 to 35 ). The minimum ambient for circuit board enclosure is -29 (-2 ). imensions R/S Standpipe ap Globe Valve w/orizontal Stem Weld 25.4 (") % Level (rom actory) 2 (4") Min. Level olumn Sight Glasses Minimum Tube Length* Globe Valve w/orizontal Stem Probe Length 5 (2") % Level (rom actory) Weld 6 (.625") Optional Oil rain 25.4 (") Non-Sensing rea of Probe llow for Insulation Space 82 *Minimum Tube Length = Probe Length + 6 (2.375")

37 R Paeg freigerant loat Switch Liquid Level ontrol ermetically Sealed, used Switch ssembly Transparent Switch ousing for Visual Observation Magnetically ctuated, Mechanically Operated Single Stage, Single Pole, ouble Throw Switch loat ontrolled Rugged onstruction Switch ssembly ully Rotatable to Suit Installation Large vailable ifferential Minimizes Short ycling or ctuation of Switch by Liquid Surges s LL, LL, LLS, LLS, LL, LL are U.L. Listed and S ertified IN connector standard escription Refrigerant float switches are suitable for use with onia, R22, R34a, R44a, R57 and other coon refrigerants. This float controlled, magnetically actuated, mechanically operated switch assembly can maintain close control of liquid level. The rugged construction makes it relatively insensitive to disturbances of the refrigeration system or vibration of the attached pipe lines. LL The electrical switch, which is fused, and the operating mechanism are encapsulated within a transparent housing, which ERMETILLY SELS the moving parts and switch from ambient conditions and yet allows observation of the switching motion for determination of the liquid level. LLS Materials Standard hamber... Steel loat all... Stainless Steel s LL, LLS, LL are U.L. listed for outdoor service. esign Pressure (MRP) bar (4 PSI) luid Temperature Range to 65 (-5 to 5 ) mbient Temperature to 5 (-5 to 2 ) Switch... SPT, Snap-acting, non-mercury pplications To control liquid level in: liquid overfeed accumulators flooded surge drums flooded shell & tube chillers high and low pressure receivers intercoolers transfer vessels low or high level monitor Rating... 2/24V, mp, 24 V Pilot uty luid Specific Gravity Range to.7 ifferential... djustable 3-5 (½ -2 ) actory set at 5 (2 ) hamber onnections... ¾ PTor utt Weld Replaceable use Style ag... 7 mp, 24 V Refer to ulletin

38 Liquid Level ontrol R Paagpeid Purgers igh apacity 4 to 32 purge points Stainless steel insulated enclosure (32 L x 2 x 8 ) 36 L stainless steel shell and tube heat exchanger. ll stainless steel interior flange and pipe connections. escription Rapid Purgers remove incondensibles from refrigeration systems. Included as standard on the purger: heck valves Gauge valves Isolation valves Liquid level switch Vapor vent float Water bubbler Temperature controller Liquid drainer Pressure regulator (Shown with side of enclosure removed) Refer to ulletin 75-. ontrollers are available with 4 and 8 purge points (minimicro) or 8, 6, 24 or 32 purge points (microprocessor) and can be easily adapted to any aonia refrigeration plant. ive unique modes of operation allow maximum efficiency with minimal operator adjustments: automatic mode, automatic detection mode, scheduled purging mode, manual mode and remote mode. ow to Order Rapid purgers can be specified by using the symbols in the chart below to develop a model number. Select only those symbols that represent the features desired, and place them in the sequence indicated by the example at the top of the chart. Pressure Range RP Pressure Range L Low Range: System suction es g to 4 PSI igh Range: System suction 5-3 PSI Refrigerant Voltage (ontrol Panel & oils) ontrol Enclosure Purge Points S 8 7 Refrigerant 7 onia Voltage 2 3 E S 86 Purge Points ontrol/enclosure Manual or Explosion Proof 2V 6z 24V 6z 24V 5z Mini-Micro for 4 to 8 Purge Points (Requires ield Wiring) Microprocessor ontrol for 8 or more Purge Points (Separate Mounting, Requires ield Wiring) Remote entral Plant ontrol. Includes Insulated Stainless Enclosure and Local Electrical ontrols None orresponds to Manual or entral Plant ontrolled our, Mini-Micro ontrol only Eight, Either Mini-Micro or Microprocessor ontrol Sixteen, Microprocessor ontrol only Twenty-four, Microprocessor ontrol only Thirty-two, Microprocessor

39 Liquid Level ontrol Paagpeid Purger R imensions Pressure Regulator Pressure Switch and Valve Liquid Line S6N Solenoid Valve Temperature ontroller onia Gauge 864 (34") heck Valve w/isc Strainer 58 (2") Water ubbler Vapor Vent loat and Valve Purge Gas Line Pressure heck Valve eat Exchanger Liquid rainer 83 (32") 94 (37") Notes: Purger styles that could encounter standby or power failure conditions such that vessel pressure could go high, should always be equipped with relief valves. In the case of the Mini-Micro or the Microprocessor ontroller, the control panel is always shipped separately and is mounted in close proximity of the Rapid Purger or at a remote location such as a refrigeration control room. Refer to Purger ulletin 75- for additional information. Refer to Rapid Purger ontroller system information manual for specific operating and prograing information. The Mini-Micro and Microprocessor are different manuals. When ordering a purger with a microprocessor controller with option of condenser fan control and pump cycling, consult factory for additional information. 87

40 Liquid Level ontrol Pa ug toematic Liquid rainer (L) rains Liquid Only Stops low of Vapor Prevents Vapor Lockup uilt-in Strainer No Small Orifices Resists Wire rawing Includes Pilot Light Manual Opening Stem escription Used to drain liquid from defrosting evaporators or heat recovery condensors into a lower pressure portion of the system. Permits flow of liquid refrigerant only. Prevents flow of vapor refrigerant. ll are heavy duty devices intended for use with onia, R-22, R-34a, R-44, R-57 and other coon refrigerants. The L is a combination of a LLS loat Switch, a S8 Solenoid Valve with Strainer and Pilot Light ssembly, a 3/4" and Expansion Valve, and a /4" PT and Expansion leed Valve as well as necessary pipe and fittings, complete for field assembly. Inlet is combination ¾" PT or " butt weld. Outlet is ¾" PT. imensions The rate of flow of refrigerant vapor (or liquid) through the vent valve is dependent upon the pressure difference between the float chamber and the L outlet pressure. It is also possible for the L to maintain a constant flow if the rate of liquid flow into the float chamber is equal to that leaving it. 54 cm (2.4") The L can be manually drained by using the manual opening stem on the S8 solenoid valve. 3/4" or " pipe Refer to ulletin /4" PT outlet connection 48 cm (8.9") 3/4" PT or " WN inlet connection Ordering Information Pilot L oil Voltage oil Style Light Lens olor R 2 G oil Voltage R S T 2/6/6 28/6/6 24/6/6 oil Style 3 Encapsulated w/36" Leads Industrial Open rame w/8" Leads Lens olor G R W Green (std) Red mber White Remote Pilot Light 2 PLT- (NEM ) PLT-2 (NEM 4) 88

41 Miscellaneous laagneges P lange s langes are sold individually and are available in male tongue type to fit sizes 5-5 (½" to 6") and female groove type to fit sizes 5- (½" to 4"). emale Pipe Thread (PT) Socket Weld (SW) Weld Neck (WN). Metric WN flanges also available in connection sizes ranging from 5 to. onsult factory for details. Outside iameter Sweat (OS) steel flanges with integral copper couplings to fit and solder over copper tubing. OS flanges are not suitable for use with R-77 (aonia). NSI flat face flanges are available from 25-2 (5" - 8") for use with the K4 check valve. Miscellaneous The following connection styles are available: 2-olt langes (PT, SW, WN, OS) Slip-On Socket I.. NSI lat ace Weld Neck NSI lat ace WEL SW Socket Weld PT emale Pipe Thread 4-olt langes (SW, WN, OS) lso available in PT langes for sizes 5-25 (3 6" to ") are a 2-bolt oval style. langes for sizes 32- (¼" - 4") are a 4-bolt square style. langes for sizes 25-5 (5" - 6") are an 8-bolt round style and are available as male type only. WN Weld Neck SOLER 5-25 (3/6" to ") Oval OS opper lange Union Kits lange union kits are available to join male and female flanges of the same size (see page 89). lange and Pipe imensions US Pipe Sizes Nominal Inch /4" 3/8" /2" 3/4" " ¼" ½" 2" 2½" 3" 4" 5" 6" 8" ctual O Equivalent Metric Steel Tubing NW (5" to 6") Round 32- (¼" to 4") Square O Socket Weld lange I Inch Weld Neck lange O NSI Slip-On Socket I NSI Weld Neck Neck O l

42 Miscellaneous Liaqgueid rain all Valves P Spring Return to lose RPTE Stuffing ox Ring ll omponents of Lever are Stainless Steel Nitride orrosion Protection low-out Proof Stem esign djustable Packing Gland Investment ast omponents Multifill Seats escription These carbon steel ball valves have a "deadman" spring return handle. Operating torque is approximately three times standard valve torque. onnections are threaded NPT. Materials ody W "eadman" andle... Stainless Steel imensions all... 8-S hrome Plated Stem Packing and Seat... Multifill PTE ody Seal... PTE Retainer, Gland Nut and Stem... 8-S WOG bar (2 psig) old Non-Shock....3 bar (5 psig) Saturated Steam, to 737 (29 es) g vacuum service ederal... WW-V-35, II Ordering Information Size /2" 3/4" " Part # arbon Steel Part # Stainless Steel Weight.6 kg (.3 lb).9 kg (.98 lb). kg (2.35 lb) Size 95 /2" /4" "

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