ilent Silent Operation Proven Performance Cost Effective Silent Check Valves Check Valve

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1 ulletin / Silent Operation Proven Performance Cost Effective ilent Check Silent Check s Certified Lead-Free NSF/NSI & 7 Certified

2 Feature Highlights Threaded C F C Globe F C E Wafer F H G E H. Heavy uty Spring Cycle tested over,000 times to ensure valve dependability and nonslam closure.. Metal-to-Metal Seating For durability and extended life. Corrosion free seat and disc sealing surfaces are precision-machined flat and smooth to meet WW and MSS metal seat leakage criteria. C. Expanded Flow rea Tear-drop contour reduces headloss and provides energy savings.. ouble Guided isc Prevents vibration and wear, ensuring long valve life. E. Resilient Seat Provides zero leakage. Standard on Threaded style, available on Wafer and Globe styles. F. Short Stroke The combination of short stroke and spring return assures non-slam closure. G. Mate-ability Globe style sizes ½ through in. mate to wafer style butterfly valves without the use of spool pieces. H. Concave isc Concave to flow direction providing for disc stabilization, maximum strength and a minimum flow velocity to open the valve.

3 The Val-Matic Silent Check has been the preferred choice by users for over 4 years. Its silent operation, low cost and proven performance in clean water applications has made it a favorite by design engineers and system operators. Silent Operation The Silent Check is preferred over other types of valves because of its silent operation which reduces shock and water hammer. The Silent Check is the fastest closing check valve because of its short stroke and spring-assisted closure. When flow occurs, the disc is lifted off the seat to allow forward flow. When the pump is stopped, the spring in the valve forces the disc closed before flow reverses, providing silent closure. ynamic check valve tests show that surge pressure is significantly reduced when a silent check valve is used. (See Figures & ) Features & enefits resilient o-ring providing a low pressure seal (See Figure ). s pressure increases, the resilient seal is compressed which allows the disc to make contact with the metal portion of the valve seat (See Figure 4). This combined with excess area in the o-ring groove prevents over compression of the synthetic seal. The design also provides disc seal overlap of the resilient seal to prevent indentation ridges that can cause leakage and seal damage. RESILIENT SET 4 Cushioned Swing Check Figure - Resilient Seating etail at Low Pressure Pressure (psi) Pump Stopped Closed Surge Pressure ( psi) ISC SEL OVERLP Time (sec.) Figure - Cushioned Swing Check ynamic Test Results Pressure (psi) 0 Pump Stopped 4 Silent Check Closed Surge Pressure (0 psi) Time (sec.) Figure - Silent Check ynamic Test Results Optional Resilient Seat The Val-Matic Wafer and Globe Silent Check s incorporate an optional disc/seat design that provides zero leakage and reduces the potential for o-ring seal damage. The unique seating action begins with the initial contact between the metal valve disc and the Figure 4 - Resilient Seating etail at High Pressure Installation Versatility ll three styles of Silent Check s can be installed in either horizontal or vertical lines with the flow up or down.* The operation of the valve is not affected by its installation position. s - in. are dual rated to fit between both NSI Class 5 and flanges. In applications where space is limited, the compact wafer style is the preferred choice. Globe Style Silent Check s in sizes ½ - in. are able to mate to wafer style butterfly valves without the use of spool pieces or any other adaptors. (See Illustration on page 5.) Product Certifications Val-Matic Silent Check s are NSF/NSI 7 certified Lead-Free and are NSF/NSI certified for drinking water. Wafer style (- in.) and Globe style (½- in.) Silent Check s are Factory Mutual approved for use in fire protection systems. ll Val-Matic s are manufactured under a certified ISO 900 quality management system. *Note: s 4 and larger require a heavy duty spring for flow down applications.

4 Installation imensions Series THR - Threaded (NPT) psig (ar) imensions in (mm) in (mm) Weight lb (kg) NPT End Connection / /4 /4 /.0 (5.).5 (57.). (.).94 (74.). (4). (5.0). (4.4).00 (50.). (.4).75 (9.). (.7).4 (.). (.7). (.55). (.7). (9.4). (5.) 5. (.) Series - Wafer OLT CIRCLE FOR: - NSI CLSS 5 - NSI CLSS MM PN / OLT CIRCLE FOR: - NSI CLSS (psig) imensions - Inch NSI Class Weight (lb) * 5/ 4.5. /* 5/ * 5/ * 5/ * 5/ * 5/ (ar) *Note: s - in. are dual rated to fit between both NSI Class 5 and flanges. imensions - Metric PN Class Weight (kg) / / / / / /

5 Installation imensions Series - Globe Note: s ½ (5 mm) - in. (mm) mate to wafer style butterfly valves without the use of spool pieces. utterfly isc C / Flanges conform to NSI. Class 5 or or ISO 7005 PN or PN (psig) imensions - Inch NSI Class C Weight (lb) , , , , , , , , ,900 (ar) imensions - Metric PN Class C Weight (kg) 5 / / / / /

6 Construction PRESSURE RTINGS SERIES THR MXIMUM PRESSURE RTINGS ESCRIPTION Threaded Wafer Style Globe Style SIZE RNGE / - (5-50mm) - (50-50mm) - (-mm) - (-mm) / - (5-mm) 4-4 (00-50mm) / - (5-mm) 4-4 (00-50mm) EN CONNECTION Threaded NPT Wafer Class 5/ Wafer Class 5 Wafer Class Flanged Class 5 Flanged Class 5 Flanged Class Flanged Class psig (ar) (7.) (.) (7.) (.) 50 (.) (7.) 00 (0.7) MTERILS OF CONSTRUCTION Threaded Style COMPONENT ody isc Seat Spring COMPONENT STNR OPTIONL ody isc Seat Cast Iron Lead-Free ronze Lead-Free ronze Resilient Seat - STNR Lead-Free ronze Lead-Free ronze Teflon T Stainless Steel Wafer & Globe Style Stainless Steel uctile Iron l-ronze (Lead-Free) Stainless Steel l-ronze (Lead-Free) Stainless Steel una-n EPM Spring T Stainless Steel Heavy uty Spring Headloss Chart Wafer Style CUIC METERS PER HOUR ilent Check Globe Style CUIC METERS PER HOUR ,000,000,000 4,000 5,000,000 7,000,000,000 / / HE LOSS IN FEET OF WTER TYPICL WFER SIZING RNGE 4 FEET/SECON VELOCITY FEET/SECON VELOCITY METERS OF WTER HE LOSS IN FEET OF WTER TYPICL GLOE SIZING RNGE 4 FEET/SECON VELOCITY FEET/SECON VELOCITY METERS OF WTER FLOW OF WTER IN GLLONS PER MINUTE,000,000,000 4, ,000,000,000 4,000 5,000,000 7,000,000,000 FLOW OF WTER IN GLLONS PER MINUTE 0,000 0,000,000 50,000,000 70,000,000 -/ Wafer Cv Globe Cv ,000 5,, 0,

7 Specifications SCOPE. This specification covers the design, manufacture, and testing of / in. (5 mm) through in. (50 mm) ronze Threaded Silent Check s, in. (50 mm) through in. ( mm) Wafer Silent Check s and / in. (5 mm) through 4 in. (50 mm) Globe Silent Check s suitable for pressures up to psig (450 kpa) water service.. The Check shall be of the silent operating type that begins to close as the forward flow diminishes and fully closes at zero velocity preventing flow reversal and resultant water hammer. The dynamic characteristics of the valve shall be published and verified by independent laboratory test data. STNRS N PPROVLS. The valves for use in fire protection systems shall be Factory Mutual approved in Wafer Style sizes in.- in Class 5/, in.- in. Class 5 and Globe Style / in.- in. Class 5/, in. Class 5.. Stainless steel valves shall meet the requirements of SME.4 and MSS SP-.. The valves used in potable water service shall be certified to NSF/NSI, rinking Water System Components Health Effects, and certified to be Lead-Free in accordance with NSF/NSI 7..4 Manufacturer shall have a quality management system that is certified to ISO 900 by an accredited, certifying body. CONNECTIONS. Threaded Style valves shall be provided in sizes ½ in. (5mm) through in. (50mm) and have a two-piece body with female threaded NPT ends.. Globe style valves shall be provided in sizes / in. (5 mm) through 4 in. (50 mm) and have flat faced flanges in accordance with SME. for Class 5 or Class iron flanges or in sizes 5 mm to 0 mm in accordance with ISO 7005 PN or PN. s in. ( mm) and smaller flanged valves shall be capable of mating directly to a wafer butterfly valve without disc interference.. Wafer style valves shall be provided in sizes in. (50 mm) through in. ( mm) for installation between SME. Class 5 or Class iron flanges or sizes 50 mm to mm in accordance with ISO 7005 PN or PN. Stainless steel wafer style valves shall include raised faces for installation between SME.5 Class 50 flanges. ESIGN 4. The valve design shall incorporate a center guided, spring loaded disc and have a short linear stroke that generates a flow area equal to the nominal valve size. 4. The operation of the valve shall not be affected by the position of installation. The valve shall be capable of operating in the horizontal or vertical positions with the flow up or down. Heavy duty springs for vertical flow down installations shall be provided when specified on 4 in. and larger valves. 4. ll component parts shall be field replaceable without the need of special tools. Wafer and Globe styles shall be provided with a replaceable guide bushing held in position by the spring. The spring shall be designed to withstand,000 cycles without failure and provide a cracking pressure of 0.5 psi. 4.4 The wafer and globe disc shall be concave to the flow direction providing for disc stabilization, maximum strength, and a minimum flow velocity to open the valve. 4.5 The valve disc and seat shall have a seating surface finish of micro-inch or better to ensure positive seating at all pressures. The leakage rate shall not exceed the allowable rate for metal seated valves allowed by WW C50 and MSS SP-5 or fl oz (0 ml) per hour per inch of nominal size. 4. Wafer-style valve seats shall be fully retained with full size threads, and sealed with an o-ring. Globe style valve seats shall be contained with a machined counterbore and restrained by the mating flange and gasket. MTERILS 5. The threaded valve body and disc shall be STM 54 copper alloy C70 lead-free bronze. The seat shall be TFE. The spring shall be Type stainless steel. 5. Globe and wafer valve bodies shall be constructed of STM Class cast iron for Class 5 and Class valves and STM 5 Grade CFM for Class 50 stainless steel valves. Optional body material includes STM 5 Grade ductile iron. 5. Globe and wafer seat and disc shall be STM 54 lloy C cast bronze or STM 4 lloy C95 aluminum bronze. Optional trim material includes STM 54 copper alloy C70 lead-free bronze or STM 5 Grade CFM stainless steel. 5.4 Globe and wafer compression spring shall be STM Type stainless steel with ground ends. OPTIONS. resilient seal shall be provided on the seat when specified to provide zero leakage at both high and low pressures without overloading or damaging the seal. The seal design shall provide both a metal-tometal and a metal-to-resilient seal.. interiors and exteriors shall be coated with an NSF/NSI certified fusion bonded epoxy in accordance with WW C550 when specified. MNUFCTURE 7. The valves shall be hydrostatically tested at.5 times their rated cold working pressure and seat tested at the valve. When requested, the manufacturer shall provide test certificates, dimensional drawings, parts list drawings, and operation and maintenance manuals. 7. The exterior of the valve shall be coated with a universal alkyd primer. 7. Silent Check s shall be Series #THR. (Threaded Style), Series # (Wafer Style) or (Globe Style) as manufactured by Val-Matic & Mfg. Corporation, Elmhurst, IL. US or approved equal. 7

8 Val-Matic s quality of design and meticulous workmanship has set the standards by which all others are measured. Quality design features such as the WW Ener G all with its energy efficient design, fusion bonded epoxy and adjustable resilient seating...cam- Centric Plug s have more requested features than any other eccentric plug valve...merican-fv utterfly s include a field replaceable seat without the need for special tools...tilted isc Check s with high strength and wear resistant aluminum bronze trim as standard...silent Check s featuring combined resilient/metal-to-metal seating and are NSF/NSI & 7 Certified...Sure Seal Foot s provided with a heavy duty stainless steel screened inlet...swing-flex and Surgebuster Check s designed with an unrestricted full flow area...ual isc Check s utilizing stabilized components to provide extended life...ir Release, ir/vacuum and Combination ir s provided standard with Type stainless steel trim...vaultsafe family of products includes the FloodSafe Inflow Preventer, FrostSafe two-way damper and the VentSafe vent pipe security cage. These features coupled with our attention to detail put Val-Matic s in a class by themselves. ll products are certified Lead- Free. Val-Matic is totally committed to providing the highest quality valves and outstanding service to our customers. Complete customer satisfaction is our goal. Make the Change to Quality! Specify Val-Matic and Manufacturing Corp. 905 Riverside rive, Elmhurst, IL Phone: Fax: valves@valmatic.com Copyright 0 Val-Matic & Mfg. Corp. ISO 900: certified company /