Swing Check Valve

Sanco Swing check valves are used to prevent flow reversal in piping systems. They are suitable for service in horizontal or vertical (flow up through valve only) piping runs. Swing check valves have low pressure drop and are best suited for moderate velocity applications. Correct sizing of Sanco swing check valves is important. Either too low a line velocity or too high a velocity can damage valve internals and shorten valve life. Service in systems involving rapid and frequent flow reversals, pulsation or turbulent flow should be avoided. Relocating swing check valves within the piping system can often minimize or eliminate problems caused by this type of application. Pacific Valves will be glad toadvise you on your application.

Description

Sanco Swing check valves are used to prevent flow reversal in piping systems. They are suitable for service in horizontal or vertical (flow up through valve only) piping runs. Swing check valves have low pressure drop and are best suited for moderate velocity applications. Correct sizing of Sanco swing check valves is important. Either too low a line velocity or too high a velocity can damage valve internals and shorten valve life. Service in systems involving rapid and frequent flow reversals, pulsation or turbulent flow should be avoided. Relocating swing check valves within the piping system can often minimize or eliminate problems caused by this type of application. Pacific Valves will be glad toadvise you on your application.
Ratings
Sanco Valves must only be used in operating conditions within the appropriate ANSI pressure-temperature ratings for valve class rating and body/bonnet material (see Technical Data section).
Temperature Limitations
Sanco Valves Only use valves within the temperature limitations of their construction. Temperature limitations of body/bonnet materials, trim, bolting, packing and gaskets must all be considered. Special construction for extended service temperatures are available on application.
Material And Service
Sanco Cast steel bolted bonnet valves are available in a variety of body/bonnet materials and trims. General service recommendations for body/bonnet materials appear on page 32 and for trims on page 33. Specified materials should be compatible with the service.

Material Details

Part Name Material Option
Body ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Cover ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Disc @ ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Hinge ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Hinge Bracket ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Hinge Pin ASTM A 276 410 / A 276 304 / A 276 304L / A 276 316L
Seat Rings @ ASTM A 216 WCB / A 217 WC6 / A 217 WC9 / A 217 C5 / A 217 C12 / A 351 CF8 / A 351 CF8M / A 351 CF3 / A 351 CF3M / A 352 LCB
Disc Nut Carbon Steel / Stainless Steel
Washer Carbon Steel / Stainless Steel
Gasket Soft Iron / SS 304 / Graphoil
Gland Packing Graphite Asbestos / Graphoil / PTFE
Studs / Bolts ASTM A 193 Gr B7 / A 193 Gr B7M / A 193 Gr B8 / A 193 Gr B8M / A 320 Gr L7
Nut ASTM A 194 Gr 2H / A 194 Gr B7M / A 194 Gr B/ A 194 Gr 8M / A 194 Gr 4/7
* Valves are available in Duplex & Super Duplex Stainless Steel and Nickel Aluminium Bronze. Please indicate Trim required and ask for individual technical data sheets provided separately for these special materials. @ CS & Alloy Steel Wedges and Seat Rings will be overlayed with 13% CR. or STELLITE 6 as per customer specifications.