Spec Sheet: Compact Wafer-Silent Check Valve
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Check valve shall be of the silent wafer type and the same size as the entering pipe.
Valves shall be the compact wafer style and have a pressure and temperature rating equal to or greater than the pipeline in which they are installed.
Compact wafer-silent style check valves thru 12 inches shall be rated for 250PSI WOG for installation between ANSI Class 125 or Class 250 flanges, have a Ductile Iron body (ASTM A-536 65-45-12), ASTM A313, Type 304 Stainless Steel helical or conical spring, a Stainless Steel guide bushing and type 304 Stainless Steel guide pins.
Valves are to operate silently in either vertical or horizontal positions, flow up or down.
Compact wafer-silent check valve shall be Pratt Series 720A as manufactured by Henry Pratt Company.