A check valve, clack valve, non-return valve, reflux valve, retention valve or one-way valve is a valve that normally allows fluid (liquid or gas) to flow through it in only one direction. Check valves are two-port valves, meaning they have two openings in the body, one for fluid to enter and the other for fluid to leave.
Cast Carbon Steel Swing Type Check Valve, Bolted Cover, Flanged End to ANSI 150, Body, Cover, Disc, Bracket and Lever as per ASTM A 216 Gr. WCB, 13% Cr. Steel Working Parts, AISI 410 Hinge Pin, High tensile Studs and Nuts, Spiral Wound S.S. 304 Graphoil Filled Gasket, Valve as per BS 1868 and Tested to API 598.
Forged Carbon Steel Lift Type check Valve, Bolted Cover, Socket Weld / Screwed End, Class – 800/300, Body & Cover as per ASTM A 105. 13% Cr. St. Working Parts, S.S. Spring, High tensile Studs and Nuts, Spiral Wound S.S. 304 Graphoil Filled Gasket.