Check Valve

Swing Check
Wafer  Valve
Ball Valve
Disc Valve
Dual Plate Valve

Check valves are one-way or nonreturn valves that open with fluid movement and pressure, and close to prevent backflow of the pressure to upstream equipment such as pumps and compressors. In fact, check valves allow the fluid to flow in only one direction.

The most common tactic for an inline check valve is to prevent the backwards transmission of pressure, rather than flow, and it's pressure that creates flow anyway. An example of this tactic is the check valve typically installed after a pump in a system which employs an accumulator

Different types of commonly used check valves are swing check valve, wafer check valves ,ball check valves , nonslam axial check valve (Disc Check Valve ) , dual plate check valves.

Specification(s)

Size ½” To 24” ½” To 20” ½” To 12” ½” To 12” ½” To 8” ½” To 8”
ANSI Class 150 300 600 900 1500 2500
TEST PRESSURE BODY(KG/CM2) 32 79 156 236 392 652
TEST PRESSURE SEAT (KG/CM2) 22 57 115 172 287 477
MATERIAL OF CONS. A216GR. WCB, WC5 WC6, WC9 LCB, CF8, CF8M, CF3 CF3M, C.I
DESIGN STANDARDS API 600, BS 1414, ANSI B 16.34, ANSI 16.10, ANSI B16.25
TESTING STANDARDS API 598
END CONNECTION FLANGED AND BUTTWELD