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FORGED STEEL CHECK VALVE
Threaded steel check valves are used to prevent backflow in pipelines. Flow occurs in a straight line through the valve when the output pressure decreases (pressure differential). The disc then moves to the open position, allowing flow through the line. When the input pressure is lower than the output pressure, the valve disc closes, preventing flow. Check valves can be installed horizontally or vertically along the pipeline system, but must be installed according to the flow direction indicated by the arrow markings on the body.
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Design and Manufacturing Standards: API 602 / ASME B16.34
Face-to-face dimension standard: ASME B16.10
Socket weld connection standard: ASME B16.11
Threaded connection standard: ASME B1.20.1
Butt weld connection standard: ASME B16.25
Flanged connection standard: ASME B16.5
Testing standard: API 598
Body Material: Carbon Steel / Stainless Steel / Alloy Steel
(Forged steel grades such as A105N, LF2, F304, F316, F11, F51, F91, F347, etc.)
Trim Material: API 600 Trim numbers 1 to 17
End Connections: Flange / Socket Weld (SW) / Threaded / Butt Weld (BW)
Pressure Rating: Class 150, 300, 600, 800, 900, 1500, 2500
Size Range: 1/2" (DN15) to 2" (DN50)
Applications: Widely used in petroleum, natural gas, fertilizer, paint industry, and more.
