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. Check valves work automatically and most are not controlled by a person or any external control; accordingly, most do not have any valve handle or stem. An important concept in check valves is the cracking pressure which is the minimum upstream pressure at which the valve will operate. Typically the check valve is designed for and can therefore be specified for a specific cracking pressure.
Size: DN8-DN50, 1 / 2 "-2"
Material: CF8/304, CF8M/316
Nominal pressure: PN1.6, 2.5,4.0,6.4 MPa
Strength test pressure: PN2.4, 3.8,6.0,9.6 MPa
High-pressure Sealing test pressure: 1.8,2.8,4.4,7.1 MPa
Medium: H1 H-(16-64) C water, oil, gas
Temperature: -40 ~ 180 ℃
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