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A check valve, non-return valve or one-way valve is a mechanical device, a valve, which normally allows fluid (liquid or gas) to flow through it in only one direction. 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.
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API Cast Steel Swing Check Valve
Pressure Seal Bonnet Swing Check Valve
Class 150~2500 Dual-plate Check Valve
Dual-Plate Check Valve
Cast Iron Globe Type Check Valve
Cast Iron Dual Plate Check Valve
Cast Steel Single Check Valve
JIS B2045 Swing Check Valve
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