Check Valve

Dervos provides high performance check valve products, including Swing check valve, Lifting check valve, Titling check valve, External check valve, Wafer check valve etc.
Check valve, non-return valve or one-way valve is a kind of mechanical device and 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.