check valve
According to the using requirement , disc can be made from metal , metal embed in rubber insert or rubber ring .
Just like globe valve
,lift check valve have narrow channel ,so pressure of fluid in lift check valve is bigger than swing check valve . swing check valve have
fewer restrictions in flow rate.
Check valve with different materials can be used in pipe with various medium. Check valve become one
of fluid parts of the complete pipeline when check valve is installed. The state of valve will be influenced by transient flow state of
system it work .while, state of valve can affect transient flow state of system.
Check valve is also called reflux valve , inverted
valve , counterbalance valve , non return valve, this kind of valve open and close by power caused by fluid in pipeline .usually these
valve work automatically. Welding lift angle check valves in pipe system is used to prevent backflow of medium and rollback of pump and
bleed of medium in vessel. It also used in pipe which provide supplies to supporting system.
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