Explain The Following Valves Shell And Seat Testing?

Explain The Following Valves Shell And Seat Testing?
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1 Answer

Answer :

 Ball Valve
 Gate Valve
 Globe Valve
 Butterfly valve
 Plug valve
Shell Test of above valves:-
Testing flange to be fixed on both sides. Pressurized one side under the valve partial open condition as per the standard. Check the leakage through body, Bonnet sealing area, Gland packing area.

Seat Test of above valves:-
Testing flange to be fix on one side of the valve. Pressurized the valve under fully closed condition as per the standard. Check the leakage through Seat in opposite side. Follow the same procedure while checking the another seat except Globe and Butterfly.
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