Types Of Valves And Their functions .
General purpose valves
Gate valve
Globe valve
Plug valve
Ball valve
Butterfly valve
Diaphragm valve
Pinch valve
Slide valve

Check valves
Swing valve
Titling valve
Lift valve
Spring loaded valve

Special service valves
Pressure relief valve
Control valves

FUNCTIONS of valves
 On-off service
 Throttling service
 Prevention of reverse flow
 Pressure control
 Special functions
 Directional flow control
 Sampling service
 Limiting flows
 Sealing vessels or tank outlet nozzles

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