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What is ON/OFF Valve ?

 An ON/OFF Valve is the fluid equivalent of an electrical switch, a device that either allows unimpeded flow or acts to prevent flow altogether.


These valves are often used for routing process fluid to different locations, starting and stopping batch processes, and engaging automated safety (shutdown) functions.


What is ON/OFF Valve ?

Valve styles commonly used for on/off service include ball, plug, butterfly (or disk), gate, and globe.

Large on/off valves are generally of such a design that the full-open position provides a nearly unimpeded path for fluid to travel through. Ball, plug, and gate valves provide just this characteristic:


A plug valve is very much like a ball valve, the difference being the shape of the rotating element. Rather than a spherical ball, the plug valve uses a truncated cone as the rotary element, a slot cut through the cone serving as the passageway for fluid.

The conical shape of a plug valve’s rotating element allows it to wedge tightly into the “closed” (shut) position for exceptional sealing.



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  1. oshwinJanuary 10, 2021 at 11:29 PM

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