What is the Function of a Gate Valve?

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Piping systems are used to channel fluids from one system to another. The flow of this fluid must be controlled for the piping system to direct the fluid efficiently to its destination. A gate valve can be used for this function.

Definition

  • A gate valve, also referred to as a sluice valve, is a valve that opens and closes to regulate fluid flow. A gate valve opens by lifting a rectangular or round gate or wedge, often called a sliding door, out of the fluid’s path to allow it to flow though.

Function

  • Gate valves are used in straight-flow fluid systems where a minimum amount of friction is required. Unlike other valves, gate valves are constructed to be used either completely open or closed. If partially open, the fluid velocity can damage the gate valve’s seal and cause leakage.

Stems

  • Gate valves contain either a non-rising or rising stem. Rising stems are used as a visual indication of the valve position and lift when a valve is open. Non-rising stems are used for underground gate valves or when vertical space is constricted.

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References

  • Photo Credit Equipment, cables and piping as found inside of a modern industr image by Andrei Merkulov from Fotolia.com
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