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Wednesday, August 22, 2012

Functions and Uses of Gate Valve



It is one of the most popularly and widely used it for domestic and industrial purposes. It is specifically used to obtain uninterrupted flow of water. Used mostly in isolated applications, there is complete drop in the pressure which is due to the retraction of the gate into the bonnet.
According to specific designs, it is divided into different categories. The most commonly used valves include the flexible wedge and the solid wedge gate valve. There are different types of flexible wedge valves which utilizes twin disc parts which are flexible. The parallel side valve is one of the most commonly and widely used flexible wedge valve. These valves are prominently used in stem systems as it can withstand expansion and contraction under varying climatic conditions.

It is usually functions between open and closed functions. The pressure in the pipes drops to a minimal level when the valves are opened. These valves are typically used as the initial valves in any plumbing section. However, the valves cannot be used to control the flow of water in a linear style. It either operates to fully open or fully close the flow.

A partially open gate valve can cause vibrations and permanent damage to pipes. The seating part of the valves can also be damaged by the fluid friction if the valves are partially opened. In these valves, the design is specifically aimed at completely blocking the flow or completely allowing the flow of water.

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