Gate Valves are used in various industries to check the flow of fluid. This valve is also called the sluice valve. These valves contain rectangular or round gate or wedge. When the gate or wedge is lifted the valve allows fluid to pass through it. The gate might have two planer surfaces or it can be of wedge shaped. Most of these valves are used to fully block the flow or to allow free flow. There are various valves which are used to modify the speed of the flowing fluid.
Types
Gate Valves can be a rising stem or a non-rising stem type. In the rising stem type there is a round handle which rotates a shaft. This shaft is threaded and is attached to the center of the valve. The shaft generally rises when the handle is turned and it opens the valve. Simply by looking at the stem one can determine whether the valve is open or closed.
There are places where these types of valves cannot be used. In such situation one can use non rising stem valves. Most of the underground pipe system has this type of valve. Moving the handle to the left side opens the valve and when the handle is moved to right side it closes the valve.
Choosing
Before choosing these valves one should properly plan about how and where to use them. One type of valve might suit industrial setting while other type can be suitable for home piping system. Proper information about the designs and working principle of these valves will be helpful while purchasing them. There are several manufacturing and distributing companies whom one can contact to know more about these valves. A professional advice might help to choose the proper type of valve.
Gate Valves can be made from stainless steel, nickel, aluminum and bronze. There are special types of valves which are also available and these include cryogenic, bellow sealed and jacketed type of valves. There are various websites from where one can get information about these valves and can also purchase these.
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