Gate
valve is one of the most popularly and widely used valves for domestic
and industrial purposes. This valve is specifically used to obtain
uninterrupted flow of water. Used mostly in isolated applications, this
valve is greatly preferred because once the valve is in an open
position; there is complete drop in the pressure which is due to the
retraction of the gate into the bonnet.
According to specific
designs, this valve 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
utilises 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.
This
valve 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.

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