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.
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.

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