Water faucets are very common in our daily life, I suppose. They are
generally used to shut off the water by lifting and dropping the
wedge. In fact, water faucet is the most common type of gate valves.
Frankly speaking, gate valves hold the basic and common feature, which
refers to the convenient and immediate flow regulating. Although they
are made in various sizes, shapes, means of actuation, materials and
other specifications, they occupy some main parts.Firstly,
it is the valve handle and the valve stem. These two fittings are
aimed to drive the mechanism. They can be classified into two main
classifications, which is the type of rising stem and the type of
non-ring stem. The valve handle is designed to attach the valve stem in
order the rotate the functioning fitting.
Secondly, it is the featured part called the disc and seat.
Generally speaking, these two parts cooperate to control the relative
flow. When the gate valve disc is driven out from the valve

seat, the flow
would be allowed to go. And when the valve disc is driven to be contact
tightly with the valve seat, the passing flow would be totally
prevented from going through. In order to meet various specifications,
these two parts are also available to be designed and manufactured in a
wide range of shapes. The most common type is the V-shape.
Besides, body and valve bonnet are also indispensable. Actually, they
are all the outer parts of a gate valve. Generally speaking, the valve
body is used to connect the valve to the required pipelines. And the
valve bonnet is used to contain the valve disc. Such two parts aim to
provide a safe working condition for a gate valve. Both can be made of
metal or plastic.

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