Gate Valves -Some Most Important Varieties

A gate valve is basically a controlling device that is fixed on the pipe. It includes a round handle on the thick part of the pipe. It helps to stop or start the linear flow of water or other types of liquids.

Industrial gate valves are usually seen in commercial buildings, factories, and even homes. It is used for a wide variety of liquids and semi-liquids like quite efficient in its sealing properties.

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Valve- gate Classification According Wedges

Different valves using different types of wedges and each valve differentiated accordingly. The following sections describe some important classifications.

Flexible wedge valve: These valves include a one-piece and a twin-piece disc to change the angle between the seats. The wedge valve is quite flexible and can be found in different varieties. 

Solid wedge valves: Gate valve with a solid wedge can be used for all kinds of liquids. It is suitable for strong turbulent flow with a simple construction. 

Wedge valve divisions: These wedges are used mostly for corrosive liquids and non-condensing gases. This wedge type including two pieces is positioned between the tapered seat in the valve body.

Gate valves are also classified according to the type of rod. The stem is a device that connects the disk and the valve handwheels. According to the valve stem is classified as follows:

  • The rising valve stem and non-rising stem valve

Rose stem valve: Special rod valve includes a threaded shaft that can be rotated using a handwheel. Sem rises when the valve is opened, helping to identify the position of the valve. When the gate valve is closed, the rod down.

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