The Purpose of Gate Valve, Globe Valve, Butterfly Valve

1. What occasions are gate valves, globe valves and butterfly valves suitable for?

These three kinds of valves are arranged according to the difficulty of switching: globe valve, gate valve, butterfly valve;

Arranged by resistance: globe valve, butterfly valve, gate valve;

Strictly arranged by closing: globe valve, butterfly valve, gate valve;

Sort by price: globe valve, butterfly valve, gate valve; (except special butterfly valve)

These three kinds of valves are all driven valves. According to the above characteristics, it is not difficult to see that the globe valve is mainly used for opening and closing and flow adjustment of small diameter pipes (branch pipes) or the end of the pipeline; butterfly valves are used for opening and closing and flow adjustment of branch and main pipes. ; The gate valve is used for the opening and closing of the main pipe and is generally not used for flow adjustment.

Butterfly valve

The butterfly plate of the butterfly valve is installed in the diameter direction of the pipeline. In the cylindrical passage of the butterfly valve body, the disc-shaped butterfly plate rotates around the axis, and the rotation angle is between 0° and 90°. When the rotation reaches 90°, the valve is fully opened.

The butterfly valve is simple in structure, small in size and light in weight, and consists of only a few parts. Moreover, it can be opened and closed quickly by rotating 90°, and the operation is simple. At the same time, the valve has good fluid control characteristics.

When the butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop produced by the valve is small, so it has better flow control characteristics. The butterfly valve has two sealing types: elastic seal and metal seal. Elastic sealing valve, the sealing ring can be inlaid on the valve body or attached to the periphery of the butterfly plate.

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