What is a butterfly valve


Release time:

2020-02-25

Butterfly valve is a simple structure of the regulating valve, but also can be used for low pressure large diameter regulation.

Butterfly valve is a simple structure of the regulating valve, but also can be used for low pressure large diameter regulation.

Butterfly valve can be used to control air, water, steam, all kinds of corrosive media, mud, oil and other media.

1. Characteristics:

1) Small size, light weight, flexible and convenient operation;

2) Simple and compact structure, good sealing performance, convenient manufacturing and maintenance;

3) Wide range of application, small diameter to a few millimeters, large to a few meters.

2. Working principle:

Butterfly valve opening and closing part is a disc shaped butterfly plate (composed of two symmetrical disks). A pin shaft perpendicular to the shaft line and integrated with the plate is installed on each side of the plate base plate. The opening and closing action is realized by rotating the hand wheel or handle to make the moving ring turn inward and drive the disc seat to rotate together.

3. Application field:

It is suitable for the occasions where the pressure is not high and the flow is large in the petroleum industry. It is also suitable for cutting off the gas pipeline and water channel in the chemical plant. Also suitable for high temperature and high pressure power station pipeline system; In addition, it can also be used as a valve in metallurgical machinery, food and medicine, water supply and drainage and municipal construction departments.