Butterfly valve is a type of regulating valve with a simple structure, which can also be used for regulating low pressure and large diameter.

Butterfly valves can be used to control air, water, steam, various corrosive media, mud, oil and other media.

1. Features:
1) Small size, light weight, flexible and convenient operation;
2) Simple and compact structure, good sealing performance, convenient manufacturing and maintenance;
3) Widely applicable, with diameters ranging from a few millimeters to several meters.

2. Working principle:
The butterfly valve opening and closing component is a disc shaped butterfly plate (composed of two symmetrical discs). Install a pin shaft on each side of the bottom plate of the disc-shaped seat that is perpendicular to the axis and integrated with the disc-shaped seat. Rotate the handwheel or handle to rotate the moving ring inward and drive the disc seat to rotate together to achieve the opening and closing action.

3. Application field:
Suitable for situations in the petroleum industry that require low pressure but high flow rate; It is also suitable for cutting off general industrial pipelines such as gas pipelines and waterways in chemical plants; Also suitable for pipeline systems in high-temperature and high-pressure power plants; In addition, it can also be used as a valve in departments such as metallurgical machinery, food and medicine, water supply and drainage, and municipal construction.