Butterfly valve is usually used in low-pressure pipeline opening and closing, butterfly valve opening and closing parts for the butterfly plate (circular), driven by 90° rotation of the valve stem to achieve the function of opening and closing, the diameter size can be customized according to customer needs, we currently do the maximum diameter of DN5000(250 “). When the butterfly plate of the butterfly valve is fully open at 90°, the thickness of the butterfly valve is the only resistance when the fluid passes through the valve, so the resistance and pressure are relatively small. The defect is that it is not suitable for media through high pressure. The structure of butterfly valve is characterized by small diameter, thin thickness and light weight. Compared with other valve price advantages, can be divided into concentric butterfly valve, eccentric butterfly valve, double convection butterfly valve, high performance butterfly valve.
Butterfly valve is a kind of valve with compact structure, easy installation and wide application range. It can be widely used in petrochemical, coal gas, natural gas, metallurgy, electric power, papermaking and other industries, and also plays an important role in water treatment, environmental protection and other fields.