According to the structure, According to the structural form of butterfly valves, butterfly valves can be divided into three types:
① Center line butterfly valve (soft seal)
② Double eccentric butterfly valve (soft seal or hard seal)
③ Triple eccentric butterfly valve (hard seal)
The structural principle of butterfly valve is especially suitable for making large diameter valves.
Butterfly valves are not only widely used in petroleum, gas, chemical industry, water treatment and other industries, but also used in the cooling water system of thermal power stations.
Butterfly valve is suitable for regulating medium flow. It has a simple structure, small size and light weight, and consists of only a few parts.
Butterfly valves have two sealing forms: elastic (rubber) seal and metal seal. Elastic sealing valve, the rubber sealing ring can be inlaid, and it can be opened and closed quickly by just rotating 90°, which is simple to operate. At the same time, the valve has good fluid control characteristics.
