Detailed introduction of pneumatic butterfly valve and floating butterfly valve
Use of butterfly valve Direct through butterfly valve is widely used for cutting off media. Multi way butterfly valve can change the medium flow direction or distribution direction. Butterfly valves have been widely used in long-distance pipelines. The flow direction of butterfly valve is unrestricted. Butterfly valves have a wide range of pressure and diameter, but the operating temperature is limited by the sealing ring material.
① According to the valve body channel type, butterfly valves can be divided into straight butterfly valves, three-way butterfly valves and four-way butterfly valves. There are four types of valve body structure: integral type, two-piece type, three piece type and bisection type. Integral body is usually used for larger butterfly valves. Two piece and three piece valve bodies are suitable for medium and large diameter butterfly valves. Diverter valve body is mainly used for hard sealing butterfly valve in coal chemical industry.
② The ball is the opening and closing part of the butterfly valve, and the sealing surface is the surface of the ball. The surface roughness precision of the ball is very high. Through the butterfly valve, the passage on the ball is straight; The three-way butterfly valve has three types of fairways: L-shaped, T-shaped and Y-shaped, and its distribution form is the same as that of the plug valve. According to the pneumatic mode of the ball in the valve, the butterfly valve can be divided into floating butterfly valve and pneumatic butterfly valve.
