Chongqing butterfly valve, butterfly valve manufacturer, price; in which to buy, how much money? A: Chongqing butterfly exhibition kun pipe distributor, agents of various compensators, flanges, waterproof casing, valves, fittings. 24 hours Toll Free: 15123295084 (Li) Official Website: www.zhankunguandao.com Chongqing butterfly flap valve is also called, is a simple structure of the control valve, but also can be used for low pressure pipeline medium switch control. Use of butterfly valves for furnace, gas, natural gas, LPG, city gas, hot and cold air, chemical refining and power generation and environmental protection engineering systems transport all kinds of corrosive and non-corrosive fluid medium pipe, used to adjust and cut off the flow of media. Classification of a butterfly. Classified according to structure (1) Center sealing butterfly valve (2) single eccentric sealing butterfly valve (3) double eccentric butterfly valve seal (4) three eccentric butterfly valve seals 2 According to the sealing surface material classification (1) soft seal butterfly: Sealing of non-metallic materials, non-metallic soft soft material. (2) sealing the metal hard material a soft non-metallic material. (3) metal seal butterfly valve. Sealing hard materials from metal to metal hard material. 3. Seal type classification according to (a) Mandatory sealing butterfly valve (1) elastic sealing butterfly valve. Sealing pressure when the valve is closed by the valve plate extrusion seats, seat or valve plate resiliency. (2) applied torque seal butterfly valve. Sealing pressure applied to the valve shaft by the torque generation. (2) filling pressure sealing butterfly valve. Sealing pressure from the valve seat or valve plate sealing element pressurized bomb pieces produced. (3) self-sealing valve. Sealing pressure than the pressure generated automatically by the media. 5. By Operating Temperature Classification (1) high temperature butterfly valve. t> 450 C of the butterfly valve (2) in the temperature butterfly valve. 120 C