Features Flange butterfly valve main features are: 1, compact and lightweight, easy disassembly and maintenance, and can be installed in any location. 2, the structure is simple, compact, small operating torque, 90 ° turn quickly open. 3, the flow characteristics of the trend line, adjust the performance. 4, butterfly plate and valve rod connection pinless structure, to overcome the possible internal leakage point. 5, the use of spherical disc butterfly shape, improve the sealing performance and extend the service life of the valve, open more than 50,000 times the pressure remains zero leakage. 6, seals can be replaced, and sealed to achieve two-way seal. 7, butterfly board can be sprayed coating according to user requirements, such as nylon or PTFE. 8, the valve can be designed to flange connection and the folder connection. 9, drive mode can choose manual, electric or pneumatic. Electric flange butterfly valve for temperature ≤ 120 ℃ or ≤ 150 ℃, nominal pressure ≤ 1.6MPa for drainage, sewage, food, heating, gas, shipping, hydropower, metallurgy, energy systems and textile industries, especially for two-way seal And valve easy to rust occasions, for regulating flow and interception media. Valves with metal seals generally have a longer life than elastomeric valves, but are harder to seal completely. Metal seals can adapt to higher operating temperatures, while flexible seals have temperature-limited defects. Electric flange butterfly valve usually by the angular travel of the electric actuator (0 ~ 90 ° part of the rotation) and the electric flanged butterfly valve overall through the mechanical connection, after installation and commissioning together. Electric butterfly flange butterfly valve mounted on the diameter of the pipe. In the electric butterfly valve body cylindrical channel, the disc-shaped disc rotates about the axis, the rotation angle is between 0 ° ~ 90 °, when rotated to 90 °, the valve is fully open state. Electric flange butterfly valve structure is simple, small size, light weight, only a few components. And just turn 90 ° to quickly open and close, easy to operate, while the valve has good fluid control features. Flange butterfly valve is fully open position, the thickness of the disc is the only medium resistance through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics. Butterfly valve seal and metal seal two types of seal. Flexible sealing valves, seals can be embedded in the body or attached to the butterfly plate around. Valves with metal seals generally have a longer life than elastomeric valves, but are harder to seal completely. Metal seals can adapt to higher operating temperatures, while flexible seals have temperature-limited defects. If the butterfly valve is required to be used as a flow control, the main choice is the correct size and type of valve. Structural principle of electric flanged butterfly valve is especially suitable for making large diameter valve. Shanghai Enang Valve Co., Ltd. butterfly valve not only in the oil, gas, chemicals, water treatment and other general industry has been widely used, but also used in thermal power station cooling water system. Commonly used electric flange butterfly valve butterfly valve and butterfly valve flange two. The butterfly valve on the folder is to use double-headed bolts to connect the valve between the two pipe flanges, flanged butterfly valve is equipped with a flange on the valve, with bolts on both sides of the valve flange connected to the pipe flange. In the fully open position, the thickness of the disc is the only resistance the media travels through the valve body, so the pressure drop across the valve is small and therefore has better flow control characteristics. Electric flange butterfly valve seal and metal seal two types of seal. Flexible sealing valves, seals can be embedded in the body or attached to the butterfly plate around. Valves with metal seals generally have a longer life than elastomeric valves, but are harder to seal completely. Metal seals can adapt to higher operating temperatures, while flexible seals have temperature-limited defects.