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     Small volume, light in weight, easy disassembly, assembly and maintenance, can be installed in any position.2. The structure is simple, compact structure, low in torque, rotate 90 ¡ã.Flow curve tending to straight line, good regulation performance.4. The butterfly plate without pin structure is used to connect with the valve stem.5. The butterfly plate adopts the cylindrical spherical shape, improves the sealing performance, prolong the service life of the valve, the pressureKeep zero leakage under more than 50000 times.6 The sealing can be replaced and sealing of two-way is reliable. 7. According to user requirements, spraying butterfly plate, such as nylon or poly 4 gas ethylene.8. The valve can be designed for flange and clamp connection.9. You can choose manual, electric or pneumatic drive mode. Flange butterfly valve is suitable for the temperature < 120 ¡æ or 150 ¡æ,Nominal pressure < 1.6 MPa water supply and drainage, sewage, food, heating, gas, shipPersons, water and electricity, metallurgy, energy systems, textile and other industries. Especially suitable for two-way sealing and body corrosion.