D941X electric flange soft seal butterfly valve is usually composed of a quarter-turn electric actuator (0~90° partial rotation) and a butterfly valve as a whole through mechanical connection, after installation and commissioning. The electric flange butterfly valve has a simple structure, small size and light weight, and is only composed of a few parts. When the electric flange butterfly valve is in the fully open position, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the pressure drop generated by the valve is small, so it has better flow control characteristics. The electric flange butterfly valve mainly has two structural forms: triple eccentric and single eccentric, and the sealing forms include metal seal, tetrafluoro seal and rubber seal.