The switch of electric butterfly valve is controlled by power signal. The product can be used as shut-off valve, control valve and check valve of pipeline system. With manual control device, once the power failure, you can temporarily use manual operation, not affect the use.
Electric butterfly valve
1. Classification by structure
(1) Center seal
(2) Single eccentric seal electric butterfly valve.
(3) Double eccentric seal electric butterfly valve.
(4) Three eccentric sealing electric butterfly valve.
2. Classification according to sealing surface material
(1) The soft seal pair is composed of non-metallic soft material to non-metallic soft material. The sealing pair is composed of hard metal material and soft non-metal material.
(2) Metal hard seal electric butterfly valve. The sealing pair is composed of metal hard material to metal hard material.
3. Classification according to sealing form
(1) Forced seal: elastic seal electric butterfly valve. The sealing specific pressure is produced by the elasticity of the valve seat or valve plate when the valve plate extrudes the valve seat when the electric valve is closed. Applied torque seal electric butterfly valve, sealing pressure is generated by the torque applied on the valve shaft.
(2) Pressure sealing electric butterfly valve: the sealing pressure is generated by the pressure charging of the elastic sealing element on the valve seat or valve plate.
(3) Automatic sealing electric butterfly valve: the sealing pressure is automatically generated by the medium pressure.