Features

1), triple eccentric structure, the butterfly plate and the valve seat contact or disengage instantly, basically zero wear; 2), because all refractory materials are used, it has reliable fire resistance; 3) The valve has a self-locking function. When the butterfly plate is closed to the sealing position, it will realize self-locking immediately, and there will be no failure of the butterfly plate being closed too far; 4) The butterfly plate has a streamlined design, small flow resistance, good hydraulic characteristics, and the flow characteristics are similar to inclined straight lines, and the energy saving effect is good; 5) The medium can be closed and cut off, and the flow of the medium can also be adjusted arbitrarily. 6) The valve plate and valve body sealing surface are sealed with stainless steel, and the stainless steel valve seat material has good scratch resistance, cavitation resistance and hardness stability, which greatly improves the service life of the valve 7) The large size valve stem adopts copper alloy rolling ball bearing, which prevents corrosion between the valve stem and the bearing, and at the same time reduces the operating torque of the valve, and the user can control it easily and freely 8) The material of the valve stem bushing is made of copper alloy, which not only ensures the position of the valve stem, but also avoids the situation of locking between the valve stem and the bushing due to corrosion, and reduces the operating torque of the valve stem. 9) The actuator adopts a worm gear reducer, which is easy to operate and labor-saving.