Product overview: the main advantages of pneumatic butterfly valve, simple structure, small volume and light weight, low cost, pneumatic butterfly valve this feature is particularly significant, installed in the high altitude tunnel, through the two position five way solenoid valve control operation convenient, also can adjust the flow medium. The flow resistance is small, the effective flow area is large when the medium and large-diameter pneumatic butterfly valve is fully open, the opening and closing are fast and labor-saving, and the opening and closing can be completed when the butterfly plate rotates 90 degrees. Because the force of the butterfly plate hand medium on both sides of the rotating shaft is nearly equal, the torque direction generated is opposite, so the opening and closing torque is small, and good sealing can be realized under low pressure. The sealing materials of butterfly valve are nitrile rubber and fluororubber, The sealing performance of the edible rubber is good because it is lined with tetrafluorone. The hard sealing screw valve is soft and hard laminated, which has the important advantages of metal hard sealing and elastic sealing. It has excellent sealing performance no matter at low temperature.

Electric butterfly valve is a kind of non airtight butterfly valve, which is widely used in dry building materials, metallurgy, mining, electric power and other production processes. The medium temperature is ≤ 300 ℃ and the nominal pressure is 0.1MPa. It is used for connecting, opening and closing or regulating the medium quality.