Pneumatic butterfly valves characteristics
Pneumatic butterfly valves is valve plate around perpendicular to the channel fixed shaft rotary valve, is by the piston double action or single action (spring reset type) pneumatic actuators and butterfly valve composition, the rotating high-performance type adjustment or cut off valve class, match pneumatic butterfly valves main do block valves use, can also design into a regulation or period of valve and control function, the butterfly valves in the low pressure big caliber pipeline use more and more.

Pneumatic butterfly valves simple structure, small volume light weight, low cost, pneumatic butterfly valves installed in high altitude postern, after two five electromagnetic valve control operation is convenient, also can adjust flow medium. This is especially significant characteristics. Fluid resistance is small, large caliber pneumatic butterfly valves open when effective circulation area is larger, opening and closing quickly and cost, dish switch rotating 90 Angle can complete opening and closing, due to the shaft on both sides of the dish plate hand medium force close to equal, and produce torque in opposite directions, thus open-close torque is small, low pressure can be realized under good sealing, pneumatic butterfly valves seal material with acrylonitrile butadiene rubber, fluorine rubber, edible rubber, lining four fluorine the seal performance is good, including hard seal butterfly valves for soft hard cascading sheet metal, with metal hard seal and elastic seal heavy advantage, no matter in low temperature circumstances are excellent seal performance.