The pneumatic flange butterfly valve consists of an angle-stroke pneumatic piston actuator and a flange butterfly valve. Different media can choose suitable materials to ensure that the sealing, corrosion resistance, high temperature resistance and wear resistance of butterfly valves are more prominent. The butterfly valve with flange connection method is easy to install and disassemble, and more convenient to maintain. When fully opened, the thickness of the butterfly plate is the only resistance when the medium flows through the valve body, so the fluid resistance is very small. Mainly used for pure pipeline and industrial environmental protection, water treatment water supply and drainage pipeline for opening and closing or regulation of medium flow.

Nominal diameter: DN50~800mm

Connection: flange

Actuator configuration: AT, GT, AW type

Cylinder form: Double action, Single action(spring reset)

Control mode: switching type, regulating type, three-stage type(optional opening)

Nominal pressure: 16, 25, 40 bar (olease specify higher pressure when odering)

Gas source pressure: 4~7 bar

Medium temperature: W1:-40~180℃、W3：-30~425℃、W4：-40~425℃

Ambient temperature: Standard: -20~80℃

Valve body material: Carbon steel(C), Stainless steel(P4, P6)

Seal material: butadiene rubber ( X ), polytetrafluoroethylene ( F ), metal hard seal ( H ), hard alloy ( Y )