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Pneumatic regulating wafer butterfly valve is composed of pneumatic actuators and soft seal pinch butterfly valve, valve positioner, control system output control signal 4-20mA, valve positioner receives 4-20MA signal to control the size of the valve opening, to achieve the medium flow, pressure conditioning.Pneumatic clamping butterfly valve is the middle line soft seal butterfly valve is the preferred choice of conventional butterfly valve pipeline, with simple structure, small flow resistance coefficient, flow characteristics tend to be straight line, will not stay sundry.It has the advantages of light weight, convenient installation and small driving torque.Pneumatic butterfly valve can be used to cut off the medium, but also for the flow of conditioning medium.Select different materials of the parts, with different materials of the sealing ring, can adapt to different media, working conditions.Applicable to the temperature ≤120℃ or ≤150℃, nominal pressure ≤ 1.6mpa water supply and drainage, sewage, food, heating, gas, vessel, hydropower, metallurgy, power system and light textile industries.

Product model: D671X/F/H
Nominal diameter: DN40-DN1000
Material of valve body: ductile iron, 304, 316
Connection: clamping, flanged, lug clamping
Pressure classes: PN1.0mpa, PN1.6mpa
Seat sealing: EPDM: -30℃ ~ 120℃ NBR: -30℃ ~ 80℃ PTFE: -30℃ ~ 140℃ VITON: -30℃ ~ 150℃
Valve plate quality: ductile iron nickel plating, nylon coating, aluminum bronze, 304, 316, 316L, 1.4529, 2507
Stem material: stainless steel 410, 304
Suitable medium: water, liquid, gas, oil, powder, steam, caustic medium.