Wafer type pneumatic butterfly valve

Wafer type pneumatic butterfly valve Standard technical parameters

Valve body
Nominal diameter: DN40-DN1000
Body material: Ductile iron, 304, 316
Connection method: wafer type, flange type, lug wafer type
Pressure level: PN1.0MPa, PN1.6MPa
Structure form: midline structure

In-valve components
Seat seal: EPDM: -30 ℃ ~ 120 ℃
NBR: -30 ℃ ~ 80 ℃
PTFE: -30 ℃ ~ 140 ℃
VITON: -30 ℃ ~ 150 ℃

Valve plate material: Ductile iron nickel plated, nylon coating, aluminum bronze, 304, 316, 316L, 1.4529, 2507
Stem material: stainless steel 410, 304

Applicable medium: water, liquid, gas, oil, powder, steam, acid and alkali corrosive medium.

Wafer type pneumatic butterfly valve Design and manufacturing standards
Design and manufacture: GB / T12238-2008
Connection standard: JB / T 79.1-1994
Structure length: GB / T12221-2005
Pressure test: GB / T13927-2008

Pneumatic actuators
Double-acting: Ventilation on, ventilation off
Single-acting gas-opening type: ventilation open, air cut-off, gas source failure closed
Single-acting gas-closed type: ventilation closed, air cut-off open, gas source fault open
Optional accessories: Reversing solenoid valve, limit switch, air filter pressure reducing valve, electric positioner, handwheel mechanism, position retaining valve

Electrical part can choose explosion-proof

Wafer type pneumatic butterfly valve Working principle
Sanitary valves can be driven by electric or pneumatic actuator, with signal to automatic control the valve open and close. The actuators rotate the discs freely within 90° to open or close or regulate the flow of the medium.

Wafer type pneumatic butterfly valve Leakage Class
Soft sealing butterfly valve: Zero leakage
Metal hard seal concentric butterfly valve: 1% leakage
Metal hard seal double/triple eccentric butterfly valve: Zero leakage