Pneumatic Actuated Butterfly Valves
Pneumatic actuated butterfly valves provide fast, automated quarter-turn isolation on medium and large-diameter lines, with fail-safe spring return where needed.
We supply wafer and lug butterfly valves with ductile iron, cast steel or stainless bodies, fitted with rack-and-pinion actuators, solenoid valves and limit switches.
Specifications
| Product name | Pneumatic Actuated Butterfly Valve |
|---|---|
| Valve type / design | Rack-and-pinion actuator, double acting or spring return, on wafer or lug butterfly valve |
| Body material | Valve: ductile iron, cast steel or SS body; SS or ductile iron disc; EPDM / NBR / PTFE seat |
| Size range | 2" to 24" (DN50 – DN600) |
| Pressure rating | Valve PN10 / PN16 / Class 150; air supply 3 – 8 bar |
| End connections | Wafer, lug, double flanged |
| Standards | ISO 5211 mounting, NAMUR interface, BS EN 593 / API 609 valve |
| Applications | Water, HVAC, process, bulk handling and food |
Industrial uses
- Water & wastewaterAutomated isolation in treatment plants.
- Process plantsFast on/off isolation with fail-safe action.
- Food & beverageAutomated product and utility routing.
- Cooling waterAutomated isolation on cooling circuits.
- Powder & bulk handlingIsolation on silo and conveying lines.
Frequently asked questions
Can it modulate flow?
Yes, with a positioner that controls the actuator from a 4–20 mA signal.
How fast does it operate?
Pneumatic actuators typically stroke in one to a few seconds depending on size, faster than most electric actuators.
What does fail-safe mean?
With a spring-return actuator, the spring drives the valve to a set position (open or closed) if air or power is lost.