Pneumatic Actuated Ball Valves
Pneumatic actuated ball valves use compressed air to open and close a quarter-turn ball valve quickly and reliably. They are the standard automated on/off valve in process plants.
We supply complete assemblies with rack-and-pinion double-acting or spring-return actuators, NAMUR solenoid valves and limit switch boxes, on brass, stainless or carbon steel ball valves.
Specifications
| Product name | Pneumatic Actuated Ball Valve |
|---|---|
| Valve type / design | Rack-and-pinion actuator, double acting or spring return, on 2-way or 3-way ball valve |
| Body material | Valve: brass, SS304 / SS316 or carbon steel; actuator: anodized aluminium |
| Size range | ½" to 8" (DN15 – DN200) |
| Pressure rating | Valve up to PN40 / ASME Class 300; air supply 3 – 8 bar |
| End connections | Threaded BSP / NPT, socket weld, flanged |
| Standards | ISO 5211 mounting, NAMUR (VDI/VDE 3845) accessory interface |
| Applications | Process automation, chemical, water treatment and food |
Industrial uses
- Process automationFast on/off isolation controlled by PLC.
- Chemical plantsAutomated isolation with fail-safe closing.
- Water treatmentFilter, backwash and dosing valves.
- Food & beverageBatching and CIP routing.
- Oil & gasEmergency shutdown and isolation valves.
Frequently asked questions
Double acting or spring return?
A double-acting actuator uses air to open and to close, and stays put if air fails. A spring-return actuator uses air to move one way and a spring to return, so the valve fails safely open or closed.
What accessories are needed?
Usually a NAMUR solenoid valve to switch the air, a limit switch box for position feedback, and an air filter regulator.
What air pressure is required?
Most actuators are sized for 5 to 6 bar supply air. Actuator size depends on valve torque and available air pressure.