Pneumatic actuators in aluminium CH-air ‘A’


Usually ships from stock


Pneumatic valve actuator, quarter turn
Brand: CH-air A Type
Rack and pinion design
Blow-out proof pinion
Housing: Extruded aluminium, hard anodised, PTFE? coated, or ENP coated
Ends: Cast aluminium
Pinion: ENP steel
Pistons: Cast aluminium
Seals: NBR


Driven by dry, filtered compressed air
Min/ max air pressure: 2bar/ 8bar
Min/ max working temperature: -20C to 80C
Air to open, air to close or spring to close (spring return)

Sizing Criteria

Torque output dependant upon air supply pressure or quantity of springs.
Allow a safety factor when sizing.
Valve torque increases when idle for long periods.
Valve torque increases in dry duty applications.


Body coating options: ENP, PTFE or Epoxy
120 or 180 Degree rotation


CH-air pneumatic actuator with hard anodised aluminium housing, rack and pinion design, manufactured in the EU. Model ‘A’ Type. Driven by compressed air with air to open OR spring to close, double acting function. Conforms to ISO5211 for mounting of valves, and Namur plus VDI-VDE3845 for mounting of solenoid valves, limit switch boxes and positioners. CE marked. ATEX Zone I & II certified and Sil 3 rated. Buy CH-air actuators and actuated valves online at AVS.