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Valves & Actuation

Plastic Pneumatic Actuators

Series 79P/PA

Series 79P/PA pneumatic actuators have an aluminum housing with cataphoresis and Rilsan coating for chemical resistance. Air-to-spring models feature pre-loaded springs that safely avoid potential hazards during maintenance. The actuator functions using a double piston rack and pinion arrangement for a smooth torque profile throughout the actuator stroke. The base of the actuator has an ISO output drive and bolt circle for easy mounting to quarter turn valves. The top of the actuator has a visual position indicator and a NAMUR mounting pad to accommodate mounting accessories. The air ports are 1/2" NPT and have a NAMUR bolt pattern to accommodate flush mount solenoids.


Data Sheet

Ideal Applications Include:

Chemical Processing, Bleach Plants, Aquariums, Mining, Water Treatment, Landfills, Swimming Pools, Power Plants



Double piston, double rack and pinion


Air-to-spring (fail closed)
Air-to-spring (fail open)

Air Supply:

60psi – 120psi


Cataphoresis and Rilsan-coated aluminum body and end caps


59 to 40,710 in-lbs

Air Connections:

1/4" NPT

Mounting Dimensions:



  • Cataphoresis and Rilsan-coated aluminum body and end caps
  • Double piston, double rack and pinion
  • ISO valve mounting pattern
  • ISO female star output drive
  • NAMUR accessory mounting pattern
  • 80psi (recommended) to 120psi (maximum) filtered air supply
  • Spring return models have cataphoresis coating, or chromium passivation for spring protection
  • End position adjustable travel stops
  • Polyacetal or PTFE/bronze piston guides
  • Self-lubricating BUNA-N o-ring seals
  • -25° F to 195° F temperature range
  • 1/4" NPT air connections
  • Available in air-to-air (double acting) and air-to-spring (single acting, or spring return failsafe) models
  • Position indication through visible indicator knob and flats on actuator shaft
  • Output shaft constructed of cataphoresis coated steel


  • Sizing for low air supply pressure (60psi)
  • Direct mount NAMUR solenoids in various types and voltage ratings (solenoids piped in a closed loop design)
  • NAMUR double limit switches in various types and voltage ratings
  • NAMUR pneumatic positioners (3 - 15psi)
  • NAMUR electro-pneumatic positioners (4-20mA)
  • Limit switch or transmitter available for positioners
  • Bus systems