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Valves & Actuation

Plastic Actuated Valves

Pneumatic Type-14 Diaphragm Valve (1/2" - 4")

The Type-14 diaphragm valve is available with an optional pneumatic actuator for operation via a pressurized air supply. The pneumatic actuator is available in both air to air (double acting) and air to spring (single acting) styles. The actuator replaces the valve bonnet and is an integral part of the valve. The actuator is operated with a Nitrile diaphragm which is connected directly to the valve diaphragm for quick response times. The NAMUR mounting pattern on the top of the actuator gives the option for mounting limit switches, positioners and/or a solenoid for automation. The housing is made from glass filled polypropylene for high strength and chemical resistance. A visual position indicator at the top of the actuator allows the user to confirm the valve position.


Data sheet

Ideal Applications Include:

Chemical processing, bleach plants, aquariums, mining, water treatment, landfills, swimming pools, power plants



½" – 4" Type-14


Glass filled polypropylene

Air Connections:

¼" NPT

Mounting Dimensions:

ISO and Namur


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


Diaphragm, direct acting

Air supply:

60 psi (standard)
90 psi (maximum)


  • Air-to-spring diaphragm actuator
  • Choice of failsafe action can be either spring-to close or spring-to-open
  • Corrosion resistant, coated, die-cast aluminum body
  • Diaphragm of nylon-reinforced Neoprene
  • Actuator working pressure: 60 psi MAX
  • 1/4" NPT air connection
  • Position indicator
  • Travel stop


  • Solenoids in all Electrical type ratings and voltages
  • 4–20mA output for interface with computers and other equipment
  • Travel stops for limiting valve lift
  • Limit switches for interface with computers and other equipment
  • Positioners: 3-15 PSI and 4-20mA inputs for throttling applications
  • Manual override