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Single-seated, straight-through, pneumatic valves used for proportional control of unit air conditioners using hot and/or chilled water. Replacement devices are available for Johnson, Powers, Robertshaw, Barber-Colman, and older Honeywell devices.

  • Available in normally-open (A models) or normally-closed models (B models).
  • Straight-through pattern.
  • Rotating actuator for aligning air connection with control air piping.
  • Molded replaceable composition disc for tight shut-off.
  • Flare tube connections.
  • Small physical size.
Hide Description
Body Pattern:



Unitary Valve



Temperature Range (F):

35°F to 250°F

35°F to 250°F

Flow Capacity (Cv):


Spring Range:

3 psi to 10 psi

Air Connections:

1/8" NPT

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