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One-pipe, single temperature, low-capacity pneumatic thermostat used to provide proportional control of pneumatic valves and mixing boxes in heating and air conditioning systems. It mounts in a slot or light troffer diffuser or a return air grill.


  • Two-way setpoint indicator for vertical or horizontal mounting.
  • Detents in 1 F (0.5 C) increments for blind operation.

Product Specifications

Single temperature, low capacity, pneumatic thermostat
Airflow Usage
0.011 scfm (5.2 mL/s)
Dimensions (in.)
1 in. high x 2 1/2 in. wide x 1 1/8 in. deep
Dimensions (mm)
25 mm high x 63 mm wide x 27 mm deep
Maximum Safe Operating Pressure (psi)
30 psi
Maximum Safe Operating Pressure (kPa)
207 kPa
Temperature Range (F)
110 F maximum
Temperature Range (C)
43 C maximum
Requires external 0.005 in. restrictor
Wall mount
Setpoint Temperature Range (F)
67 F to 83 F
Shipping and Storage Temperature Range (F)
150 F maximum
Shipping and Storage Temperature Range (C)
66 C maximum
Sensor Element
Throttling Range (F)
2 F to 10 F
Throttling Range (C)
1 C to 5 C
Direct Acting
Number of Pipes
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