Description
The Crandall TK-1101-0-CSS Pneumatic Room Thermostat is a two-pipe reverse acting control device designed for use in pneumatic HVAC systems. This thermostat uses a sensitive bimetal thermostatic element and pilot-operated relay to provide accurate and stable control of pneumatic actuators, valves, or dampers as room temperature changes. Calibrated for a 55 °F to 85 °F range, it delivers dependable pneumatic control performance with repeatable actuation. Ideal for HVAC technicians and controls contractors, it supports reliable room environment regulation and consistent operation in commercial building applications. Pneumatic feedback ensures smooth control transitions without excessive cycling.
Key Features
- Two-pipe reverse acting pneumatic room thermostat calibrated for 55 °F – 85 °F
- Sensitive bimetal element with pilot-operated relay for stable control response
- Designed for accurate pneumatic actuation of valves, dampers, and controllers
- Compact housing for standard thermostat installations in occupied spaces
- Supports dependable temperature regulation and reduces system cycling







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