Barber Colman Direct Acting One Pipe Thermostat

The pneumatic thermostats are used for proportional control of pneumatically actuated valves, damper actuators, and similar devices in heating ventilating and air-conditioning systems. The TK-5001 is a direct-acting thermostat, normally used in heating applications. The TK-5010 is a reverse-acting thermostat and is normally used in cooling applications.