Johnson Controls Pneumatic Thermostat, Heating and Cooling, Dual Temperature, 60° to 150°F, Air Consumption 1.5 scfm

The T-3100 and T-3300 Series proportional action pneumatic thermostats are designed to maintain temperature in accordance with the return air temperature in terminal air conditioning units. The T-3200 Series of pneumatic thermostats are designed to control pneumatic actuators in single temperature, dual pressure applications.