Honeywell Pneumatic Thermostat Reverse Acting, Wall Thermostat, 1 or 2 pipe operation

The TP9630 Series Pneumatic Thermostats provide proportional control of pneumatic valve and damper actuators in heating or air conditioning systems. The Thermostat has a high-efficiency air filter, a self-sealing gage tap, and a concealable setpoint adjustment knob. Covers are provided with all models. Features: Plug-in mounting for easier installation and service One- or two-pipe installation for greater application flexibility Adjustable throttling range for optimum control Low air consumption for lower installation first cost Contemporary, styled cover