Honeywell Pneumatic Thermostat

Honeywell Pneumatic Thermostat, 1 or 2 Pipe, Single Setpoint, Direct Acting, 59-90 Degree Setpoint Temperature Range, 2-10 Degree Throttling Range, Wall Mount, Bimetal Sensor Element, 25 Psi Maximum Operating Pressure, 0.011 Scfm Airflow Usage, For One Pipe Order an External 0.005″ Restriction, Includes Satin Chrome Cover