Pneumatic Bulb Thermostat, Direct Acting ( Field Changeable ), 230 Degree Safe Bulb Temperature, 3/16"x11 1/4" Bulb, Dial Marked: Cooler-Warmer, 30-90 Degree, Adjustable 5-25 Degree Throttling Range, 15 Psig Supply Air Pressure

Pneumatic Bulb Thermostat, Heating-Cooling, 20 Psig Direct Acting, 15 Psig Reverse Acting, 140 Degree Safe Bulb Temperature, 7/32"x14" Bulb, Dial Marked: Cooler-Warmer, 60-90 Degree, Adjustable 2-10 Degree Throttling Range, 15 Psig Reverse Acting ( Cooling ) Supply Air Pressure, 20 Psig Direct Acting ( Heating) Supply Air Pressure

Pneumatic Bulb Thermostat, Heating, Direct Acting ( Field Changeable ), 140 Degree Safe Bulb Temperature, 1"x 5" Bulb, Dial Marked: Cooler-Warmer, 60-90 Degree, Adjustable 2-10 Degree Throttling Range, 15 Psig Supply Air Pressure