McDonnell & Miller 150S-M-MD Controller Refrigerant This 10-5/8" diameter by 8-1/8"

This 10-5/8" diameter by 8-1/8" width wheel features a 1/2" bore size and 48 concave blades designed for efficient air movement

normally open (SPNO) component is calibrated for specialized performance

Industrial-Grade Build: Features a rugged zinc die-cast housing that protects internal components from debris and environmental stress

failure to energize the main gas valve after pilot ignition

it ensures seamless integration and high-reliability performance within the liquid

McDonnell & Miller 150S-M-MD Controller Refrigerant This 10-5/8" diameter by 8-1/8"The McDonnell & Miller 150S M MD Controller (Part Number 172802) is a specialized combination low water cut off and pump controller designed for commercial and industrial steam boiler applications. This model is engineered with maximum differential operation, which is critical for preventing nuisance burner shutdowns in low pressure systems by allowing for a wider operating range between the pump on and pump off points. As a manual reset unit, it