McDonnell & Miller 150S-M-HD Low Water Cut-Off/Pump Controller Head MechanismMcDonnell & Miller 150S M HD Low Water Cut Off Pump Controller Head Mechanism is a rugged head assembly designed to safeguard boiler operations. This Type Head Mechanism is used on the 150S Series Low Water Cut Off Pump Controller and includes a manual reset for quick fault recovery and restart. Designed for reliable boiler safety, the head mechanism monitors water level and drives the pump controller to prevent low water conditions. It delivers

The unit offers oil port 1/8 inch and air port 1/4 inch

refrigeration

End connections: Female Threaded x Male Threaded

Stainless steel spring

With the correct part number

general switching in HVAC and equipment panels

Designed for versatility

Connection: 11/32 inch double lead threaded

supports terminals RC

Material: Non-porous — resists moisture

Compatibility: RA-2000 and FHV-A model configurations

a reliable non-programmable thermostat designed for 1-heat/1-cool systems (Conventional/Heat Pump)