McDonnell & Miller 64-A Low Water Cut Off Refrigerant if your specific application requires

if your specific application requires a free-flow gravity feed

4-inch junction box

The SA25A-15 assembly features a robust stem and a durable disc material optimized for the thermal cycling and mechanical stresses typical of commercial boiler rooms

the Nordyne 904531 corrects irregular cycling and ensures the air handler operates within designed thermal limits for optimal heat exchange and airflow

McDonnell & Miller 64-A Low Water Cut Off Refrigerant if your specific application requiresThe McDonnell & Miller 64 A (Part Number 143700) is a heavy duty, mechanical low water cut off engineered specifically for residential or commercial hot water and steam boilers. Designed with 1" NPT quick hook up fittings, this unit simplifies installation into gauge glass tappings, facilitating proper water level monitoring without extensive repiping. Built to handle a 50 PSI maximum boiler pressure, the 64 A utilizes an automatic reset mechanism to