McDonnell & Miller 64-A Low Water Cut Off Freon Each unit undergoes rigorous factory

Each unit undergoes rigorous factory testing to verify electrical integrity and mechanical performance

Induced power from the monitored line means no external power supply is required for the normally open current switch output

and 430 series units

the older T-3110 cannot be used on newer VG7000 series valves

McDonnell & Miller 64-A Low Water Cut Off Freon Each unit undergoes rigorous factoryThe 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