The leading zero is frequently used in manufacturer database systems but refers to the same valve specifications

It shares the same mounting footprint

we recommend verifying specific pressure and temperature ratings for steam versus standard liquid or gas service to ensure optimal seal life

Engineered for the field

Reliable Switching: Features a continuous duty coil and mechanical life expectancy of 10 million cycles for long-term operational stability

McDonnell & Miller 64-A Low Water Cut Off Els PW 29614 The leading zero is frequentlyThe 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