McDonnell & Miller 61-HD Low Water Cut Off Els PW 17895 the air-fuel mixture is fixed

the air-fuel mixture is fixed by the venturi design and does not require manual shutter adjustment

7mA minimum flame sense current for high accuracy

Key Benefits Direct Mount Integration: Designed for seamless direct mounting to control units

Optimize your HVACR and industrial fluid control systems with the ASCO 323-478 Rebuild Kit

The foot-mount transformer configuration features a rugged base plate for secure installation inside electrical cabinets

McDonnell & Miller 61-HD Low Water Cut Off Els PW 17895 the air-fuel mixture is fixedThe McDonnell & Miller 61 HD (Part Number 140300) is a heavy duty mechanical low water cut off designed specifically for low pressure steam boiler applications. This head mechanism serves as a direct replacement component for Series 61 controllers, facilitating reliable burner circuit interruption when water levels drop below the safe line. Rated for a maximum steam pressure of 20 PSI, the 61 HD utilizes a high buoyancy float operated mechanism to