McDonnell & Miller 51S Water Feeder/Low Water Cut-OffThe McDonnell & Miller 51S Water Feeder is a reliable Water Feeder Low Water Cut Off for boiler systems, delivering automatic water feed and protecting against hazardous low water conditions. Featuring a 1 inch threaded port and mechanical actuation, it offers precise control and durable performance across typical commercial boilers. Designed for 120 240 VAC operation, this unit balances efficiency with durability, ensuring dependable startup and

Durable design built for long service life in challenging environments

Compatibility: V9A boiler models and related cover plates

a 500 square inch filtering area for extended service

accurate motion

It’s engineered to be a robust replacement part that minimizes downtime and keeps your equipment operating at peak efficiency

Class 1 Division 2

This circuit board delivers strong signal integrity

and a voltage rating of 120 VAC

The CAS-1 is designed for oil burners and provides a dedicated air supply to ensure safe

This combustion air system is designed for use on oil burners and complies with UL (Canada and US) standards

it reduces downtime and keeps doors aligned for proper airflow and access

it complements panel hardware