McDonnell & Miller 63 Boiler Low Water Cut-OffMcDonnell & Miller 63 Boiler Low Water Cut Off delivers reliable boiler protection for steam and hot water systems. This heavy duty mechanical low water cutoff ensures safe operation across residential, commercial, and industrial applications. With a 1 inch threaded port connection, it installs quickly on most boiler lines and provides dependable response to water level changes. Designed for flexible electrical performance and rugged duty, this unit

Long capillary: 36 inch sensor line for easy mounting

the HK38EA012 PCB is compatible with common furnace and air handler control modules

it uses a rugged diaphragm mechanism to maintain stable pressure and reliable shutoff

Installation: Easy replacement with minimal tools and downtime

this cover is a practical upgrade for technicians and facility managers

a differential of 3

helping protect equipment and sustain efficient operation

Bell & Gossett PL-30 is a 115V circulator with a 1/12 HP motor

Inlet Size: 1/8 Inch

This oil tank fill signal alerts operators when the tank approaches full

30 VA furnace transformer is designed as a replacement part for compatible Lennox furnace control circuits and relays

it supports regular water heater maintenance by reducing mineral buildup and preserving efficiency