Mcdonnell & Miller 64-M, Low Water Cut Off w/ Manual Reset

For residential, commercial, and industrial boiler applications of any steaming capacity Specifications Heavy Duty Adjustable BX outlet for easy installation Dual precision switches for dependable operation of the low water cut-off and alarm or electric water feeder Packless bellows 1" (25mm) NPT equalizing pipes required Maximum boiler pressure 50 psi (3.5 kg/cm2) Use with TC-4 on hot water systems