McDonnell & Miller Mechanical Low Water Cut-Offs, Series 61, 67 and 69 Are Used For Residential and Commercial Low Pressure Steam Boiler Applications.
McDonnell & Miller Mechanical Low Water Cut-Offs, Series 61, 67 and 69 are solidly manufactured for long lasting durability and dependability. For boilers of any steaming capacity. Series 61 units have adjustable BX outlet for easy installation. Dual precision switches for dependable operation of the low water cut-off and alarm or electric water feeder. Pack less bellows. 1 inch NPT equalizing pipes and blow down valve required. Series 67 units have lever-operated, full port ball valve for easy blow down. Available with or without quick hook-up fittings. Series 69 units are for mounting in 2-1/2 inch NPT boiler side tapings. Available for 1-3/16, 2-1/4, and 3-1/8 inch insertion. All cut-offs have 20 psi maximum steam pressure.
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