Mcdonnell & Miller 193-7B-M, Combo Low Water Cut-Off & Pump Controller w/ #7B Switch w/ Manual Reset (Steam)

" For commercial and industrial low or high pressure steam boilers Specifications Maintains consistent water level regardless of pressure Water column with integral tappings for gauge glass and tri-cock installations For boilers of any steaming capacity Magnetic repulsion eliminates need for bellows 7B switch (135ohm proportional control signal) to maintain constant boiler water level 1"" NPT connections Maximum pressure 150 psi (10.5 kg/cm2) "