Mcdonnell & Miller 42S-A, Combo Low Water Cut-Off - Pump Controller (Steam) w/quick hook-up fittings

For residential, commercial, and industrial low and medium pressure steam boilers with a separate water column Specifications For boilers of any steaming capacity Monel bellows provides corrosion resistance Single pole, single throw snap action switches Enclosed junction box protects switches Quick hook-up fittings Maximum pressure 50 psi (3.5 kg/cm2)