McDonnell & Miller Series 42S Low Water Cut-Off/Pump Controllers

By April 24, 2018June 21st, 2018Blog, Boilers and boiler controls


Features and Benefits of the McDonnell & Miller Series 42S

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



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