Series 42S Low Water Cut-Off/Pump Controllers

McDonnell & Miller : Combination Low Water Cut-Offs/Pump Controllers :

Features and Benefits

  • 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)

Parts Lists


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