Series 150S – Low Water Cut-Off/Pump Controllers

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

Features and Benefits

  • For commercial and industrial low or high pressure
  • boiler applications
  • For boilers of any steaming capacity
  • Monel bellows provides corrosion resistance
  • Snap action switches for high temperature service
    • 1 Single pole, single throw switch for pump control
    • 1 Single pole, double throw switch for low water
  • cut-off and alarm actuation
  • Optional features
    • Manual reset
    • 2 Single pole, single throw switches
    • 2 Single pole, double throw switches
    • Float block
    • BSPT threads
  • Maximum pressure 150 psi (10.5 kg/cm2)
  • For new electronic 150E Series see page 37
  • Model 150S-MD
  • Maximum differential operation – Prevents nuisance burner shutdowns in low pressure applications
  • Maximum operating pressure 50 psi (3.5 kg/cm2)

For additional information see catalog page 48

Parts Lists


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