Features and Benefits of the McDonnell & Miller Series 150S/157S Low Water Cut Off/Pump Controler

  • 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 Model 150S-MD
  • Maximum differential operation – Prevents nuisance burner shutdowns in low pressure applications
  • Maximum operating pressure 50 psi (3.5 kg/cm2)

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