Features and Benefits of the McDonnell & Miller Series 47-2/247-2

  • For steam and hot water boilers with cold water feed
  • Continuous maintenance of minimum safe water level, independent of electrical service
  • Proportional feed action
  • Quick hook-up fittings provided
  • Quick-change replaceable cartridge valve and strainer
  • Optional features
            – No. 2 switch
            – Manual reset
  • Model 47 can be field upgraded with a No. 2 switch to add low water cut-off function
  • Maximum water supply pressure 150 psi (10.5 kg/cm2)
  • Maximum inlet water temperature 120°F (49°C)
  • Maximum boiler pressure 25 psi (1.8 kg/cm2)

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