McDonnell & Miller 47 Water Feeder with Quick Hook-Up Fittings (132700)

McDonnell & Miller model number 47 is a float-operated make-up water feeder, with quick hook-up connections, for steam or hot water boilers.

132700 McDonnell & Miller Water Feeder 47

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McDonnell & Miller 47-2-M Mechanical Water Feeder 132900

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McDonnell & Miller Series 47 Mechanical Water Feeder/Low Water Cut-off 47-2, #2 Switch 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 Series 47 F - No. 2 switch - Manual reset. Model 47 can be field upgraded with a No. 2 switch to add low water cut-off function.

McDonnell Miller 132800 Water Feeder

The successful operation of a controlled system depends on proper sizing of the valve. A practical method - utilizing a graphical presentation of valve sizing based on the Cv (C subv) ratings of valves - is presented for the GC Valves general purpose designs.

McDonnell & Miller Series 221 Make-Up Water Feeder