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McDonnell & Miller Series 21 Make-Up Water Feeder For boiler receiver tanks. Direct mounting eliminates need for equalizing connections. Proportional feed action. Mounting Flange - six 7/16" (11. 1mm) bolt holes on a 5-3/4" (146mm) bolt circle. Soft seat provides positive seal. Maximum water supply pressure 150 psi (10. 5 kg/cm2). Maximum inlet water temperature 120&#176;F (49&#176;C). Maximum vessel pressure 35 psi (2. 5 kg/cm2). Made in the USA.

McDonnell & Miller Series 21 Make-Up Water Feeder

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