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McDonnell & Miller General Catalogue Industrial Controls

McDonnell & Miller Series 53/53-2 Mechanical Water Feeder

• For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) with hot or cold water feed
• Optional features
– No. 2 switch
– Manual reset
– Float block
• Proportional feed action
• Model 53 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 vessel pressure 75 psi (5.3 kg/cm2)

The McDonnell & Miller Series 53 provides continuous protection against a low water condition. Furthermore it satisfies pump control needs for commercial and industrial steam boilers.

If you need a different model other than those listed, please contact us at

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