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)
