Mcdonnell & Miller 53, Mechanical Water Feeder

**Note:** Image may not be exact representation of item. Series 53/53-2 Mechanical Water Feeders/Low Water Cut-Offs For low pressure steam and hot water boilers larger than 5,000 sq. ft. (465m2) with hot or cold water feed Optional features v No. 2 switch v Manual reset v 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)