McDonnell & Miller 136900

53, Mechanical Water Feeder

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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)