McDonnell & Miller Series 53-2 Mechanical Water Feeder/Low Water Cut-off W/#2 Switch

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). Made in the USA.