Mcdonnell & Miller 51-S, Mechanical Water Feeder

For high capacity [up to 35,000 sq. ft. (3250m2)] low pressure steam and hot water boilers with cold water feed Proportional feed action Maximum water supply pressure 100 psi (7 kg/cm2) Maximum inlet water temperature 120°F (49°C) Maximum vessel pressure 35 psi (2.5 kg/cm2)