McDonnell & Miller 53 Water Feeder Els PW 29614 dry air supply between 15

dry air supply between 15 and 30 PSIG to prevent port contamination and hunting

this bronze-bodied safety valve is factory-set at 75 PSI to prevent over-pressurization in large-scale hydronic heating installations

utilizing a unique modulator-regulator design to maintain consistent outlet pressure despite fluctuations in 1/2 PSI max inlet supply

while the 1-1/2 inch expanded outlet allows for high-velocity discharge without restriction

McDonnell & Miller 53 Water Feeder Els PW 29614 dry air supply between 15The McDonnell & Miller 53 is a heavy duty mechanical water feeder engineered for maintaining precise water levels in large scale low pressure steam and hot water boilers exceeding 5,000 sq. ft. in capacity. Featuring rugged 1" NPT connections, this part number 136900 is designed to handle a maximum vessel pressure of 75 PSI, offering a significantly higher threshold than the standard 35 PSI found in the Series 51 counterparts. The unit provides