McDonnell & Miller 250-3/4-50 Valve 30067439-890 This programmable timer relay supports

This programmable timer relay supports multiple operating modes

making it a drop-in Rheem replacement part for drum-style furnace configurations

Low Dissipation Factor: Minimizes energy loss as heat

Ensures precise airflow regulation for optimized combustion efficiency in UDAP/UDAS models

With a Maximum Working Pressure of 500 PSIG and an MOPD of 300 PSIG

McDonnell & Miller 250-3/4-50 Valve 30067439-890 This programmable timer relay supportsThe McDonnell & Miller 250 3 4 50 (Part Number 181525) is a high capacity pressure relief valve engineered specifically for technical boiler applications and hydronic heating systems. Field proven to handle a 1,160,000 BTU capacity, this 3 4" NPT valve is set at a precise 50 PSI to prevent over pressure conditions in demanding mechanical environments. Built with a heavy duty bronze body and seat, it utilizes an EPDM rubber diaphragm and seat disc to