Featuring a dual 1/4" barb connection for seamless pneumatic tubing integration

preventing pressure loss and protecting the combustion chamber from moisture infiltration

this bracket plate ensures a perfect fit without the need for field modifications

this gasket is a standard inclusion in full 4-inch E-valve repair kits

OEM kits utilize specific durometer ratings and chemical-resistant compounds matched to the original valve’s media specifications

McDonnell & Miller 250-3/4-30 Valve Els PW 17895 Featuring a dual 1/4" barbThe McDonnell & Miller 250 3 4 30 (Part Number 181225) is a high capacity 3 4" NPT pressure relief valve engineered specifically for hydronic heating systems and storage tanks. Rated for a set pressure of 30 PSI and a substantial 790,000 BTU capacity, this valve provides critical over pressure protection by utilizing a fail safe spring loaded mechanism. Its heavy duty bronze body and seat, paired with an EPDM rubber diaphragm, ensure resilient