McDonnell & Miller 250-3/4-15 Valve Els PW 17895 a NEMA-rated weather shield is

a NEMA-rated weather shield is required to protect the assembly from the elements

providing stable and repeatable linear movement

Functioning as a master module

typically found on the suction/discharge lines of specific Trane and American Standard air handlers and condensers

and weather-compensated heating resets

McDonnell & Miller 250-3/4-15 Valve Els PW 17895 a NEMA-rated weather shield isThe McDonnell & Miller 250 3 4 15 is a high performance 3 4" NPT Pressure Relief Valve engineered for critical over pressure protection in hydronic heating systems and storage tanks. Featuring a robust bronze body and seat, this valve is factory set at 15 PSI with a substantial thermal discharge capacity of 515,000 BTU hr. Designed to meet ASME Section IV code requirements for heating boilers, it utilizes an EPDM rubber diaphragm and seat disc to