0 to 30 Psi Range

preventing overheating and ensuring the unit operates within peak efficiency parameters

Designed for precision and reliability

though it is also compatible with existing wells if the threads and depth match the sensor bulb

McDonnell & Miller 250-1-30 Valve 30067439-890 0 to 30 Psi RangeFor high performance hydronic heating systems, the McDonnell & Miller 250 1 30 (Part Number 181925) is a heavy duty 1" NPT pressure relief valve engineered to protect ASME Section IV pressure vessels. This bronze body relief valve is factory set at 30 PSI and provides a substantial 1,170,000 BTU capacity to prevent over pressure conditions in large scale boiler applications. Designed for maximum durability, it features an EPDM rubber diaphragm and