preventing overheating and ensuring the unit operates within peak efficiency parameters

As an auto-reset limit switch

0 to 30 Psi Range

High flow capacity of 20 SCFM ensures minimal pressure drop across the filtration stage

McDonnell & Miller 250-1-30 Valve 30067439-890 preventing overheating and ensuring theFor 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