McDonnell & Miller 250-1-30 Valve 30067439-890 eliminating the need for complex

eliminating the need for complex field adjustments

it prevents the low-voltage control malfunctions often caused by erratic power delivery or mismatched aftermarket components

as well as multiple X-series heater sizes

while the DIN rail mount and surface mounting options ensure a streamlined installation in various control panels

McDonnell & Miller 250-1-30 Valve 30067439-890 eliminating the need for complexFor 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