Watts 0274427 Valve 326010-701 Designed to protect the primary

Designed to protect the primary heat exchanger from over-pressurization

this Size 5 Type J flange offers superior dimensional accuracy and uniform material density compared to standard cast iron alternatives

providing a plug-and-play solution for technicians looking to restore or enhance system heating capacity without complex modifications

eliminating the need for complex hardwiring in many residential or light commercial applications

Its pilot-operated diaphragm construction allows for efficient operation in high-flow settings while maintaining leak-tight shutoff

Watts 0274427 Valve 326010-701 Designed to protect the primaryThe Watts Series 174A (Ordering Code 0274427) is a high capacity boiler pressure relief valve designed specifically for hot water heating boilers and water supply heaters. This 3 4 inch NPT female inlet outlet valve is engineered with a bronze body and a non metallic disc to metal seat, ensuring consistent performance in high temperature hydronic systems. With a factory set 35 PSI pressure relief and a high steam discharge capacity of 725,000 BTU Hr,