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Designed with a NEMA 51 frame and Totally Enclosed Air Over (TEAO) protection
and D341313P51
Built to withstand demanding thermal environments common in furnace and air conditioning applications
It serves as a direct replacement for various Laars boiler control modules
ensuring efficient condensate discharge without the loss of live steam
Watts 0278328 Valve 323269-701 Designed with a NEMA 51The Watts 0278328 (Model 174A 2 50) is a high capacity ASME Section IV certified boiler pressure relief valve designed for commercial hot water space heating and domestic supply applications. Featuring a 2 inch NPT female threaded inlet and outlet, this bronze body safety valve provides critical overpressure protection for large scale boiler systems. It is factory set at 50 PSI, delivering a verified steam discharge capacity of 5,575,000 BTU hr. Its
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