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Mahogany paper grain — description and returns beneath the overlapping buy card.
replacing HH12ZA178 and HH12ZA178A exactly
the 310451 is compatible with high-performance McDonnell & Miller FS4-3 series
Complete 9-Piece Set: Provides all necessary 3/4 inch ID gaskets for a full header service in one package
and 1611 pump models
The bimetal sensing element is tuned to open the electrical circuit at 150°F to prevent heat exchanger damage and close at 110°F once temperatures return to a safe operational threshold
Watts 0342691 Relief Valve replacing HH12ZA178 and HH12ZA178A exactlyThe Watts 0342691 (Model 335M2) is a high capacity boiler pressure relief valve engineered for hydronic heating systems and low pressure steam applications. Featuring a 3 4" female NPT inlet and 3 4" female NPT outlet, this ASME Section IV rated safety valve is factory set to 30 PSI, providing critical overpressure protection for residential and light commercial boilers. With a steam discharge capacity of 510,000 BTU hr, it serves as the direct