Watts 0274515 Valve R-410A providing a reliable light-off during

providing a reliable light-off during both continuous and intermittent duty cycles

and Lennox (replacing 51H25)

This definite purpose contactor utilizes silver-cadmium oxide contacts to prevent welding and pitting

Broad Operating Range: Covers a wide setpoint span from -30 to 130 degrees F for versatile installation

providing a stable ignition source that prevents nuisance shutdowns and flame failures

Watts 0274515 Valve R-410A providing a reliable light-off duringThe Watts 0274515 (also known as the 174A 3 4 55) is a high capacity boiler pressure relief valve built for heavy duty protection in hot water heating and domestic supply systems. Engineered with a rugged bronze body, this 3 4 inch NPT valve is designed specifically to prevent catastrophic pressure buildup on supply boiler equipment. It features a 55 PSI pressure setting and an impressive ASME relief capacity of 1,025,000 BTU hr, making it a standard