Watts 0121479 Valve 30067439-890 this furnace safety switch prevents

this furnace safety switch prevents hazardous flue gas buildup by monitoring critical venting pressure

By preventing the infiltration of cold air through the chimney

For technicians servicing VAV terminal units

this unit features self-configuring circuitry that automatically adjusts to input voltages ranging from 24 to 277 VAC

is engineered specifically for the TE 12 expansion valve series

Watts 0121479 Valve 30067439-890 this furnace safety switch preventsFor high demand hydronic systems and hot water space heating boilers, the Watts 0121479 (model LF174A 3 4 125) provides critical overpressure protection. This lead free boiler pressure relief valve is engineered with a lead free copper silicon alloy body to ensure durability and compliance in various installations. Featuring a 3 4 inch NPT female inlet and outlet, it manages a broad 2,070,000 BTU hr capacity at a fixed 125 PSI relief setting. The non