Watts 0121494 Relief Valve R-410A this unit features a fixed

this unit features a fixed 10-degree differential

It is designed for specific pressure duties and should not be used as a substitute for multi-stage or different "WC rated switches

Enhanced Protection: Integrated dust cover prevents environmental contaminants from pitting or fouling the contacts

For hot water (hydronic) systems

is manufactured to precise tolerances for seamless integration into your existing hardware

Watts 0121494 Relief Valve R-410A this unit features a fixedThe Watts 0121494, also identified as the LF174A 1 75, is a high capacity pressure relief valve designed specifically for hot water heating boilers and hydronic heating systems. Featuring a 1 inch female NPT inlet and outlet, this Lead Free copper silicon alloy valve provides robust protection against over pressure conditions with a factory set relief pressure of 75 PSI. With a massive steam discharge capacity of 2,055,000 BTU hr, it is engineered for