Watts 0276770 Valve 320788-703 typically those requiring an adapter

typically those requiring an adapter for updated control board revisions

5" Johnson Controls valves

Using genuine Honeywell replacement parts ensures precise flow control and maintains the original 50:1 rangeability required for accurate temperature regulation in HVAC applications

The Heil Quaker ICP 1012595 Collector Box Gasket is a critical OEM furnace replacement part designed to maintain a precision airtight seal between the collector box and the heat exchanger

Common Installation Questions What are the signs of a failing Lennox 99K31 relay

Watts 0276770 Valve 320788-703 typically those requiring an adapterThe Watts 0276770, also designated as the Model 174A 1. 5 75, is a high capacity boiler pressure relief valve engineered specifically for heavy duty hot water space heating applications. Constructed with a rugged bronze body, this 1 1 2 inch NPT female threaded valve is built to manage large scale hydronic systems with a massive relief capacity of 4,125,000 BTU hr. Set at 75 PSI, it provides critical overpressure protection for commercial and