the B331 is a staple for HVAC mechanical contractors seeking reliable hydronic flow control

For contractors managing building automation or process controls

it is the direct substitute for the HD52RE120 and HD52RE122

Using natural gas valves in LP applications causes hazardous over-firing and is not supported by technical specifications

This stainless steel burner assembly is a direct OEM replacement part

Heil Quaker ICP 1085991 Service Valve 320074-702 the B331 is a stapleThe Heil Quaker ICP 1085991 Suction Line Service Valve is a critical OEM replacement part designed for localized isolation and pressure monitoring in high performance residential and light commercial condensing units. This 12S 12S suction service valve features a robust 3 4 inch sweat connection, specifically engineered to withstand the thermal stresses of the refrigeration cycle without compromising seal integrity. As a genuine International Comfort