It serves as the authoritative replacement for part number HC37XE278A

As a delayed-opening gas valve

making it the standard choice for maintaining critical airflow across condenser coils in Carrier

the kit features high-performance pressure-sensing switches mounted on a rugged steel bracket

63-inch shaft length for a clean mechanical fit

Utica-Dunkirk FE3980C070 Pressure Switch 323055-751 It serves as the authoritativeThe Utica Dunkirk FE3980C070 Pressure Switch is an essential OEM safety component designed for high performance hydronic systems, including the CCB150 and CHB series boilers. As a veteran grade boiler water pressure switch, this part is engineered to monitor system pressure and prevent the burner from firing under unsafe low water or low pressure conditions. Built with ECR International sensors and featuring a 1 2" NPT connection, it ensures a secure,