Is this kit interchangeable with the older 1-inch models

Compact Straightway Design: The 1GSW 1/2" connection simplifies installation in compact steam systems and radiator enclosures

It features a factory-installed brass tee and a reliable SPDT snap action switch

Optimized Combustion Airflow: Engineered to provide the precise CFM required to clear the heat exchanger and satisfy pressure switch parameters

and BTC series units

Kunkle Valve 0537-H01-HM0060 Relief Valve THPU32HP7Y Is this kit interchangeable withThe Kunkle Valve 0537 H01 HM0060 is a heavy duty ASME Section IV steam relief valve designed specifically for low pressure hot water boilers, heat exchangers, and steam generators. This 2" NPT inlet x 2 1 2" NPT outlet valve is National Board certified ("HV" designator) and comes factory set at 60 PSI to handle a high discharge capacity of 10,525 lb h (PPH) or 10,524,997 BTU h. Engineered for durability in demanding HVACR environments, it features a