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The Lennox 13H28 Transformer is the designated OEM replacement for 51M4401
installing this Nordyne 387210R Air Pipe will restore the proper pressure differential required for the pressure switch to close
The valve is optimized for R134a and R404A refrigerants
Reduced Return Trips: Precision-molded connectors minimize the risk of loose connections or arcing at the compressor terminals
preventing premature motor failure and ensuring the structural integrity of the combustion blower system
Antunes Controls 803112501 Pressure Switch Els PW 17895 The Lennox 13H28 Transformer isThe Antunes Controls 803112501 is a high performance LGP A Low Gas Pressure Switch designed for precise monitoring of combustible gases in industrial and commercial burner systems. This manual reset SPDT pressure switch features an adjustable set point range of 1 6" W. C., ensuring critical safety shut off when pressure drops below the required threshold. Built for reliability in demanding environments, the unit includes a standard 1 4" NPT connection