Trust this veteran-grade HVAC control valve for consistent performance in light industrial and commercial building automation systems

ensuring correct BTU input and orifice alignment

streamlining the refrigeration valve assembly process

Its universal integration making it a reliable substitute for SSAC and Robertshaw controls in demanding field applications

This OEM pressure switch serves as a blower prover

Nordyne 661021R Orifice R-410A Trust this veteran-grade HVAC controlThe Nordyne 661021R Orifice is a precision engineered Natural Gas Main Burner Orifice designed to maintain exact fuel to air ratios in residential heating systems. Featuring a #21 drill size (nominal . 021 diameter), this OEM component is a direct replacement for the Nortek 661021, ensuring calibrated gas flow for the MG1E 077 gas furnace and compatible mobile home heating units. For a technician in the field, using a correctly sized burner orifice is