Engineered with a nickel-plated forged brass body and stainless steel ball and stem

glycol solutions (up to 50%)

allowing for automatic set point readjustment based on external variables

Multi-Speed Versatility: Four-speed taps allow for precise CFM adjustments to match the specific ductwork static pressure requirements

Direct Cross-Compatibility: Precise replacement for Alco A3F-D and Superior DF35A cores in compatible suction line shells

Emerson Alco 054390 Power Assembly 321702-401 Engineered with a nickel-plated forgedThe Emerson Alco 054390, also identified as the XB 1019HC2B power assembly, is a critical replacement component for high capacity thermostatic expansion valves. Designed specifically for R22 refrigerant systems, this power element features a 1 4" SAE flare equalizer connection, ensuring accurate superheat sensing and reliable refrigerant metering across varying load conditions. Operating within an application temperature range of 20F to +50F, this