Emerson Alco 064102 Expansion Valve

When you're out in the field servicing a 2.5-ton system, you need hardware that can handle the specific load profiles of R22 and R407C refrigerants. The Emerson Alco 064102, model AACE 2 1/2 HAA, is a high-performance thermal expansion valve engineered for precision superheat control in residential air conditioning and heat pump applications. Featuring a stainless steel power element, this hermetic valve is built to resist corrosion and prevent the diaphragm fatigue commonly seen in harsh environments. The externally equalized design ensures the valve accurately senses evaporator pressure, making it the go-to choice for systems with high pressure drops across the distributor. This A-Series TXV is equipped with an internal check valve, which is vital for heat pump service as it allows for reverse flow bypass during the heating cycle without the need for additional external piping. The 3/8" x 1/2" ODF sweat connections and straight-through body configuration simplify brazing in tight mechanical spaces. With a 30-inch capillary tube and a wide range charge, this valve provides stable hunting-free operation across varying ambient conditions. For contractors, the AACE 2 1/2 HAA 30IN represents a reliable solution for maintaining optimal system efficiency and protecting the compressor from liquid slugging.

• Internal Check Valve: Simplifies heat pump installations by allowing reverse flow without extra check valve piping.
• Stainless Steel Power Element: Enhances durability and prevents premature failure caused by chemical corrosion or moisture.
• Hermetic Construction: Mass spectrometer tested to ensure external leakage rates remain below 0.10 oz/year.
• Wide Range HAA Charge: Provides consistent performance across a broad spectrum of evaporating temperatures.
• External Equalizer: Corrects for pressure drops in the evaporator coil to maintain precise superheat settings.

Can I use this valve on an R-410A system?
No. This specific model uses an HAA charge calibrated for R22 and R407C refrigerants. Using it with R-410A will result in incorrect superheat and potential compressor damage due to different pressure-temperature curves.

Does this TXV require a specific orientation during installation?
While the straight-through body offers flexibility, the sensing bulb must be mounted on a horizontal section of the suction line at the 4 o'clock or 8 o'clock position (on lines 7/8" or larger) to ensure accurate liquid-vapor sensing.

Is the superheat adjustable on the AACE series?
Yes, the "A" in the AACE prefix signifies that this is an adjustable superheat model, allowing you to fine-tune the system's performance after installation.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.