Emerson Alco 061730 Expansion Valve

The Emerson Alco 061730 is a high-performance HFES 3 HCA series thermal expansion valve engineered specifically for R22 and R407C systems. As a balanced port TXV, it excels in maintaining precise superheat control across varying head pressures, making it an ideal choice for heat pump applications where bi-flow capability is required. This 3-ton capacity valve features a straight body configuration with 1/2" x 5/8" ODF sweat connections and is externally equalized to compensate for pressure drops across the evaporator.

Designed for professional contractors, the Emerson 061730 includes a stainless steel replaceable power element to resist corrosion and structural fatigue. The 5-foot capillary tube and specialized heat pump charge ensure rapid response to load changes, preventing liquid slugging and optimizing compressor efficiency. Whether performing a TXV replacement or a new system install, this straight-through thermal expansion valve provides the reliability needed for light commercial and residential HVACR demands.

• Balanced Port Design: Delivers consistent refrigerant metering even during significant ambient temperature swings and pressure fluctuations.
• Bi-Directional Capability: Specifically designed for heat pump cycles, allowing efficient operation in both heating and cooling modes.
• Corrosion Resistance: Features a stainless steel power assembly that prevents premature valve failure in high-humidity environments.
• Precise Equalization: The externally equalized 1/4" connection ensures accurate sensing of evaporator outlet pressure for stable superheat.
• Field Versatility: Compatible with both R22 and R407C, providing a reliable solution for aging equipment and retrofits.

Can I use this valve on an internally equalized system?
No. This is an externally equalized TXV. The equalizer line must be connected to the suction line near the sensing bulb to ensure the valve references the correct pressure for superheat adjustment.

Does this TXV support bi-flow operation?
Yes. The HFES series is a balanced port valve capable of flow in both directions, making it suitable for heat pump outdoor or indoor coils without the need for additional check valves in some configurations.

What precautions should be taken during soldering?
Always use a wet rag or heat-sink paste to protect the straight body and power element. Excessive heat during the sweat connection process can damage internal seals and the diaphragm.

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.