Emerson Alco 056819 Expansion Valve

The Emerson Alco 056819 Expansion Valve (Model HFES 8 HCA) is a high-performance, balanced ported valve engineered specifically for heavy-duty commercial refrigeration and 8rd-party heat pump applications. Utilizing a straight body design with 5/8" x 7/8" ODF sweat connections, this externally equalized valve ensures precise refrigerant flow control by compensating for pressure drops across the evaporator. It is optimized for R22 and R407C systems, featuring a specialized HCA heat pump charge that maintains stable superheat levels during both heating and cooling cycles. The stainless steel power assembly is laser-welded to prevent corrosion and atmospheric contamination, extending the service life of the metering device. With a 5-foot capillary tube and a robust 450 psig maximum working pressure, this 8-ton TXV provides the reliability contractors need for large-scale HVAC/R installations where maintaining system equilibrium under varying load conditions is critical for compressor protection.

• Balanced Port Design: Delivers superior superheat control and stable operation under varying head pressures or partial load conditions.
• Bi-Directional Capability: Specifically designed for heat pump applications, allowing efficient flow management in multiple directions.
• Corrosion Resistance: High-grade stainless steel replaceable power assembly guards against harsh environments and unit vibration.
• External Equalization: Essential for 8-ton capacity systems to ensure accurate sensing of evaporator outlet pressure.
• Broad Compatibility: Fully compatible with R22 and R407C refrigerants for versatile field replacement or new installs.

Is the superheat adjustable on the HFES 8 HCA model?
Yes, this model features an external superheat adjustment nut, allowing technicians to fine-tune system performance based on specific evaporator requirements.

Can this valve be used in bi-flow applications?
While the HF series remains stable in bi-directional flow, this specific 8-ton thermostatic expansion valve is optimized with a heat pump charge to handle the demands of reversing cycles without losing control stability.

What is the maximum pressure rating for this Alco TXV?
The valve is rated for a maximum working pressure of 450 psig, making it suitable for standard high-pressure refrigeration and air conditioning environments.

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.