Emerson Alco 056820 Expansion Valve

The Emerson Alco 056820 is a high-performance HFES 10 HCA thermostatic expansion valve engineered for demanding 10-ton commercial refrigeration and air conditioning plant maintenance. This balanced port expansion valve is specifically designed to handle the pressure fluctuations common in systems utilizing R22 or R407C refrigerant, ensuring stable superheat control even under varying head pressures or partial load conditions. Featuring a 5/8" x 7/8" ODF sweat connection and a straight-through body configuration, it streamlines the brazing process for field technicians. The externally equalized design improves evaporator efficiency, while the 5-foot capillary tube provides the reach needed for flexible bulb placement on suction lines. Built with a stainless steel power element, this valve resists corrosion and mechanical fatigue, making it a reliable choice for heat pump applications where bi-directional flow and precise liquid metering are critical for protecting the compressor from liquid slugging.

• Balanced Port Design: Eliminates the effects of inlet pressure variations, maintaining consistent superheat adjustment across a wide operating range.
• Enhanced Durability: The laser-welded stainless steel power assembly provides superior resistance to corrosion and prevents premature valve failure.
• Application Versatility: Optimized with a heat pump charge (HCA), making it suitable for both cooling and heating cycles in 10-ton systems.
• Installation Efficiency: Straight-body ODF connections allow for a clean, professional fit-up in standard piping layouts.
• Hermetic Construction: Fully welded design minimizes potential leak points, crucial for long-term system integrity.

Is the Emerson 056820 compatible with R410A systems?
No, this specific model is calibrated for R22 and R407C. Using it with R410A will lead to improper metering and potential system damage due to pressure rating differences.

Does this valve support bi-directional flow for heat pumps?
Yes, the HFES series is designed with a balanced port that allows for efficient operation in both heating and cooling modes, provided it is sized correctly for the capacity requirements.

What is the benefit of an externally equalized TXV in this 10-ton model?
The external equalizer compensates for the pressure drop across the evaporator and distributor, ensuring that the valve accurately senses the true suction pressure for precise refrigerant metering.

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.