Emerson Alco 054135 Expansion Valve

The Emerson Alco 054135 (Model HF 1/2 HC 5FT 3/8 X 1/2 SAE S/T) is a balanced ported thermal expansion valve engineered for precision refrigerant flow control in R22 and R407C systems. Rated for a 1/2 ton capacity, this TXV features a straight body configuration with 3/8" x 1/2" SAE flare connections, facilitating a secure mechanical fit without the need for brazing. Designed for medium temperature applications, the HC charge ensures stable superheat control across a wide range of evaporator loads. The inclusion of a 5-foot capillary tube provides necessary flexibility for remote bulb placement to ensure accurate sensing of suction line temperatures. Its stainless steel power assembly resists corrosion and prevents diaphragm fatigue, mitigating common failure points in commercial HVACR refrigeration cycles. This component is essential for maintaining system efficiency and preventing liquid slugging in small-scale cooling footprints.

• Balanced Port Design: Compensates for shifting head pressures to maintain consistent superheat.
• Multi-Refrigerant Compatibility: Optimized for use with both R22 and R407C medium-temp systems.
• Mechanical Ease: SAE flare connections allow for rapid field replacement and serviceability.
• Durable Construction: High-grade stainless steel internal components resist wear in demanding environments.

Is this valve compatible with R404A or R134a?
No, this specific model is calibrated with an HC charge specifically for R22 and R407C pressure-temperature profiles. Using this valve with other refrigerants will result in erratic superheat and potential compressor damage.

What is the purpose of the 5-foot capillary tube?
The 5' capillary tube allows for the thermal bulb to be mounted at the optimal position on the suction line, even in tight evaporator housing, ensuring the expansion valve reacts accurately to load changes.

Can this TXV be used in low-temperature freezer applications?
This model utilizes a medium temperature charge; for low-temp applications, a valve with a specialized MOP (Maximum Operating Pressure) or low-temp power element should be used to prevent motor overload during pull-down.

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.