Copeland Comfort Control (Alco) 091042 Expansion Valve

The Copeland Comfort Control (Alco) 091042 Expansion Valve is a professional-grade NXT Series Thermal Expansion Valve (TXV) engineered specifically for high-demand R410A air conditioning and heat pump systems. Designed as a direct replacement for 093077 and 095042, this 7-ton capacity valve ensures precise refrigerant metering to maximize evaporator efficiency. The NAE 7 ZAA model features a 5/8" x 7/8" ODF sweat connection and a straight-through body for streamlined installation in tight mechanical spaces. With its 1/4" ODF external equalizer and adjustable superheat stem, techs can fine-tune system performance to prevent compressor slugging and optimize subcooling. The 5-foot capillary tube provides ample length for flexible sensing bulb placement, while the integrated check valve makes it ideal for bi-flow heat pump applications. Built for longevity, the hermetic design and stainless steel power element resist corrosion in harsh environments, maintaining stable superheat control across varying load conditions without the common failures found in lower-tier valves.

• Universal Compatibility: Serves as a 7-ton TXV replacement for legacy Alco parts 093077 and 095042.
• Enhanced System Protection: Integrated check valve supports bi-flow operation, preventing liquid migration during defrost or heating cycles.
• Precision Tuning: Adjustable superheat allows for field calibration to meet OEM specifications across diverse line set lengths.
• Robust Construction: The NXT Series utilizes a laser-welded stainless steel power element for superior durability against high-pressure R410A cycles.
• Reliable Metering: External equalizer accounts for pressure drops across the evaporator, ensuring the coil is fully utilized.

Is the 091042 suitable for heat pump applications?
Yes. This Alco 091042 includes an internal check valve, making it a standard choice for R410A heat pump systems where bi-flow refrigerant capability is required.

How do I adjust the superheat on this NAE 7 ZAA model?
The valve features a bottom adjustment stem under a brass hex cap. To increase superheat, turn the stem clockwise; to decrease superheat, turn it counterclockwise. Always allow the system to stabilize for 15-20 minutes between adjustments.

Will this replace a 5-ton or 6-ton original valve?
While this is a 7-ton expansion valve, compatibility depends on the specific mass flow requirements of your evaporator. It is specifically cataloged to replace 093077 and 095042 units. Verify your system capacity before 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.