Heil Quaker ICP 1066926 Expansion Valve

The Heil Quaker ICP 1066926 is a professional-grade 4-ton R22 TXV valve engineered for precise refrigerant metering in residential and light commercial cooling systems. This thermostatic expansion valve features a 3/8" x 1/2" ODF (Outside Diameter Female) sweat connection, ensuring a secure, leak-resistant interface when brazed into the liquid line and evaporator inlet. Designed as a direct OEM replacement part for International Comfort Products (ICP) equipment, including brands like Heil, Tempstar, and Comfortmaker, this non-bleed expansion valve maintains optimal superheat across varying load conditions. By preventing liquid slugging and ensuring the evaporator coil is properly saturated, the ICP 1066926 expansion valve restores system efficiency and protects the compressor. Its durable construction is built to handle the pressures of R22 cycles, making it a reliable choice for contractors performing HVAC expansion valve replacement on legacy systems. For field technicians, this 4-ton thermal expansion valve provides the modulating accuracy required to stabilize suction pressures and maximize cooling capacity in aging 4-ton units.

• Precise Superheat Control: Automatically adjusts refrigerant flow to maintain the correct temperature differential, preventing evaporator freeze-ups.
• OEM Compatibility: Precision-fit for ICP-manufactured systems, ensuring the orifice sizing and bulb charge match original factory specifications.
• Compressor Protection: Limits the risk of liquid refrigerant returning to the compressor, extending the operational life of the outdoor unit.
• Optimized Heat Transfer: Ensures the entire evaporator surface is utilized for cooling by maintaining a consistent saturation level.
• Standardized ODF Connections: The 3/8" inlet and 1/2" outlet allow for standard brazing techniques without the need for specialized adapters.

How do I know if my ICP 1066926 thermal expansion valve is failing?
Common indicators of a faulty TXV include erratic suction pressures, a "starved" evaporator coil (low suction pressure with high superheat), or "flooding" (high suction pressure with low superheat), which often lead to poor cooling performance or compressor tripping.

Is this expansion valve compatible with R410A systems?
No, this specific model is designed strictly for R22 refrigerant. Using an R22 TXV in an R410A system will lead to improper metering and potential system failure due to different pressure requirements and power element calibration.

Can I use this 1066926 valve in a 3-ton or 5-ton unit?
This valve is rated for a 4-ton capacity. Installing it in a system with significantly higher or lower tonnage will result in "hunting" or improper refrigerant distribution, reducing overall efficiency and potentially damaging the compressor.

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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.