Heil Quaker ICP 1178499 Expansion Valve

The Heil Quaker ICP 1178499 Expansion Valve is a critical OEM replacement part engineered for high-performance 4-ton cooling systems. Designed specifically for R410A refrigerant, this thermostatic expansion valve (TXV) provides precise metering to maintain optimal superheat across varying load conditions. As a genuine ICP HVAC part, it ensures seamless compatibility with various International Comfort Products brands, including Arcoaire, Comfortmaker, and Tempstar, effectively preventing evaporator flood-back and compressor slugging.

For technicians in the field, the ICP 1178499 serves as a direct solution for systems exhibiting restricted refrigerant flow or inconsistent suction pressures. This 4-ton expansion valve features a robust design capable of handling the high-pressure demands of R410A systems, ensuring the evaporator coil operates at peak thermal efficiency. Utilizing a genuine Heil Quaker 1178499 replacement maintains the factory-specified pressure drop, which is essential for protecting the compressor and extending the functional life of the air conditioning or heat pump unit.

• Precision Refrigerant Metering: Maintains exact superheat levels to maximize R410A system efficiency and cooling capacity.
• OEM Compatibility: Guaranteed fit for ICP 4-ton units, reducing installation time and the need for field modifications.
• System Protection: Actively prevents liquid refrigerant from reaching the compressor, mitigating the risk of mechanical failure.
• Technical Reliability: Engineered to withstand the thermal and pressure cycling typical of residential and light commercial HVAC applications.

What are the symptoms of a failing 1178499 expansion valve?
Technicians often encounter low suction pressure, high superheat, or frost accumulation on the evaporator coil when this valve is restricted or stuck closed. If the valve is stuck open, you may observe low superheat and potential liquid slugging at the compressor.

Is this valve compatible with other refrigerants like R-22?
No, this component is specifically calibrated and orifice-sized for R410A refrigerant systems. Using it with R-22 will result in improper metering and potential system damage.

Does the 1178499 include the sensing bulb and equalizer line?
Yes, this TXV kit typically includes the sensing bulb required for thermal feedback and the external equalizer connection to ensure accurate diaphragm response based on evaporator outlet pressure.

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.