Danfoss 067L5858 TR6 Expansion Valve

The Danfoss 067L5858 TR6 Expansion Valve is a high-capacity R-22 thermal expansion valve designed for residential and light commercial air conditioning applications. Engineered for 5 to 6-ton cooling systems, this TXV utilizes a balanced port design to maintain precise superheat control across varying head pressures and load conditions. The 3/8" inlet and integrated internal check valve facilitate efficient heat pump operation by allowing reverse flow without the need for additional piping. This TXV kit simplifies installation for field replacements or system upgrades, ensuring optimal evaporator feed and preventing liquid slugging to the compressor. The stainless steel power element and laser-welded construction provide superior durability against vibration and thermal cycling, making it a reliable choice for maintaining system efficiency in R-22 charge-compensated setups.

• Balanced Port Design: Compensates for changes in head pressure, ensuring stable superheat during low-load conditions.
• Integrated Check Valve: Streamlines heat pump TXV replacement by allowing bypass flow during the heating cycle.
• Hermetic Construction: Laser-welded stainless steel body minimizes leak points and prevents diaphragm fatigue.
• Optimized Evaporator Feed: Specifically tuned for 5-6 ton R-22 systems to maximize heat transfer efficiency.
• Complete Installation Kit: Reduces downtime by providing the necessary hardware for a standard thermal expansion valve installation.

What are the symptoms of a failing TR6 expansion valve in a 5-ton R-22 system?
Technicians often observe low suction pressure combined with high superheat at the evaporator outlet. If the valve is stuck closed, you may see frosting at the TXV outlet; if stuck open, high suction pressure and zero superheat may lead to liquid floodback.

Can this TXV be used on an R410A system?
No, this specific model is calibrated for R-22 refrigerant properties. Using an R-22 valve on an R410A system will lead to improper mass flow rates and potential compressor damage due to the significant pressure differences between the two refrigerants.

Does this kit include the sensing bulb mounting hardware?
Yes, the Danfoss 067L5858 kit includes the required copper bulb straps to ensure proper thermal contact with the suction line, which is critical for accurate superheat sensing and valve modulation.

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.