Danfoss 067L1021 TRE10-8 Expansion Valve

The Danfoss 067L1021 TRE10-8 Expansion Valve is a high-capacity, balanced port TXV engineered specifically for technical performance in split systems, heat pumps, and light commercial air conditioning units. Designed for R22 refrigerant, this valve features a 5/8" x 7/8" ODF solder connection and provides a nominal capacity of 8 tons. The biflow operation capability, enabled by its two-way balanced port orifice, makes it an ideal choice for heat pump service where the superheat setting must remain stable despite varying head pressures or flow directions.

Constructed with a hot-pressed brass body and a laser-welded stainless steel power element, the 067L1021 is built to withstand high working pressures up to 610 psig. The externally equalized design utilizes a 1/4" ODF connection to ensure accurate refrigerant injection by compensating for pressure drops across the evaporator. With its bimetal connectors, technicians can perform waterless soldering, significantly reducing installation time and preventing internal component damage. This thermostatic expansion valve provides the precise superheat control required to protect the compressor from liquid slugging while maintaining optimal system efficiency.

• Biflow Capability: The balanced port design allows for consistent performance in both heating and cooling modes, eliminating the need for multiple valves in heat pump applications.
• Durable Construction: Features a stainless steel diaphragm and capillary tube for superior corrosion resistance and high vibration tolerance in demanding environments.
• Efficient Installation: Integrated bimetal solder connections allow for fast brazing without the need for wet rags or extensive cooling during the process.
• System Protection: Precisely regulates the liquid refrigerant flow to maintain a constant superheat, ensuring the evaporator is fully utilized without risking compressor damage.

Is the superheat on the TRE10-8 adjustable?
Yes, this model features an external superheat adjustment spindle, allowing technicians to fine-tune the static superheat to meet specific system requirements in the field.

Can this valve be used with refrigerants other than R22?
While optimized for R22 applications, the TRE series architecture is compatible with various fluorinated refrigerants; however, the power element charge in the 067L1021 is specific to R22 pressure-temperature curves.

Why is external equalization necessary for this 8-ton valve?
In high-capacity systems, the pressure drop through the evaporator can be significant. External equalization allows the valve to sense actual suction pressure at the evaporator outlet, ensuring accurate refrigerant flow control.

This item is not eligible for free shipping.

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.