Danfoss 067N9404 Expansion Valve

For mid-to-large scale commercial AC and heat pump systems, the Danfoss 067N9404 serves as a high-precision solution for liquid refrigerant injection. This Type TGEX 10 thermostatic expansion valve is engineered with a 6 ton capacity and features a straight body design (1/2" ODF x 7/8" ODF) to ensure streamlined installation in narrow piping layouts. Designed for R22 and R407C refrigerants, it employs a balanced port and double-diaphragm construction to maintain stable superheat under fluctuating head pressures and varying evaporator loads. The inclusion of a Maximum Operating Pressure (MOP 667 PSI) charge provides essential compressor protection by limiting suction pressure during startup or high-load conditions. As the direct replacement for 068H6204, this externally equalized TXV facilitates accurate superheat control and improved seasonal efficiency across light commercial rooftop units and chillers.

Key Benefits

• Dual Refrigerant Compatibility: Specifically optimized for R22 and R407C, providing versatile performance for legacy and retrofit applications.
• Enhanced System Stability: The 60" capillary tube and bulb strap enable precise remote sensing, while the #6 orifice ensures stable 6-ton capacity.
• Compressor Protection: Integrated MOP 667 PSI charge prevents motor overload by capping evaporation pressure during peak operation.
• Biflow Capability: Designed for both cooling and heating cycles in high-efficiency heat pump applications.
• Durability: Features a hermetic stainless steel power element and a rugged brass body to resist corrosion and structural fatigue.

Common Questions

Is the Danfoss 067N9404 a direct cross for the 068H6204 model?
Yes, the 067N9404 is the official direct replacement for the discontinued 068H6204, matching its capacity and connection specs.

Does this TXV support bidirectional flow?
Yes, the TGE series design allows for bi-flow operation, making it suitable for modern heat pump systems with expansion in both directions.

How does the MOP feature function in this valve?
The Maximum Operating Pressure charge limits the pressure in the evaporator to 667 PSI, protecting the compressor motor from excessive load during "hot starts" or high ambient conditions.

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.