Danfoss 068U1034 Orifice Assembly

The Danfoss 068U1034 is a precision-engineered replaceable orifice assembly size 04, designed specifically for the Danfoss TUA and TUAE series thermostatic expansion valves. This component is essential for maintaining precise superheat control and refrigerant flow modulation in small-to-medium scale refrigeration systems. The 068U103400 is identical to this model, ensuring total cross-compatibility for field replacements. Constructed with a high-grade stainless steel filter and a precise needle-and-seat configuration, it offers superior resistance to mechanical wear and debris accumulation. HVACR technicians typically utilize this Danfoss TUA orifice in applications involving R22, R134a, R404A, and R407C refrigerants, though capacity ratings will fluctuate based on the specific thermodynamic properties of the charge. Proper installation requires ensuring the valve body is free of contaminants to prevent hunting or localized pressure drops that can lead to evaporator icing. This TXV orifice replacement provides reliable performance and facilitates easy system maintenance without necessitating the replacement of the entire valve body.

• Interchangeable Design: Compatible with both TUA and TUAE stainless steel valve bodies for maximum inventory flexibility.
• Debris Protection: Features an integrated strainer to protect the orifice seat from system contaminants and particulates.
• Stable Superheat Control: Optimized for linear flow characteristics to prevent liquid floodback and ensure compressor longevity.
• Wide Refrigerant Compatibility: Suitable for a variety of HFC and HCFC refrigerants common in light commercial HVACR.

Common Technical Questions

Is the 068U1034 compatible with older brass T-series valves?
No, this orifice assembly is specifically engineered for the stainless steel TUA/TUAE series and is not backwards compatible with the older brass Danfoss TXV lines.

Does this assembly include the filter and spring?
Yes, the Danfoss 068U1034 is a complete orifice insert that includes the necessary filtration screen for standard installs.

What is the rated capacity of the 04 orifice size?
Capacity varies by refrigerant and evaporating temperature; however, the size 04 is generally rated for nominal capacities in the 0.5 to 1.5 ton range depending on specific system 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.