Danfoss 068Z3403 1/4 - 5.5TR Expansion Valve Body, TE 2, R404,R507A, 3/8x1/2 in, Flare, External Equalized, Single-Flow, -40 to 50 F, Capacity determined by Orifice size Sold Separately, 068Z3555
Applications: Traditional refrigeration, Self-contained refrigerators, Transport refrigeration, Supermarket refrigeration
Hermetic, laser welded, non-replaceable stainless steel power head, Laser engraved product information for lasting identification of valve type
Functional valve consists of valve body and orifice. Nominal capacity varies according to selected orifice from 1/4 to 5.5 tons
Flare Inlet, Outlet and Equalization connections. Flare/solder adapter available as an additional accessory
Make superheat adjustments 1⁄4 turn at a time (1⁄4 turn equals 1.75 F). Turning clockwise increases superheat. Turning counter-clockwise decreases superheat.
Weight : 2.0 LBR
Volume : 0.01730686 FTQ
Model : 068Z3403
UPC-EAN : 5702422114116Danfoss 068Z3403 Thermostatic Expansion Valve – TE2 for R404A and R507A
The Danfoss 068Z3403 thermostatic expansion valve (TXV) is specifically engineered for precise refrigerant flow control in refrigeration and HVAC systems using R404A or R507A. This externally equalized angleway valve delivers consistent superheat regulation in low and medium temperature applications.
Key Features
- Refrigerant: R404A, R507A
- Capacity: 0.2 to 5.75 tons (1 to 20 kW) based on orifice size
- Temperature Range: -40 F to +50 F
- Connections: 3/8 inch flare inlet × 1/2 inch flare outlet
- Valve Type: Angleway, externally equalized
- Capillary Tube Length: 59 inch
- Max Working Pressure: 500 psig
- Static Superheat: 7.2 F (adjustable)
- Identical Part Number: 068Z3555
Applications
Ideal for systems such as supermarket display cases, walk-in freezers, transport refrigeration, ice makers, and liquid coolers, where precise expansion of R404A or R507A is critical.
Competitor Equivalent Part Numbers
- Emerson TX3 series
- Sporlan ER series
- ALCO TIE series
Frequently Asked Questions
- Is the orifice interchangeable?
Yes. The TE2 body supports interchangeable orifice assemblies (01–05) for precise capacity matching. - Why does it have external equalization?
External equalization compensates for pressure drop across the evaporator, critical in low-temperature, high-load systems. - Can it be used with other refrigerants?
No. This valve is calibrated exclusively for R404A and R507A. - What is the function of the capillary tube?
The 59 inch capillary tube connects the sensing bulb to the valve, ensuring accurate and responsive superheat control.
