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Datasheet generated 2026-10-07
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Danfoss TUBE thermostatic expansion valve, R134A/R513A, 1/4 in x 1/2 in solder ODF 068U2021

Danfoss · HVAC & Refrigeration · Expansion Valves · Denmark · danfoss.com
Part Number
068U2021  ·  HS 8481.80
Danfoss TUBE thermostatic expansion valve, R134A/R513A, 1/4 in x 1/2 in solder ODF 068U2021

Danfoss TUBE universal thermostatic expansion valve, OEM P/N 068U2021. Externally equalized, stainless-steel body and capillary (fixed orifice, adjustable superheat, externally equalized). Refrigerant R134a/R513A. Nominal capacity 2.1 kW (0.59 TR) at the standard rating condition. Evaporating temperature range -40 to 10 °C. Inlet 1/4 in, outlet 1/2 in, Solder ODF, external equalizer 1/4 in Solder ODF. Static superheat 4 °C (adjustable). Capillary/bulb length 800 mm. Max working pressure 34 bar (500 psig). Angleway flow direction. Hermetic laser-welded design per EU F-gas Regulation 517/2014. EAN 5702422138464.

Technical Specifications

BrandDanfoss
Part number068U2021
TypeTUBE (fixed orifice, adjustable superheat, externally equalized)
CategoryExpansion valves — thermostatic
RefrigerantR134a/R513A
Nominal capacity2.1 kW (0.59 TR)
Pressure equalizationExternally equalized
Orifice size4
Inlet connection1/4 in, Solder ODF
Outlet connection1/2 in, Solder ODF
External equalizer connection1/4 in, Solder ODF
Static superheat4 °C (7.2 °F), adjustable
Evaporating temperature range-40 °C to 10 °C (-40 °F to 50 °F)
Capillary tube / bulb length800 mm
Max working pressure34 bar (500 psig)
Body materialStainless steel
Flow directionAngleway
EAN5702422138464
ApprovalsUL, EAC
Net weight0.147 Kilogram
Product groupExpansion valves
ApprovalEAC
Capillary tube length [in]31 in
Capillary tube length [mm]800 mm
China RoHS complianceYes with exemptions
China RoHS exemption clause7.1
Connection Code(3002:X:6; 3002:X:13)
Connection materialBi-metal: Steel/copper
DirectionAngleway
Equalization connection typeSolder, ODF
Equalization size [in]1/4 in
EU RoHS complianceYes with exemptions
EU RoHS exemption clause6(a)
Flow direction indicatorLaser engraved 1-way arrow
Fluid Group2
Inlet connection typeSolder, ODF
Inlet size [in]1/4 in
Max. Working Pressure [bar]34 bar
Max. Working Pressure [psig]500 psig
Orifice capacities [kW]2.1 kW
Orifice capacities [TR]0.59 TR
Outlet connection typeSolder, ODF
Outlet size [in]1/2 in
Parts includedBulb strap
PED categoryArt. 4, par. 3
Rated cap. cond. Range N [IMP]OS=7.2 ºF
Rated cap. cond. Range N [SI]OS=4K
REACH Candidate List substancesLead (CAS no. 7439-92-1)
RefrigerantsR134a/R513A
SealNo
Static Superheat (SS) [°C]4 °C
Static Superheat (SS) [°F]7.2 °F
Superheat settingAdjustable
Temperature range [°C] [max]10 °C
Temperature range [°C] [min]-40 °C
Temperature range [°F] [max]50 °F
Temperature range [°F] [min]-40 °F
UL approved refrigerantsR134a
UL markYes

Properties

MaterialStainless steel
Pressure rating34 bar (500 psig) max working pressure
Temperature range-40 °C to 10 °C (evaporating)
Standard size1/4 in x 1/2 in
MOQ1

Compatibility

Rated for R134a/R513A. Select capacity to the evaporator load and rating condition per the TU/TC data sheet before ordering. External-equalizer models require the 1/4 in equalizer line to be connected to the evaporator outlet.

Approvals

Attached Documents