Danfoss TUB, TUBE, TCBE, TUC, TUCE Data sheet

Data Sheet

Thermostatic expansion valve Type TU and TC

Thermostatic expansion valves maintain a constant superheat level at the evaporator outlet

The thermostatic expansion valves TUA/TUAE, TCAE with exchangeable orice, TUB/TUBE/ TCBE with xed orice and TUC/TUCE/TCCE with xed orice and xed superheat setting, are made of stainless steel and therefore especially well suited to refrigeration systems in the food industry and where aggressive environments exist. These thermostatic expansion valves have been developed and designed especially for easy and quick soldering into hermetic refrigeration systems.

The valves are oered in the following rated capacities

1.

From 0.5 kW / 0.14 TR, up to 17.0 kW / 4.8 TR R407C (TU)

2.

From 19.0 kW / 5.4 TR up to 28.5 kW / 8.1 TR R407C (TC)

AI308624347152en-000301

Thermostatic expansion valve, Type TU and TC

Features

• Bi-metal connections

1.

Fast and easy brazing process – no wet wrap needed.

2.

Braze alloys with as little as 5% Ag can be used.

• Compact, lightweight design

1.

Flexible and easy integration in any system.

• Stainless steel

1.

High body strength.

2.

High corrosion resistance.

3.

High vibration resistance

• Laser-welded power element

1.

Ensures diaphragm´s structural integrity and lengthens life.

• Stainless steel capillary tube

1.

Flexible lightweight capillary tube, tolerates more bending for trouble-free installation and longer life.

2.

Greater resistance to vibration during operation because of low weight.

• Laser engraving

1.

Durable positive valve identication; no label that peels o over time.

2.

Customer-specic engraving available on request.

• Fully hermetic brazed and laser-welded design

1.

Hermetic valve in accordance with EU F-gas Regulation EU 517/2014.

2.

No external leakage which saves costs on maintenance and refrigerant loss.

3.

Protecting the environment and climate

• Manufactured according to IATF16949

1.

Quality and reliability that are second to none.

Type

Angleway

Straightway

Internal pressure equaliza‐

tion

External pressure equaliza‐

tion

Internal pressure equaliza‐

tion

External pressure equaliza‐

tion

TUB/TUBE/TCBE Adjustable superheat

TUC/TUCE/TCCE Non-adjustable superheat

TUA/TUAE/TCAE Adjustable superheat and exchangeable

orice

Thermostatic expansion valve, Type TU and TC

Portfolio overview

Table 1: Overview of available versions

1

2

3

4

5

1

2345Thermostatic element with diaphragm

Bulb with capillary tube

Setting spindle for adjustment of static superheat

SS

Orice assembly

Filter

1

2

3

4

5

1

2345Thermostatic element with diaphragm

Bulb with capillary tube

Setting spindle for adjustment of static superheat

SS (behind valve, not visible)

Orice assembly

Filter

Thermostatic expansion valve, Type TU and TC

Functions

Thermostatic expansion valves maintain a constant superheat level at the evaporator outlet. It does this by controlling the amount of refrigerant that is injected into the evaporator, taking both the evaporator load and ambient temperatures into consideration. This both optimizes the eciency of the refrigeration system and prevents liquid refrigerant from entering the suction line, possibly causing damage to the compressor. Particularly when compared to systems that use capillary tubes, the thermostatic expansion valve will oer a signicant energy saving.

Figure 1: Angleway

Figure 2: Straightway

SS OS

K

SH

Q

max.

Q

nom.

min.20%

Superheat

SSOSSH = SS + OS

Qnom

Qmax

Static superheat

Opening superheat

Total superheat

Rated capacity

Maximum capacity

Features

Value

Static superheat

SS = 4K

Opening Superheat

OS = 4K

Total superheat

SH = 4 + 4 = 8K

Thermostatic expansion valve, Type TU and TC

Figure 3: Superheat

Static superheat (SS) can be adjusted by turning the setting spindle (3), (TUB/TUBE/TCBE) Static Superheat cannot be adjusted on TUC/TUCE/TCCE.

The superheat setting is 4K for all standard valves. The opening superheat is 4K, measured from when the valve begins to open to when the valve gives its rated capacity (Qnom).

Table 2: Example

Operation

Superheat

Superheat is the controlling parameter of a TXV. Superheat, measured at the evaporator outlet, is dened as the number of degrees the refrigerant vapor is heated above its saturation temperature (boiling point), at a specic pressure. Liquid entering the compressor causes serious damage. To prevent this, the TXV will maintain a certain minimum superheat. When discussing superheat in relation to TXV valve operation, the following terms are used:

Static superheat

Static superheat, SS is the superheat above which the valve will begin to open.

Opening superheat

Opening superheat, OS, is the amount of superheat above static superheat, SS, required to produce a given valve capacity.

Total superheat

Total superheat is static superheat plus opening superheat, and is what is measured at the evaporator outlet.

Subcooling

Subcooling, measured at the condenser outlet, is dened as the number of degrees a liquid refrigerant is cooled below its saturation temperature (boiling point), at a specic pressure. Subcooling is necessary to prevent ash gas forming in the liquid line. Depending on system design, various levels of subcooling may be needed. In most cases, 2 to 5K of subcooling is adequate. If ash gas forms in the liquid line, the capacity of the TXV will be greatly reduced.

Thermostatic expansion valve, Type TU and TC

Figure 4: Superheat and Subcooling

TU stainless steel technology

Figure 5: Type TU and TC

Benets of stainless steel

The fact that the TU is an all-stainless steel expansion valve oers a number of benets:

• Stainless steel is far more corrosion- resistant than traditional valve materials.

• Stainless steel valves require no surface treatment.

• Stainless steel capillary tubes are three times stronger and twenty times more resistant to vibration than copper capillary tubes.

• Stainless steel has a greater strength- to-weight ratio, making TU valves lighter and more compact.

• Stainless steel diaphragms have greater strength and corrosion resistance for a longer life.

Danfoss precision port design

The TU thermostatic expansion valve introduces precision port design, incorporating four features that ensure superior repeatable performance over an extended valve life.

• Laser welding of the power element preserves the structural uniformity of the diaphragm, assuring consistent operation.

• A precision-machined pushrod and bushing make a practically frictionless seal with no need for a packing gland.

• The free-oating pushrod is self-aligning and eliminates binding.

• The precision-machined cone and orice accurately meter refrigerant under all operating conditions.

High quality

The TU is manufactured on fully automated, process-monitored production lines. Cellularized computer-monitored technology ensures uniform high quality and that, when delivered, every valve meets Danfoss quality standards and customer specications. Cellularized production also makes possible simultaneous production of large and small quantities of standard and custom version valves.

Advanced technology - fast and easy installation

The TU stainless steel thermostatic expansion valve has signicant installation advantages because it is a valve

Thermostatic expansion valve, Type TU and TC

designed specically for soldering. The TU can be installed in less than half the time required for traditional brassbodied valves. The valve connections are made of copper and stainless steel bi-metal which makes installation easy, reliable, and fast.

Figure 6: TUAE

No need for a wet cloth

Bi-metal has a very low thermal conductivity, actually only 10% that of copper, so heat applied during soldering remains largely in the copper layer of the connection tube, instead of being conducted to the valve body. External cooling is unnecessary. The result is less energy consumption and better solder quality. At the same time, the diaphragm's structural integrity is preserved.

Thermostatic expansion valve, Type TU and TC

Applications

Thermostatic expansion valves regulate the amount of refrigerant that is injected into the evaporator. It does this to keep a constant superheat level at the outlet of the evaporator, thereby preventing liquid refrigerant from entering the suction line and possibly causing damage to the compressor.

Typical applications for TU and TC valves are:

• Conventional refrigeration systems

• Heat pump systems

• Air conditioning systems

• Specialty refrigeration appliances

• Liquid chillers

• Ice machines

• Transport refrigeration

Figure 7: Application Diagram

Available charges

Universal charge

This is the standard charge, used in most applications. It is characterized by a very large operational evaporating temperature range, with only small variations in static superheat across the temperature range. It is available in two temperature ranges. One for normal (-40°C to +10°C / -40°F to 50°F) and one for low (-60 to -25°C / -76°F to -13°F) temperature applications.

MOP charge (MOP = Maximum Operating Pressure)

The MOP charge is used to protect the compressor motor against overload during start-up. A valve with MOP charge will throttle liquid injection into the evaporator and thus prevent the evaporating pressure from rising above the specied MOP point. Above the MOP point, any increase in sensor temperature results in only minimal additional opening of the expansion valve. A number of dierent MOP points are available





STF 4-way valve

DML / DCL Filter drier

Thermostatic expansion valve, Type TU and TC

Figure 8: MOP = Maximum Operating Pressure

NOTE:



The MOP point will change if the factory superheat setting of the expansion valve is changed. If the setting is reduced, the MOP point will go up and vice versa.

MAH charge

The Danfoss Marinite Anti-Hunt (MAH) charge can be used in dynamic systems, often A/C systems. Here it reduces valve hunting during evaporator load changes, thereby helping to maintain stable system superheat and improve system performance.

F-charge

The F-charge is designed for refrigeration systems where low total superheat is required. Valves with this charge are delivered with an optimized low static superheat setting which allows for installation with no or minimal eld adjustment. The F-charge also includes the Danfoss MAH function, as described above.

Ice charge

The ice charge is designed with an optimized static superheat characteristic, which allows for optimal function, particularly in Ice cubers, where low superheat is required in order to fully utilize the entire evaporator coil.

Milk charge

The milk charge is designed for use in milk cooling tanks where a limitation of the suction pressure is required, but where an MOP valve would suer from charge migration.

Bi-ow

Bi-ow function is sometimes used in systems with 4-way reversing valves where hot gas defrosts, or heating cycles are required. Only externally equalized TU valves with orices X to 8 and externally equalized TC valves with orices 1 and 2 – without MOP charges, can be used in bi-ow mode. When used in reverse direction, the rated valve capacity will be reduced by up to 15%. Valves for bi-ow operation should be installed so that the normal refrigerant ow is towards the main evaporator

Figure 9: Bi-ow

Sizing example

How to select a TU or TC thermostatic expansion valve. Example: Refrigerant: R134a Cooling capacity: 3KW Evaporating temperature: -10 °C

Thermostatic expansion valve, Type TU and TC

Condensing temperature: 35 °C Total (useful) superheat: 8K Subcooling: 6K

This guide will help select a thermostatic expansion valve based on the above system parameters using the Coolselector tool.

Step 1

Open the Coolselector tool and select thermostatic expansion valve. Coolselector can be downloaded from https://

www.danfoss.com/en/service-and-support/downloads/dcs/coolselector-2/ or used online on http:// coolselectoronline.danfoss.com

Step 2

Select TU/TC from product families and the refrigerant. For this example: R134a.

Step 3

Fill in the operating conditions at the top as per the system parameters stated in the example.

Figure 10: Operating conditions

Step 4

Now select the appropriate orice size from the list provided by the tool. For this example, the tool suggests TU-7, which is the valve size closest to 100% load.

Figure 11: Coolselector2 Selection TU

: 1. Always remember to include sub cooling in the selection parameters. It is important for TXV selection. When all other

parameters remain constant, an increase in sub cooling will increase the capacity of the thermostatic expansion valve. Insucient sub cooling can create ash gas before the valve and high sub cooling can create lesser ash gas after the valve.

: 2. Coolselector determines pressure drop across the valve based on the condensing and evaporating temperatures. If the

system is using a distributor, has valves in the liquid line or height variations between evaporator and condenser, the pressure drops from these components must be summarized, and given as input to the tool, using the “Distributor pressure drop” eld. The capacity of the thermostatic expansion valve is inuenced by these pressure drops.

Step 5

The code number for the valve can be selected based on additional parameters like specic charge, equalization, connector type, connection size etc. at the code number selection tab. The performance details will also be shown in detail under the Performance details tab.

Thermostatic expansion valve, Type TU and TC

Figure 12: Coolselector2 Performance curve

Step 6

For list of code numbers, click the “Code number selection” tab.

Figure 13: Coolselector2 code number selection

Types

Description

Charges available for following refrigerants

R290, R134a, R513A, R404A, R407A, R407C, R407F, R448A, R449A, R507, R410A, R452A, R600a, R454C, R455A, R1234yf, R1234ze(E), R454A TU and TC valves are continually evaluated for use with newer refrigerants. For further information please contact Danfoss.

Ignition assessment

Positive. Zone 2 (Category 3, IIA) TUA/TUAE and TCAE only approved for A1 refrigerants

Complies with PED

Yes, uid group 2, Article 4 paragraph 3, DN < 25 (inner bore)

Standard charge ranges with MOP

-40 – +10 °C / -40 − +50 °F MOP +15 °C / + 60 °F

-40 – -5 °C / -40 − +25 °F MOP 0 °C / +32 °F

-60 – -25 °C / -75 − -15 °F MOP -20 °C / -4 °F (not for R134a and R513A) For other ranges, please contact Danfoss.

Max. working pressure PS/MWP

TU (non R410A): 34 bar(g) / 500 psi(g) TU (R410A): 45.5 bar(g) / 660 psi(g) TC (all): 45.5 bar(g) / 660 psi(g)

Connection type

Solder, ODF

Connection sizes, Angleway

Inlet:

1

⁄4 in, 3/8 in, 6 mm, 10 mm Outlet: 3/8 in, 1⁄2 in, 5/8 in, 10 mm, 12 mm, 16 mm

Connection sizes, Straightway

Inlet:

1

⁄4 in, 3/8 in, 1⁄2 in, 6 mm, 10 mm, 12 mm Outlet: 3/8 in, 1⁄2 in, 5/8 in, 10 mm,

12 mm, 16 mm

Connection sizes, [External equalization]

1

⁄4 in, 6 mm

Orices, TUB(E), TUC(E)

X, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9

Orices TUA(E)

1, 2, 3, 4, 5, 6, 7, 8, 9

Orices TCAE, TCBE, TCCE

1, 2, 3

Bleed

15% (of nominal capacity) available. For 30%, contact Danfoss.

Biow operation

With ow in the opposite direction, the rated capacity is reduced by up to 15%.

Biow not recommended in

TU with orice 9 TC with orice 3 All valves with MOP charges

Biow not possible in

All valves with internal equalization

Environmental transport/storage temperature and humidity

Max. +65 °C / +150 °F, Humidity: <100% RH

Max. body temperature (mounting/operation)

+120°C / +250°F (short lived peak: +150°C / +300°F)

Min. body temperature

See Evaporating temperature range low end.

Max. bulb temperature (operation)

Standard valves: +100°C / +212°F Valves with MOP charges: +150°C / +300°F

Static superheat (SS)

Standard 4K / 7.2°F Customer-specic settings and non-adjustable valves are available. Please contact Danfoss.

Material of product

Body: Stainless steel Capillary tube: Stainless steel Connector: Bimetal (stainless steel and copper)

Standard capillary tube lengths

TU: 0.8 m / 31.5 in TC: 0.9 m / 35 in

Special capillary tube lengths available

0.3 m / 11.8 in, 0.45 m / 18.0 in and 1.5 m / 59 in

Inlet strainer

TU orice X - 4 = 100 mesh / All other TU and TC = 50 mesh / TU and TC angle = 80 mesh

Serviceable

No

Corrosion

Passed salt spray test (EN ISO 9227 NSS) and ASTM prohesion (ASTM G85) test. Both 2000 hours

Type

Orice

R410

R134

R407

R404A/R507

R290

R22

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

TUX0.74

0.21

0.32

0.09

0.5

0.15

0.37

0.11

0.49

0.14

0.48

0.13TU0

0.99

0.28

0.42

0.12

0.66

0.19

0.49

0.14

0.64

0.18

0.63

0.18TU1

1.3

0.38

0.61

0.17

0.94

0.27

0.71

0.21

0.94

0.27

0.92

0.26TU1

1.7

0.49

0.72

0.2

1.1

0.33

0.87

0.26

1.1

0.32

1.1

0.31TU3

2.1

0.61

0.95

0.27

1.5

0.42

1.1

0.33

1.5

0.41

1.4

0.4

Thermostatic expansion valve, Type TU and TC

Product specication

Technical data

Table 3: Technical data

Capacity tables

Table 4: Type TU and TC

Type

Orice

R410

R134

R407

R404A/R507

R290

R22

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

TU44.1

1.2

1.6

0.45

2.5

0.7420.59

2.6

0.72

2.5

0.7TU5

5.3

1.5

2.1

0.6

3.4

0.98

2.7

0.79

3.4

0.96

3.4

0.93TU6

8.5

2.4

3.4

0.94

5.3

1.5

4.2

1.2

5.3

1.5

5.3

1.5TU7

11.2

3.2

4.4

1.372

5.6

1.67271.9TU8

15.8

4.5

6.5

1.8

10.238

2.4

10.2

2.9

10.1

2.8TU9

23.1

6.692.5144.1

11.3

3.4

14.3

4.1

14.14TC121.2

6.1133.7

17.8

5.1133.8

19.1

5.4

18.3

5.1TC2

24.5714.9

4.2

20.4

5.9

15.1

4.4

22.2

6.3

21.2

5.9TC3

30.6

8.9

18.6

5.2

25.2

7.3

18.9

5.6

27.9

7.9

26.7

7.4

Type

Orice

R407F

R407A

R448A

R449A

R513A

R452A

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

[kw]

[TR]

TUX0.58

0.17

0.49

0.14

0.48

0.14

0.47

0.14

0.28

0.08

0.28

0.08TU0

0.76

0.22

0.65

0.19

0.63

0.18

0.61

0.18

0.36

0.1

0.31

0.09TU1

1.1

0.32

0.94

0.28

0.93

0.27

0.9

0.26

0.53

0.15

0.46

0.13TU1

1.4

0.39

1.1

0.33

1.1

0.33

1.1

0.31

0.62

0.18

0.55

0.16TU3

1.7

0.5

1.5

0.43

1.4

0.42

1.4

0.41

0.82

0.23

0.72

0.2TU4

3.1

0.91

2.6

0.77

2.5

0.74

2.4

0.71

1.4

0.4

1.3

0.36TU5

4.2

1.2

3.513.413.211.8

0.53

1.7

0.48TU6

6.5

1.9

5.5

1.6

5.3

1.5

5.1

1.5

2.9

0.83

2.7

0.75TU7

8.6

2.5

7.2

2.172

6.723.8

1.1

3.5

0.99TU8

12.4

3.6

10.5

3.1

10.139.8

2.9

5.6

1.6

5.1

1.4TU9

17.1514.4

4.2

13.9

4.1

13.647.7

2.2

7.2

2.1TC1

20.6

5.9

17.6

5.1

17.6

5.1

16.9

4.9

11.5

3.3

12.6

3.6TC2246.9

20.3

5.9

20.3

5.9

19.3

5.6

13.2

3.8

14.5

4.1TC3

30.1

8.7

25.2

7.4

25.1

7.4

23.9716.5

4.7

18.1

5.2

Type

Orice

R454A

R454C

R455A

R1234yf

R1234ze(E)

[kW}

[TR]

[kW}

[TR]

[kW}

[TR]

[kW}

[TR]

[kW}

[TR]

TUX0.59

0.17

0.46

0.13

0.52

0.15

0.27

0.08

0.20

0.06TU0

0.65

0.19

0.50

0.14

0.57

0.16

0.30

0.08

0.21

0.06TU1

0.99

0.28

0.76

0.22

0.87

0.25

0.45

0.13

0.32

0.09TU2

1.2

0.34

0.91

0.26

1.0

0.30

0.53

0.15

0.37

0.10TU3

1.6

0.44

1.2

0.34

1.4

0.38

0.69

0.20

0.49

0.14TU4

2.8

0.79

2.0

0.58

2.4

0.67

1.2

0.34

0.80

0.23TU5

3.7

1.1

2.7

0.78

3.2

0.90

1.6

0.45

1.1

0.30TU6

5.9

1.7

4.3

1.2

4.9

1.4

2.5

0.70

1.7

0.47TU7

7.8

2.2

5.6

1.6

6.5

1.9

3.3

0.92

2.2

0.62TU8

11.1

3.2

8.2

2.3

9.5

2.7

4.8

1.4

3.3

0.93TU9

15.7

4.5

11.2

3.2

12.9

3.7

6.6

1.9

4.4

1.2

Thermostatic expansion valve, Type TU and TC

The rated capacity is based on: Evaporating temperature te = 4.4 °C / 40 °F Liquid teperature tI = 37 °C / 98 °F Condensing temperature tc = 38 °C / 100 °F

Table 5: Type TU and TC

The rated capacity is based on: Evaporating temperature te = 4.4 °C / 40 °F Liquid teperature tI = 37 °C / 98 °F Condensing temperature tc = 38 °C / 100 °F

Table 6: Type TU and TC

The rated capacity is based on: Evaporating temperature te = 4.4 °C / 40 °F Liquid teperature tI = 37 °C / 98 °F Condensing temperature tc = 38 °C / 100 °F

Thermostatic expansion valve, Type TU and TC

Design

TU and TC valves are basically identical, except for the larger diaphragm on the TC. The larger diaphragm allows for more travel of the orice cone, which gives the TC valve more capacity than the TU valve.

TU and TC valves are available in both Straightway and Angleway versions. TUA(E) and TCAE only as straight ow.

Figure 14: Angle ow (xed orice)

Figure 17: TU Angleway Figure 18: TU Straightway

Figure 15: Straight ow (xed orice)

Figure 16: Straight ow (exchangeable orice)

Thermostatic expansion valve, Type TU and TC

Figure 19: TUA / TUAE (incl. orice)

Figure 20: TC Angleway Figure 21: TC Straightway

[I]

[O]

[E]

(10,8)

(39)

Ø

D

L

Ø

D

L

ØD

L2 ([E])

L1 ([O]) (32,5)

(49,6)

12,5 ø1,6

(31,8)

(44,1)

(ø14,4)

(37,1)

(21)Ø

Con. / Dim.

Size

[øD]

[øD] tolerance

[L]

[L] tolerance

[L1] ([O])

[L1] tolerance

[L2] ([E]; [I])

[L2] tolerance

Equalization

[E]

6 mm

6.00

+0.155 +0.065

7

±1.2--

35.5

±2

1/4 in

6.357±1.2--

Inlet [I]

6 mm

6.007±1.2----

1/4 in

6.357±1.2----

3/8 in

9.528±1.2----

10 mm

10.009±1.2----

1/2 in

12.7010±1.4----

Outlet [O]

3/8 in

9.528±1.2

38.5

±2

--12 mm

12.0010±1.4--

1/2 in

12.7010±1.4--

5/8 in

15.8812±1.4

41.5±2-

-

Thermostatic expansion valve, Type TU and TC

Figure 22: TCAE (incl. orice)

Dimensions

Figure 23: TUBE and TUCE

Table 7: Dimensions for TU and TC

[E]

[I]

[O]

L2 ([E]; [I]) L1 ([O])

L

Ø

D

Ø

D

Ø

D

(37,2)

(

2

1

,

5

)

(

3

1

,

8

)

(21)

(39)

Ø

(32,5)

18,5 ø1,6

12,5 ø1,6

(10,8)

(47)

(ø 14,4)

Con. / Dim.

Size

[øD]

[øD] tolerance

[L]

[L] tolerance

[L1] ([O])

[L1] tolerance

[L2] ([E]; [I])

[L2] tolerance

Equalization

[E]

6 mm

6.00

+0.155 +0.065

7

±1.2--

35.5

±2

1/4 in

6.357±1.2--

Inlet [I]

6 mm

6.007±1.2--

1/4 in

6.357±1.2--

3/8 in

9.528±1.2--

10 mm

10.009±1.2--

1/2 in

12.7010±1.4--

38.5

±2

Outlet [O]

3/8 in

9.528±1.2

38.5

±2

--12 mm

12.0010±1.4--

1/2 in

12.7010±1.4--

5/8 in

15.8812±1.4

41.5±2-

-

[I]

[O]

[E]

Ø

D

L

Ø

D

Ø

D

L

L1 ([O]) L2 ([E]; [I])

(ø14,4)

(37,2)

NV19

(ø39)

12,5 ø1,6

18,5 ø1,6

(49,3)

(31,8)

(10,8)

Con. / Dim.

Size

[øD]

[øD] tolerance

[L]

[L] tolerance

[L1] ([O])

[L1] tolerance

[L2] ([E]; [I])

[L2] tolerance

Equalization

[E]

6 mm

6.00

+0.155 +0.065

7

±1.2--

35.5

±2

1/4 in

6.357±1.2--

Inlet [I]

6 mm

6.007±1.2--

1/4 in

6.357±1.2--

3/8 in

9.528±1.2--

10 mm

10.009±1.2--

1/2 in

12.7010±1.4--

38.5

±2

Outlet [O]

3/8 in

9.528±1.2

38.5

±2

--12 mm

12.0010±1.4--

1/2 in

12.7010±1.4--

5/8 in

15.8812±1.4

41.5±2-

-

Thermostatic expansion valve, Type TU and TC

Figure 24: TUBE and TUCE

Table 8: Dimensions for TUBE and TUCE

Figure 25: TUAE

Table 9: Dimensions for TUAE

[I]

[O]

[E]

L

Ø

D

Ø

D

Ø

D

L

L1 ([O])

L2 ([E]; [I])

(31,2)

(10,8)

(69,5)

12,5 ø1,6

18,5 ø1,6

(ø14,4)

(21,5)

(32,5)(37,2)

(21)

Ø

(45)Ø

Con. / Dim.

Size

[øD]

[øD] tolerance

[L]

[L] tolerance

[L1] ([O])

[L1] tolerance

[L2] ([E]; [I])

[L2] tolerance

Equalization

[E]

6 mm

6.00

+0.155 +0.065

7

±1.2--

35.5

±2

1/4 in

6.357±1.2--

Inlet [I]

6 mm

6.007±1.2--

1/4 in

6.357±1.2--

3/8 in

9.528±1.2--

10 mm

10.009±1.2--

1/2 in

12.7010±1.4--

38.5

±2

Outlet [O]

3/8 in

9.528±1.2

38.5

±2

--12 mm

12.0010±1.4--

1/2 in

12.7010±1.4--

5/8 in

15.8812±1.4

41.5±2-

-

[O]

12,5 ø1,6

18,5 ø1,6

(69,5)

(31,2)

(29,9)

(10,8)

(ø14,4)

[I]

[E]

L

Ø

D

L

L1 ([O])

L2 ([E]; [I])

(37,2)

Ø45

NV 19

Ø

D

Ø

D

Thermostatic expansion valve, Type TU and TC

Figure 26: TCBE and TCCE

Table 10: Dimensions for TCBE and TCCE

Figure 27: TCAE

Con. / Dim.

Size

[øD]

[øD] tolerance

[L]

[L] tolerance

[L1] ([O])

[L1] tolerance

[L2] ([E]; [I])

[L2] tolerance

Equalization

[E]

6 mm

6.00

+0.155 +0.065

7

±1.2--

35.5

±2

1/4 in

6.357±1.2--

Inlet [I]

6 mm

6.007±1.2--

1/4 in

6.357±1.2--

3/8 in

9.528±1.2--

10 mm

10.009±1.2--

1/2 in

12.7010±1.4--

38.5

±2

Outlet [O]

3/8 in

9.528±1.2

38.5

±2

--12 mm

12.0010±1.4--

1/2 in

12.7010±1.4--

5/8 in

15.8812±1.4

41.5±2-

-

TUBE

Type (E = external pressure equalization)

068Uxxxx

Code number

R404A/R507

Refrigerant

MOP 55/+15°C

MOP-point in psig and °C (optional)

-40/+10°C

Evaporating temperature range in °C

-40/+50°F

Evaporating temperature range in °F

PS 34 bar/MWP 500 psig

Max. working pressure in bar and psig

N0619A

Date marking (N = Nordborg, week 06, year 2019, weekday A = Thursday)

Thermostatic expansion valve, Type TU and TC

Table 11: Dimensions for TCAE

Identication

Main valve data is given on the power element (Fig. 19 and 20), on the valve body (Fig. 21) and on the orice assembly (Fig. 22).

For valves and separate orices with bleed (optional), the bleed size is marked on the valve body or orice assembly respectively.

BP15 (= 15% bleed of nominal capacity).

For valves with xed superheat setting (types TUC, TUCE or TCCE), the static superheat is printed on the power element (e.g. SS 4°C/7.2°F).

All standard valves are marked with EAC, in case they need to be exported to Eurasia.

Figure 28: Power element, TUBE Figure 29: Power element, TCBE

Table 12: Power element, data example, Fig. 19 and 20:

Arrow

Normal ow direction

Inch

Connection in Inches (MM = millimeters)

BP15

15% bleed (optional)

Orice 1

Orice number 1

5.40 TR

Rated capacity Qnom, in tons of refrigeration

19.0 kW

Rated capacity Qnom, in kW

TU

Orice

for valve type (TUA or TCA)

5

Orice

assembly number

068Uxxxx

Code number,

orice with lter and gasket

0619

Date marking (week 06, year 19)

Thermostatic expansion valve, Type TU and TC

Figure 30: Valve body, TUBE and TCBE

Table 13: Valve body, data example, Fig. 21:

Figure 31: TUA / TCA

orice

Table 14: Orice assembly, data example (Fig. 22)

Refrigerant

Type

Orice No.

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R407C

TUBXInternal

1/4 x 1/2

-

6 x 12

-00--1-068U19012--3-068U19034-

068U19045-

068U1905

6

3/8 x 1/2

068U1890

068U19067--10 x 12

068U1907

TUBE

5

External

3/8 x 1/2

068U1897

6 x 12

068U1915

6

1/4 x 1/2

068U1936

068U1916

7

3/8 x 1/2

068U1937

10 x 12

068U1917

8

068U1938

068U1918

9

068U1939

-

R410A

TUBXInternal

-

---00---

1

1/4 x 1/2

068U1958-2

068U1959-3

068U1960-4

068U1961-5

068U1962-6

068U1963-7

3/8 x 1/2

068U1964

-

TUBE

5

External

1/4 x 1/2

068U1971

6 x 12

068U1953

6

068U1972

068U1954

7

3/8 x 1/2

068U1973

10 x 12

068U1955

8

068U1974

068U1956

9

068U1975

068U1957

Thermostatic expansion valve, Type TU and TC

Ordering

Figure 32: TUB Figure 33: TUBE

Table 15: Angle, TUB_TUBE: Range N = -40 – +10 °C / -40 – +50 °F

Refrigerant

Type

Orice No.

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R134a

TUBXInternal

----00----

1

1/4 x 1/2

068U2027

6 x 12

068U2000

2

068U2028

068U2001

3

068U2029

068U2002

4

068U2030

068U2003

5

068U2031

068U2004

6

068U2032

068U2005

7

3/8 x 1/2

-

10 x 12

068U2006

TUBE

5

External

1/4 x 1/2

068U2022

6 x 12

068U2013

6

068U2023

068U2014

7

3/8 x 1/2

068U2024

10 x 12

068U2015

8

068U2025

068U2016

9

068U2026

068U2017

R290

TUBXInternal

1/4 x 1/2

-

6 x 12

-00--1

068U3731-2

068U3732-3

068U3733-4

068U3735

068U37445-

068U38316-

068U37457-

-

TUBE

5

External

1/4 x 3/8

068U3706

6 x 12

068U3717

6

068U3707

068U3718

7

068U3708

068U3719

8

3/8 x 1/2

068U3709

10 x 12

068U3720

9

068U3710

068U3721

R404A / R507A

TUBXInternal

1/4 x 1/2

-

6 x 12

-00--1

068U2094

068U2076

2

068U2095

068U2077

3

068U2096

068U2078

4

068U2097

068U20795-

068U2080

6

068U2099

068U2081

7

3/8 x 1/2

068U2100

10 x 12

068U2082

TUBE

5

External

1/4 x 1/2

068U2107

6 x 12

068U2089

6

068U2108

068U2090

7

3/8 x 1/2

068U2109

10 x 12

068U2091

8

068U2110

068U2092

9

068U2111

068U2093

Thermostatic expansion valve, Type TU and TC

Figure 34: TUB Figure 35: TUBE

Refrigerant

Type

Orice No.

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R407C

TUB7Internal

3/8 x 1/2

068U2647--

TUBE

5

External

1/4 x 1/2

068U2655

6 x 12

-6-

068U2636

7

3/8 x 1/2

068U2657

10 x 12

068U2637

8

068U2658

068U2638

9

068U2659

-

R410A

TUBE

6

External

1/4 x 1/2

---

7

3/8 x 1/2

--8--9068U3316

-

R134a / R513A

TUBXInternal

1/4 x 3/8

-

6 x 12

-00--1

068U3656

068U25402--3-068U2542

4

1/4 x 1/2

068U2561

068U25435-

068U25446--7

3/8 x 1/2--

TUBE

5

External

3/8 x 1/2

068U3498

10 x 12

-6068U3818-7

068U2573

068U2555

8

068U2574-9

068U2575

-

R290

TUBXInternal

1/4 x 3/8

068U3700

6 x 12

068U3711

00

068U3701

068U3712

R404A / R507A

TUBXInternal

1/4 x 1/2

-

6 x 12

-00--1

068U2594

068U34952--3--4-

068U25795--6--73/8 x 1/2

-

10 x 12

-

TUBE

5

External

1/4 x 1/2

068U2607--6068U2608-7

3/8 x 1/2

068U2609--8068U2610-9

068U2611

-

Thermostatic expansion valve, Type TU and TC

Table 16: Straight, TUB_TUBE, Range N = -40 – +10 °C / -40 – +50 °F

Figure 36: TCBE

Refrigerant

Type

Orice No.

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R407C

TCBE1External

1/2 x 5/8

068U4257

12 x 16

068U4249

2

068U4258

068U4250

3

068U4251

068U4259

R410A

TCBE1External

1/2 x 5/8

068U4265

12 x 16

068U4273

2

068U4266

068U4274

3

068U4267

068U4275

R134a / R513A

TCBE1External

1/2 x 5/8

068U4217

12 x 16

068U4225

2

068U4218

068U4226

3

068U4219

068U4227

R404A / R507A

TCBE1External

1/2 x 5/8

-

12 x 16

068U4241

2

068U4234

068U4242

3

068U4235

068U4243

R290

TCBE1External

3/8 x 5/8

068U4383

10 x 16

068U4386

2

1/2 x 5/8

068U4384

12 x 16

068U4387

3

068U4385

068U4388

Range N MOP 95 psig / +15 °C

R407C

TCBE1External

1/2 x 5/8

068U4253

12 x 16

068U4261

2

068U4254

068U42623-

068U4263

Range N MOP 165 psig / +15 °C

R410A

TCBE1External

1/2 x 5/8

-

12 x 16

-2068U4270-3-068U4279

Range N MOP 55 psig / +15 °C

R134a/R513A

TCBE1External

-

10 x 16

068U42282-

12 x 16

068U42303-

068U4231

Range N MOP 120 psig / +15 °C

R404A / R507A

TCBE1External

-

10 x 16

068U42442-

12 x 16

068U42463-

068U4247

Refrigerant

Type

Range

MOP

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R407C

TUA

N

-

Internal

1/4 x 1/2

068U2324

06 x 12

068U2320N-

3/8 x 1/2

068U2325

10 x 12

068U2321

N MOP

95 psig / +15 °C

1/4 x 1/2

068U2332--

N MOP

95 psig / +15 °C

3/8 x 1/2

068U2333--

TUAE

N

-

External

1/4 x 1/2

068U2326

06 x 12

068U2322N-

3/8 x 1/2

068U2327

10 x 12

068U2323

N MOP

95 psig / +15 °C

--06 x 12

068U2330

N MOP

95 psig / +15 °C

3/8 x 1/2

068U2335

10 x 12

068U2331

Thermostatic expansion valve, Type TU and TC

Table 17: Straight, TCBE, Range N = -40 – +10 °C / -40 – +50 °F

Figure 37: TUA Figure 38: TUAE

Table 18: Straight, TUA_TUAE, Range N = -40 – +10 °C / -40 – +50 °F

Refrigerant

Type

Range

MOP

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R410A

TUAN-

Internal

3/8 x 1/2

068U2414--

TUAE

N

-

External

--10 x 12

068U2780

N MOP

165 psig / +15 °C

3/8 x 1/2

068U2939--

B MOP

55 psig / -15 °C

--10 x 12

068U2450

R134a

TUA

N

-

Internal

1/4 x 1/2

068U2204

6 x 12

068U2200N-

3/8 x 1/2

068U2205

10 X 12

068U2201

N MOP

55 psig / +15 °C

1/4 x 1/2

068U2212

6 x 12

068U2208

N MOP

55 psig / +15 °C

3/8 x 1/2

068U2213--

TUAE

F

-

External

1/4 x 1/2

068U1256--F-

3/8 x 1/2

068U1257--N-

1/4 x 1/2

068U2206

6 x 12

068U2202N-

3/8 x 1/2

068U2207

10 X 12

068U2203

N MOP

55 psig / +15 °C

1/4 x 1/2

068U2214--

N MOP

55 psig / +15 °C

3/8 x 1/2

068U2215

10 X 12

068U2211

R404A / R507A

TUA

N

-

Internal

1/4 x 1/2

068U2284

6 x 12

068U2280N-

3/8 x 1/2

068U2285

10 x 12

068U2281

N MOP

120 psig / +15 °C

1/4 X 1/2

068U2292--

N MOP

120 psig / +15 °C

3/8 x 1/2

068U2293--NM75 psig / 0°C

1/4 X 1/2

068U2300

6 x 12

068U2296B-

1/4 x 1/2

068U2308--B-v

3/8 x 1/2

068U2309--

B MOP

30 psig / -20 °C

1/4 x 1/2

068U2316

6 x 12

068U2312

B MOP

30 psig / -20 °C

3/8 x 1/2

068U2317--

TUAE

F

-

External

1/4 x 1/2

068U1252--F-

3/8 x 1/2

068U1253--N-

1/4 x 1/2

068U2286

6 x 12

068U2282N-

3/8 x 1/2

068U2287

10 x 12

068U2283

N MOP

120 psig / +15 °C

3/8 x 1/2

068U2295-NL

50 psig / -10 °C

1/4 x 1/2

068U2931--

B MOP

30 psig / -20 °C

1/4 x 1/2

068U2318

-

B MOP

30 psig / -20 °C

3/8 x 1/2

068U2319

10 x 12

068U2315

R407A

TUAE

F

-

External

1/4 x 1/2

068U1258--F-

3/8 x 1/2

068U1259--

R407F

TUAE

F

-

External

1/4 x 1/2

068U1250--F-

3/8 x 1/2

068U1251--

R134a / R513A

TUAE

F

-

External

1/4 x 1/2

068U1256--F-

3/8 x 1/2

068U1257--

R448A

TUAE

F

-

External

1/4 x 1/2

068U3772--F-

3/8 x 1/2

068U3773--

R449A

TUAE

F

-

External

1/4 x 1/2

068U3776--F-

3/8 x 1/2

068U3858--

R454C

TUA--

Internal

1/4 x 1/2

068U3948----

6 x 12

068U3949

TUAE--

External

1/4 x 1/2

068U3950----

6 x 12

068U3951

R455A

TUA--

Internal

1/4 x 1/2

068U3952----

6 x 12

068U3953

TUAE--

External

1/4 x 1/2

068U3954----

6 x 12

068U3955

R1234yf

TUA--

Internal

1/4 x 1/2

068U3956----

6 x 12

068U3957

TUAE--

External

1/4 x 1/2

068U3958----

6 x 12

068U3959

R1234ze(E)

TUA--

Internal

1/4 x 1/2

068U3960----

6 x 12

068U3962

TUAE--

External

1/4 x 1/2

068U3961----

6 x 12

068U3964

Thermostatic expansion valve, Type TU and TC

Refrigerant

Type

Range

MOP

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R454A

TUA--

Internal

1/4 x 1/2

068U3963----

6 x 12

068U3966

TUAE--

External

1/4 x 1/2

068U3965----

6 x 12

068U3970

Refrigerant

Type

Range

MOP

Pressure eq.

Connection (in x out)

inch

Code No.

mm

Code No.

R407C

TCAE

N

-

External

3/8 x 5/8

068U4324

10 x 16

068U4328N-

1/2 x 5/8

068U4325

12 x 16

068U4329

N MOP

95 psig / +15 °C

3/8 x 5/8

068U4326--

N MOP

95 psig / +15 °C

1/2 x 5/8

068U4327

12 x 16

068U4331

R410A

TCAE

N

-

External

3/8 x 5/8

068U4336--N-

1/2 x 5/8

068U4337

12 x 16

068U4341

N MOP

165 psig / +15 °C

068U4339

12 x 16

068U4343

R134a/R513A

TCAE

N

-

External

3/8 x 5/8

068U4292

10 x 16

068U4296N-

1/2 x 5/8

068U4293

12 x 16

068U4297

N MOP

55 psig / +15 °C

068U4295

12 x 16

068U4299

R404A / R507A

TCAE

N

-

External

3/8 x 5/8

068U4304

10 x 16

068U4308N-

1/2 x 5/8

068U4305

12 x 16

068U4309

N MOP

120 psig / +15 °C

068U4307

10 x 16

068U4310B-

068U4317

12 x 16

068U4321

B MOP

30 psig / -20 °C

068U4319

10 x 16

068U4322

R448A

TCAE

N

-

External

1/2 x 5/8

068U4598--

R449AN-

068U4599--

Thermostatic expansion valve, Type TU and TC

Figure 39: TCAE

Table 19: Straight, TCAE, Range N = -40 – +10 °C / -40 – +50 °F

Type

Orice No.

Bleed

Code No.

TUA / TUAE

0-068U10301-

068U1031

1

15%

068U11312-

068U1032

2

15%

068U11323-

068U1033

3

15%

068U11334-

068U1034

4

15%

068U11345-

068U1035

5

15%

068U11356-

068U1036

6

15%

068U11367-

068U1037

7

15%

068U11378-

068U1038

8

15%

068U11389-

068U1039

9

15%

068U 1139

TCAE

1-068U4100

1

15%

068U40972-

068U4101

2

15%

068U40983-

068U4202

3

15%

068U4099

Code no.

Description

Pack mode

Quantity / pack

068U3505

Bulb strap 0.4 mm Max. 28 mm tube

I

45

068U3506

Bulb strap 0.4 mm Max. 50 mm tube

I

45

068U3507

Bulb strap 0.4 mm Max. 28 mm tube

M

25

068U3508

Bulb strap 0.4 mm Max. 50 mm tube

M

25

Code no.

Description

Pack mode

Quantity / pack

068U3509

OEM bulb strap 3/8 in tube

I

45

068U3510

OEM bulb strap 1/2 in tube

I

45

068U3511

OEM bulb strap 5/8 in tube

I

45

Thermostatic expansion valve, Type TU and TC

Table 20: TUA / TUAE and TCAE, orice assembly With inlet screen and gasket

Accessories and spare parts

Figure 40: Bulb strap

Table 21: Bulb strap for TU, TC, T2

Figure 41: OEM bulb strap

Table 22: Bulb strap for TU, TC, T2

IMIndustrial pack (OEM)

Multipack (Wholesaler)

Code no.

Description

Pack mode

Quantity pack

068U1706

Inlet screen TUA/TUAE 0 - 4

Industrial packing

24

068U0016

Inlet screen TUA/TUAE 5 - 9, TCAE 1 - 3

Industrial packing

24

068U0015

Gasket

Industrial packing

24

Thermostatic expansion valve, Type TU and TC

Figure 42: Spare parts TUA / TUAE and TCAE

Table 23: TUA / TUAE and TCAE

NOTE:



To secure tightness, the orice gasket must be changed each time the orice is disassembled

Document name

Document type

Document topic

Approval authority

RU Д-DK.БЛ08.В.00191_18

EAC Declaration

Machinery & Equipment

EAC

068U9615.06

Manufacturers Declaration

PED/RoHS

Danfoss

068U9616.01

Manufacturers Declaration

China RoHS

Danfoss

068U9903.01

EU Declaration

RoHS

Danfoss

Thermostatic expansion valve, Type TU and TC

Certicates, declarations, and approvals

The list contains all certicates, declarations, and approvals for this product type. Individual code number may have some or all of these approvals, and certain local approvals may not appear on the list.

Some approvals may change over time. You can check the most current status at danfoss.com or contact your local Danfoss representative if you have any questions.

Table 24: Certicates, declarations, and approvals

Online support

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Find technical documentation

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Start searching now at www.danfoss.com/en/service-and-support/documentation.

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Coolselector®2 - nd the best components for you HVAC/R system

Coolselector®2 makes it easy for engineers, consultants, and designers to nd and order the best components for refrigeration and air conditioning systems. Run calculations based on your operating conditions and then choose the best setup for your system design.

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Danfoss TUB, TUBE, TCBE, TUC, TUCE Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual