Danfoss TEAT 20, TEAT 85 Data sheet

Data Sheet

Desuperheating valve Type TEAT

Used to inject refrigerant into the suction line of the refrigeration system

Refrigerant injection into the suction line

TEAT valves are used to inject refrigerant into the suction line of the refrigeration system to reduce the high discharge temperatures that can occur when the system operates with highly superheated suction vapour.

This applies when, for example:

• A compressor runs either with low suction pressure or with high condensing temperature

• A compressor runs with both low suction pressure and high condensing temperature. This applies especially to systems with R 22

• A compressor receives highly superheated suction vapour

• A compressor runs with capacity regulation by hot gas bypass

Two-stage refrigeration plant

TEAT valves are also used in two-stage refrigeration plant to control liquid injection into the intercooler. The bulb is installed on the discharge line from the highpressure compressor. The theoretically obtainable discharge temperature for given operating conditions can be found in the h, log p diagram for the refrigerant concerned.

Temperature regulation of the medium

TEAT valves have a further application: the temperature regulation of the medium, e.g. the temperature of the oil in a screw compressor.

AI172886419299en-000501

Desuperheating valve, Type TEAT

Features

• Refrigerants Applicable to HCFC, non ammable HFC and R717 (Ammonia)

• Regulation ranges: See ordering table

• Classication: DNV, CRN, BV, EAC etc. To get an updated list of certication on the products please contact your local Danfoss Sales Company

Desuperheating valve, Type TEAT

Functions

Figure 1: TEAT

Temperature variations in the discharge pipe where the bulb is placed act on the thermal charge in the bulb (12). This changes the pressure in the thermostatic element (1) and thus gives modulating liquid injection.

If leakage in the thermostatic element does occur, it will not result in refrigerant loss.

The thermostatic element is screwed to the intermediate section (11) of the valve. A bellow on the intermediate section means that the suction pressure cannot inuence the valve setting.

The movement of the setting spindle (4) is transferred through a gearwheel mechanism.

The orice assembly (2) is identical to that of TEA thermostatic expansion valves.



NOTE:

The TEAT is not able to close completely tight, so a solenoid valve is needed to shut o liquid supply, when the system stops.

Desuperheating valve, Type TEAT

Media

Refrigerants

Applicable to HCFC, non ammable HFC and R717 (Ammonia).

New refrigerants

Danfoss products are continually evaluated for use with new refrigerants depending on market requirements.

When a refrigerant is approved for use by Danfoss, it is added to the relevant portfolio, and the R number of the refrigerant (e.g. R513A) will be added to the technical data of the code number. Therefore, products for specic refrigerants are best checked at store.danfoss.com/en/, or by contacting your local Danfoss representative.

Description

Values

P band

20 °C

Capillary tube length

5 m

Max. bulb temperature

150 °C

Max. working pressure

PS = 20 bar

Max. test pressure

p' = 30 bar

Desuperheating valve, Type TEAT

Product specications

Pressure and temperature data

Table 1: Pressure and temperature data

Design

Materials

• Valve housing made of GGG40.3

• Gaskets are non asbestos

Identication

Figure 2: Element label

The thermostatic element

Has a label giving valve type, temperature range and max. test pressure.

Figure 3: Orice assembly marking

The orice assembly

Is common to TEAT, TEA and TEVA. The rated capacity, e.g. 8 TR (= 28 kW) for the refrigerant ammonia is given on the orice assembly.

The orice assembly can be used for both ammonia and uorinated refrigerants.

123411

12

Thermostatic element (diaphragm)

Orice assembly

Valve body

Setting spindle

Intermediate section

Bulb

Type and rated capacity (TR)

Rated capacity in kW

(1)

at Δp = 8 bar

R717 (NH

3

)

R22

R134a

R404A

R12

R502

TEAT 20-1

3.3

0.8

0.7

0.6

0.5

0.6

TEAT 20-2

6.4

1.5

1.2

1.1

0.9

1.1

TEAT 20-3

9.7

2.3

1.7

1.6

1.3

1.6

TEAT 20-5

16

3.632.9

2.3

2.7

TEAT 20-8

25.6

6.2

4.6

4.4

3.5

4.4

TEAT 20-12

38.4

9.2

6.9

6.7

5.3

6.5

TEAT 20-20

64

15.4

13.1

12.61010.8

TEAT 85-33

1062619.5

18.8

14.9

18

TEAT 85-55

173

42.4

31.8

30.6

24.3

27.4

TEAT 85-85

274

66.3

50.3

48.4

38.4

46.5

(1)

Valve size

Pressure drop across valve Δp bar

4681115

20 - 1

2.3

2.8

3.3

3.6

4.7

20 - 2

4.8

5.7

6.4

7.2

7.9

20 - 3

7.2

8.5

9.7

10.8

11.7

20 - 5

12.1

14.21618

19.8

20 - 8

18.6

22.1

25.6

28.5

31.4

20 - 12

29.1

33.7

38.44347.1

20 - 20

47.75764

72.1

79.1

Desuperheating valve, Type TEAT

Material specication

Figure 4: TEAT

Rated capacity in kW

Table 2: Rated capacity in kW

(1)

Rated capacity is valve capacity at +5 °C evaporating temperature, and 4K subcooling of the liquid in front of the valve.



NOTE:

Subcooling of the liquid in front of the valve is essential for the function of the valve. Lack of subcooling will lead to malfunction of the valve and increased wear on orice.

Extended capacities in kW

Table 3: Extended capacities in kW R717

(1)

Valve size

Pressure drop across valve Δp bar

4681115

85 - 33

80.2

94.2

106.4

118.6

130.3

85 - 55

136.1

157

176.8

197.7

215.2

85 - 85

203.5

239.6

274.5

302.4

334.9

(2)

Valve size

Pressure drop across valve Δp bar

4681115

20 - 1

0.6

0.7

0.8

0.9

1

20 - 2

1.2

1.4

1.5

1.7

1.9

20 - 3

1.722.3

2.6

2.9

20 - 5

2.7

3.1

3.644.8

70 - 8

4.4

5.2

6.2

6.9

7.6

20 - 12

7

8.1

9.2

10.4

11.3

20 - 20

11.5

13.7

15.4

17.2

18.8

85 - 33

19.3

22.4

25.6

28.5

31.4

85 - 55

32.6

37.8

42.4

47.7

52.3

85 - 85

48.8

58.2

66.3

72.1

81.4

120

Type

H1 [mm]

H2 [mm]

H3 [mm]

H4 [mm]

L

B [mm]

Weight

Excl. strainer

[mm]

Incl. strainer

[mm]

Excl. strainer

[kg]

Incl. strainer

[kg]

TEAT 20

121.5372596110

164802.1

3

TEAT 85

131.53735

106

125

199953

4.5

Desuperheating valve, Type TEAT

(1)

The rated capacity is valve capacity at +5 °C evaporating temperature, +32 °C condensing temperature and 4K subcooling of the liquid in front

The rated capacity is valve capacity at +5 °C evaporating temperature, +32 °C condensing temperature and 4K subcooling of the liquid in front of the valve

of the valve

Table 4: Extended capacities in kW R22

(2)

The rated capacity is valve capacity at +5 °C evaporating temperature, +32 °C condensing temperature and 4K subcooling of the liquid in front

The rated capacity is valve capacity at +5 °C evaporating temperature, +32 °C condensing temperature and 4K subcooling of the liquid in front of the valve

of the valve

Dimensions and weights

Figure 5: Dimensions and weights

Table 5: Dimensions and weights

Type and rated capacity (TR)

Regulating range °C

Flange connection

Code no.

Assembled valve

Separate orice

assembly

Separate thermostatic

element

TEAT 20-1

35 - 65

½ × ½

(1)

068G2050

068G3262

55 - 95

½ × ½

(1)

068G2050

068G3260

90 - 130

½ × ½

(1)

068G2050

068G3261

TEAT 20-2

35 - 65

½ × ½

068G6125

068G2051

068G3262

55 - 95

½ × ½

068G6062

068G2051

068G3260

90 - 130

½ × ½

068G6065

068G2051

068G3261

TEAT 20-3

35 - 65

½ × ½

(1)

068G2052

068G3262

55 - 95

½ × ½

(1)

068G2052

068G3260

90 - 130

½ × ½

(1)

068G2052

068G3261

TEAT 20-5

35 - 65

½ × ½

068G6126

068G2053

068G3262

55 - 95

½ × ½

068G6061

068G2053

068G3260

90 - 130

½ × ½

068G6127

068G2053

068G3261

TEAT 20-8

35 - 65

½ × ½

068G6128

068G2054

068G3262

55 - 95

½ × ½

068G6063

068G2054

068G3260

90 - 130

½ × ½

068G6066

068G2054

068G3261

TEAT 20-12

35 - 65

½ × ½

(1)

068G2055

068G3262

55 - 95

½ × ½

(1)

068G2055

068G3260

90 - 130

½ × ½

(1)

068G2055

068G3261

TEAT 20-20

35 - 65

½ × ½

068G6068

068G2056

068G3262

55 - 95

½ × ½

068G6064

068G2056

068G3260

90 - 130

½ × ½

068G6067

068G2056

068G3261

TEAT 85-33

35 - 65

¾ × ¾

068G6129

068G2057

068G3262

55 - 95

¾ × ¾

068G6070

068G2057

068G3260

90 - 130

¾ × ¾

068G6072

068G2057

068G3261

TEAT 85-55

35 - 65

¾ × ¾

068G6130

068G2058

068G3262

55 - 95

¾ × ¾

068G6073

068G2058

068G3260

90 - 130

¾ × ¾

068G6131

068G2058

068G3261

TEAT 85-85

35 - 65

¾ × ¾

068G6069

068G2059

068G3262

55 - 95

¾ × ¾

068G6071

068G2059

068G3260

90 - 130

¾ × ¾

068G6132

068G2059

068G3261

Desuperheating valve, Type TEAT

Ordering

Figure 6: TEAT

Table 6: Ordering

(1)

This valve size must be ordered as a complete valve + a separate orice assemble in the required size.

This valve size must be ordered as a complete valve + a separate orice assemble in the required size. Example: TEAT 20-3 must be ordered as 068G6125 + 068G2052.

Example: TEAT 20-3 must be ordered as 068G6125 + 068G2052. The orice in the complete TEAT 20-2 valve must then be changed with the separate orice assemble.

The orice in the complete TEAT 20-2 valve must then be changed with the separate orice assemble.



Separate lter with gaskets, staybolts and nuts

for TEAT 20, code no. 006-0042 for TEAT 85, code no. 006-0048. Stainless steel bulb pocket, gasket, and union nut, code no. 993N3615, for screwing into G ½ socket welded to tube or tank.

NOTE:

Type

File name

Document type

Document topic

Approval authority

TEAT

EAC RU Д-DK.БЛ08.В.00191_18

EAC Declaration

Machinery & Equipment

EAC RU

MD 033F0691.AE

Manufacturers Declaration

RoHS

033F0686.AG

Manufacturers Declaration

PED

RMRS 19.10034.262

Marine - Safety Certicate

RMRS

TEAT 20

TSSA CRN.0C14029.523467890YTN

Pressure - Safety Certicate

CRN

TSSA

TEAT 85

TSSA CRN.0C14029.523467890YTN

Pressure - Safety Certicate

CRN

TSSA

Desuperheating valve, Type TEAT

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 7: Valid approvals

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Danfoss TEAT 20, TEAT 85 Data sheet

Specifications and Main Features

Frequently Asked Questions

User Manual