Lett Air Conditioner Service Valve

Service Valve is suitable for airconditioner which works with R22, R407C, R410A as a refrigerant. Service Valve can be a checking valve to drain air and add refrigerant during maintaining, also be used in other refrigerating circle systems.

Product Description

Function :

A/C service valve is the important component in split air conditioner, it is used to connect the outdoor unit and indoor unit, open and close refrigerant circuit, vacuumize and recharging.

Feature :

1. Connecting the outdoor unit and indoor unit, take the on-off action.

2. Easy operate.

3. Soft seal and rigidity seal ensure the air tightness.

4. Different sealing O-rings, available for different refrigerant.

5. Special design to prevent the valve stem from flying off.

Technical parameters :

1. Applicable refrigerants : freon like R134a, R22, R407C, R410A, R404A.

2. Appliable medium temperature : -30 ºC ~ +120 ºC

3. Max working pressure : 4.2MPa

Structure :

1

Valve cap
2 Stop collar
3 O-ring
4 Valve stem
5 Sealing cap
6 Nuts
7 Valve body
8 Copper tube
9 Dust-proof cap
10 Valve core
11 Swivel nut

Specification :

Code

Tube size
(mm)

Nominal D
(mm)

Sealing D
(mm)

Thread

Thread of
valve cap

Thread of
charging port

DG4

Φ6.35(Φ6)

Φ4.8

Φ7.5

7/16-20UNF-2A

M16×1

DG8

Φ9.52(Φ10)

Φ8

Φ7.5

5/8-18UNF-2A

M16×1

7/16-20UNF-2A

1/2-20UNF-2A

DG10

Φ12.7(Φ12)

Φ10

Φ9.5

3/4-16UNF-2A

M18×1

DG13

Φ15.88(Φ16)

Φ13

Φ12.5

7/8-14UNF-2A

M22×1

DG16

Φ19

Φ16

Φ15.5

1-1/16-14UNS-2A

M25×1

DG20

Φ22.2(Φ22)

Φ19

Φ19

1-1/4-12UN-2A

M30×1

Overall dimension :

Code

A

(mm)

B

(mm)

C

(mm)

H

(mm)

L

(mm)

S

(mm)

N

(mm)

DG4

23.5

38

15

33

S17

DG8

25.5

27.5

38

15

36.2

S22

S14/S17

DG10

29.5

28.5

38

18

42

S24/S26

S14/S17

DG13

34

30

44

18

46

S27/S29

S14/S17

DG16

40

31.5

44

22

54

S32

S14/S17

DG20

43

34

54

28

65

S40

S14/S17

Note : The length of the copper tube can be customized.