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Expansion Joints

Size

DN20 to DN2000

Rubber Material

EPDM,NBR,NR

Flange Standard

ANSI,DIN,JIS,BS

Work pressure

PN6-PN25

Work Temp

-20℃+140℃


Rubber expansion joints are used in heating, ventilation and air conditioning systems, power plants, refineries, chemical plants, shipbuilding and many other industries. Beyond high extensibility they are characterized by a high movement absorption and excellent noise reduction. According to the expansion joints application there are different kinds of rubber. Fabrics of synthetic fibers are used as the pressure medium. Flanged connections are self-sealing.

expansion joints


ITEM

DESCRIPTION

1

Rubber bellows

2

Flanges

3

Reinforcement ring

4

Loose bracket

5

Tie rods

6

Nuts

7

Spherical washers


Features

Transportation or piping systems that carry fluids, slurries or gasses under pressure or vacuum at varying temperatures.

Reduction of vibration.

Dampen sound transmission.

Compensate movements due thermal changes, misalignments caused by wear, load stresses, settling of supporting foundations.

Molding production with long radius arch.

Standard measures (length).

 

Advantages

Easy installation, flanges can be rotated.

For installation with “torsional misalignments”.

Flanges are not in contact with medium, which enables lower grade material.

Galvanic surfaces/ coatings possible.

Gaskets can be eliminated.

Additional movement capabilities.

Self cleaning arch (no need filler material).

Economic.

Main connecting dimension of rubber expansion joint

Nominal diameter(DN)

Length

Axial displacement

Horizontal displacement

Deflexion angle

mm

inch

mm

Extension(mm)

Compression(mm)

mm

(a1+a2)°

32

1 1/4

95

6

9

9

15°

40

1 1/2

95

6

10

9

15°

50

2

105

7

10

10

15°

65

2 1/2

115

7

13

11

15°

80

3

135

8

15

12

15°

100

4

150

10

19

13

15°

125

5

165

12

19

13

15°

150

6

180

12

20

14

15°

200

8

210

16

25

22

15°

250

10

230

16

25

22

15°

300

12

245

16

25

22

15°

350

14

255

16

25

22

15°

400

16

255

16

25

22

15°

450

18

255

16

25

22

15°

500

20

255

16

25

22

15°

600

24

260

16

25

22

15°

700

28

260

16

25

22

15°

800

32

260

16

25

22

15°

900

36

260

16

25

22

15°

1000

40

260

18

26

24

15°

1200

48

260

18

26

24

15°

1400

56

350

20

28

26

15°

1600

64

350

25

35

30

10°

1800

72

350

25

35

30

10°

2000

80

420

25

35

30

10°

2200

88

420

25

35

30

10°

2400

96

420

25

35

30

10°

2600

104

450

25

35

30

10°

2800

112

450

25

35

30

10°

3000

120

500

25

35

30

10°