ANSI PTFE Expansion Joints, 4 convolutes (Class 150) – new design

Our PTFE Expansion Joints are highly flexible and provide compensation of vibrations and heat-induced expansion in your production line. The possible absorption of movement is increased by a higher number of convolutes.

Designs:

  • up to nominal pipe size NPS 4“ with two ears
  • from nominal pipe size NPS 5“ with three ears
  • up to nominal pipe size NPS 2 1/2” with threaded holes
  • from nominal pipe size NPS 3” with through holes

Flange materials:

  • carbon steel
  • stainless steel

Lining material:

  • PTFE (virgin or conductive)

Flanges:

  • loose-loose

Other pressure ratrings:

  • on request

Special features:

  • limit bolts/hole extensions
  • earthing stud/lug

Optional extras:

  • final painting

NPS

 

 

L

 

(mm)

Stroke

±

(mm)

Lateral

offset

(mm)

Angular offset

 

max. (°)

d4

 

(mm)

K

 

(mm)

smin

 

(mm)

a2

 

(mm)

No. of bolts

x

thread (UNC)

Weights

 

(ca. kg/pc.)

½“

85

13

6

8

34.9

60.3

3.0

13.0

4 x ½“

1.1

¾“

85

13

6

8

42.9

69.9

3.0

13.0

4 x ½“

1.3

1“

85

13

6

8

50.8

79.4

3.0

13.0

4 x ½“

1.6

1¼“

90

13

6

8

63.5

88.9

3.0

13.0

4 x ½“

1.8

1½“

98

18

6

8

73.0

98.4

3.0

13.0

4 x ½“

2.1

2“

105

20

10

9

92.1

120.7

4.0

16.0

4 x ⅝“

3.4

2½“

122

25

10

10

104.8

139.7

4.0

16.0

4 x ⅝“

4.3

3“

135

26

12

11

127.0

152.4

4.0

16.0

4 x ⅝“

5.2

4“

137

33

15

13

157.2

190.5

5.0

20.0

8 x ⅝“

8.2

5“

145

33

15

13

185.7

215.9

4.5

19.5

8 x ¾“

10.5

6“

155

33

15

12

215.9

241.3

5.0

23.0

8 x ¾“

13.6

8“

175

40

18

10

269.9

298.5

5.0

25.0

8 x ¾“

22.2

10“

195

40

18

10

323.8

362.0

7.5

29.5

12 x ⅞“

30.7

12“

215

45

18

9

381.0

431.8

6.0

31.0

12 x ⅞“

51.7

14“

235

50

22

8

412.8

476.3

7.5

37.5

12 x 1“

70.0

16“

235

50

22

8

469.9

539.8

7.5

37.5

16 x 1“

84.7

20“

235

50

22

6

584.2

635.0

8.0

38.0

20 x 1⅛“

102.2

NPS

 

 

Overpressure resistance

(105 Pa) at

Vacuum resistance

(105 Pa) at

23° C

100° C

150° C

200° C

23° C

100° C

150° C

200° C

½“

10.0

7.4

5.1

3.0

-1.00

-1.00

-1.00

-1.00

¾“

10.0

7.4

5.1

3.0

-1.00

-1.00

-1.00

-1.00

1“

10.0

7.4

5.1

3.0

-1.00

-1.00

-1.00

-1.00

1¼“

10.0

7.4

5.1

3.0

-1.00

-1.00

-1.00

-1.00

1½“

10.0

7.4

5.1

3.0

-1.00

-1.00

-1.00

-1.00

2“

10.0

7.4

5.1

3.0

-1.00

-1.00

-1.00

-1.00

2½“

8.5

6.9

5.1

3.0

-1.00

-0.99

-0.98

-0.96

3“

8.0

6.6

4.9

2.9

-0.97

-0.96

-0.94

-0.93

4“

7.4

6.2

4.6

2.7

-0.96

-0.92

-0.89

-0.86

5“

6.8

5.7

4.3

2.5

-0.93

-0.88

-0.82

-0.77

6“

6.1

5.2

4.0

2.2

-0.91

-0.84

-0.77

-0.68

8“

5.1

4.5

3.4

1.8

-0.86

-0.77

-0.66

-0.54

10“

4.1

3.8

2.8

1.5

-0.81

-0.69

-0.56

-0.40

12“

3.3

3.0

2.4

1.1

-0.76

-0.62

-0.48

-0.28

Different nominal pipe sizes

and total lengths on request.

L = Total length

d4 = Raised face diameter

K = Bolt circle diameter

smin = Minimum flare thickness

a2 = Minimum length with loose flange and smin

Technical data valid for the pressure rating Class 150.
a
2 depends on construction type and lining thickness.


The overpressure resistance is only valid at neutral position of the PTFE Expansion Joint with limit bolts in place. The types of travel stroke, lateral offset and angular offset are maximum allowable movements in only one direction. For superpositioned movement the single types of travel need to be limited. The figures stated are average and apply to room temperature.