ANSI PTFE Vacuum Expansion Joints (Class 150)

PTFE Vacuum Expansion Joints allow full vacuum, also in case of large nominal widths and high temperatures.

Flange materials:

  • carbon steel
  • stainless steel

Lining material:

  • PTFE (virgin or conductive)

Flanges:

  • loose-loose

Other pressure ratings:

  • on request

Special features:

  • limit bolts/hole extensions
  • earthing stud/lug

Optional extras:

  • final painting

NPS

 

 

L

 

(mm)

Stroke

±

(mm)

D

 

(mm)

d4

 

(mm)

K

 

(mm)

smin

 

(mm)

a2

 

(mm)

No. of bolts

x

thread (UNC)

Weights

 

(ca. kg/pc.)

4“

95

10

302

157.2

190.5

7.5

23.5

8 x ⅝“

15.7

6“

100

15

350

215.9

241.3

7.5

25.5

8 x ¾“

20.0

8“

105

15

422

269.9

298.5

7.5

27.5

8 x ¾“

29.7

10“

110

18

476

323.8

362.0

7.5

29.5

12 x ⅞“

37.6

12“

115

18

535

381.0

431.8

7.5

32.5

12 x ⅞“

57.4

14“

120

18

590

412.8

476.3

7.5

32.5

12 x 1“

66.8

16“

135

20

670

469.9

539.8

7.5

32.5

16 x 1“

76.8

18“

150

20

745

533.4

577.9

7.5

32.5

16 x 1⅛“

82.2

20“

160

20

770

584.2

635.0

8.0

33.0

20 x 1⅛“

91.8

NPS

 

 

Overpressure resistance

(105 Pa) at

Vacuum resistance

(105 Pa) at

23° C

200° C

200° C

4“

3.0

3.0

-1.0

6“

3.0

3.0

-1.0

6“

3.0

3.0

-1.0

8“

3.0

3.0

-1.0

10“

3.0

3.0

-1.0

12“

3.0

3.0

-1.0

14“

3.0

1.0

-1.0

16“

3.0

1.0

-1.0

18“

3.0

1.0

-1.0

Different nominal pipe sizes

and total lengths on request.

L = Total length

D = Outer diameter

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 Vacuum Expansion Joint. The figures stated are average and apply to room temperature.