Type HFG
Axial Expansion Joint

Standard model stainless steel axial expansion joint composed of single- or multi-ply unrestrained bellow, for mounting with flanges (swivel) up the pipeline.

Available with optional inner sleeve for bellow's protection and improved stability. Couplings can be made out of various carbon-steel or stainless steel grades.

For detailed technical specifications on HFG axial expansion joints please check the following table and documents or contact us.

Properties

  • stainless steel bellow
  • axial movement compensation
  • optional inner sleeve
  • swivel (loose) flanges
  • standard program available
Type HFG - Axial Expansion Joint | 3D view
Type HFG - Axial Expansion Joint | 3D view

Technical Specifications

TypeSeriesSizePressureMovements

RangeClassAxial [+/mm]Lateral [+/mm]Angular [+/deg]
Axial Stainless SteelHFGDN15-DN250PN16yesno **no **
TypeAxial Stainless Steel
SeriesHFG
Couplingsflanges (swivel)
Size / RangeDN15-DN250
PressurePN16
Axialyes
Lateralno **
Angularno **

* constructions with tie-rods are recommended for pressure thrust restraint and movement limitation
** limited lateral and angular movements are possible / acc. to individual quotation

Standard Program

Nominal
Diameter
[mm]

Axial
Movement

[+/-mm]

Spring

Rate
[N/mm]

Overall
Length

[mm]

Approx.
Weight

[kg]

15

12

29

100

1.3

20

12

29

100

1.6

25

15

65

105

2.2

32

15

60

120

3.5

40

15

72

125

3.9

50

23

82

150

4.7

65

23

72

155

5.9

80

23

91

165

8.0

100

23

79

170

8.7

125

23

119

185

10.9

150

33

162

205

12.7

200

35

149

235

18.2

250

35

153

240

22.7

* overall length can be adjusted on individual request.