HFA
Axial Expansion Joint

Type HFA - Axial Expansion Joint | 3D view
Note | Type HFA - Axial Expansion Joint | 3D view

Axial Expansion Joints
by coupling type

Standard model stainless steel axial expansion joint composed of single- or multi-ply unrestrained bellow, for mounting with flanges (weld-on) 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 HFA axial expansion joints please check the following table and documents or contact us.

Features

  • stainless steel bellow
  • axial movement compensation
  • optional inner sleeve
  • fixed (weld-on) flanges
  • standard program available

Technical Specifications

Type Series Size
Range
Pressure
Class
Movements
Axial [+/-mm] Lateral [+/-mm] Angular [+/-deg]
Axial Stainless Steel
HFA DN15-DN250 PN16 yes no ** no **
* constructions with tie-rods are recommended for pressure thrust restraint and movement limitation
** limited lateral and angular movements are possible / acc. to individual quotation
Type Axial Stainless Steel
Series HFA
Couplings flanges (weld-on)
Size/Range DN15-DN250
Pressure PN16
Axial yes
Lateral no **
Angular no **
* 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.
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