HWA
Axial Expansion Joint

Type HWA - Axial Expansion Joint | 3D view
Note | Type HWA - Axial Expansion Joint | 3D view
Type HWA - Axial Expansion Joint | dimensional sketch
Note | Type HWA - Axial Expansion Joint | dimensional sketch

Axial Expansion Joints
by coupling type

Standard model stainless steel axial expansion joint composed of single- or multi-ply unrestrained bellow, for mounting with welding ends 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 HWA axial expansion joints please check the following table and documents or contact us.

Features

  • stainless steel bellow
  • axial movement compensation
  • optional inner sleeve
  • welding ends
  • standard program available

Technical Specifications

Type Series Size
Range
Pressure
Class
Movements
Axial [+/-mm] Lateral [+/-mm] Angular [+/-deg]
Axial Stainless Steel
HWA DN15-DN250 PN16 yes no ** no **
* constructions with tie-rods are recommended for pressure thrust restraint and/or movement limitation
** limited lateral and angular movements are possible / acc. to individual quotation
Type Axial Stainless Steel
Series HWA
Couplings weld-ends
Size/Range DN15-DN250
Pressure PN16
Axial yes
Lateral no **
Angular no **
* constructions with tie-rods are recommended for pressure thrust restraint and/or 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 29 175 0.1
20 12 29 175 0.2
25 15 65 185 0.3
32 15 60 185 0.4
40 15 72 190 0.5
50 23 82 205 / 220 ** 0.8
65 23 72 230 / 240 ** 1.2
80 23 91 230 / 240 ** 1.7
100 23 79 230 / 250 ** 2.2
125 23 119 270 / 280 ** 3.3
150 33 162 270 / 315 ** 4.3
200 35 149 300 / 355 ** 6.5
250 35 153 300 / 355 ** 8.0
* overall length can be adjusted on individual request.
** overall length for items with inner sleeve (HWAI)
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