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