| General |
the vessels must be welded and produced in a series (minimum two vessels) and must not be intended for firing air or nitrogen |
| Design |
Simple shape (only cylindrical shells with outwardly dished and/or flat ends) |
| Material |
Pressurized parts must be made of non-alloy steel (EN 10207), non-alloy aluminum or non-age-hardening aluminum alloys |
| Energy content |
50 bar x L < PS x V ≦10.000 bar x L |
| Temperature |
≧-50℃
≦300℃ (steel)
≦100℃ (aluminum) |
| Stress |
e.g. dynamic loading has to be stated in the operating manual (number of load cycles etc.) |
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