Industrial standards are: ISO, DIN, IDF, 3a, SMS, etc
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Specifications(DN) | A | B | Specifications(ISO) | L | H |
| 25 | 62.5 | 82 | 25 | 62.5 | 82 | |
| 32 | 75 | 95.5 | 38 | 75 | 95.5 | |
| 40 | 75 | 95.5 | 51 | 87.5 | 109 | |
| 50 | 87.5 | 109 | 63.5 | 95 | 137 | |
| 65 | 95 | 137 | 76.1 | 115 | 148 | |
| 80 | 115 | 148 | 101.6 | 155 | 164 | |
| 100 | 155 | 164 |