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construction
| no. | parts | material |
| 1 | body | cl / di |
| 2 | seat | epdm / nbr / viton / silicon |
| 3 | lower shaft | ss416 / 316 / 304 |
| 4 | disc | di / cf8 / cf8m |
| 5 | upper shaft | ss416 / 316 / 304 |
| 6 | o-ring | nbr / epdm |
| 7 | bushing | ptfe / bronze |
| 8 | bolt&nut | stainless steel / galvanized |
| 9 | flat washer | stainless steel / galvanized |
| 10 | bushing | carbon steel / aluminum |
| 11 | bolt | malleable iron / al / ss |
| 12 | pressure ring | carbon steel |
| 13 | gear disc | carbon steel / aluminum |
| 14 | hand shank | malleable iron / al / ss |
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