1.Technical specification
| Project |
| GB | API | ASME |
| Design reference |
|
|
|
|
| Design standard |
| GB/T12237 | API6DAPI608 | ASME B16.34 |
| Structural length | Flanged ends | GB/T12221 | API6D | ASME B16.10 |
| Welded connection |
|
|
|
| Flanged endsr |
| GB/T9113HG/T20592-20615 |
| ASME B16.5 |
| Butt-welding ends |
| GB/T12224 |
| ASME B16.25 |
| Test&inspection |
| JB/T9092GB/T13927 | API6D | API598 |
Note:The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's repuirement
2.Major parts material (Soft seal)
| No | Accessory name | Material - GB | Material - ASTM |
| 1 | Bonnet | WCB | A216-WCB |
| 2 | Nut | 45 | A194-2H |
| 3 | Gasket | Graphite+stainless steel | B12.10-304F.G |
| 4 | Stud | 35CrMoA | A193-B7 |
| 5 | Body | WCB | A216-WCB |
| 6 | Seat | PTFE | PTEE |
| 7 | Ball | 25+Cr | A105+Cr |
| 8 | Stem | 1Cr13 | A276-410 |
| 9 | Gasket | PTEE | PTEE |
| 10 | Packing | Graphite | Graphite |
| 11 | Packing gland | WCB | A216-WCB |
| 12 | Screw nall | 35CrMoA | A193-B7 |
| 13 | Locating piece | Q235A | A36 |
| 14 | Ring | 65Mn | AISI 1566 |
| 15 | Wrench | KTH350-10 | A47-667 Gr.32510 |