Welded Soft Sealing Ball Valve
Performance Specification
| Pressure | Testing pressure at constant temperature (MPa) | Applicable temperature | Applicable medium
|
|||
| The shell testing | High-pressure seal | Low-pressure seal | ||||
| Nominal rating pressure(PN) | 1.6 | 2.4 | 1.76 | 0.6 |
-29~121℃ |
Natural gas,liquefied gas,coal gas,oil,water, requirement |
| 2.5 | 3.75 | 2.75 | 0.6 | |||
| 4.0 | 6.0 | 4.4 | 0.6 | |||
| 6.4 | 9.6 | 7.04 | 0.6 | |||
| 10.0 | 15.0 | 11.0 | 0.6 | |||
| 16.0 | 24.0 | 17.6 | 0.6 | |||
| Pressure classes(Class) | 150 | 2.94 | 2.16 | 0.6 | ||
| 300 | 7.67 | 5.62 | 0.6 | |||
| 400 | 10.2 | 7.48 | 0.6 | |||
| 600 | 15.3 | 11.23 | 0.6 | |||
| 900 | 23.0 | 16.85 | 0.6 | |||
| 1500 | 39.0 | 28.6 | 0.6 | |||
Technical Specification
| Design reference | GB | API | ASME | |
| Design standard | GB/T12237 | API6D | ASME B16.34 | |
| Structural length | Flanged ends | GB/T12221 | API6D | ASME B16.10 |
| Welded connection | GB/T12221 | |||
| Flanged ends | GB/T9113JB/T79 | ASME B16.5 | ||
| Butt-welding ends | GB/T12224 | ASME B16.25 | ||
| Test &inspection | GB/T13927 JB/T9092 | API6D | API598 | |
Note:The sizes of valve connecting flange and butt-welding terminas can be designed according to customer's requirement.
Major Parts Material Form (soft Seal)
| No. | Accessory name | Material | |
| GB | ASTM | ||
| 1 | Seat | PTFE | PTFE |
| 2 | Bonnet | 25 | A105 |
| 3 | Body | 25 | A105 |
| 4 | Ball* | 25+Cr | A105+Cr |
| 5 | Stem** | 12Cr13 | A276-410 |
| 6 | Gasket | PTFE | PTFE |
| 7 | Packing body | 12Cr13 | A276-410 |
| 8 | Packing seat | 25 | A105 |
| 9 | Packing | PTFE；Carbon fibre;Soft graphite | |
| 10 | Packing gland | WCB | A216-WCB |
| 11 | Screw | 35CrMoA | A193-87 |
| 12 | Locating piece | Q235A | A36 |
| 13 | Ring | 65Mn | AISI 1566 |
| 14 | Handle | KTH350-10 | A47-667Cr32510 |
Note: The material of this part about the anti-sulphur typo valve is GB(12Cr18Ni9+ NIP)ASTM(A182-304+NIP).
The material of this part about the anti-sulphur type valve is GB(12Cr18Ni9)ASTM(A276-321).
Major parts of the valve series and materials of sealing surface differ according to actual working condition and customer's special requirement.
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