Three-piece Hard Seal Ball Valve
Performance Specification
Pressure | Testing pressure at constant temperature (MPa) | Applicable temperature | Applicable medium
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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 (hard Seal)
No. | Accessory name | Material | |
GB | ASTM | ||
1 | Body | WCB | A216-WCB |
2 | Packing | Graphite | Graphite |
3 | Seat | 0Cr19Ni10Ti+STL | A182-F304+STL |
4 | Ball | 0Cr19Ni10Ni9Ti+N | A182-F304+N |
5 | Stud | 35CrMoA | A193-B7 |
6 | Nut | 45 | A194-2H |
7 | Spring yoke | 06C19Ni10 | A182-F304 |
8 | Spring | InconelX-750 | Inconel X-750 |
9 | Bonnet | WCB | A216-WCB |
10 | Gasket | Graphite+1Cr18Ni9Ti | Graphite+304 |
11 | Gasket | 06C19Ni10 | A182-F304 |
12 | Packing | Graphite+1Cr18Ni9Ti | Graphite+304 |
13 | Stem | 06C 19N110 | A182-F304 |
14 | Packing gland | WCB | A216-WCB |
15 | Locating piece | Q235A | A36 |
16 | Wrench | WCB | A216-WCB |
17 | Ring | 65Mn | AISI1566 |
18 | Screw nail | 35CrMoA | A193-B7 |
Note: 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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