| 
Valve part name
|
1 |
Body |
|
2 |
Seat |
|
3 |
Disc |
|
4 |
Stem |
|
5 |
Disc cover |
|
6 |
Gasket |
|
7 |
Nut |
|
8 |
Stud |
|
9 |
Bonnet |
|
10 |
Back seat |
|
11 |
Packing |
|
12 |
Pin |
|
13 |
Packing gland |
|
14 |
Packing plate |
|
15 |
Eyebolt |
|
16 |
Nut |
|
17 |
Yoke nut |
|
18 |
Screw |
|
19 |
Handwheel |
Delign & Manufacture Standard
●Design & Manufacture as per BS1873, ASME B16.34
●Face to face dimension as per ASME B16.10
●Connection ends dimension as per ASME B16.5, ASME B16.25
●Inspection and test as per ISO 5208、API598、BS6755
Pressure test
|
Class |
Back seat test (MPa) |
Shell test (MPa) |
High pressure seal test(MPa) |
Low pressure seal test(MPa) |
|
150 |
3.0 |
2.2 |
2.2 |
0.6 |
|
300 |
7.5 |
5.5 |
5.5 |
0.6 |
|
600 |
15.0 |
11.0 |
11.0 |
0.6 |
|
900 |
22.5 |
16.5 |
16.5 |
0.6 |
|
1500 |
37.5 |
27.5 |
27.5 |
0.6 |
Main valve part material
|
Part name |
Carbon steel |
Alloy steel |
Stainless steel |
|
Body |
A216 WCB |
A352 LCB |
A217 WC6 |
A217 WC9 |
A217 C5 |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
CD4MCU |
|
Bonnet |
A216 WCB |
A352 LCB |
A217 WC6 |
A217 WC9 |
A217 C5 |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
CD4MCU |
|
Stem |
A182 F6a |
A182 F304 |
A182 F304 |
A182 F304 |
A182 F304 |
A182 F304 |
A182 F316 |
A182F304L |
A182 F316L |
F51 |
|
Stud |
A193 B7 |
A320 L7 |
A193 B16 |
A193 B16 |
A193 B8 |
A193 B8 |
A193 B8M |
A193 B8 |
A193 B8M |
A193 B8M |
|
Nut |
A194 2H |
A194 4 |
A194 4 |
A194 4 |
A194 8 |
A194 8 |
A194 8M |
A194 8 |
A194 8M |
A194 8M |
|
Back seat |
A182 F6a |
A182 F304 |
A182 F304 |
A182 F304 |
A182 F304 |
A182 F304 |
A182 F316 |
A182F304L |
A182 F316L |
F51 |
|
Packing bushing |
A276 410 |
A276 304 |
A276 304 |
A276 304 |
A276 304 |
A276 304 |
A276 316 |
A276 304 |
A276 316 |
F51 |
|
Packing plate |
A216 WCB |
A352 LCB |
A217 WC6 |
A217 WC9 |
A217 C5 |
A351 CF8 |
A351 CF8M |
A351 CF3 |
A351 CF3M |
CD4MCU |
Note:1.All of valve part materiats comply with ASTM standard.
2.Above material is our normal one. if client has special requirement for it, we can choose material as per detailed site condition.
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