info@welcovalve.com
TEL: 86-577-67279881
FAX: 86-577-67279880
+86-15067717767
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DN50-PN250 high pressure gate valve is used for oilwell project or high pressure project, rising stem or non-rising stem, special bolted bonnet design, anti-corrosive and abrasion resistance disc and seat ring for long life service.
Standard specification:
Design and manufacture: API 600 (ISO 10434),
Inspection and Test: API 598, API 600
End flange dimension: ASME B 16.5 ( for NPS≤24);
ASME B 16.47 series B, API605 or ASME B 16.47 series A, MSS SP-44(for NPS＞24).
BW end dimension: ASME B 16.25.
Face to face and end to end:ASME B 16.10.
Pressure-temperature ratings:ASME B 16.34.
Performance specification
|
Technical Specification |
ANSI Class (Lbs) |
|||||||
|
150 |
300 |
400 |
600 |
900 |
1500 |
2500 |
||
|
Test Pressure (MPA) |
Shell Test |
2.94 |
7.67 |
10.2 |
15.3 |
22.98 |
38.3 |
63.83 |
|
BackSeat Test |
2.16 |
5.62 |
7.48 |
11.23 |
16.85 |
28.08 |
46.81 |
|
|
Seal Test |
2.16 |
5.62 |
7.48 |
11.23 |
16.85 |
28.08 |
46.81 |
|
|
Air Test |
0.55+/-0.07 |
|||||||
Applicable temperature: -196 C degree to 600 C degree
Note: please take notice to choose different materials for different working conditions.
Application: Common type: water, steam, oil, liquid gas, natural gas etc.
Anti-sulphur type: gas oil etc which contains h2s, co composition.
The stem connection to the gate is a T-head design which is integral (without welding) with the stem.
Besides the general gate valves, our company also can make cryogenic gate valve, jacketed gate valve, bellow seal gate valve and extended stem gate valve for underground installation application.
Body: A217 WC6, WC9, C5, C12, A351 CF8, CF8M, CF3, CF3M
Bonnet: A217 WC6, WC9, C5, C12, A351 CF8, CF8M, CF3, CF3M
Gasket: Spiral wound 304SS+graphite
Disc: A217 WC6+STL, WC9+STL, C5+STL, C12+STL, A351 CF8+STL, CF8M+STL, CF3+STL, CF3M+STL
Disc: F11+STL, F22+STL, F5+STL, F9+STL, F304+STL, F316+STL etc
Bolts and nuts: A193 Gr B7/A194 Gr 2H, A193 Gr B16/A194 Gr 4/7, A320 Gr L7/A194 Gr 4, A193 B8/A194 8, A193 B8M/A194 B8
Also we can make the different trim material according to API trim chart, likely monel, hastelloy C, inconel, alloy 20 and so on.