China • Yuanda Valve Group Co., Ltd.
Hundreds of Yuanda, Lean Change. Choosing Yuanda Means Reliable. The group attaches importance to the construction of corporate culture, and has three value concepts of "development concept", "people
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American Standard stop valve and flange stop valve belong to the same type of valve. The closing part is a valve disc, and the valve stem rotates around the center
| Basic standard | |
| Flange end | ASME/ANSI B16.1 |
| Face to face | ASME B16.10 |
| Test | MSSSP-70 |
The series of valves is widely used for opening and closing pipes with nominal pressure less than 125lb
| Size: | 2 " -12" |
| Norminal pressure(PSI) | 125/250 |
| Suitbk temperature | <100°C |
| Seal test | 1.41mpa/1.38MPa |
| Shell test | 2.46mpa/6.0MPa |
| Suitable medium: | steam,water |
| part name | body | body sealing ring | disc ring | disc | stem | packing | gasket | bolt | packing gland | bonnet | wheel | wheel nut |
| material | HT200 | ZCuSn5Pb5Zn5 | ZCuSn5Pb5Zn5 | HT200 | 2Cr13 | graphite | 08+ graphite | 35 | QT450-10 | HT200 | HT200 | Q235 |
| Size | DN | L | D | D1 | b | Zxф | Hmin | Hmax | ф |
| 2" | 50 | 203 | 152 | 120.5 | 15.9 | 4xф19 | 231 | 248.8 | 180 |
| 2-1/2 " | 65 | 216 | 178 | 139.5 | 17.5 | 4xф19 | 241.5 | 262.5 | 180 |
| 3" | 80 | 241 | 191 | 152.5 | 19.1 | 4xф19 | 258.7 | 289.5 | 180 |
| 4" | 100 | 292 | 229 | 190.5 | 23.9 | 8xф19 | 310.8 | 351.6 | 250 |
| 5 " | 125 | 330 | 254 | 216 | 23.9 | 8xф22 | 350.7 | 405 | 250 |
| 6" | 150 | 356 | 279 | 241.5 | 25.4 | 8xф22 | 394.7 | 462.5 | 300 |
| 8" | 200 | 495 | 343 | 298.5 | 28.6 | 8xф22 | 461.5 | 554.5 | 360 |
| 10" | 250 | 622 | 406 | 362 | 30.2 | 12xф25 | 541 | 627.5 | 400 |
1. The fluid resistance is small, and its resistance coefficient is equal to that of the pipe section with the same length.
2. Simple structure, small volume and light weight.
3. It is tight and reliable. At present, the sealing surface of gate valve is widely made of plastic with good sealing performance, and has been widely used in vacuum system.
4. It is easy to operate and open and close quickly. It only needs to rotate 90 ° from full open to full close, which is convenient for remote control.
5. The maintenance is convenient, the structure of the gate valve is simple, the sealing ring is generally movable, and the disassembly and replacement are relatively convenient.
6. When fully open or fully closed, the sealing surface of the ball and valve seat shall be isolated from the medium. When the medium passes through, it will not cause the erosion of the valve sealing surface.
7. It has a wide range of application. The diameter ranges from a few millimeters to a few meters. It can be applied from high vacuum to high pressure. When the ball rotates 90 degrees, it should be spherical at the inlet and outlet, so as to cut off the flow
