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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Usage:
This valve is only used to prevent reverse flow of medium on various pipelines or equipment and to open and close one way.
1.Before assembly, check whether the parts are qualified. Parts that affect the service performance cannot be assembled
2.The connecting bolts of valve disc and rocker are tightened with bolt tightening agent
3.The inner cavity of the valve body must be cleaned, and the flange connecting bolts should be symmetrically and gradually tightened
4.After assembly, the product shall be opened and closed flexibly without jamming
5.The pressure test of the whole machine shall meet the requirements of GB / T1 39 2 7
6.The inner cavity of the valve and the contact surface with the medium shall be painted with red primer, and the overall valve surface shall be painted with medium gray paint
| Nominal diameter | DN50~DN200 | |
| Nominal pressure | 1.6 Mpa | |
| Suitable temperature | temperature ≤ 200 ℃ | |
| Pressure Test | Seal Test(water) | 1.8 mpa |
| Shell Test(water) | 2.4 mpa | |
| Suitable medium | vapour water oil | |
| DN | L | D | D1 | D2 | b | f | Z*φ | H |
| 50 | 200 | 165 | 125 | 99 | 20 | 2 | 4*19 | 115 |
| 65 | 240 | 185 | 145 | 118 | 20 | 2 | 4*19 | 130 |
| 80 | 260 | 200 | 160 | 132 | 22 | 2 | 8*19 | 147 |
| 100 | 300 | 220 | 180 | 156 | 24 | 2 | 8*19 | 166 |
| 125 | 350 | 250 | 210 | 184 | 26 | 2 | 8*19 | 188 |
| 150 | 400 | 285 | 240 | 211 | 26 | 2 | 8*23 | 217 |
| 200 | 500 | 340 | 295 | 266 | 30 | 2 | 12*23 | 275 |
