密封蝶阀, 硬密封蝶阀, 蝶阀
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2020-09-15 |
技术交流
密封圈在蝶板上的多层次硬密封蝶阀流量系数
密封圈在蝶板上的多层次硬密封蝶阀流量系数(即Cv值)如下表格所示：
| 口径 | PN0.25 | PN0.6 | PN1.0 | PN1.6 | PN2.5 | |
| DN | NPS | |||||
| 150 | 6" | – | 739 | 739 | 536 | 454 |
| 200 | 8" | – | 1860 | 1440 | 1100 | 1040 |
| 250 | 10" | – | 2930 | 2350 | 2350 | 1840 |
| 300 | 12" | – | 5070 | 4390 | 3730 | 2880 |
| 350 | 14" | 8390 | 7040 | 6250 | 5640 | 4040 |
| 400 | 16" | 11100 | 10400 | 8560 | 7410 | 5700 |
| 450 | 18" | 14900 | 13300 | 11600 | 9490 | 7420 |
| 500 | 20" | 18500 | 16600 | 14600 | 11900 | 9300 |
| 600 | 24" | 29100 | 26000 | 22100 | 17300 | 13500 |
| 700 | 28" | 39800 | 36000 | 30300 | 24000 | 20100 |
| 750 | 30" | 46700 | 41400 | 34900 | 27700 | 23400 |
| 800 | 32" | 55600 | 47600 | 40000 | 31700 | 26700 |
| 900 | 36" | 70400 | 61200 | 52200 | 42400 | 35300 |
| 1000 | 40" | 88800 | 75900 | 64700 | 52700 | 46600 |
| 1100 | 44" | 10800 | 92100 | 78400 | 67700 | 58700 |
| 1200 | 48" | 129000 | 112000 | 97500 | 83300 | 77300 |
| 1300 | 52" | 153000 | 132000 | 116000 | 99300 | – |
| 1400 | 56" | 186000 | 153000 | 139000 | – | – |
| 1500 | 60" | 221000 | 178000 | 161000 | – | – |
| 1600 | 64" | 253000 | 206000 | 194000 | – | – |
| 1800 | 72" | 321000 | 266000 | – | – | – |
| 2000 | 80" | 398000 | 353000 | – | – | – |
| 2200 | 88" | 501000 | 435000 | – | – | – |
| 2400 | 96" | 599000 | – | – | – | – |
| 2600 | 104" | 718000 | – | – | – | – |
| 2800 | 112" | 838000 | – | – | – | – |
| 3000 | 120" | 963000 | – | – | – | – |
注释：上表中流量系数数据的蝶阀为多层式硬密封结构，密封圈放置在蝶板上；阀杆为整体式结构。