中線蝶閥系列CV值
100D/230D/231D/360/290D/291D系列中線蝶閥Cv值
| 規(guī)格DN | 閥門開啟角度流量Cv值 | 90°開啟 時Cv值 |
||||||||
| (mm) | (inch) | 10° | 20° | 30° | 40° | 50° | 60° | 70° | 80° | |
| 50 | 2″ | 1.28 | 8.08 | 19.09 | 25.06 | 45 | 64 | 90 | 125 | 135 |
| 65 | 2.5″ | 1.45 | 8.73 | 22.32 | 39 | 70 | 101 | 160 | 210 | 240 |
| 80 | 3″ | 9.00 | 24.16 | 39.87 | 60.11 | 101.65 | 162.36 | 239.96 | 325.30 | 335.75 |
| 100 | 4″ | 7.36 | 30.49 | 53.34 | 78.32 | 123.00 | 202.52 | 316.05 | 473.15 | 653.95 |
| 125 | 5″ | 18.30 | 38.46 | 69.99 | 132.53 | 217.04 | 358.29 | 587.32 | 870.74 | 1019.48 |
| 150 | 6″ | 30.29 | 55.48 | 109.92 | 200.18 | 344.16 | 552.58 | 841.91 | 1386.53 | 1572.98 |
| 200 | 8″ | 60.82 | 102.53 | 246.97 | 423.11 | 722.01 | 1118.10 | 1734.60 | 2761.20 | 3141.96 |
| 250 | 10″ | 98.82 | 226.18 | 391.06 | 688.04 | 1066.41 | 1756.83 | 2766.16 | 4619.44 | 6475.77 |
| 300 | 12″ | 4.83 | 191.31 | 468.71 | 826.29 | 1438.14 | 2437.11 | 4219.76 | 7192.48 | 8818.85 |
190D/191D/320D系列中線蝶閥Cv值
| 規(guī)格DN | 閥門開啟角度流量Cv值 | 90°開啟 時Cv值 |
||||||||
| (mm) | (inch) | 10° | 20° | 30° | 40° | 50° | 60° | 70° | 80° | |
| 50 | 2″ | 0.1 | 5 | 12 | 24 | 32.09 | 45.96 | 66.57 | 87.24 | 95.55 |
| 65 | 2.5″ | 0.2 | 8 | 20 | 37 | 65 | 98 | 144 | 204 | 220 |
| 80 | 3″ | 0.3 | 12 | 22 | 39 | 70 | 116 | 183 | 275 | 302 |
| 100 | 4″ | 0.5 | 17 | 36 | 78 | 139 | 230 | 364 | 546 | 600 |
| 125 | 5″ | 0.8 | 29 | 61 | 133 | 237 | 392 | 620 | 930 | 1022 |
| 150 | 6″ | 2 | 45 | 95 | 205 | 366 | 605 | 958 | 1437 | 1579 |
| 200 | 8″ | 3 | 89 | 188 | 408 | 727 | 1202 | 1903 | 2854 | 3136 |
| 250 | 10″ | 4 | 151 | 320 | 694 | 1237 | 2047 | 3240 | 4859 | 5340 |
| 300 | 12″ | 5 | 234 | 495 | 1072 | 1911 | 3162 | 5005 | 7507 | 8250 |
| 350 | 14″ | 6 | 338 | 715 | 1549 | 2761 | 4568 | 7230 | 10844 | 11917 |
| 400 | 16″ | 8 | 464 | 983 | 2130 | 3797 | 6282 | 9942 | 14913 | 16388 |
| 450 | 18″ | 11 | 615 | 1302 | 2822 | 5028 | 8320 | 13168 | 19752 | 21705 |
| 500 | 20″ | 14 | 791 | 1674 | 3628 | 6465 | 10698 | 16931 | 25396 | 27908 |
| 600 | 24″ | 22 | 1222 | 2587 | 5605 | 9989 | 16528 | 26157 | 39236 | 43116 |
| 700 | 28″ | 36 | 1813 | 3639 | 6636 | 10000 | 14949 | 22769 | 34898 | 49500 |
| 800 | 32″ | 45 | 2387 | 4791 | 8736 | 13788 | 20613 | 31395 | 48117 | 68250 |
| 900 | 36″ | 60 | 3021 | 6063 | 11055 | 17449 | 26086 | 39731 | 60895 | 86375 |
| 1000 | 40″ | 84 | 4183 | 8395 | 15307 | 24159 | 36166 | 55084 | 84425 | 119750 |
| 1200 | 48〃 | 106 | 5370 | 10741 | 19641 | 30690 | 46065 | 70587 | 107568 | 153450 |
注：當(dāng)閥門用做兩位（開、關(guān)）使用時其額定流量系數(shù)按90°開啟時的CV值選取；當(dāng)閥門用做調(diào)節(jié)使用時其額定流量系數(shù)
按70°開啟時CV值選取。推薦控制角度為25°～70°，最佳控制角度為60°～65°。
流阻系數(shù)與Cv值的換算關(guān)系
d²
Cv = 29.9———— d :閥門內(nèi)徑或閥座口徑(英寸)
√¯ξ¯ ξ:流阻系數(shù)(無量綱)
