V8系列电动蝶阀阀门开度与流量系数的速查表
各开度Kv 值（因为排版的关系，请诸位按顺位查找数据）
Size 10° 20° 30° 40° 50° 60° 70° 80° 90°
DN50 1.1 3.8 10.2 22.0 38.0 60.0 100.0 132.0 193.0
DN65 2.0 7.5 18.2 35.0 61.0 95.0 187.0 240.0 315.0
DN80 2.5 9.8 26.0 48.0 83.0 126.0 214.0 338.0 425.0
DN100 3.8 14.6 39.0 72.0 119.0 221.0 361.0 606.0 723.0
DN125 6.5 24.0 62.0 118.0 217.0 394.0 599.0 1038.0 1243.0
DN150 10.0 41.0 95.0 175.0 326.0 542.0 873.0 1260.0 1859.0
DN200 19.0 64.0 165.0 306.0 573.0 995.0 1567.0 2310.0 3124.0
DN250 28.0 101.0 245.0 450.4 836.0 1462.0 2253.0 3256.0 4757.0
DN300 34.0 129.0 312.0 615.0 1137.0 2125.0 3248.0 4991.0 7058.0
DN350 47.0 163.0 390.0 795.0 1498.0 2573.0 3980.0 5749.0 8319.0
DN400 62.0 231.0 508.0 1077.0 1973.0 3381.0 5385.0 8099.0 11458.0
DN450 75.0 256.0 621.0 1208.0 2315.0 3925.0 6331.0 9474.0 13612.0
DN500 103.0 346.0 859.0 1692.0 3086.0 5348.0 8513.0 13109.0 18748.0
DN600 139.0 494.0 1153.0 2389.0 4466.0 7561.0 11945.0 18088.0 25217.0
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