Cv/Kv Values of O-type Ball Valve

Cv Value of O-type Ball Valve
SpecificationOpening Degree
Inch (in)DN(mm)20%30%50%70%80%100%
1/2"DN150.2 0.7 2.4 8.9 12.3 18
3/4"DN200.5 1.6 5.2 17.6 25.5 36
1"DN250.9 2.2 7.2 23.8 32.9 48
1-1/4"DN321.5 3.9 13.5 46.5 70.7 93
1-1/2"DN402.6 6.7 23.6 83.4 120.3 165
2"DN504.6 9.2 29.5 104.0 156.0 207
2-1/2"DN657.8 20.5 65.8 216.3 330.1 450
3"DN8015.2 34.2 106.2 382.4 563.8 780
4"DN10028.3 65.9 204.6 682.0 1005.0 1360
5"DN12532.1 84.6 254.2 885.3 1258.0 1700
6"DN15048.6 128.2 393.0 1352.0 1918.0 2600
8"DN20081.5 210.0 626.0 2185.0 3110.0 4200
Kv Value of O-type Ball Valve
SpecificationOpening Degree
Inch (in)DN(mm)20%30%50%70%80%100%
1/2"1501281116
3/4"20014152231
1"25126212841
1-1/4"321312406180
1-1/2"40262072104142
2"50482590134178
2-1/2"6571857186285388
3"80132992330485672
4"10024571765888661172
5"125287321976310841465
6"15042111339116516532241
8"20070181540188326813620

The table is for reference only, and the specific details are subject to the technical manual

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