Ball Valves Flow Coefficients - Cv

Typical flow coefficients - Cv - for ball valves - with reduced and full bore

A conventional ball valve is normally not used as a throttling valve since a partial flow will create high velocity flow tear at the ball and the seal.

Full Bore Valves

Typical flow coefficients - Cv - for full bore valves:

Valve Size
inches 1/2 3/4 1 1
1/2
2 2
1/2
3 4 6 8 10 12 14 16 18
mm 12 19 25 37.5 50 62.5 75 100 150 200 250 300 350 400 450
Flow Coefficient
C
v
26 50 94 260 480 750 1300 2300 5400 10000 16000 24000 31400 43000 57000

Reduced Bore Valves

Typical flow coefficients - Cv - for reduced bore valves:

Valve Size
inches 3 4 6 8 10 12 14 16 18 20
mm 75 100 150 200 250 300 350 400 450 500
Flow Coefficient
C
v
420 770 1800 2500 4500 8000 12000 14000 18000 22000

Related Topics

  • Piping Systems - Dimensions of pipes and tubes, materials and capacities, pressure drop calculations and charts, insulation and heat loss diagrams

Related Documents

Tag Search

  • en: ball valves flow coefficients
  • es: válvulas de bola coeficientes de caudal
  • de: Kugelhähne Durchflusskoeffizienten

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