Ball Valves and typical Flow Coefficients - Cv

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

Conventional ball valves are normally not used as throttling valves since partial flow will create high velocity flow tear at the ball and seals.

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 - dimensions, materials, capacities - pressure drop calculations and charts - insulation and heat loss diagrams

Related Documents

Key Words

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

Search the Engineering ToolBox

- "the most efficient way to navigate the Engineering ToolBox!"

Engineering ToolBox - SketchUp Edition - Online 3D modeling!

3D Engineering ToolBox - draw and model technical applications

Engineering ToolBox - SketchUp Edition - add standard and customized parametric components - like flange beams, lumbers, piping and more - to your SketchUp model - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro. Add from the Sketchup Extension Warehouse!

Translate the Engineering ToolBox!
About the Engineering ToolBox!

close