Engineering ToolBox - Resources, Tools and Basic Information for Engineering and Design of Technical Applications!

This is an AMP page - Open full page! for all features.

Butterfly Valves - Typical Flow Coefficients - Cv

Butterfly valves and typical flow coefficients - Cv

Sponsored Links

The table below can be used to indicate butterfly valves and their flow coefficients at different open (or closed) positions. Manufacturers data should always be checked before actual use.

Flow Coefficient - Cv
Valve SizeOpenness
(disc angle)
Maximum flow velocity
(ft/sec)
inchesmm90 deg
(wide open)
70 deg50 deg30 degANSI 150ANSI 300
2 50 85 65 35 15 90 90
2 65 160 120 65 29 80 90
3 80 260 195 104 47 80 80
4 100 475 356 190 86 80 80
5 125 770 577 308 139 80 80
6 150 1125 844 450 203 75 80
8 200 2110 1583 844 380 70 75
10 250 3350 2513 1340 603 60 70
12 300 4800 3600 1920 864 50 60
14 350 6900 5175 2760 1224 50
16 400 9000 6750 3600 1620 50
18 450 11800 8850 4720 2124 50
20 500 14300 10725 5720 2574 50
  • 1 ft/s = 0.3048 m/s
Sponsored Links

Related Topics

Related Documents

Sponsored Links

Share

Search Engineering ToolBox

  • the most efficient way to navigate the Engineering ToolBox!

SketchUp Extension - Online 3D modeling!

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

Privacy

We don't collect information from our users. Only emails and answers are saved in our archive. Cookies are only used in the browser to improve user experience.

Some of our calculators and applications let you save application data to your local computer. These applications will - due to browser restrictions - send data between your browser and our server. We don't save this data.

Google use cookies for serving our ads and handling visitor statistics. Please read Google Privacy & Terms for more information about how you can control adserving and the information collected.

AddThis use cookies for handling links to social media. Please read AddThis Privacy for more information.

Topics

Unit Converters

Temperature

oC
oF


Load Calculator!

Length

m
km
in
ft
yards
miles
naut miles


Load Calculator!

Area

m2
km2
in2
ft2
miles2
acres


Load Calculator!

Volume

m3
liters
in3
ft3
us gal


Load Calculator!

Weight

kgf
N
lbf


Load Calculator!

Velocity

m/s
km/h
ft/min
ft/s
mph
knots


Load Calculator!

Pressure

Pa (N/m2)
bar
mm H2O
kg/cm2
psi
inches H2O


Load Calculator!

Flow

m3/s
m3/h
US gpm
cfm


Load Calculator!

8 6

This website use cookies. By continuing to browse you are agreeing to our use of cookies! Learn more