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

Water Control Valves - Calculating Kv Values

Design of water process control valves and their Kv values

Sponsored Links

The table below can be used to estimate the Kv values for process control valves used in water systems.

  1. Go to the left column and select the pressure drop for the valve
  2. Go right in table close to the actual water flow. Interpolate to find the approximately Kv value

For full table - rotate the screen!

Kv
Pressure dropWater flow (kg/h)
36721081441803607201080144018003600
(kPa)(bar)
Water flow (kg/s)
0.010.020.030.040.050.10.20.30.40.51
1 0.01 0.36 0.72 1.1 1.4 1.8 3.6 7.2 10.8 14.4 18.0 36.0
2 0.02 0.25 0.51 0.76 1.0 1.3 2.6 5.1 7.6 10.2 12.7 25.5
3 0.03 0.21 0.42 0.62 0.83 1.0 2.1 4.2 6.2 8.3 10.4 20.8
4 0.04 0.18 0.36 0.54 0.72 0.90 1.8 3.6 5.4 7.2 9.0 18.0
5 0.05 0.16 0.32 0.48 0.64 0.80 1.6 3.2 4.8 6.4 8.1 16.1
10 0.1 0.11 0.23 0.34 0.46 0.57 1.1 2.3 3.4 4.6 5.7 11.4
20 0.2 0.08 0.16 0.24 0.32 0.40 0.80 1.6 2.4 3.2 4.0 8.1
30 0.3 0.07 0.13 0.2 0.26 0.33 0.66 1.3 2.0 2.6 3.3 6.6
40 0.4 0.06 0.11 0.17 0.23 0.28 0.57 1.1 1.7 2.3 2.9 5.7
50 0.5 0.05 0.10 0.15 0.20 0.25 0.51 1.0 1.5 2.0 2.6 5.1
100 1 0.04 0.07 0.11 0.14 0.18 0.36 0.72 1.1 1.4 1.8 3.6
200 2 0.03 0.05 0.08 0.10 0.13 0.25 0.51 0.76 1.0 1.3 2.6
300 3 0.02 0.04 0.06 0.08 0.10 0.21 0.42 0.62 0.83 1.0 2.1
400 4 0.02 0.04 0.05 0.07 0.09 0.18 0.36 0.54 0.72 0.9 1.8
500 5 0.02 0.03 0.05 0.06 0.08 0.16 0.32 0.48 0.64 0.8 1.6
1000 10 0.01 0.02 0.03 0.05 0.06 0.11 0.23 0.34 0.46 0.57 1.1
2000 20 0.01 0.02 0.02 0.03 0.04 0.08 0.16 0.24 0.32 0.40 0.80
3000 30 0.01 0.01 0.02 0.03 0.03 0.07 0.13 0.20 0.26 0.33 0.66
4000 40 0.01 0.01 0.02 0.02 0.03 0.06 0.11 0.17 0.23 0.28 0.57

 

For full table - rotate the screen!

Kv
Pressure dropWater flow (kg/h)
72001080014400180003600072000108000144000180000360000720000
(kPa)(bar)
Water flow (kg/s)
23451020304050100200
1 0.01 72.0 108 144 180 360 720 1080 1440 1800 3600 7200
2 0.02 50.9 76.4 102 127 254 509 763 1019 1273 2546 5091
3 0.03 41.6 62.4 83.1 103 207 415 623 831 1039 2078 4157
4 0.04 36.0 54.0 72.0 90.0 180 360 540 720 900 1800 3600
5 0.05 32.2 48.3 64.4 80.5 161 321 483 644 805 1610 3220
10 0.1 22.8 34.2 45.5 56.9 113 227 342 455 569 1138 2277
20 0.2 16.1 24.2 32.2 40.3 80.5 161 242 322 402 805 1610
30 0.3 13.2 19.7 26.3 32.9 65.7 131 197 263 329 657 1315
40 0.4 11.4 17.1 22.8 28.5 56.9 114 171 228 285 569 1138
50 0.5 10.2 15.3 20.4 25.5 50.9 102 153 204 255 509 1018
100 1 7.2 10.8 14.4 18.0 36.0 72.0 108 144 180 360 720
200 2 5.1 7.6 10.2 12.7 25.5 50.9 76.4 102 127 255 509
300 3 4.2 6.2 8.3 10.4 20.8 41.6 62.4 83.1 104 208 416
400 4 3.6 5.4 7.2 9.0 18.0 36.0 54.0 72.0 90.0 180 360
500 5 3.2 4.8 6.4 8.1 16.1 32.2 48.3 64.4 80.5 161 322
1000 10 2.3 3.4 4.6 5.7 11.4 22.8 34.2 45.5 56.9 114 228
2000 20 1.6 2.4 3.2 4.0 8.1 16.1 24.2 32.2 40.3 80.5 161
3000 30 1.3 2.0 2.6 3.3 6.6 13.2 19.7 26.3 32.9 65.7 131
4000 40 1.1 1.7 2.3 2.9 5.7 11.4 17.1 22.8 28.5 56.9 114

Example - Kv for a Water Control Valve

For a water control valve with

  • pressure drop 2 bar
  • water flow 1 kg/s

- the Kv value should be approximately 2.6 according the table above.

Sponsored Links

Related Topics

Related Documents

Tag Search

  • en: water control valve process regulating
Sponsored Links

Search the Engineering ToolBox

Engineering ToolBox - SketchUp Extension - Online 3D modeling!

3D Engineering ToolBox Extension to SketchUp - add parametric components to your SketchUp model

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 Pro Sketchup Extension Warehouse!

Translate this page to
About the Engineering ToolBox!

Citation

This page can be cited as

  • Engineering ToolBox, (2003). Water Control Valves - Calculating Kv Values. [online] Available at: https://www.engineeringtoolbox.com/control-valves-water-d_265.html [Accessed Day Mo. Year].

Modify access date.

Customize Ads in the ToolBox

Make ads more useful in Google Ad Settings .

. .

close

3D Engineering ToolBox - draw and model technical applications! 2D Engineering ToolBox - create and share online diagram drawing templates! Engineering ToolBox Apps - mobile online and offline engineering applications!

Scientific Online Calculator

Scientific Calculator

11 16

Sponsored Links
.