Calculating flow resistance coefficient for butterfly valve 1

[apf]

How can I Calculate the flow resistance coefficient (?) for butterfly valve?

 

[BigInch]

Don't know why you want to calculate it. Normally its easier to do a flow test and measure it. Or even easier is just look them up on this table.

http://www.hybvalve.com/cv_value_butterfly_valves.html

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"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/

 

[thought2007]

apf,

With moody chart you can find out flow resistance

John

 

[BigInch]

Moody doesn't do butterfly valves, or any valves. Pretty much just straight pipe. Not even elbows.

**********************
"Pumping accounts for 20% of the world’s energy used by electric motors and 25-50% of the total electrical energy usage in certain industrial facilities."-DOE statistic (Note: Make that 99% for pipeline companies)

http://virtualpipeline.spaces.live.com/