Control Valve Sizing

Hi,

A good starting point is to know, what is going through the valve (water, air, oil,...) , how much (litres per minute ...), at what pressure (psi, bar,...) and the environment the valve is in(indoors, outside, explosive or corrosive, ...)

Best regards

John

http://www.google.com/#hl=en&output=search&sclient=psy-ab&q=control+valve+sizing+handbook&psj=1&oq=Control+Valve+Sizing&aq=5&aqi=g10&aql=&gs_sm=1&gs_upl=30214l30214l0l35777l1l1l0l0l0l0l562l562l5-1l1l0&bav=on.2,or.r_gc.r_pw.r_qf.,cf.osb&fp=e6372d9bb62944f8&biw=853&bih=466

Hi Khwaja,

This is a very complex task.

The easiest way - without going through all the thoery and understanding, is to firstly determine your limits of duty (ie the control valve needs to control between a maximum and minimum points). So you need to define the maximum flow/pressure duty points, and the minimum flow/pressure duty point.

Then simply use the manufacturer to determine suitable valve for accurate control between your system max/min duty points. They are the experts, and they also know the Cv of thier valves accurately.

Hope this helps,

Kind Regards,

Anthony

Dear All,

Thanks for your infos.

khwaja