pressure drop calculation for ball valve
pressure drop calculation for ball valve
(OP)
How can I calculate the pressure loss of fluid flowing through a ball valve? I don’t have any reference about it. Could you help me?
Thanks
Thanks





RE: pressure drop calculation for ball valve
Read, study and work the example problems in Crane's Tech Paper #410 - appropriately titled "Flow of fluids through valves, fittings, and pipe.
Go to Example 4-6 on page 4-3 and there you will find the answer to your lack of references.
Art Montemayor
Spring, TX
RE: pressure drop calculation for ball valve
I would assume that a gate and a ball valve would have comparable loss coefficients at full open.
Best regards
Morten
RE: pressure drop calculation for ball valve
http://www.jamesbury.com/public/brands/default.asp
RE: pressure drop calculation for ball valve
John
RE: pressure drop calculation for ball valve
RE: pressure drop calculation for ball valve
Full port ball valves can be estimated as an L/D of 3.
RE: pressure drop calculation for ball valve
The term ball valve in the UK has changed in recent years and we separate the types by using the term 'float operated' (which I and half the industry still call a ball valve because we are old. Young engineers call the quarter turn valves 'ball valve'.
Float operated valves are tabulated in the Institute of Plumbing Guide (UK)or contact the manufacturer. Ball valves however are straight through usually and have minimal resistance. Just be careful where you use them because shutting or opening them quickly can result in some unhappy and expensive experiences..(floods, building damage, etc..recently a 12 storey accomodation block was flooded by an engineer turning a valve on too quickly)
Friar Tuck of Sherwood