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Equivalent length in terms of D for L/T type ball valves

Equivalent length in terms of D for L/T type ball valves

Equivalent length in terms of D for L/T type ball valves

(OP)
Does anyone know of a reference that gives equivalent lengths for pressure drop calculation for L and T type ball valves? (Those that I possess only deal with the normal breeds of valve.)

Alternatively, a logical conservative adjustment to the standard ball valve allowance for these internal shapes (which I assume will increase pressure drop) would be appreciated.

Thank you to anyone who assists with this enquiry.

RE: Equivalent length in terms of D for L/T type ball valves

If by saying L or T type ball valve you are referring to a 3way type ball valve, here is one link to a 3way ball valve manufacturer (KTM).  
http://www.tycovalves-na.com/literature.asp

They provide a Cv rating for their valves which you could convert to a resistance coefficient or equivalent length as you like.  However, I would suggest you get the desired information from the manufacturer of the valve you have.

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