Todd: For fittings that aren't in 13, I always refer to the Crane Company piping manual. In their table of fittings and valves, an 2-1/2 inch angle valve is equivalent to 33 feet of 2-1/2 inch steel pipe. So at a flow of 250 gpm, you lose about 7 psi. If you want a copy of the table, contact me off-line with a fax number and I will send it to you.
Dave David de Vries, P.E., CSP [EMAIL PROTECTED] Todd Williams - work <[EMAIL PROTECTED]> wrote: Someone in the Forum recently made a reference to friction loss in fire hose valves being around 3 psi with some higher. Is there any documentation for that? I haven't be able to locate any. Thanks. Todd G. Williams, PE Fire Protection Design/Consulting Stonington, Connecticut 860-535-2080 www.fpdc.com _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
