Just a follow-up to the bfp point.... -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Thom McMahon Sent: Tuesday, January 09, 2007 6:49 PM To: [email protected] Subject: Re: max velocity
Just as a side note Backflow preventors are tested and usually listed at 10 Fps, if your exceeding the flow limits of the backflow preventor you can damage it in full forward flow testing. Thom McMahon Firetech, Inc. 2560 Copper Ridge Dr Steamboat Springs, CO 80488-2136 Tel: 970-879-7952 Fax: 970-879-7926 Thom- An interesting point...But what are we to do with this information? I assume all of us take bfp pressure loss into account in our designs using the mfg cut sheets and corresponding curves. Presumably if the mfg provides the curves, then that is within the acceptable range of operation of the bfp and the design is fine. Are you simply making the point that you can damage the bfp if you perform some type of test that takes it out of its range? Paul Sincaglia, P.E. Firesafety Solutions, Inc. _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum
