If you look at FIGURE A.4.15.6 Right and Wrong Pump Suctions, one of the diagrams does show something similar to what you are proposing.
I will be on Holidays from August 12th to 21st, returning to work on Tuesday August 22nd Thanks Brett Peters General Manager Installation & Design Proudline Fire Protection Services Ltd. [email protected] 780 490 7602 office ext 202 780 490 7605 fax 780 777 0568 cell 780 718 2676 24h Visit us at www.proudline.ca Proudline now offers ULc listed monitoring services, please contact [email protected] for more information On Fri, Jul 14, 2023 at 10:37 AM Fpdcdesign <[email protected]> wrote: > I am working on a pump house that has a 1500 gpm pump with an 8” suction > line (no reducer). There is an elbow in the suction line parallel to the > pump shaft with a piece of pipe that is 38” from the suction flange and > there is a problem with the test. We have to add another 42” from the > parallel elbow to the flange. There is physically not enough room in the > pump house to make it in a single straight run. My proposal is to turn the > offending elbow looking up (so no linger parallel), add a 42” vertical > piece to an elbow and pipe that back to the discharge from the backflow > preventer. Can the 80” be split into 2 pieces? NFPA 20 says nothing about > that but I was wondering how it works in real life. > > FYI, the backflow discharge is already over the 80” threshold. > > Todd G Williams, PE > Fire Protection Design/Consulting > Stonington, CT > 860-535-2080 (ofc) > 860-554-7054 (fax) > 860-608-4559 (cell) > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > [email protected]
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