NFPA 20 Table 4.27a - In the suction side of the chart there are a few notes for the suction pipe, note b states that the minimum suction size is only for the portion of piping specified in 4.15.3.3. They want the the water flow into the pump to not exceed 15ft/s, the rest of the feed line can be smaller as long as it's capable of providing the required flow at a positive pressure.
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 Thu, Nov 10, 2022 at 7:06 AM Brian Harris <[email protected]> wrote: > Sizing a pump for an existing warehouse, 85psi @ 1500gpm, calls for 8” > flanges. NFPA-20 (2013), 4.14.3.3 states 10 pipe diameters upstream of > suction flange. Existing stub-up is 6”, safe to assume some underground > work is in order? > > > > *Brian Harris, CET* > > BVS Systems Inc. > > Design Manager > > bvssystemsinc.com > > Phone: 704.896.9989 > > Fax: 704.896.1935 > > > > > > _________________________________________________________ > SprinklerForum mailing list: > https://lists.firesprinkler.org/list/sprinklerforum.lists.firesprinkler.org > To unsubscribe send an email to > [email protected] >
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