No to concentric on suction side--- Requires ECCENTRIC, top flat. (if this is vertical in-line, different ballgame) On Feb 11, 2016 3:58 PM, "Travis Mack, SET" <[email protected]> wrote:
> Was it ever permitted for a 1000 GPM pump to be supplied by 6" piping? > Also, was it ever permitted to put a CONCENTRIC 8x6 reducer on the suction > flange of a pump. > > We have an existing project where the owner was hoping to remove the pump > and to supply from city water. I informed them that the water pressures on > site were not compatible. They also have a pump that has been requiring a > lot of maintenance. As I looked at the as-built plans (yeah, miraculously > they had them for a building built in 1988), it shows a 6" supply for the > 1000 gpm pump and the concentric reducer on the suction flange of the pump. > > In the most recent editions of NFPA 20, a 1000 gpm pump needs an 8" > suction line. > > -- > Travis Mack, SET > MFP Design, LLC > 2508 E Lodgepole Drive > Gilbert, AZ 85298 > 480-505-9271 > fax: 866-430-6107 > email:[email protected] > > http://www.mfpdesign.com > https://www.facebook.com/pages/MFP-Design-LLC/92218417692 > Send large files to us via: https://www.hightail.com/u/MFPDesign > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
