Other than the turbulence, which was deemed acceptable for the condition where the relief is piped back to suction under #20, the pipe running from the tank to the suction side of the pump is the same "chamber" as the tank- unless there's a OS&Y right on the suction nozzle of the tank- and if you're running the pump, one would expect that to be open unless you're attempting high temperature test for air bubble growth- and you'd be better off piping relief to suction, since if the tank valve was closed, the relief to suction would be all you've got going into the pump! the relief valve would, of course, be open sincethe temp elevating would increase pressure on the air caused by turbulence, assuring a reliable supply of air and water to the suction side.....
glc -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Friday, March 20, 2009 9:16 AM To: [email protected] Subject: RE: Fire Pump relief valve discharge Any problem dumping the relief discharge back into the tank? Thank You Rahe Loftin, P.E. Region 7 - GSA Office - 817-978-7299 Fax - 817-978-8644 Cell - 817-371-3102 _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field) _______________________________________________ Sprinklerforum mailing list http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum For Technical Assistance, send an email to: [email protected] To Unsubscribe, send an email to:[email protected] (Put the word unsubscribe in the subject field)
