Corrosion is a real possibility. We have seen drops corroded shut on ferrous pipe due to water that was left within after testing (or a trip or whatever). A 'rust plug' had formed across the entire cross section of the drop.
Mark A. Sornsin, P.E. | Karges-Faulconbridge, Inc. | Fire Protection Engineer | Fargo, ND | direct: 701.552.9905 | mobile: 701.371.5759 | http://www.kfiengineers.com -----Original Message----- From: Sprinklerforum [mailto:[email protected]] On Behalf Of Matt Grise Sent: Tuesday, March 17, 2015 7:48 AM To: [email protected] Subject: RE: Pendent sprinklers on return bends on a pre-action system You could also face corrosion issues if you have drops that are filled with water. Matt Grisé PE*, LEED AP, NICET II Sales Engineer Alliance Fire Protection 130 w 9th Ave. North Kansas City, MO 64116 ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
