Are they really two systems? They sound like one system with two sectional valves.
Ed Vining On Sun, Mar 8, 2009 at 6:15 PM, Forest Wilson <[email protected]>wrote: > I'm sorry the other system is about 45,000 sq ft .... 90,000 total for > both. > Why do I need the relief valve if there is no check valve between the two > systems? > ------Original Message------ > From: Rod DiBona > Sender: [email protected] > To: [email protected] > ReplyTo: [email protected] > Subject: RE: relief valve on gridded system > Sent: Mar 8, 2009 8:42 PM > > I think the relief valve is needed and I also think that you need > another system....90,000 ft on the second? > > Rod DiBona > Rapid Fire > > -----Original Message----- > From: [email protected] > [mailto:[email protected]] On Behalf Of Forest > Wilson > Sent: Sunday, March 08, 2009 12:44 PM > To: [email protected] > Subject: relief valve on gridded system > > We have a building with two wet systems fed from same riser manifold. > There is a detector check valve on the manifold. > The two wet systems do not have their own check valves. One of the > systems is gridded protecting about 45,000 sq ft. The other system is > not gridded, protecting about 90,000 sq ft. > Am I correct in assuming that a relief valve is not needed because the > pressure will equalize between the two systems? > The risers indicate the same pressure. > > Forest Wilson > Cherokee Fire Pro. > Sent from my Verizon Wireless BlackBerry > _______________________________________________ > 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]<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]<to%[email protected]> > (Put the word unsubscribe in the subject field) > > > Sent from my Verizon Wireless BlackBerry > > _______________________________________________ > 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]<to%[email protected]> > (Put the word unsubscribe in the subject field) > -- Ed Vining 4819 John Muir Rd Martinez CA 94553 925-228-8792 _______________________________________________ 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)
