no. The individual return bends are required ao that as water passes the openings it will not deposit anything into the drop piping. In this "remodeled (read "cheap") version" all sediment that enters the line or originates within the line will deposit into every drop pipe until the sediment is all used up. This will happen with every filling AND with every draining of the system as well as during a response to a fire. Your contractor knows better or at least he should. Cheap is cheap, but not always compliant.
Garth ----- Original Message ----- From: "A.P.Silva" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Thursday, May 08, 2008 9:34 AM Subject: RE: Return Bends > I know it doesn't seem right. But is it achieving its intent? Return bends > are used to prevent scale and other sediments being trapped at the head. To > some extent, at least except from the individual branchline, won't this be > achieved? > > Tony > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Garth W. > Warren > Sent: May 8, 2008 5:07 AM > To: [email protected] > Subject: Re: Return Bends > > what is being proposed to you is a line on a riser nipple off of the main > NOT return bends. The return bend is there for a reason and what is being > proposed to you does not serve the purpose. The suggestion should be > rejected. > > Garth > > ----- Original Message ----- > From: "A.P.Silva" <[EMAIL PROTECTED]> > To: <[email protected]> > Sent: Wednesday, May 07, 2008 11:08 PM > Subject: Return Bends > > > > I have a situation, dry system running in heated space below the attic in > > part of the building. In other parts, within the attic space. Where it is > > running in the heated area, sprinklers are pendent type. So the need for > dry > > pendents or return bends. The contractor doesn't want to install > individual > > return bends for each pendent head (for cost reasons). Instead he is > > proposing to make the entire branchline as the return bend. The branchline > > to have a riser at the connection to the main. Then from the branchline > drop > > down directly to each pendent head. Any problems? > > > > Tony > > > > _______________________________________________ > > Sprinklerforum mailing list > > [email protected] > > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > > (Put the word unsubscribe in the subject field) > > > > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum > > To Unsubscribe, send an email to:[EMAIL PROTECTED] > (Put the word unsubscribe in the subject field) > _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/mailman/listinfo/sprinklerforum To Unsubscribe, send an email to:[EMAIL PROTECTED] (Put the word unsubscribe in the subject field)
