If the FDC and Check valve are at end of main and the check valve is near the bottom of drop to the FDC, after a system trip (testing or for real) would anyone remember to drain that portion of pipe that has trapped water? My two cents worth.
Bryan A. Dann Dannba Design Services, LLC Fire Sprinkler Designs Office: (740) 363-5878 Cell: (740) 803-0967 [email protected] -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Tuesday, May 19, 2009 11:51 AM To: [email protected] Subject: RE: FDC for Dry Pipe Systems I know this. But why? And how critical is it? Ron and Garth have given some compelling reasons. Are there any other thoughts? I'd like to know why it is being done, and how critical it is for the system. Tony -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Arthur Tiroly Sent: May 19, 2009 9:04 AM To: [email protected] Subject: RE: FDC for Dry Pipe Systems The connection from the FDC must be below the DPV and the connection tee must be above a swing check in the riser in most every case. Arthur Tiroly ATCO Fire Protection Design Tiroly and Associates 3300 King Ave Cleveland, OH 44114 216-621-8899 216-570-7030 cell -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of A.P.Silva Sent: Monday, May 18, 2009 7:21 PM To: [email protected] Subject: FDC for Dry Pipe Systems The FDC is required to be connected between the main control valve and the dry pipe valve. I'v always thought this might be due to possible air leak from the FDC check valve, if it's connected on the dry side, downstream of the dry pipe valve. Is this the reason? For a project having a single dry system, the contractor has connected the FDC downstream of the DPV. The system seems to be holding. Any comments? Tony _______________________________________________ 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) _______________________________________________ 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)
