Tony, I agree with your "why." My experience with "zoned" dry systems (remember those where yo put check valves on cross mains so you only had to decompress the cross main that the open head was on, the bulk main and the riser) has been that the checks are unreliable and leak so that you actually have a much larger system and increased trip times instead of the reduced trip time you were shooting for. If those end up leaking then why not a totally dry FDC? Get that thing wet a few times. Grow some splooge on it. Let the elastomer dry out for a couple of years. It'll leak sooner or later.
On Mon, May 18, 2009 at 4:21 PM, A.P.Silva <[email protected]> wrote: > 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) > -- Ron Greenman at home.... _______________________________________________ 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)
