The FDC is in the yard of a drug and alcohol treatment center. Yes, the cement covered pipe is the underground from the FDC to the pit with the sprinkler line to the builidng.
I am not sure if we have a hole in the underground piping or not. I want to try other remedies before digging a 5 foot hole in the ground . We drilled a hole in the pipe for a ball drip because 1. There is no provision for a ball drip valve in the 581 Cla Val check valve. 2. All of the FDC piping I have seen has a ball drip valve 3. NFPA 13-2007 Figure A.8.17.2(b) shows a ball drip -------------------------------------------------- From: "Matt Grise" <[email protected]> Sent: Thursday, April 22, 2010 5:31 AM To: <[email protected]> Subject: RE: Leak in FDC > Doug, > > Just to clarify: > > This is a remote FDC? The cement covered pipe is the underground run from > the building to the remote FDC? The problem is water leaking out of the > FDC hose connections? > > Also: > Why did you drill a hole in the cement covered pipe? > > Matt Grisé PE*, LEED AP > Subject: Leak in FDC > > We are still having problems with an FDC leaking. We replaced the FDC, > removed the ClaVal 581 check valve and cleaned it. We drilled a 2" hole > in a cement covered pipe and found one hole drilled is the life span of > the hole saw. Drilling the pipe makes a horrible noise also. > > But we still have water being introduced into the underground pipe. The > cement covered pipe screws into a 4 inch galvanized pipe that exits > vertically from the ground. We could have a leaking 581 valve, we could > have a leak in the pipe and are having ground water forced into the pipe. _______________________________________________ Sprinklerforum mailing list [email protected] http://fireball.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)
