Tom, Some time ago one of my clients seem to have had a similar problem and he purchased a gasket shim kit from a pipe fabrication house which specialized in welded flange pipe segments. From client the firm had gaskets that were slipped in between standard flat flange gaskets to take up angular flange face misalignment. I cannot remember the name of the firm and my client contact has pasted on to a better place. That is what happens when you gain enough experance.
Have a fire safe day. Regards Jim Davidson Davidson Associates Fire Protection * Medical Gas * Code Consulting 302-994-9500 Fax:302-234-1781 -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Tom Duross Sent: Friday, February 11, 2011 3:16 PM To: [email protected] Subject: RE: misaligned flanges Thanks for the responses, I thought the thread was dead (no pun). The system side is 1/8" lower than the street side so something has to spring or the riser shortened and it's 8" s40 threaded into flanges, 40 years old. Pipe stands are what I plan to use, 3/4" rod inside 3/4" pipe with a 10" riser clamp around the wafer check and brackets for 30 degree braces to the wall. They were never lined up right I found when it dropped and it's right below a 4' duct where the valve-check-valve assembly is, so no way to hang from structure. There also is no o-ring (as one might expect), just flat faces to mate to the OS&Y flanges. I was thinking of some RTV sealant as a high tack to hold the gaskets and maybe help seal but I'm still going to have misalignment which is my original quandary. Use really long wrenches on the 3/4" rods? Double gaskets? More hangers will not work. The pipe develops "memory" and springs to that spot. Pipe stands can help, but often there is other stuff in the way. Short of chasing the leak around the flange, gaskets are the only control. Are crush gaskets still available? Matt Sent from my phone thingy. _______________________________________________ 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) _______________________________________________ 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)
