Positive. They are NPS (straight) thread and actually work on a compression fitting basis and are poor choices when interfacing with NPT (taperred). Each piece had a built in cone or cup and that is the sealling surface. Snug plus a 1/4 turn is all that is needed and NO TEFLON TAPE! When attached to a pipe as in the picture the edges of the pipe just grind into the plastic cone and destroy it. Then it leaks so someone gets teflon tap but then the threads get too tight and crack as in the picture.
Josh On Jan 27, 2015 8:15 AM, "Marek Dziedzic via CnC-List" < cnc-list@cnc-list.com> wrote: > Are you sure that they are not the PVC fittings that you get at Home > Depot or Lowes? They look to me very similar to what one would use for the > cottage water supply lines. > > Marek (in Ottawa) > > *From:* Kevin Driscoll via CnC-List <cnc-list@cnc-list.com> > *Sent:* Tuesday, January 27, 2015 12:59 AM > *To:* C&C List <cnc-list@cnc-list.com> > *Subject:* Stus-List Gray PVC plumbing fittings source? > > > I am having difficulty finding a source for the press/nipple fitting on > the gray semi rigid PVC plumbing for our water system on our 89 30-2. One > of the fitting s has been weeping a bit at the Raritan 6 gallon hot water > tank I replaced recently. I suspect they are not intended to be reused or > it was deformed by over torquing by amateur marine plumbers such as myself. > Any leads? Has everyone moved on to PE and quick connect fittings? > > I don't have a good photo except of the old heater before I removed it. > The image is looking down onto the heater with the water supply on the > right. The broken coupling was someone else's doing but was water tight. > https://docs.google.com/file/d/0BwhcX19YaPJ8ZmlnVkEzTTVySXM/edit?usp=docslist_api > > Thanks again. > > ------------------------------ > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > > _______________________________________________ > > Email address: > CnC-List@cnc-list.com > To change your list preferences, including unsubscribing -- go to the > bottom of page at: > http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com > > >
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