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Posted by John Gilmer on February 17, 2007, 10:12 pm
> > > I don't understand. I AM trying to go from copper to plastic. Are you
> > > talking about the ones with the hose type, rotating fitting?
> >
> > You are going from a female copper/brass to male plastic (if I read
things
> > correctly.)
> >
> > I was suggest that (if the situation permits) you should go from 1/2"
copper
> > tubing to a female plastic adapter.
>
> <snip>
>
> Any reason for recommending the female plastic?
>That goes against all
> the advice I have seen. I also had the benefit of using a female
> plastic to iron transition. Got to dig it up in the spring to fix the
> leak caused by the female adapter splitting on the casting line.
>
I'm talking about the adaptors that have a elastic ring which actually seals
the connection. Short of the plastic cracking, the seal should be sound
regardless of on expansion due to temperature.
> The only leaks I have ever had other than the above (and I've done a
> lot of plastic over the years) was in using 1/2" size. Never a big
> leak and fortunately were always in my basement so it wasn't a
> problem. I just let them go and they sealed themselves after a time.
Threaded joints (with dope) often seal themselves. Occasionally, a sloppy
solder joint will do the same thing. The sealing depends upon there being
some crap in the water to slow down the leak and some minerals to really
seal things up.
>
> Harry K
>
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