There's certainly nothing wrong with asking the
shop-talk gurus, but for that sort of situation I
would walk into a plumbing supply store and tell
them what I have and ask for a fitting. I'm sure
the situation has come up before. As far as I
know, there hasn't been any major shift in sizes
in the last 25 years. My house was built in 1985
and fittings I buy work just fine with the
original pipes. Maybe the coiled tubing is the
problem. I have never tried connecting regular fittings to that.
At 01:07 PM 10/20/2018, john niolon wrote:
>When we built my house/shop 25 years ago I had
>the plumber install a 3/4â?? water line to the
>shop and cap it off. I was going to put in the
>sink and the outside faucet when I got time. Well, this week I got time
>I cut the cap off and test fitted a 3/4â?? Tee
>to start dry fitting the plumbing for
>sink/faucet. The Tee wouldnâ??t fit on the
>tubing. I cleaned it well but the Tee was still
>too small to fit over the tubing. It looks like
>he used coiled tubing, or at least thatâ??s
>whatâ??s coming up thru the concrete. I tried
>several fittings and even cut the tubing lower
>to see if it was crimped or out of round... it
>micâ??d the same all the way around it in several places
>I micâ??d the tubing and the fitting and hereâ??s the results
>tubing i.d. is .882â?? which is just over 7/8â??
>tubing o.d. is .900â?? which is just under 29/32â??
>a new standard Tee i.d.is .876â?? which ainâ??t gonna fit over .900
>if I can find one fitting to get this to
>standard 3/4â?? size Iâ??m good to go...
>did the old stuff differ from todays standard â??
>after researching fittings a little I see that
>there are several â??typesâ?? of fittings....
>from plumbing to hvac to whatever...
>anyone wanna try and give me some guidance
>here... the net is confusing and offers little on actual dimensions
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