[Shop-talk] need some copper plumbing help from the gurus

[Pat Horne]

You might also look for either an adjustable fitting that has a rubber seal in it that is used to repair broken/leaking pipes. They have nuts on the ends that you tighten until the rubber insert clamps down tight enough to seal to the pipe. Be sure to check the pressure rating on the fitting.

 

Another thing that might work is a fitting called a “Shark Bite”. They are intended to work on PEX pipe, hold pressure & are used on copper pipe also. Don’t know the play in the fitting. I’ve used Shark Bites & have had some trouble with them leaking after some time. I wouldn’t put any in locations where they are hidden.

 

BTW, I’ve used deep sockets to swage refrigeration tubing so that it would fit over the same size tubing to join two pieces without using a coupling. Lucked out that I had a socket the right size!

 

Peace,

Pat

 

From: Shop-talk [mailto:shop-talk-bounces at autox.team.net] On Behalf Of john niolon
Sent: Saturday, October 20, 2018 12:08 PM
To: shop-talk
Subject: [Shop-talk] need some copper plumbing help from the gurus

 

When we built my house/shop 25 years ago I had the plumber install a 3/4” 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 3/4” Tee to start dry fitting the plumbing for sink/faucet.  The Tee wouldn’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 that’s what’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 mic’d the same all the way around it in several places

 

I mic’d the tubing and the fitting and here’s the results

 

tubing i.d. is  .882” which is just over 7/8”

tubing o.d. is  .900”  which is just under 29/32”

 

a new standard Tee i.d.is .876”   which ain’t gonna fit over .900

 

if I can find one fitting to get this to standard 3/4” size I’m good to go...

 

did the old stuff differ from todays standard “

after researching fittings a little I see that there are several ‘types” 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


thanks

john

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