anyone

Paul S_3

ever heard of screwed copper pipe? i have it on a job and sizes are way off.....i guess it has the same OD as steel or brass screwed pipe

KC_Jones

http://forum.heatinghelp.com/discussion/154670/plumbing-at-fallingwaters#latest

Can't help you with it, but I have seen this. According to the tour guide when they need work done it's a massive pain for their plumber.

Danny Scully

@Paul S, my crew pulled this out of a bathroom remodel a few weeks ago. It's threaded copper! 1/2 copper threaded would be 3/8 ips.

Paul S_3

This is what i had to deal with.....the pic below has a 1.5 X 1.5 X 1.25 copper sweat tee.....the 1.5 run of the tee is sweated on 1.25 threaded copper i thought it was copper sweat....i had to literally bang the threaded copper into the run of the 1.5 tee.....i have a couple more connections to make....do you guys recommend unscrewing it? or cut clean and sweat or braze?

Danny Scully

I'm sure this is a stupid question, but it's definitely copper right? Not brass? I would cut, clean, sweat or braze.

347

Don't if this helps or not. My dad started doing plumbing in the late 40's. When I was starting he told me the different types of pipe. Copper was L, M, K, DWV, BT (bending temper) and TP (threaded temper). I don't know how right he was but he told me he used once very early in his career.

STEAM DOCTOR

Maybe TP pipe. Don't quite know the history but at some point when they were transitioning from galvanized pipe to copper, they introduced TP (threadless pipe). Think that it was copper with same OD as brass. You would need TP-copper adaptors. Have only run into TP twice. Not quite sure if my description of the TP pipe is accurate. Just what I heard from some oldtimers. TP can definitely be soldered. Be prepared for some sticker shock when buying adaptors

Paul S_3

@STEAM DOCTOR definitely not brass....it was copper the color was identical and not as thick as brass.....ive soldered or brazed copper to brass a few times before and it didnt got this easy....solder just flowed perfectly.....i originally thought it was lead wiped copper joints because the joints do not look threaded ...looked some sort of metal flow.....when i vleaned it up it was grayish....thanks guys as always for your help

Paul S_3

building was built in 1893 ..... originally had a coal boiler....the only screwed brass are the DHW risers to the apartments.....you think these are original water lines ....ive worked on similar systems like this but never seen water lines like this ....this is the only closeup i have....