DIY Chatroom Home Improvement Forum

DIY Chatroom Home Improvement Forum (http://www.diychatroom.com/)
-   Plumbing (http://www.diychatroom.com/f7/)
-   -   Galvanized nippe rusted through (http://www.diychatroom.com/f7/galvanized-nippe-rusted-through-187446/)

jimmy21 09-22-2013 08:53 PM

Galvanized nippe rusted through
 
I just bought a house that was built in 1948. The valve under the bathroom sink was leaking, so today i decided to try to fix it. After getting the valve off, i figured out that the problem was probably caused by the nipple being too far rusted out. Im half tempted to just rip out the cabinet, open up the drywall, crawling under the house and replacing as much of the galvanized pipe as i can with pex, but on the other hand im planning a pretty substantial remodel in the next year or two, and itd be nice to do a quick easy fix for now. If i just put a pipe wrench on the nipple and start spinning, what are the odds that the nippe will just unthread and i can just thread in a new nipple?

oh'mike 09-22-2013 09:03 PM

The odds? 50/50 ? What choice do you have?

Be careful and try it--you are right--1948 the whole system is past due for changing.

Here is a life saving part----the 3/4" compression fitting.
This common repair part allows you to saw off a 1/'2" galvanized pipe--

Add the compression fitting---add 3/4" copper to the other side--bush down to 1/2" copper and make a replacement ----

This is a handy thing to know if the pipes start breaking off when you unscrew.

jimmy21 09-22-2013 09:12 PM

Quote:

Originally Posted by oh'mike (Post 1245242)
The odds? 50/50 ? What choice do you have?

I wasn't sure, on one hand i could see them always unthreading just fine, i mean after all, they are threaded, its not like they are welded. On the other hand, i could see them breaking off nearly 100% of the time, I mean, 65 years of rusting together, and its so bad, its formed a hole in the pipe, theres no way those pieces are coming apart. I figured you plumbers must have some kind of % on success rate.


Quote:

Originally Posted by oh'mike (Post 1245242)

Be careful and try it--you are right--1948 the whole system is past due for changing.

Here is a life saving part----the 3/4" compression fitting.
This common repair part allows you to saw off a 1/'2" galvanized pipe--

Add the compression fitting---add 3/4" copper to the other side--bush down to 1/2" copper and make a replacement ----

This is a handy thing to know if the pipes start breaking off when you unscrew.

I think i'll just go this route. I don't care if it looks cobbled together for now. Probably not next summer, but the one after im planning to do a major addition, move the kitchen, add some bathrooms. It'll be a much better time to re plumb the house. Not to mention i have about a million projects to get done on this house, and no money to do them, since i just spent it all putting 20% cash down.

oh'mike 09-22-2013 09:22 PM

That fitting has been a life saver----I've been in houses that were so corroded that every pipe I tried to unscrew just snapped at the threads.

An old plumber taught me that long ago----

TheEplumber 09-22-2013 09:48 PM

Quote:

Originally Posted by oh'mike (Post 1245248)
That fitting has been a life saver----I've been in houses that were so corroded that every pipe I tried to unscrew just snapped at the threads.

An old plumber taught me that long ago----

I've never tried a comp. fitting but if you say it will work- I'd say go for it until you can get to the pex re-pipe.

I bet if you try to wrench that nipple- it's a goner...

The other option is to get a high quality nipple extractor- you won't find it at a box store either. More likely at a good tool shop.
If a pipe wrench fails, cut the nipple close to the fitting and use the extractor. Even that is not 100%

jimmy21 09-22-2013 10:00 PM

i went and got a fitting but it doesn't fit the pipe :wink:. Its too large Good thing i hadn't sawed the pipe off yet.

The one i found was 7/8 OD to 3/4 NPT. Im going to try an actual plumbing supply house instead of a box store tomorrow.


im thinking about ordering from here:
1/2" Compression x 1/2" MIPS
http://www.plumbingsupply.com/galvan...-fittings.html

oh'mike 09-23-2013 06:08 AM

I don't know if there is a compression coupling that will fit a 3/8" nipple---I've only used them on 1/2" and 3/4" galvanized----

jimmy21 09-23-2013 09:29 AM

Quote:

Originally Posted by oh'mike (Post 1245345)
I don't know if there is a compression coupling that will fit a 3/8" nipple---I've only used them on 1/2" and 3/4" galvanized----

Its a 1/2" nipple. I think the fitting I got was made for plastic. It was only slightly too large.

ask tom 09-23-2013 12:07 PM

I wouldn't trust a compression fitting on galvanized at the end of a line. The down side is too great - if it blows off you have a huge, expensive mess.

oh'mike 09-23-2013 05:31 PM

Those compression fitting are very strong,with a rubber ferrule ---these are made for the purpose.

Ghostmaker 09-23-2013 05:46 PM

Sounds insane but I found if I tighten first they usually come out easier. If your nipple still has meat.

TheEplumber 09-23-2013 05:56 PM

Quote:

Originally Posted by Ghostmaker (Post 1245613)
Sounds insane but I found if I tighten first they usually come out easier. If your nipple still has meat.

Don't give away all our trade secrets :laughing:

jimmy21 09-23-2013 11:19 PM

Quote:

Originally Posted by TheEplumber (Post 1245622)
Don't give away all our trade secrets :laughing:

Too late, now all the meaty nipples are going to be mine!

plumberinlaw 09-24-2013 12:31 PM

mike, are you talking about a dresser fitting or a compression fitting?

oh'mike 09-25-2013 06:50 AM

http://haengineering.net/images/pipe...upling-i14.jpg


All times are GMT -5. The time now is 01:29 PM.


Copyright 2003-2014 Escalate Media LP. All Rights Reserved