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cubangt
Identify hot and cold water lines without a working water heater

So we were affected by the harvey flooding in houston. Had 40"+ in our home and we are in the midst of getting the home back together.  One of the issue currently is still waiting to have the water heater inspected and or replaced if its not usable. BUT in the mean time im trying to run a water line over to the new location for our fridge. Since we dont have the water heater working, little hard to run the hot water and feel the pipes. SO how can i insure that i tap into and split off the cold water line for the ice maker? Because the demo of the house was done by family and friends and volunteers, i have no idea what side was hot and cold. 

Id like to identify and complete this plumbing task so i can close off the walls and get it ready for mud and taping.. 

 

thanks.. I can provide pictures if needed, just need to go take them as i dont have any at the moment

HandyAndyInMtAiry
Re: Identify hot and cold water lines without a working water...

Then you will need to go back thru your supplpy lines until you see and can verify that someone took the time to run the cold line on the right hand side. Most of the time this is true, since it is very difficult to cross supply lines over each other. I suggest never using a saddle valve. Just use a normal sweat valve, in case you need to turn it off. Also, you cannot put any kind of valve inside an enclosed wall. This valve needs to be readily accessible.

Andrew

Handy Andy In Mt Airy NC

cubangt
Re: Identify hot and cold water lines without a working water...

Since my walls are all exposed, i was going to tap into the appropreiate line(once i can identify it) install a "Tee" and run new line over to the new location and install the connection as seen in the attached pic. 

Also to verify, right hand side referring to the right when facing / looking at the lines? if thats the case, then im set, because the right hand side is literally right next to where we want to move the fridge and will make it s a quick and easy run.

 

HandyAndyInMtAiry
Re: Identify hot and cold water lines without a working water...

I would suggest that you chase the pipe back to the source and verify that is actually the cold side before cutting it. All that you have shown in the picture is a small box with a valve that can be used to connect a water line. That is not what you need to be concerned with. I would never set any kind of connection behind an enclosed wall. I only use pipe that is long enough to reach the point of connection, like the bottom of the valve box that you have shown. The other end is in a readily accessiable location. Like in the basement. I would never use a T inside of a wall. But that is up to you.

This is something that I use to test for leaks. Put some peppermint oil in the source end and then fill the pipe with compressed air. If there is the very smallest of holes, you will smell the peppermint. You may work that to your advantage to determine the cold side. Of you could turn on the cold water to the system, turn the hot water valve off coming out of the water heater and you will feel a difference in temperature. You will also hear the water filling the pipe.

Andrew

Handy Andy In Mt Airy NC

cubangt
Re: Identify hot and cold water lines without a working water...

Not sure we are talking the same language.. In texas all our water lines run behind enclosed walls.. with only the valve connections exposed at the appropriate locations. By tee, i was referring to a copper sweat tee to tap into the existing water line and running small portion over to the location where i need it.. Attached is the connection i was referring to using. Tonight after work ill be going to work on the house, so i can take actual pictures of the area im working with. Tracing the pipe back isnt really an option, because once the lines go up into the attic / ceiling space that area is not accessible at all. I do have a old wet bar area that seems was closed off at some point before we bought the home and we found with the demo, its about 8 ft away, but not sure how easy it would be to move that line over to where i need it(just another option) That line i really dont like just sealed up behind the wall, because there is nothing there you wouldnt know or think a water line is there that can burst or just leak over time..  Ill post pictures of the existing setup and what we are trying to accomplish.

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