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Old 09-25-2013, 03:38 PM   #1
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Rusty and failing galvanized system to replace


I recently finished my entire house re-plumbing project with pex and a 36-port Viega manabloc manifold. It installed fast and was relatively easy.

Now, I have a friend's house that is still on a main line galvanized pipe (rapidly failing) that then converts to copper and pex. She is getting brown water through every fixture (bathroom, toilet, kitchen sink, ice maker, etc.) that only clears after running the water for several seconds. If the fixture remains off for more than an hour, the process of clearing the gunk needs to be repeated.

Assuming I can unscrew the galvanized joint, before the main shutoff, and replace the entire system with pex, what are the odds the rust will clear up? The pipe from the meter to the shutoff is still galvanized as you can see in the pics. Would it need to be replaced as well? I've only seen copper coming into a house so this area is a little uncharted for me. Any rough estimates what replacing the entire system would cost for 12 hookups and a new run to the water heater? $1k-2.5 in labor?

Now for pictures of this mess!
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Old 09-25-2013, 05:40 PM   #2
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Rusty and failing galvanized system to replace


IMO, the rust would clear up and you would get better water pressure if you replace all the old galvanize pipe right to the meter and be done with it. Not that much more work or money and easier. You may have to get your city involved and coordinate it with your plumber. Idk.

There's probably a union right at the meter, take it apart there, go all new and be done with it.

The problem with old galvanized threaded pipe when there are no unions to take the pipe apart (as in your case), is that when you loosen one end your tightening the other. The pipe would have to be cut somewhere so you could unscrew it. Pita. The way those joints look, I wouldn't even bother. Get rid of it.

In the picture which shows where they converted to copper and sharkbyte quick connectors, nice job. From there, continue with your new copper or pex and get rid of all that old galvanized pipe.

Is this going to be a diy project or are you going to be hiring a pro? Estimates do vary. It's hard to give an estimate to replace the entire sytem with 12 hook-ups and hwh run. It's best to get a couple of estimates from some local pros in your area. Looks like a lot of old galvanize pipe that still needs replacing.


Last edited by jmon; 09-26-2013 at 06:04 PM. Reason: additional information
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Old 09-25-2013, 09:55 PM   #3
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Rusty and failing galvanized system to replace


I bet you couldn't even get a pencil inside some of that old galvanized pipe.
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Old 09-26-2013, 07:02 AM   #4
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Rusty and failing galvanized system to replace


Quote:
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I bet you couldn't even get a pencil inside some of that old galvanized pipe.
A pencil through?!?
The last old, galvanized pipe I replaced -
Maybe, something like - 1/8th inch opening!
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Old 09-26-2013, 05:28 PM   #5
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Rusty and failing galvanized system to replace


I would suggest you contact a plumbing company that knows how to push a water line to the main. That involves the least amount of digging in the front yard.
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Old 09-27-2013, 10:17 AM   #6
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Rusty and failing galvanized system to replace


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I bet you couldn't even get a pencil inside some of that old galvanized pipe.
That was nearly the case with my pipes.


I bet these are even worse.
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Old 09-27-2013, 11:37 AM   #7
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Rusty and failing galvanized system to replace


As I suspected. Thanks, nice photos. Get rid of the rest of that old galvanized pipe and you should be good to go.


Last edited by jmon; 09-27-2013 at 11:43 AM.
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