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Old 12-08-2009, 05:06 AM   #16
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Fixing a bad bathroom plumbing job with Pex


Thanks Ismael. Just goes to show there are things on the market I've never seen. While that isnt a wye, I could see a mixing valve in a wye configuration.

If you do install something like what Ishmael posted, thedudenator, be sure to maintain accessability to service the valve in the future.

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Old 12-08-2009, 09:19 AM   #17
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Fixing a bad bathroom plumbing job with Pex


I was not planning on running the hot/cold to the toilet.
I was planning on cold only and see how it goes.

I do have a question on the shut off valve size.

I have 1/2 running to it, but most all the valves at menards are 1/2 compression to 3/8 thread
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Old 12-09-2009, 01:32 AM   #18
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Fixing a bad bathroom plumbing job with Pex


the green stuff After sweating, your supposed to wipe off excess FLUX paste so it does not oxidize into the green stuff.
if you run off the toilet your going to have exposed pex pipe? to the sink. do you want that??
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Old 12-09-2009, 07:46 AM   #19
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Fixing a bad bathroom plumbing job with Pex


The back of the wall is exposed.
The sink and toilet will have direct individual lines.
PEX in the wall, then copper stub-outs.
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Old 12-26-2009, 03:45 PM   #20
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Fixing a bad bathroom plumbing job with Pex


I have all of the PEX plumbing done, piece of cake!!

This is a photo of some corrosion. This is typical around every valve.
But I now have 3 valves that are drip leaking.
I am putting a wall up to relocate the well tank, softener and water heater.
Then all new pex will be ran...

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Old 12-26-2009, 07:13 PM   #21
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Fixing a bad bathroom plumbing job with Pex


Your using cheap plastic pex ftgs.,you are installing a valve on your toilet supply that is going to cause you problems when the small internal checks foul causing you to have warm water at all of your cold water outlets making your water heater work more and your worried about a little oxidation on your copper joints,go figure.
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Old 12-26-2009, 11:56 PM   #22
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Fixing a bad bathroom plumbing job with Pex


Huh?? Log in drunk?
Your using cheap plastic pex ftgs.,you are installing a valve on your toilet supply that is going to cause you problems when the small internal checks foul causing you to have warm water at all of your cold water outlets making your water heater work more and your worried about a little oxidation on your copper joints,go figure.

PEX is cheap? The fittings cost more then copper
I REMOVED the valve - not installed it...
The oxidation is on valves that LEAK.. So I should let them leak so I can find something more expensive then PEX?
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Old 12-27-2009, 10:15 AM   #23
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Fixing a bad bathroom plumbing job with Pex


Did you log in stupid!Even brass pex ftgs.have been known to break with to much stress on them.Plastic ftgs.on the hot side can deform resulting in leaks.Go on the internet and look up lawsuits on this matter.Hot water cavitation occurs because it expands and try,s to equal this out through the cold water line.When the internal checks on your non tempered mixing valve foul or stick open that's what happens.
Are you a licensed plumber? Did you get a permit?Will the plumbing inspector check out your rough-in and do a final inspection? I use pex with the BRASS barb ftgs,Warsbo expander system with matching ftgs.and gator grips.I did come about rather harsh but when you indicated you were using plastic pex ftgs.I'm sorry,thats cheap!
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Old 12-27-2009, 12:37 PM   #24
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Fixing a bad bathroom plumbing job with Pex


I still suggest that you READ before you post.
I did NOT INSTALL A MIXING VAVLE - I removed it!!

Am I a licensed plumber?? If I was would I be asking questions on a DIY Forum??

So from your insight, this is what I did correct:
  • Removed mixing valve
  • No plastic on hot side - I have copper and PEX only
And from your insight this is what I did not do correct:
  • Used plastic on cold side - the "better" option would have been copper
  • I am not a licensed plumber
  • I did not obtain a permit to repair existing plumbing
Based on this, I think I will be able to sleep at night.

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