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Old 12-14-2015, 11:32 AM   #1
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Pex


I am going to be replacing my current plumbing of Copper with PEX. I do have some questions before i get started. Looking to get her done after xmas. I have research something and something i could not find. I like to see examples/pictures of things as i am a visual learner but also can follow written instructions, anyways here are my questions.

1. Use 3/4" for main lines and 1/2" for supplies to sink, toilet, etc.

2. How do you install a stub out in a toilet (current toilet supply stub out is close to the floor)?

3. using 90 degrees elbow on 1/2" pex pipe restrict the flow alot to affect the flow?

4. I noticed that i have two supply lines from under the crawl space going into the toilet supply line, why is this? is this an old school way of dealing with hammering with copper pipes?

5. My current water heater is currently set up with both cold and hot current copper goes through the house bottom sill plate and out to my garage as in the first picture. Ideally i think the supply lines should have been install in the wall. How should install the new lines (keep in mind that this is an outside wall, water heater is in the garage) from the crawl space through the houses bottom sill plat but then a 90 degree elbow to go up inside the wall, then a drop ear. Like in the second picture?

I would really appreciate all and any input.

Thanks.
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Old 12-15-2015, 01:24 PM   #2
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No input/opinions...
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Old 12-15-2015, 01:27 PM   #3
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What is wrong with the existing Copper? If it is not broken, there is no need to fix it.



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Old 12-15-2015, 01:45 PM   #4
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Originally Posted by gregzoll View Post
What is wrong with the existing Copper? If it is not broken, there is no need to fix it.
The house was built in 1964 and earlier this year i went down in the crawl space because of a leak in the bath tub drain and overflow and noticed that the copper water pipes looked greenish/black at the bottom. After seen the copper pipes like that I am sure they are the original ones. i think it's time to change them out. The first picture shows what i am mean.

The second image is the two copper water lines that go into toilet, again i am not sure why there is two?

I was really appreciate any and all feed back.
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Old 12-15-2015, 01:48 PM   #5
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To stub out toilet, install PEX drop ear elbow in wall and come out of wall with a chrome nipple.
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Old 12-15-2015, 01:57 PM   #6
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The 2 pipes for the toilet looks like a water hammer arrestor. Small pipe is supply, large is the capped air chamber. You could do the same with PEX.
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Old 12-15-2015, 01:58 PM   #7
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To stub out toilet, install PEX drop ear elbow in wall and come out of wall with a chrome nipple.
I was considering installing a stub out and sweat a threaded adapter (like this one) and use a threaded stop valve. I never thought about just doing a drop ear, do you have any examples on how to install it? why chrome over brass, just for looks?

I still would like to know what those two pipes are for?
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Old 12-15-2015, 02:02 PM   #8
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The 2 pipes for the toilet looks like a water hammer arrestor. Small pipe is supply, large is the capped air chamber. You could do the same with PEX.
oh ok thanks that's what i was thinking but wasn't sure. so do i need install water hammer arrestor on toilets with pex? What else do you recommend installing water hammer arrestor on?
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Old 12-15-2015, 02:03 PM   #9
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My opinion, my method looks best. Yes, chrome looks better than brass or copper.
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Old 12-15-2015, 02:04 PM   #10
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If you use a copper stub, use a compression stop or a sweat stop instead of a male adapter (that looks like $hit.)
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Old 12-15-2015, 02:08 PM   #11
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so do i need install water hammer arrestor on toilets with pex? What else do you recommend installing water hammer arrestor on?
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Old 12-15-2015, 02:23 PM   #12
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I have never used them. Maybe on a washing machine.
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Old 12-15-2015, 03:51 PM   #13
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That Patina is just cosmetic. It comes from not wiping all remaining flux off of the lines. If it is not leaking, leave it alone.



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Old 12-15-2015, 03:58 PM   #14
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Is your toilet supply in the wall or floor?
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Old 12-15-2015, 05:24 PM   #15
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Quote:
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I have never used them. Maybe on a washing machine.
Thanks for ur input, really appreciate it.
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