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Questions tagged [pex]

PEX (cross-linked polyethylene) is a flexible plastic pipe that has gained popularity due it being cheaper (and often easier) than copper or PVC. Use for questions about working with the pipe, and use with the [plumbing] tag

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21
votes
20answers
178k views

What is the advantage of PEX pinch clamp vs. crimp rings?

I just saw these for the first time today at Lowe's: The advantages I can see over the crimp style are: A single tool can work with multiple PEX sizes That single tool is cheaper than a single-size ...
14
votes
6answers
32k views

Best way to keep a PEX run in an attic (above a foyer) from freezing?

I plan on running PEX pipes both hot and cold across 16 feet of unheated attic space above a foyer. The foyer is 16' long and is off the kitchen, it isn't heated directly but is part of the house; it ...
26
votes
14answers
55k views

Does Pex tubing have any advantages over copper?

What are the advantages/disadvantages of Pex tubing? How does it compare to copper?
18
votes
3answers
4k views

Why would you use copper over CPVC or PEX?

Are there any advantages to using copper rather than CPVC or PEX?
3
votes
3answers
2k views

Is copper piping required within a certain distance from a water heater?

I have read that National Code requires you to use copper for 18 inches from your water heater. How can I do this when everything existing is PEX? I need to replace my existing low boy water heater ...
1
vote
1answer
129 views

Is PEX exposed to the environment OK to use?

In preparation for a big job I found some PEX on craigslist. It appears to have been exposed to the elements but all in all it looks fine. http://images.craigslist.org/00J0J_kqRj1PQAivO_600x450.jpg ...
0
votes
3answers
7k views

Galvanized pipe life expectancy

USA, NW Oregon, single-story house with crawl space, built 1972. Background The house has the original galvanized piping in the crawl space and suffers from low water flow in two bathrooms. Static ...
16
votes
16answers
76k views

Is it worth it to insulate hot water PEX tubing?

Is it worth the time and expense to put the foam pipe wrap on pex hot water pipes? I've seen mixed statements. What is your thought? But more importantly, can you back it up?
9
votes
8answers
26k views

Why is my brand new PEX clear tubing turning green near the water heater?

I just moved into my house with brand new PEX (uponor) plumbing. I used clear for the hot and cold instead of red and blue, because I bought everything myself and I thought it would prevent wasting ...
6
votes
1answer
27k views

How do I tap into the PEX water supply line?

The water supply line for my ice maker was never connected. So I want to know how to tap into the PEX water supply line to allow connection to the ice maker.
5
votes
4answers
17k views

Is it possible to use a hot water recirculation pump with a PEX home run system?

I am interested in getting a hot water recirculation pump installed so that I can get hot water faster to each of my faucets. From looking at the picture and researching I believe I have PEX in a "...
4
votes
1answer
3k views

Can polyalloy (plastic) pex fittings be used with both styles of attachment rings?

Some pex fittings are made of a type of durable plastic known as polyalloy. Examples: These fittings appear to be plastic equivalents of their brass counterparts. In general is it permissible to ...
3
votes
1answer
541 views

Do I need to angle/pitch pex tubing for draining in the winter?

I've never installed any plumbing before, but I'm going to try to install an outside faucet/sillcock because it seems fairly simple. The only interesting part is that the pex tubing will be run under ...
2
votes
3answers
8k views

Should a water distribution manifold consist of a circular loop?

I'm replacing the copper in my house with PEX tubing and I'd like to set up my new utility room with hot water and cold water manifolds. Each connection on the manifold would then lead to either hot ...
0
votes
2answers
298 views

Can you re-crimp the end of a PEX tube?

If you take apart an existing PEX connection, is it going to perform correctly if you re-crimp the same end of the tube - without cutting it - to a new fitting? Often with PEX you can flex it a bit ...
0
votes
4answers
1k views

Using PEX as wire conduit

I have some 1/2" PEX-AL-PEX left over and thinking about using it as conduit for ~20' ethernet or phone cable. Pipe is appropriately orange. Will the aluminium layer provide RF shielding? (assuming I ...