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

25 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
1k views

Pulsing water with PEX tubing?

Our home is plumbed with PEX tubing, from what I can tell. When summer started, the shower started running hotter, so we turned down the shower lower and lower. But when we reached a certain place ...
1
vote
0answers
76 views

Can PEX be routed through existing Copper Pipe?

We have a kitchen island with a faucet/sink and the existing copper pipe under the tile floor has sprung a leak. The plumber is suggesting to run a PEX pipe through the existing copper pipe to restore ...
1
vote
0answers
31 views

Replace Copper Pipe & Gate Valves With PEX Pipe & SharkBite Ball Valves & Fittings

Summarize the problem My 35 year-old home's water supply gate valves and outdoor hose bibbs are very difficult to turn on and off. Provide details and any research The primary water supply comes in ...
1
vote
0answers
85 views

Can red dye cause premature failure in pex tubing?

I've been told that red pex had a higher failure rate because of some flaw introduced by the red dye in it. Has anyone heard anything like that? I can't find anything online about it so far.
1
vote
0answers
35 views

What is the minimum thickness of concrete above hydronic heating pex

I am doing a diy hydronic heating system in a house I bought in the mountains. For the main part of the house I am using 3/4" x 9" strips of plywood with spacing for the tracks of the 1/2&...
1
vote
0answers
53 views

Water flow/pressure drop

When I was installing a tankless water heater in a new location - I decided to replace my 1/2 copper with 3/4 pex as part of the project. However, after turning on the water back on if more than one ...
1
vote
1answer
467 views

PEX Line Toilet Water Supply Disconnect

I just bought a house built in 1984 it has PEX plumbing. I need to remove a toilet to install a new floor and I noticed the water supply line to the toilet connects to a water shut off valve that I’ve ...
1
vote
1answer
3k views

Installing PEX pipes close to heating vents

We are renovating all the bathrooms in our house that was built in the early 70s. The plumber has replaced most of the copper pipes with PEX tubing. He has not replaced copper entirely and has ...
1
vote
0answers
80 views

Tapping into existing 3/4" supply and 3" drain to add washer

I understand there are a lot of variables to something like this, so I'm going to try to provide enough detail that people can at least understand the question here: I have a washer/dryer I'd like to ...
1
vote
0answers
58 views

Concealing PEX indoors with a metal hat channel

I'm replacing the galvanized incoming cold line with PEX. The incoming line runs into the exterior wall of the home about a foot from the ground, then goes down the wall, through the sill plate into ...
1
vote
0answers
213 views

What Pex system and re-design would you use for this small bungalow update - Floor Plans Attached?

There is a small Bungalow in the Midwest that I have attached two new design drawings for. Its a smaller 740sqft home with a 1st floor and current unfinished basement. I wanted to see if the group ...
1
vote
0answers
241 views

Can Zurn oxygen barrier pex radiant heating pipe be used for potable water?

Is it safe to use some oxygen barrier Zurn hydronic heating pipe for potable water?
1
vote
0answers
154 views

Replumbing a Four Family with PEX

Glad I found this site, happy to be on here and I look forward to learning from the crew and sharing. In any case, I'm in the process of buying a four family. I have it under contract, am buying at a ...
0
votes
1answer
38 views

Hot and cold 1/2 pex, straight run for outdoor shower, pvc 1.25 is that too narrow for both runs.?

Outdoor hot and cold faucets, idea was to attach 1/2 pex to faucets and run through 1 1/2 pvc piping about 12" under ground for an Outdoor sbower, before pavers are installed. Both pex lines ...
0
votes
0answers
124 views

Running PEX exposed along garage ceiling for spigot

I was planning on running PEX-A from my basement, through my garage to the exterior cement brick wall (20-30 ft) and down where I'd like to put a small spigot (maybe will a small run of copper along ...
0
votes
2answers
235 views

For a bathroom pex plumbing should I go with trunk-branch or with a home run manifold plumbing layout?

Below is the layout of my bathroom and my starting point are the red/blue vertical copper pipes you see in the picture. The walls you see will be tiled so not sure how much sense would make to have a ...
0
votes
0answers
33 views

heating system backwards?

I have an outdoor wood boiler about 40' from my house. It is piped to a heat exchanger on the water tank, and then to the oil furnace(doesn't burn oil). I think the supply and return have been ...
0
votes
0answers
16 views

PEX / CPVC leak-test

The leak check includes a visual self-inspection of each end of a pressurized new PEX pipe. The PEX is to be piped into existing CPVC: the plan is to leak-check every 12 hours. How many days should ...
0
votes
0answers
128 views

Adding a second shower head from 1/2" PEX

I want to add a second shower head in our shower. Ideally both heads would be controlled by their own temperature and pressure valves. I do not want to run any new lines from the manifold however. We ...
0
votes
0answers
292 views

How close can pex tubing be to a boiler?

I am adding radiators to my 2-pipe central heating (UK). The whole piping is copper 22mm and microbore, and I'm extending it with 15mm pex barrier pipe graded for central heating. I know that the ...
0
votes
0answers
1k views

Any differences between Apollo PEX-B and Sharkbite PEX-B - Need to Run through Wooden Studs

I noticed that near me, HD carries Apollo PEX-B and Lowe's sells Sharkbite PEX-B. Are there any differences between these two in terms of flexibility, durability, etc? I wasn't sure if one brand was ...
0
votes
0answers
26 views

Estimating plex tubing purchase

I am in the planning stages of building a new 4300 sqft home for my family. I am working to build out how much it will cost to run all the supply lines for my plumbing (contracting out the drains). ...
0
votes
0answers
123 views

Can negative pressure in a PEX plumbing system cause or contribute to leaks?

Generally, when draining one's plumbing system all the faucets (or at least the ones at the ends of the manifolds or loop) should be opened so that all the water drains from the system and as the ...
0
votes
0answers
215 views

Alternative attachment to concrete floor containing pex heat tubes

I am getting ready to finish my basement. The counties "Typical Finished Basement Details" say that bottom plate attachment to floor is with 16D concrete nails face nailed. What are USBC approved ...
0
votes
1answer
1k views

Pipe Size from well to house

I'm new to owning a house with a well and am looking to clean up piping and well equipment as it is all from the 70's and I'm experiencing strong sulfur smells in my water. From the specs I've ...