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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684 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 ...
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24 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 ...
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1answer
89 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 ...
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1answer
31 views

Plumbing re-routed through attic

We recently had a leak under our slab foundation and ended up going with rerouting the plumbing through our attic. After it was done, we have noticed that there is now a distinct odor (of the PEX ...
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1answer
31 views

Can I run PEX water lines/PVC drain pipe in “warm” side of insulated exterior wall?

I want to re-plumb the PEX water lines + drain supply line in my laundry room. The back wall of the laundry is an exterior wall with standard fiberglass insulation. Currently, the water lines to the ...
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4answers
43k views

Can I run water lines through the attic?

I recently had a Slab leak in my home in Indianapolis,IN. This is the 4th Slab leak since I've owned the home. I decided it was time to reroute all the Water lines. I thought this was best so I wouldn'...
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3answers
51 views

Outside garden hose bib plumbing - 1/2“ or 3/4”'pex

I recently renovated and I now want to setup an outside garden hose. I can either hook it up to the 1/2" PEX or the 3/4" PEX. I have 3/4" PEX coming from main water entry to my water ...
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2answers
2k views

1“ pex through 3” pvc conduit?

I intend to use schedule 40 3" pvc pipe to run my pex from outside water heater, through slab, up into an interior wall. I will have sweeping 90 ells. Will 1" or 3/4" pex be able to make the ...
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25 views

Uneven copper bellow threading when replacing copper pipes with PEX

I had a water leak behind my shower and found that it was leaking through the soldering of a copper pipe. There's a threaded male connected and the copper pipe was going inside of it and sealed with ...
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2answers
293 views

What kind of plumbing should I use to replace PB tubing?

I am looking for insight. I am the 3rd owner of a single-story home built in the late 80s. It has 3/4" polybutylene (PB) plumbing running through the attic with 1/2" PB branching off. We have 2 full ...
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1answer
42 views

What's the difference (if any) between these two types of PEX-to-copper fittings?

There are two kinds of similar fittings to transition from copper pipe to PEX tubing. Here's an example: The first is made from copper and looks to be "formed" ie bent / pressed into shape in a mold. ...
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994 views

what PEX fittings can I use with a Zurn PEX QickClamp Crimp Rings?

I have Zurn crimp rings and the Zurn ratchet tool. I was wondering what brass fitting I can use. Do they need to be Zurn fittings or can they be any crimp fittings? For example, can I use ...
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32 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 ...
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1answer
1k views

Pex Connections As Unions?

I've noticed that in a properly (I assume) crimped Pex connection the tubing will rotate around the fitting it is crimped to - so that you have, in effect, a union. So, I'm wondering: Is that how it ...
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40 views

attaching a coupling to copper pipe very close to wood

I have a copper pipe connected to a pex pipe by a leaking sharkbite fitting. I'd like to replace the sharkbite fitting with something more permanent. However I'm not sure if it's safe to use a ...
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2answers
49 views

How do you finish a valve when using pex pipes

I'm doing all of my work with expansion PEX. I'm a little puzzled about how to finish the valves where the toilets and sinks connect. Are you supposed to just leave the plastic visible where the valve ...
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1answer
67 views

Electrical Bonding of Service Panel After PEX Replacement of Galvanized Pipes

My house was built in 1929 and has gone through many rounds of plumbing/electrical upgrades over the years. I am replacing the galvanized pipes with PEX and I'm confident that I have planned ...
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0answers
25 views

Replacing polybutylene pipe to add a new outdoor spigot (freeze proof sillcock)

I need to replace the entire outdoor spigot (sillcock), the shutoff valve that goes with it (because it is old and leaking), and some polybutylene pipe in the process. I have included several photos ...
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23 views

Attaching 1/2" PEX swivel elbows to shower valve body

I have a shower valve body that has two outputs to main shower head/sprayer and also an overhead rain shower head. The problem is that the outputs are 1/2" MIP and they are close together...too close ...
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3answers
2k views

Should I replace my trunk-and-branch setup with a PEX manifold?

My house is plumbed using PEX trunk-and-branch, with the main 3/4 line coming in, splitting off to 3/4" to the hot water tank, and then a 1/2" trunk that all the other branch supplies tee off from. ...
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1answer
146 views

What size manifold for 1" pipe from meter?

I am running all new water supply in an old house (c 1884). The incoming line from the meter is 1" galvanized (no idea how much mineral buildup is inside). Will it be sufficient to replace all of ...
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4answers
82 views

Threading cable through existing pex-like tubing

My apartment (top floor) has runs of 3/4" (-ish) pex-like tubing (photo attached, Switzerland if it's relevant) running from a central point. One such tube carries an existing coaxial cable (landlord ...
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4answers
4k views

Would increasing pipe size just after the meter give better flow without increasing pressure too much?

I have a wife and 5 kids. Three of them are teenage girls, which means I hardly ever get a chance to shower. I wanted to put in a second bathroom to help fix this. I spoke with some local plumbers and ...
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1answer
29 views

Well Pump Setup: Best Materials to Use for Pipes

I live in Southwest Florida, and we have well water. I am in the process of redoing our whole well input plumbing setup and wondering about the best materials to use. This is what I'm proposing as a ...
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27 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 ...
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1k views

Does 3/4” pex supply enough water for a house

Will 3/4” pex with an inside diameter of .68 inches have enough capacity to supply a 3/4” manifold with 1/2” supply lines to a bathtub, washer and toilet and sink with no pressure drop? I plan on ...
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48 views

PVC ring Shut off valve? [duplicate]

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 ...
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1answer
147 views

Can the drain pipes in my kitchen soffit be relocated into the wall?

I'm in planning stages for a major kitchen remodel. Home built in 1984 with PEX plumbing, all electric, etc. We would like to demo the kitchen soffit (bulkhead) to make the ceiling level and install ...
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2answers
16k views

Whats the difference between black, blue and red PEX pipes sleeves

I'm using PEX pipes for water tubing, but I'm not sure which sleeve type should I use for hot and cold water pipes. Whats the difference between black, blue and red sleeves? and which should I be ...
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4answers
5k 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 ...
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2answers
164 views

Can I replace hydronic water boiler return pipes with pex?

My house was built in the 1920s, the heating source was a hot water/radiator system. Originally the basement was probably used only for a coal furnace (we have the drop-off door that the coal guy used ...
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1answer
87 views

PEX pipe burst: what else needs to be fixed to prevent it happening again?

I'm a renter in NYC and our 4-story building has recently-installed (within the last 8 years) baseboard hydronic heat. All of the tubing is PEX, except for from the boiler itself (as required by code) ...
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3answers
2k views

Chemical Smell After Tankless Water Heater Install

I recently had a plumbing company install a tankless water heater in my crawlspace. Everything with the install works and looks great, but we are experiencing a very strong chemical smell (like nail-...
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2answers
109 views

Installing Smart Water Monitor/Valve

We recently moved into a new home and have been blessed with sloppy plumbing and high water pressure. The whole home is copper and since moving we have had 3 leaks in various joints. I'm no expert but ...
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17answers
84k 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?
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3answers
102 views

Inaccessible outdoor PEX piping lost its insulation - what to do?

We have an outdoor counter and sink, and a family of squirrels decided that it was a good place to live. Unfortunately they ripped off a good portion of the PEX piping insulation. (Pretty sure it's ...
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1answer
688 views

Installing Spigot Upside Down and Close to Ground

I live in a trailer and am debating attempting to put a hose outside/on the side. A few considerations: I have no plumbing experience It gets -40 where I live in the Winter I have read great things ...
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3answers
2k views

A proper tool for removing a PEX pipe from a fitting barb

When a pinch crimp has to be removed and re-done, what is the proper tool to remove the PEX pipe from a barb after removing the clamp and cutting of the pipe? I thought of using the PEX pipe cutter'...
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2answers
167 views

Is PEX very susceptible to damage from rats/rodents?

A friend of mine wants to re-plumb his house. The neighborhood has recurring issues with rats. I heard rats like to (as in "seek out opportunities to") chew through and damage PEX plumbing, whether ...
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1answer
124 views

Is it a problem to have PEX manifold outlets adapted from 1/2 to 3/4?

A contractor has installed my 3/4 inlet, 1/2 outlet manifold using 3/4 tubing on the outlets. He used a few inches of 1/2 pex to connect the outlet tubes to the manifold. This seems odd, but I’m not ...
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119 views

Copper to PEX connection

I am swapping out an old pedestal sink for a conventional vanity. Currently in place are some 1/4 pex lines that are run through the pedestal. I want to swap the small pex for 1/2” and am fairly ...
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1answer
35 views

PEX repipe and hot water issues

We just repiped out 45 yrs old house with PEX and the whole process was very smooth and I’m glad we did this. I knew the water pressure would change going from 90 psi water pressure to I don’t know ...
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142 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 ...
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2answers
177 views

Would Replacing an Existing 3/4“ Water Main Line with 1” Improve Overall Volume/Flow to House (GPM)

After my own inspection and talking to the utility company I have the following: The meter (near the road) is 5/8" x 3/4". From what the water company told me - this is the most commonly installed ...
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33 views

where to run pex in cabin

pressure tank in unheated cabin Best way to keep a PEX run in an attic (above a foyer) from freezing? I have the full well and pressure tank system finally working :) Need a run from the wiring ...
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1answer
1k views

Water Softener Drain Line with Loop - Flexible PVC to Sharkbite?

So, I bought a Genesis Revolution upflow water softener to install in my first house in Laveen AZ. We have a water softener loop already plumbed into the house. The airgap is in the laundry room ...
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2answers
143 views

Pex bend supports keep breaking

I've used PEX bend supports in the ½" size before which worked great, but trying to use them for ¾" has been difficult. Regardless of the method I've tried, the plastic ones keep snapping. Using the ...
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2answers
413 views

How crooked can you crimp pex rings?

I had to add a supply valve for my refrigerator in my house. It's my first time working with pex. I added some Pex B to my existing Viega cold water line and used copper crimp rings with the ...
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1answer
94 views

Should I replace 3/4“ and 1/2” galvanized pipe with the same sizes of pex?

So I am about to replumb my house. From the meter to my house is 3/4" 60 yr old galvanized pipe. Once it gets to the house it changed to 1/2" lines serving everything in the house. Example is a 1/2" ...
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1answer
25k views

Plumbing rough-in pressure test PSI

My plumbing rough-in is done, and inspection was passed. Unfortunately, I had to move a couple of things the plumbers did. I probably had to redo about six crimps rings. Before I go any further, I'...