Running PEX lines

How do you run PEX supply lines?

Quote from the video:
Quote from Youtube video: Some of the tools that you're going to need perform a proper PEX pipe installation is the proper cutting tools you can't just use a saw or a pair of scissors.

How far can you run PEX?

In general, the greater the distance from the manifold to the fixture, the wider the PEX tubing should be. A 3/8-inch line is sufficient for lengths up to 250 feet; 1/2-inch line will deliver adequate water pressure up to 350 feet; and 3/4-inch tubing is necessary to run a 500-foot line.

Can I run PEX on the ground?

Although PEX pipe is excellent for underground use, it’s not rated for outdoor use unless properly protected. For example, PEX piping should not run along the ground without wrapping it or burying it. PEX piping used outdoors must have an insulation wrap to protect the tube from freezing.

Where should you not use PEX?

PEX can’t be installed in high heat areas.



You can’t install PEX in high heat areas like near recessed lighting. This also means you can’t connect PEX directly to a hot water heater, but you can use a connecting material to do this.

Can you run PEX through joists?

The Advantages of PEX



You can snake long runs through joists and studs. Second, PEX doesn’t sweat under high humidity conditions, and it’s also resistant to bursting, even if the lines freeze solid. Third, joints are easier.

What is wrong with PEX plumbing?

PEX piping has a maximum bend radius, which can lead to stress on the pipe caused by improper installation. In addition, extreme bends and kinks place a very high local stress on the wall of the pipe, making it more susceptible to oxidative degradation.

Does PEX need expansion loops?

PEX supply expands and contracts more than copper, so don’t stretch it tight. Let it droop a little between fasteners. On long runs, it’s a good idea to install a loop as shown to allow for contraction. Another advantage of the loop is that if you mess up and need a little extra tubing, you can steal it from the loop.

How many GPM can 1/2 PEX flow?

Pressure Drop Table (psi per 100ft of tubing length)

Do you have to use a manifold with PEX?

In homes built before the “PEX revolution,” that still have galvanized pipes, there is no use for a PEX manifold system.

Is PEX OK for drinking water?

The study showed: There are no health risks associated with drinking water from PEX pipes.

Do mice eat PEX pipe?

PEX Pipe Is Vulnerable



Rodents Chewing Through PEX Pipe is a common problem in our area. It doesn’t matter how old your home is, if you have an attic, you need to watch for rodent damage to PEX Pipe or PVC. If you’re hearing rustling noises coming from the attic, it’s time to do an inspection.

What are the disadvantages of using PEX pipe?

The biggest disadvantage to PEX is that it is unknown how well or long it will last. While PEX piping is warrantied for up to 25 years, it is unknown what could happen to PEX piping as the years go on. Since it is so new, it is hard to know what water will do to the plastic over 30 years.

Which is better PEX crimp or clamp?

Quote from the video:
Quote from Youtube video: Although there are a few pros. And cons to keep in mind for each stainless steel clamp rings resist corrosion more effectively than crimp rings.

How often should PEX pipe be supported?

Run the PEX tubing: PEX needs to be supported a minimum of every 32 inches when running horizontally. If running vertically, it should be supported every 4 to 6 feet.

How do you anchor PEX tubing?

Quote from the video:
Quote from Youtube video: And then what you want to do is move up your crimp ring to about an eighth inch. From the top there. And then you're going to use your crimping pliers.

How many hangers do I need for PEX?

two supports

All pieces of PEX-a Pipe Support must have a minimum of two supports/hangers. Use the included 300-lb., tensile-rated, stainless-steel straps to secure the support channel to the pipe.

What is better crimp or cinch?

Asides for its versatility, the cinch tool is also cheaper than the crimp tool. The cinch rings can be slightly more expensive than crimp rings. A cinch connection will last over 5 years and can last more than 10 years. Crimp connections consist or a crimp ring, a crimp tool, proper fittings and a go/no-go gauge.

Can you zip tie PEX?

Zip ties are commonly used during the installation of PEX tubing in concrete to secure the pipe to rebar or wire mesh.

Can PEX be bundled together?

There doesnt seem to be a limit; I ran 8 or so together in different bundles from my boiler (plumbed my radiators with pex) The plumber I use does the same thing with the pex for potable water. I think it makes for a neater job than using the individual plastic clips…and twice as fast.

Can you tie PEX to rebar?

Do not use metal rebar ties to secure PEX. If using PEX rails, these must be installed prior to installation of tubing.