Whether you’re a seasoned pro or just entering the plumbing trade, choosing the right materials for your projects is essential. This includes not only the specific pipes you use, but also the plumbing fittings that attach them. The wrong choice can lead to serious leaks or even water damage. But it’s not always easy to know what is best.
When it comes to home water systems, PEX (cross-linked polyethylene) pipe is a popular option. It offers a number of benefits over copper. For example, PEX doesn’t rust. This is important for a household pipe system since the corrosion of metal can lead to toxic chemicals leaching into your drinking water.
Another benefit of PEX is its ability to expand and contract. This flexibility makes it a good choice for long runs of pipe that may see a lot of movement. It’s important to install a loop in any long run, as shown above, to allow for contraction. It’s also a good idea to drill oversize holes through studs or joists for these long lengths so that the pipe can move freely as it expands and contracts.
When selecting a PEX plumbing system, you’ll also need to choose the right plumbing fittings. There are a few different options, all with their pros and cons. For instance, press fittings are fast and easy to learn, quick to install, maximize the shape memory of PEX by pressing it against the ring, larger-ID fitting improves system flow, and it’s impossible for the installer to make a dry fit (using a go/no-go gauge is recommended). The downside of this type of connection is that it requires special tools and products only available through professional plumbing supply distributors to trained installers. pex plumbing pipe