Can I use PEX for underground water line?

Some plumbing contractors may be surprised to know that PEX is approved for use in underground as well as in-slab applications. Installing PEX pipe in the slab or underground can help reduce costs because there are no hangers required and less ladder time for installers (adding to installation efficiencies).

What kind of PEX is used for underground?

Although you can generally bury PEX tubing, some tubing types will have a longer lifespan than others underground, especially when used to transport water in freezing conditions (source). PEX-B is the first choice for burying due to its higher bursting pressure and reduced issues with leached chemicals.

Is PEX or PVC better for underground?

When a connection to copper or other metal pipes is required, PEX works better than PVC because crosslinked polyethylene won’t corrode. – Freeze resistance. It’s resistant to freezing (once again, due to its flexibility, which allows the PEX piping’s diameter to expand as the water pressure changes).

Is PEX suitable for underground?

Yes. Although the high temperature resistance of PEX makes it particularly suitable for hot and cold interior plumbing applications, it also makes an excellent underground water service piping. The new AWWA C904 standard also applies to PEX used in this application.

Is PEX piping better than CPVC?

PEX piping is highly energy-efficient , and it can help bring down your monthly household costs. CPVC piping is more energy-efficient than traditional metal pipes, but it is not as efficient as PEX.

What types of pipes are used for underground water supply lines?

Copper Pipes. Plumbers often use copper to connect underground water service lines. Although copper pipes are rigid and resistant to corrosion, copper pipes deteriorate under certain soil conditions.

Can you run PEX underground?

Pex can be run underground (I prefer copper as well) but make sure that there are no sharp edged rocks in the trench and surround it with sand, ~ 12″. Make it is run in one continuous length with no underground joints. As for entry into the crawlspace, if the floor is concrete then make sure it is sleeved in ABS.