Q: What is PEX?
PEX pipe is a cross-linked polyethylene tubing that provides an excellent option for plumbing, radiant and hydronic
systems in both residential and commercial plumbing applications. When combined with our push-to-connect fittings,
manifolds, valves and other supplies, PEX pipe offers the fastest way to plumb any project. PEX pipe is made from
cross-linked HDPE (high density polyethylene). The HDPE is melted and continuously extruded into a tube to form a
high-performing pipe suitable for a variety of potable and non-potable plumbing applications.
Q: Can I use PEX pipe for compressed air applications?
No, PEX pipe is not intended for compressed air applications.
Q: Can I use PEX pipe for radiant or hydronic heat applications?
"Yes, PEX pipe is approved for radiant or hydronic heating applications. Since ferrous components are likely to be
present in the system, it is important to use oxygen barrier PEX pipe to help prevent ferrous components from rusting.
Q: Is PEX pipe freeze resistant?
Yes, PEX pipe is freeze-damage resistant. PEX pipe will expand if frozen and contract to its original shape when thawed.
PEX pipe is not freeze-proof. You should use the same standard insulation precautions with PEX pipe to help prevent freezing.
Q: Can PEX pipe be joined with solvent cement?
No. PEX pipe does not require glue or cement, and can simply be joined with push-to-connect fittings, metal insert fittings,
or plastic insert fittings for a watertight seal.
Q: Can I use PEX pipe outside?
PEX pipe is not approved for outdoor applications and is not approved for continuous UV exposure. PEX pipe should not be
stored in direct sunlight.
Q: Why is PEX better than copper pipe?
PEX pipe is easier to install than rigid pipe, and it is available in long coils that can eliminate the need for extra fittings. PEX pipe
is flexible and can be navigated around obstacles. For more than 30 years PEX pipe has proven its durability and shown that it
is not susceptible to problems found in metal piping systems such as reduced ID (occlusion), corrosion, electrolysis, filming, minl
build-up and water velocity wear.
Q: What are the benefits of PEX pipe?
PEX pipe is part of a water supply piping system that has sevl benefits over metal pipe or rigid plastic pipe systems. It is flexible,
resistant to scale and chlorine. PEX pipe does not corrode or develop pinholes. Plus, it is faster to install than metal or rigid plastic
and has fewer connections and fittings.
Q: Can PEX be used under a concrete slab?
Yes, PEX pipe can be installed under a concrete slab. Since PEX pipe is supplied in coils, installation can be completed in one continuous
length without the need for extra fittings. PEX pipe can also be encased within a slab, which is commonly used for radiant floor
heating. In cases where PEX pipe penetrates a concrete slab, it must be protected with a nonmetallic sleeve at the penetration point.
Q: How soon after installation can you pressure test PEX tubing?
PEX pipe can be pressurized for testing as soon as all necessary connections have been made.
Q: Where is PEX pipe approved for plumbing use?
PEX pipe is approved for residential and commercial hot and cold water distribution systems, municipal water service lines, radiant panel
heating systems, hydronic baseboard heating systems, snow and ice melting systems and building services pipe.