General

Is PEX piping plenum rated?

Standard

Is PEX piping plenum rated?

Uponor PEX-a pipe is approved for installation in plenums and carries a three-hour fire-resistive rating.

Is PEX allowed in return air plenum?

A return-air plenum is an un-ducted ceiling space being used for air circulation. It’s important not to have PEX-a Pipe Support segments less than 48 inches long in a return-air plenum, and the space should not have more than 18 inches of bare PEX or fittings.

What is plenum rated pipe?

Plenum ratings Model codes restrict the surface burning characteristics of the materials that can be installed in air plenums. Various tests are used to evaluate the surface burning characteristics of constructions materials.

Can you use PEX in commercial buildings?

PEX pipes. Cross-linked polyethylene (PEX) offers a unique benefit when used in commercial buildings. It is highly tolerant of heat and cold, and can, therefore, be used for different types of water supply applications.

Does PEX have a fire rating?

It is not uncommon for floor and some wall assemblies to require a fire-resistance rating. One manufacturer has tested their PEX tubing in assemblies that provide a one hour and two hour fire- resistance rating.

Is PVC pipe plenum rated?

Fact: PVC should not be installed in a plenum. It is classified as a combustible material per ASTM E 136.

Is fiberglass pipe insulation plenum rated?

Associated to this Bulletin is Underwriters Laboratories Test Report SR5052164, clarifying that Owens Corning® SSL II® with ASJ Max Fiberglas™ Pipe Insulation is Plenum Rated, and is the only fully compliant Listed and Labeled Pipe Insulation by Underwriters Laboratories (UL) File R14111, Category: INSULATED PLASTIC …

Is PEX used in new construction?

Today, PEX is used in more than 60 percent of new construction residential water supply systems.

Is PEX OK for drinking water?

These leakage products consist of residues of additives used during production to give plastic pipes their desired properties, as well as any subsequent breakdown products. The study showed: There are no health risks associated with drinking water from PEX pipes.

Do professional plumbers use PEX?

Now engineers and installers are specifying PEX to help meet value engineering requirements and also support those tight production schedules for all types of commercial plumbing (and hydronic piping) applications.