oxygen barrier pex

Oxygen barrier PEX is made for heating applications and has thus not been approved for plumbing and drinking water. When using tubing without an oxygen barrier, you must be careful to assure that each and every component in your system is non-ferrous (meaning that it contains no iron).

What is oxygen barrier PEX pipe used for?

PEX Tubing with Oxygen Barrier. PEX Tubing with oxygen barrier is used for radiant floor heating, ice/snow melting projects and baseboard/radiator heating applications. It is also commonly used for supply and return lines to boilers and fan coils. Pressure rated 100psi at 180F.

Can I use oxygen barrier PEX for domestic water?

Most oxygen-barrier PEX does not have the appropriate approval codes for use with potable water and should not be installed in domestic plumbing applications. Since oxygen from the air can penetrate PEX tubing (even when the PEX is embedded in a concrete slab), an oxygen barrier is needed in most heating systems.

What happens if you don’t use oxygen barrier PEX?

PEX without an oxygen barrier actually allows oxygen from the air to permeate it. This happens even if the PEX is embedded in concrete. Cast iron circulator pumps will rust when oxygen is present in the water. Bronze or stainless steel circulators are necessary when this is the case.

Do I need oxygen barrier PEX for outdoor boiler?

Do I need oxygen-barrier PEX for my outdoor wood boiler or hydronic system? Only if it is a CLOSED system which would also likely be pressurized. Typically, a closed system would not require require filling of the vessel, nor a rust inhibitor water treatment.

What color is oxygen barrier PEX?

PEX with an oxygen barrier is designed for closed-loop space heating systems, and will normally be either red or white. It is usually not approved for use with potable water.

Can I use red PEX for radiant heat?

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.

What PEX is best for radiant heat?

Generally, for residential Radiant Heat Systems we recommend 1/2 Inch PEX Tubing. The PEX Tube size dictates the flow rate that can be achieved and thus the maximum loop length of the pex tube.

Can you use orange PEX for drinking water?

Designed for use on hot and cold potable water lines, Orange PEX tubing is commonly used for radiant floor and hydronic heating applications.

Is there a difference between blue and red PEX?

Although there are three types of PEX (see Label Lingo, below), the different colors don’t connote the distinctions; they simply make it easy for the installer to identify which lines carry hot water and which carry cold. Red PEX pipe carries hot water. Blue PEX pipe carries cold water.

Which PEX for potable water?

Most plumbing applications, especially those involving potable water, call for the use of non-oxygen barrier PEX, offered in several grades. PEX-A, which has the most flexible tubing and best freeze- and kink resistance, is ideal for use with kitchen and bath fixtures.

What is the difference between PEX A and PEX B?

PEX A vs PEX B: Burst Pressure

Bottom line, PEX A is more resistant to burst pressure than PEX B. PEX A’s expansive material can handle up to 500 PSI, which makes it reliable in extremely cold temperatures. Since PEX B is a more rigid material, it will not hold up as well in similar situations.

How do you know if PEX tubing has oxygen barrier?

Both Oxygen Barrier and Non-Barrier PEX can be purchased in these assortments of colors. The difference is in the outside material of the tubing itself. The Oxygen Barrier tubing exudes a glossy appearance, as the Non-Barrier tubing resembles a matte.

Can PEX tubing be used for hot water baseboard heat?

PEX pipe is cost-effective, flexible, durable and easy to install, making it a popular choice vs. copper and CPVC piping. Oxygen Barrier and PEX-AL-PEX tubing are intended for closed-loop heating applications (radiant floor heat, baseboards, etc.) Non-Barrier PEX is intended for hot and cold domestic water use.

Can PEX-AL-PEX be used for potable water?

PEX-AL-PEX is currently permitted for potable water in the International Plumbing Code. The material is also listed with the Uniform Plumbing Code.