Can you use PEX pipe for a boiler system?

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.

Does PEX A have oxygen barrier?

PEX-AL-PEX is a three-layer PEX Tubing that also has an oxygen barrier.

How much does oxygen barrier PEX expand?

Differences between Non-Barrier, Oxygen Barrier and PEX-AL-PEX tubing

	Non-Barrier PEX	Oxygen Barrier PEX
Linear expansion (inches per 100ft at 10°F temperature rise)	1″ – 2.5″
Weight per 100ft for 1/2″ PEX	~5.8 lbs
Pressure ratings	160psi @ 73°F 100psi @ 180°F 79psi @ 200°F
Pricing	Lowest	Medium

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.

What temperature is PEX pipe rated for?

180°F
2) 180°F is the maximum fluid temperature for PEX tubing. ASTM specifications F877 for PEX tubing is a Pressure @ Temperature rating. As the temperature increases the max operating pressure drops.

What’s the difference between PEX A and PEX B?

PEX A is made using the Peroxide, or Engel, method. PEX B is formed using Silane, or Moisture Cure, method. This is the most common PEX pipe type out there. PEX C is created using the Electronic Irradiation, or Cold, method of cross-linking.

What is the difference between oxygen barrier PEX?

The most important difference between the two types is the external polymer coating of the oxygen barrier PEX tubing, which prevents oxygen diffusion through the tube. Oxygen barrier PEX is used in radiant or hydronic heating applications only, where cast iron or other ferrous components are present in the system.

Which is better PEX-A or B?

PEX-A is the most flexible of all PEX tubing types, has little or no coil memory and gives installer an ability to repair kinks with a heat gun. 8 times the OD for PEX-B & C) is helpful, but offers little practical advantage in most cases. PEX-B is a clear winner in terms of price vs. both other types.

Can you bury non barrier PEX?

PEX tubing is approved for direct burial outdoors, a practice most often necessary when running a water supply line to a house. PEX, since it can expand, resists freezing more effectively than rigid pipe, but PEX can still burst if water freezes in a line.

Is Blue PEX OK for hot water?

Red PEX pipe carries hot water. Blue PEX pipe carries cold water. White PEX pipe can be used for either hot or cold water. Gray PEX pipe, like white, can be used for either hot or cold water (although not all DIY centers carry gray).

Can you use PEX pipe for hot water radiators?

Also to know is, can you use PEX pipe for hot water heat? 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 makes a PEX pipe an oxygen barrier?

The oxygen barrier layer also known as EVOH (Ethylene Vinyl Alcohol) is positioned in between the internal construction of the pipe, averting oxygen permeation. PEX-AL-PEX is constructed the same way with an aluminum lining, making it an oxygen barrier pipe as well.

Is the pressure of PEX pipe the same?

Both types of PEX pipe have many similarities as well. Their pressure at temperature ratings remain exactly identical listing at 79psi@200F, 100psi@180F, and 160psi@73F. They are also extremely lightweight and flexible allowing for easy installation, as well as corrosion resistant.

Is there a difference between PEX and non barrier tubing?

The Non-Barrier tubing is extremely popular due to its high chlorine resistance and standards corresponding to the lead free act. Both types of PEX pipe have many similarities as well.

What kind of PEX pipe do you need for a boiler?

For non-pressurized boilers, PEX piping without O2 barrier can be used. This is the standard PEX type used in plumbing systems for hot and cold water distribution. Plumbing PEX tubing usually comes in red and blue colors to help installer distinguish between the hot and cold water piping.

What do you need to know about PEX plumbing?

What is PEX Plumbing? PEX plumbing is cross-linked polyethylene, which is a type of plastic. PEX tubing or piping is used for water supply lines as well as radiant floor heating. There’s been a lot of debate over PEX for the last several years because PEX has a few downsides that you might not expect.