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

What is the difference between red and orange PEX?

The first thing to know is that the color of the tubing does not specify what type it is, but is rather there for color coding purposes. Blue meaning cold, red meaning hot, white for neutral, and orange is typically used for PEX-Al-PEX tubing.

What does the different colors of PEX pipe mean?

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 I use orange PEX?

The colors can be used to easily distinguish between hot and cold distribution lines. Orange PEX pipe is an oxygen barrier PEX pipe used only for hydronic heating applications.

What color PEX should I use?

Color-Coded: Red PEX pipes can be used for hot water supply lines, blue PEX for cold water supply, and white for either hot or cold. These colors are just for your convenience. Plumbing code does not require the pipe color to match the type of water supply.

Colors of PEX Tubing

Which type of PEX is best?

PEX-A, which has the most flexible tubing and best freeze- and kink resistance, is ideal for use with kitchen and bath fixtures. PEX-B is slightly less flexible and less freeze-resistant.

How can you tell the difference between PEX A and PEX B?

Differences can be summarized as follows:

1. Flexibility - PEX-A is the most flexible, allowing for it to be fastened by cold expansion, which allows the end to be fluted prior to inserting the fitting. ...
2. Kink-Resistance - PEX-A has the greatest resistance, PEX-B the lowest.

Which PEX for baseboard heating?

For baseboards, 5/8" or 3/4" PEX are recommended, although very small baseboards can be fed with 1/2" PEX lines. For cast iron and aluminum radiators, 3/4" PEX is a standard size.

What type of PEX is used for radiant heat?

The most common type of tubing used for radiant heat applications is the oxygen barrier PEX. The oxygen diffusion barrier coating of this radiant heat PEX prevents the oxygen in the atmosphere from permeating the pipe walls into the water to avoid over-saturation of the water with oxygen.

Can you use black PEX for hot water?

20mm X 100m Black Water Pex B Pipe is a single layer pipe suitable for potable, hot and cold general-purpose water systems.

Where is PEX not allowed?

PEX can't be installed in high heat areas.

You can't install PEX in high heat areas like near recessed lighting. This also means you can't connect PEX directly to a hot water heater, but you can use a connecting material to do this.

What is the best pipe to use for underground water line?

HDPE (High Density Polyethylene) pipes are a considered the best choice for underground water lines. What makes this type of piping so great? HDPE pipes are non-toxic, tasteless, and considered a green building material. The pipes are designed to be high crack- and corrosion-resistant.

Can you use heating 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.

What size PEX should you use in a bathroom?

Conserving water is an admirable goal, and by running narrower PEX lines to some fixtures, you can reduce wasted water -- but not all fixtures benefit from narrower lines. Most homeowners aren't willing to wait 15 minutes to fill their bathtubs, so running a minimum 1/2-inch line to the tub is a good idea.

What kind of PEX is used for underground?

Among the three types of PEX, two types, PEX A and PEX B, are suitable for burying underground. These two PEX tubing options have enough flexibility to allow them to withstand the fluctuations of water freezing and thawing, but should be buried below the frost line.

What temp will PEX pipe freeze?

How To Keep Pex Pipes From Freezing. Generally, if the temperature falls below 20 degrees Fahrenheit ice will form in water lines and pipes will freeze.

Can PEX freeze?

Frozen PEX Pipes Have a Unique Reaction. Due to its flexibility, PEX can expand under the damaging pressure caused by ice formation. If the weather gets cold enough, PEX pipes can and will freeze like any plumbing. However, PEX may be less likely to rupture as a result of freezing.

What are the different types of PEX fittings?

PEX fittings are most commonly made up of one of three different types of materials: Plastics, Brasses, or Stainless Steel. Alternatively, a push fit fitting uses a combination of these materials.

What's the difference between PEX AB and C?

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.

Does PEX freeze and burst?

PEX pipes, just like any pipe, can freeze when the temperature drops too low. Because the pipes are designed to be flexible, PEX has the ability to expand. Although it is still possible for them to burst, this means PEX pipes are less likely to rupture after freezing.

Why do you need oxygen barrier PEX?

External coating of oxygen barrier PEX tubing effectively prevents diffusion of oxygen molecules into the water through walls of the pipe. This feature prevents corrosion of cast iron components in the system (circulator pumps, air purgers, fill valves, boiler heating elements, etc.)

Is PEX OK for drinking water?

The study showed: There are no health risks associated with drinking water from PEX pipes.

How long will PEX tubing last?

PEX: Due to its flexibility and durability, PEX piping should last at least 50 years. PVC / CPVC: Under typical conditions, these pipes should last up to 100 years.

Is PEX expansion or crimp better?

PEX crimp equipment is a lot more affordable than the expansion kits. However, despite the pricing and form shortcomings, most plumbers prefer to work with expansion because installation is more efficient. There are fewer leaks, and it also seems to be more durable against extreme colds and frozen pipes, etc.