Specifications of PEX Pipes – Things You Must Know About PEX

In this blog post, you’ll read:PEX pipes are a well-known choice for plumbing applications because of their adaptability, strength, and cost viability. Nonetheless, understanding the various sizes and thicknesses of PEX lines can be confounding, particularly for individuals new to plumbing.“In this blog, you can learn about the PEX piping system. Moreover, the details of the  sizes, colors, thickness, and applications are also briefly shared in this article.”
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In this blog, we will examine the multiple sizes and thicknesses along with the other specifications of PEX lines. This knowledge will help you choose the best PEX for your plumbing project. Let’s start!

What are PEX Pipes?

Cross-linked polyethylene (PEX), an adaptable plastic, currently supplants conventional copper and excited steel as water supply lines in new development and renovation projects. PEX piping (shorthand for cross-connected polyethylene) costs less than 50% of the cost of copper and introduces a lot quicker.

pex pipes
pex pipes

Furthermore, PEX makes redesigning the position more straightforward since it’s adaptable. PEX has areas of strength as it comes back to its unique shape. So, working with a coil of PEX is like grappling with a slinky.

For most positions, you’re in an ideal situation purchasing 10-ft sticks. You should pay a couple more pennies per foot, but you’ll still avoid dissatisfaction and wrinkles. Indeed, even professionals who run miles of PEX consistently frequently purchase sticks rather than curls.

You’ve most likely seen rolls of blue and red PEX pipe in the pipes passageway of your neighborhood store. You won’t have the foggiest idea that this beautiful tubing makes it feasible for energetic DIYers to supplant their broken water lines in their residential drainage systems instead of calling an expert.

Sizes of PEX Pipes

PEX tubing changes long from helpful 10-foot segments, ideal for little fixes or hose napkin introduces, to 500-foot rolls for building a home’s whole water supply framework.

PEX is accessible in 3/8-to 1-inch distances across. The most widely recognized size utilized in private pipes is 1/2-inch PEX, which is reasonable for most applications. The 3/4-inch size is commonly used for more extensive business applications, like tall structures or enormous modern activities. The 3/8-inch size is less standard and is regularly used for little ventures or in regions where space is restricted.

Sizes of pex pipes
Sizes of pex pipes

It’s vital to note that PEX pipes are not estimated by their inside breadth like different pipelines. This is because PEX pipes have a more slender wall thickness than customary lines, which is considered a bigger interior measurement.

It’s good to introduce 1/2-inch or 3/4-inch PEX for a sufficient water stream for your principal lines. While supplanting old water supply lines with PEX, the standard is to use similar-sized plumbing, even though you can change from 3/4-inch to 1/2-inch plumbing with a connector.

For homegrown pipes and warming frameworks, most necessities will be covered by a 15mm line. For a clearer view, you can get help from the following table and pick the right size according to your requirements.


Sanitary application Minimum flow rate (liters per second) Minimum recommended pipe size
Kitchen sink 0.2 15mm
Bathroom basin 0.2 15mm
Bathtub 0.33 22mm
Shower 0.2 15/22mm
Mixer tap 0.42 15/22mm
Toilet 0.12 15mm
Washing machine 0.2 15mm
Dishwasher 0.1 15mm

Kinds of PEX Pipes

PEX piping has different kinds due to changes in formation material. There are three principal kinds of PEX piping:

● Type A PEX Piping

This type is the most adaptable PEX channeling, making it versatile for all home water needs, including consumable water piping. Type A PEX piping extends most of the three kinds, so it is generally impervious to freezing and breaking, which is significant in chilly climates. However, type A PEX is more expensive than the other two types of PEX piping and is cheaper than copper pipes.

● Type B PEX funneling

This kind is marginally stiffer and has a hearty loop memory, meaning it needs to hold its spiral shape, making it somewhat challenging to introduce. Type B PEX extends, like Type A, permitting it to oppose breaking in a chilly climate. It is more affordable than Type An and has more protection from chlorine in water supplies, meaning it won’t separate in regions with a high chlorine level in the drinking water.

● Type C PEX Piping

This type is the stiffest of the three and more inclined to wrinkle and break than the other two types of PEX piping. It’s frequently utilized for short fixes that require no twists. Type C PEX is usually less expensive than the other two kinds of PEX funneling.

Thickness of PEX Pipes

PEX pipes come in two distinct thicknesses: PEX-An and PEX-B. PEX-A lines are cross-connected utilizing a peroxide cycle, which brings about a more uniform and predictable item. PEX-A lines are more adaptable and impervious to harm from freezing, making them a decent decision for chilly climate environments. They are likewise more costly than PEX-B pipes.

PEX-B pipes are cross-connected utilizing a silane cycle and are more affordable than PEX-A lines. PEX-B pipes are a decent decision for warm weather conditions or indoor pipe applications where freezing isn’t a worry.

While picking the thickness of your PEX pipes, it’s essential to consider the particular necessities of your pipes project. This knowledge is vital for pressure safety valve manufacturers to get safe pressure application systems. Moreover, if you live in a space with cold winters, consider utilizing PEX-A lines to keep harm from freezing. If you live in a warm environment or are dealing with an indoor pipes project, PEX-B lines might be a more savvy choice. Here is a table you can check for thickness in detail.

PEX Tubing size


Outside Diameter


Minimum wall thickness
3/8″ 0.500″ 0.070″
1/2″ 0.625″ 0.070″
5/8″ 0.750″ 0.083″
3/4″ 0.875″ 0.097″
1″ 1.125″ 0.125″

Colors of PEX Pipes

The various varieties of colors in PEX pipes mean something other than the qualifications. They make it simple for the installer to distinguish which lines convey high-temperature water and which convey cold.

  • Red PEX pipe conveys hot water.
  • Blue PEX pipe conveys cold water.
  • White PEX line can be utilized for either hot or cold water.
  • Dim PEX pipe, similar to white, can be used for hot or cold water.

How to Pick The Right PEX Line Size And Thickness?

Picking the right size and thickness of PEX pipes is a significant stage in any plumbing project. Here are a few variables to consider while choosing your PEX pipes:

● Water pressure:

The size and thickness of your PEX lines ought to have the option to deal with the water tension of your pipe framework. If you want to have high water pressure, consider using thicker PEX pipes. Many times, pressure relief valve manufacturer considers the use of PEX in their systems.

● Length of line runs:

Longer lines require bigger PEX pipe sizes to guarantee a sufficient water stream.

● Environment:

If you live in a space with cold winters, picking PEX-A lines that oppose freezing and forestall harm to your pipe framework is critical.

● Budget Plan:

PEX-A lines are more costly than PEX-B pipes, so you should consider your spending plan while picking the thickness of your PEX pipes.

● Expected use:

Red PEX pipes are planned for boiling water lines, blue PEX pipes are expected for cold water lines, and white PEX pipes are scheduled for hot and cold water lines.

Both hot and cold water lines for heating
Both hot and cold water lines for heating

It’s critical to talk with a pipes proficient or reference plumbing codes and principles to decide the suitable size and thickness of PEX pipes for your particular task. Many pipe fitting manufacturers give a detailed size manual when purchasing any pipe.

Applications of PEX Piping

Due to attributes like durability and adaptability, the PEX has many applications nowadays. Some of them are listed below.

  • Water administration lines size ½ to 3-inch
  • Hot and cold water plumbing dispersion, private and business
  • Private fire assurance
  • Recycled water funneling
  • Brilliant warming and cooling frameworks (floors, walls, roofs)
  • Hydronic piping and conveyance(radiators, fan loops, etc.)
  • Chilled water funneling
  • Pre-protected transmission funneling, ordinarily for covered applications
  • Open-air snow and ice softening
  • Turf molding/pitch warming
  • Geothermal ground loops


Cross-connected polyethylene (PEX), an adaptable plastic, supplants conventional copper and electrifying steel as water supply lines in new development and rebuilding projects. PEX pipe comes in various varieties for simple distinguishing proof, and the adaptability of this material can assist in decreasing the clamor of streaming water.

PEX pipe is erosion-safe and will not experience the ill effects of scale development. It is additionally totally smooth, which restricts any strained misfortunes. The PEX manifold manufacturers must consider these qualities for quality system production. For quality manifolds, contact here. On the drawback, PEX pipe is delicate to UV beams and must, as a rule, be introduced where it isn’t uncovered. Encasing it in conduit is generally best.

Contingent upon the nature of the cross-connecting, the PEX line can have high warm development and might be oxygen penetrable. While PEX pipe is excellent for putting in new frameworks, it likewise functions admirably for redesigning more seasoned plumbing frameworks or associating through to expansions (regardless of whether the first framework is made utilizing another material). 


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