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Three Copper and PEX Plastic Fittings Problems

The question is, “Are Copper PEX plastic fittings bad for water supplies?” We’ve outlined three problems with copper and PEX plastic pipes, and we’ll talk about how they’re different and how to deal with them. These problems include cost, flexibility, and durability. Read on to learn more. And don’t forget to ask questions! We’ve answered some of the most common questions below! Hopefully, you’ll feel much better about your choice after reading this article!

Copper in PEX plastic fittings

One of the biggest debates in plumbing is whether brass or plastic PEX fittings are better. Some people swear by brass and think plastic PEX fittings are better, but it ultimately comes down to personal preference and budget. This article will examine both sides of the debate, from the pros and cons of brass to the differences between the two materials. PEX is a synthetic plastic product that is manufactured by cross-linking polyethylene. PEX is made from medium-density polyethylene (HDPE) that has been altered to improve heat resistance and stability.

PEX fittings have uncountable uses in water conveyance and hydronic radiant heating. They’re also common in fan coil delivery systems and baseboard delivery systems, and in snow melting and permafrost protection systems. But the pipes and fittings can be used in many industrial and food & beverage applications, as well. A plumber can check your plumbing system for corrosion, and if they find it, switch to poly PEX or DZR brass fittings.

PEX pipe is less costly than copper and does not corrode. Corroding pipes can lead to leaks, which contaminate the water supply. PEX pipe is easy to install and flexible. It can be run throughout the house without leaking fittings. However, it’s not suitable for outdoor use, since the ultraviolet rays make the plastic tubing break down quickly and harden within a couple of months. Unlike copper, PEX tubing is not recyclable, and requires special tools and connectors to be installed.

The use of copper in PEX plastic pipes has numerous disadvantages. PEX has higher durability than copper, but it’s not 100% free of BPA. Plastic is permeable to chemicals and can leak into the water. Consequently, PEX plumbing can’t be used outdoors without copper. If you’re using PEX to connect to a hot water heater, the connection will be incompatible. You can’t recycle PEX piping unless it’s attached to a copper line.

The primary disadvantage of copper in PEX plastic fittings is that copper can corrode brass fittings. Copper is a poor insulator and can lead to leaks and flooding. Furthermore, PEX tubing can fail under the stress of a high-pressure water pressure. If this happens, the brass fittings can cause the tubing to break. If the plastic pipes are brittle, the fittings will not last long.


While PVC and metal pipe are recommended for outdoor applications, PEX is a great alternative for indoor use. While both types of pipe have their advantages, pex is flexible and can be easily run through a home without leaky fittings. While some people have concerns about the safety of PEX pipe and fittings, these are mainly due to concerns over the taste and plastics used. This article will address these concerns.

PEX-A is the most flexible type and is suitable for all home water supply plumbing. This variety expands the most when exposed to freezing water. As a result, it is the most resistant to freezing. It is also very easy to work with. While PEX-A is the cheapest type of PEX, there are few significant benefits to choosing this type of pipe. It also costs a bit more than PEX-B, but PEX-A is ideal for residential use and is not prone to cracking in cold weather.

PEX comes in large continuous rolls and long supple sticks. The biggest difference between manufacturer brands is in the way the pipes connect. In residential applications, the most common method of connection is crimping. To crimp PEX, you need special crimping tools and ring sets. Ratcheting scissors are a good choice for clean cuts on the ends of the pipe. Toothed cutters may leave jagged edges and affect the seal of the fitting. PEX pipes are also faster than copper lines.

PEX B and A fittings are made of polymer and are less flexible than PEX A. While the former is ergonomic, PEX B is not as ergonomic. PEX B can result in a leak due to crooked crimping. PEX A pipe can be repaired if it becomes damaged. To repair a crooked PEX pipe, use a heat gun. The heat gun activates the material and causes it to expand back to its original shape.

PEX is made of cross-linked polyethylene. It has cross-linked bonds in its polymer structure and is flexible enough to handle high pressures and high temperatures. PEX pipe is a great choice for plumbing projects because it is affordable and easy to install. PEX also has a memory and always wants to go back to its original shape. To make the installation easier, PEX pipe comes in 10-ft. “sticks” cost a few extra cents per foot, but they save time and frustration. Plumbers who run miles of PEX pipe throughout the year often purchase ten-ft. sticks of PEX.


Cross-linked polyethylene (PEX) pipes are commonly used for general plumbing applications. The materials used to make the pipes do not require any soldering. When installing PEX pipes, you need to use fittings that are made of either stainless steel or PVC. Most PEX pipes use push-fit fittings. For commercial applications, such as in restaurants, you may want to consider a more durable type of installation.

Unlike brass or copper, plastic PEX fittings are not susceptible to corrosion. They can last for up to ten years without leaking, and are even suited for use with corrosive water. Because they are durable, they are a great choice for systems with low-quality water. PEX plastic fittings do not leak, and they can be remounted many times. For this reason, you can be sure that plastic PEX fittings will last for many years.

A third major reason for PEX’s durability is the resulting increased strength. PEX is a polymer that has undergone chemical and physical processing to change its molecular structure. This process causes crosslinks to form between polymer chains that improve their properties. PEX can also withstand elevated temperatures. It also resists the development of slow cracks. And unlike steel, PEX has a higher melting point, which increases its resistance to corrosion.

One of the primary benefits of PEX is its ease of installation. PEX plastic fittings require little maintenance and can be installed with minimal disruption to your home’s environment. PEX pipes are lightweight and relatively easy to install. And if you do not feel confident about installing PEX fittings in your home, you can hire a local plumber to perform the installation. Just be sure to check with the manufacturer before hiring someone to do the installation for you. If the fittings are improperly installed, you could risk voiding your warranty.

Another benefit of PEX plastic fittings is their energy efficiency. Unlike copper, PEX pipes are 30% faster to install. And they are proven to prevent leaks up to 75%. In addition to their energy efficiency, PEX pipes are non-corroding. Copper pipes consistently corrode over time. Copper is more expensive, but PEX is less expensive. A third advantage of PEX plastic fittings is their durability.


PEX pipe is a popular option for plumbing. It’s inexpensive, resistant to acids, and flexible, making it easy to run throughout the home without leaky fittings. While some people worry that PEX pipes might not be safe, this concern is mostly based on the plastics and taste. Here’s how to safely install PEX plumbing in your home. Read on to learn more about the pros and cons of PEX pipe and its benefits.

PEX tubing is 20 to 40% cheaper than copper and is a great alternative for small spaces. PEX tubing connects easily with crimp rings that snap into connector fittings. It’s fast and simple to install, too, and the cost is significantly lower than copper. PEX costs 50 cents to $2 per linear foot compared to two to four dollars per linear foot for copper. In addition, plumbers are more confident about PEX fittings.

Rodents love to chew on plastic, and this can cause problems for PEX water supply lines. Even with pesticides, rodents will eventually gnaw through the plastic tubing and cause major flooding. However, rodents are not the only threat to PEX. If you suspect that there is an infestation in the area, you should consult your plumbing contractor. Taking the time to inspect your system will save you money in the long run.

Another major disadvantage of PEX pipes is that they cannot be used outdoors. Because copper pipes tend to expand and crack during freezing, they are not ideal for outdoor use. While PEX pipes are cheaper than copper, they are also less expensive to install and repair. A downside to PEX is that rodents can chew through them and destroy the pipes, so it’s best to check with your plumbing contractor about your home’s water quality before installing PEX.

A few pros and cons of plastic PEX fittings can be listed here. Unlike brass fittings, they won’t leak easily. They are more durable than brass fittings and can withstand up to 10 years of continuous use without breaking. They don’t corrode in acidic water and won’t wear out over time. Another advantage of plastic PEX fittings is that they can be used with water systems of lower quality.