So far, cost-effectiveness, durability, and flexibility have made PEX tubing a favorite for many plumbing and heating systems. But the question is: to what degree is PEX tubing high-temperature-resistant? At OutdoorBoiler.com, it’s always important to understand the limitations of PEX tubing in an effort to give guarantee to the safety and longevity of your heating systems, especially when dealing with extreme temperatures.
This article will explore in greater detail PEX tubing’s heat resistance, key questions to its effectiveness at high temperatures, and some recommendations for the best PEX tubing type for hot water systems. We will also introduce you to several products designed and engineered to add an extra layer of protection to PEX pipelines in these high-temperature environments.
What Temperature Can PEX Withstand?
The PEX tubing can work within quite a temperature range and thus finds applications in many contexts. In general, PEX tubing can normally bear up to temperatures of 200°F for short periods and up to 180°F continuously.
Another determinant of the extent at which PEX tubing may withstand heat is the PEX type being used. Specifically,
PEX A: Known for its flexibility, PEX A holds out slightly at higher temperatures than PEX B.
PEX B: It’s not as flexible as PEX A, yet still very sturdy and applicable with high temperature resistance; especially recommended for hot water systems.
PEX C: Less common, it’s a lower-temperature version of PEX A and PEX B.
With PEX tubing, you will need to select the proper type for high-temperature applications.
What Temp Does PEX Burst?
Knowing the PEX tubing bursting temperature will help keep your plumbing safe. Compared to other types of piping materials, such as copper, that can be damaged from the pressure exerted by water that turns to ice, the PEX tubing is capable of expanding when it comes into contact with freezing temperatures. Nevertheless, after sometime the impact of the temperatures successively decreases the capability of the material until it fails.
Generally, PEX tubing will have a burst pressure of about 800-900 psi at 73°F; however, this also decreases with rising temperatures. At temperatures higher than 180°F, the burst pressure will decrease significantly. This rating is also subject to long-term exposure to temperatures higher than recommended, which will result in premature failure of the tubing.
Which PEX Is Best for Hot Water?
On the subject of hot water systems, look no further than PEX-B. The PEX B tubing is created using the silane method, making it very resistant at high temperatures and to chlorine. This makes it suitable for hot water plumbing systems where performance at higher temperatures is paramount.
O2 Barrier vs. Non-Oxygen Barrier PEX
Also, when choosing PEX tubing, you need to decide if an O2 barrier is needed. O2 barrier PEX is designed for closed-loop systems; radiant heating is one of the most common applications. The barrier prevents oxygen from passing through the tubing; it halts the oxidation process that can corrode metal components in the system.
- O2 Barrier PEX: Recommended for closed systems like radiant heating, where it protects against oxygen infiltration.
- Non-Oxygen Barrier PEX: Ideal for open systems, such as domestic hot water supply, where the risk of corrosion is less of a concern.
Additional Protection for High Temperature PEX Tubing
For systems exposed to high temperatures, additional protection for your PEX tubing is essential. Here are some products that can enhance the durability and heat resistance of your PEX pipes:
- Underground Insulated Pipe PEX O2 Barrier-: This product offers an O2 barrier for closed systems, providing extra protection against oxygen infiltration and helping to maintain system integrity.
- Underground Insulated Pipe Ultra PEX –: Designed for high-temperature applications, this insulated pipe helps prevent heat loss and ensures your system operates efficiently.
- Insulated PEX Ultra 1″ O2 Barrier –: Another excellent option for closed systems, this insulated PEX tubing with an O2 barrier is designed to withstand high temperatures while preventing oxygen from entering the system.
If you’re looking to get Insulated PEX Pipes, visit OutdoorBoiler.com.
Conclusion
It’s a versatile and durable run for plumbing and heating systems; much awareness is required on its heat tolerance in applying it safely and effectively. Of all the three options, PEX B is the best system for hot water applications due to its excellent temperature resistance.
In addition, choosing an O2 barrier or non-O2 barrier PEX depends on whether you are working with a closed or open system.
For more protection at high temperatures, use insulated PEX products like Heat Mizer. Such products will enhance performance and increase the life expectancy of PEX tubing to help your system remain safe and efficient under any extreme conditions.