PEX pipe will expand if frozen and contract to its original shape when thawed. But putting frequent stress on the system weakens it, increasing chances of failure and leaks. So, to preserve the strength of your pipes, you should use the same standard insulation precautions with PEX to keep it from freezing.
Can PEX pipe burst from freezing?
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.
How cold can PEX withstand freezing?
“For similar material thickness, PEX is 68 times less conductive than copper, which can delay the freezing of fluids within PEX tubing, potentially preventing freeze events. In fact, PEX tubing remains flexible and can still be bent at temperatures below -40°F (-40°C).
What happens when PEX pipe freezes?
Unlike rigid materials like steel and copper, PEX piping stands up well to expansion caused by frigid temperatures. But pipe ruptures are possible if the weather gets cold enough. While PEX pipes don’t freeze as easily as copper, when they do freeze and thaw repeatedly, they start to lose their flexibility.
What temperature can PEX withstand?
2) 180°F is the maximum fluid temperature for PEX tubing.
As the temperature increases the max operating pressure drops. Most PEX tubing will be rated for: 160 psi at 73°F.
How do you keep PEX pipes from freezing?
Below are a few tips when insulating PEX pipes:
- Use foam to insulate PEX pipes. Foam is the most popular insulation material for PEX pipes because they are flexible. …
- Clean the pipes using a wet rag before wrapping them in foam.
- Seal the PEX tubes completely by using insulation tape on the foam insulation’s ends.
Should PEX pipe be insulated?
Yes, insulation is an essential part of installing PEX piping, as the lack thereof could lead to unfortunate outcomes. It is more resilient against fluctuations in temperatures than other commonly used materials. It’s flexible pipes and does not act as a conductor for heat and cold as easily as metal materials do.
What is wrong with PEX plumbing?
PEX piping has a maximum bend radius, which can lead to stress on the pipe caused by improper installation. In addition, extreme bends and kinks place a very high local stress on the wall of the pipe, making it more susceptible to oxidative degradation.
