Can you use PEX crimp rings underground?

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asked May 16, 2022 in Other-Home/Garden by FGjple (7,970 points)
Can you use PEX crimp rings underground?

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answered May 21, 2022 by JorelFlorke (8,300 points)
PEX crimp rings can be used underground but it's a good idea to wrap them in some rubber wrap to help protect them.

PEX is good for underground.

When underground PEX pipe can last a very long time and probably would last over 100 years after being laid in the ground.

PEX plumbing pipe is a type of flexible plumbing pipe that is made from from high-density polyethylene.

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.

All this makes PEX an excellent piping material for hot and cold water systems, especially since it is flexible and well adapted for temperatures below freezing all the way up to 200 degrees Fahrenheit.

PEX is easy for plumbers to install and has fewer joints, bringing your costs down.

PVC and CPVC are not the same size or the same pipe as PVC is rated for cold water and the CPVC pipe is rated for hot water.

The CPVC pipes use different size fittings than the PVC pipe.

CPVC is measured by O.D., which makes its sizing similar to hard copper.

PVC is measured by I.D., which makes its sizing similar to iron pipe.

The temperature limit on plastic pipe depends on the type of plastic pipe.

At 230°F, Corzan CPVC has a heat deflection temperature – and thus a maximum use temperature -- much greater than most other commonly used thermoplastic piping materials.

The maximum recommended operating temperature for PVC pressure pipe is 140°F.

PVC pipe and conduit becomes stiffer with decreasing temperature and more flexible with increasing temperature.

As with dimensions and pressure capacity, published pipe stiffness figures are applicable only for 73°F operating temperatures.

Plastic Pipe can be used for hot water as long as you use the proper plastic pipe such as red Pex for hot water and CPVC for the PVC type of plastic pipe.

CPVC pipe can be used for hot water as well as cold water.

Although PVC can only be used for cold water and not hot water.

CPVC is a specially engineered thermoplastic and its molecular structure makes it different from conventional plastics.

Its internal structure makes it an ideal choice for hot and cold water plumbing.

CPVC as a material has a glass transition temperature of 113-115 °C.

CPVC can be used for hot water but not for steam since CPVC begins to melt at temperatures of 217 F and becomes soft at 200 F.

For steam you have to use brass pipe, steel pipe or copper pipe.

Copper tubing is used for a variety of things such as crafts and even plumbing.

Copper Tubing can be used for plumbing of water lines, for refrigerant line sin air conditioners, central air conditions, window air conditioners, refrigerators, freezers and anything else that uses refrigerant.

Copper Tubing is also sometimes used for propane lines such as in RVs and motorhomes, campers and even for home use.

Copper tubing is most often used for heating systems and as a refrigerant line in HVAC systems.

Copper tubing is slowly being replaced by PEX tubing in hot and cold water applications.

There are two basic types of copper tubing, soft copper and rigid copper.

Tubing is usually more expensive than pipe due to tighter manufacturing tolerances.

Interestingly, while the stated and measured OD's of tubing are almost exact in most cases, copper tubing generally has a measured OD that is 1/8” larger than stated OD.

As such, maybe it should be called copper pipe.

While other types of metal pipes such as lead, iron, and galvanized steel have faded out, copper plumbing pipes have stood the test of time because they don't release dangerous materials into water.

In addition, copper pipes are recyclable and are able to be installed outside.

Although it is a durable metal (capable of withstanding 1,000 psi of pressure), copper is also lightweight, which makes it easier to work with (saving on labor costs) and also easier to extend over long stretches without supports.

It's also less expensive than steel and lead-free.

Today, over 80 percent of new homes are constructed with copper piping, making it the industry standard for residential plumbing.

Capable of withstanding 1,000 pounds of pressure per square inch, copper is resistant to internal deterioration including rusting and corrosion that trigger leaks and pipe ruptures.

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