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Can You Use PVC for Air Lines?

Proper piping in compressed air systems is crucial for your business's operational efficiency and safety. While some might consider polyvinyl chloride (PVC) because of its durability, versatility and affordability, it's not the best piping for compressed air.

Safety Concerns With Using PVC for Air Lines

PVC is a synthetic polymer used for pipes to transport liquids. When PVC piping leaks when transporting water, the pipe just splits and releases water at a lower pressure. PVC pipe in any compressed air application is hazardous. 

However, the situation is different with air, which is compressible. PVC is not designed for high-pressure systems. Compressed air inside the piping can swell and burst, leading to catastrophic failure. 

Pressure Rating Issues

Most PVC pipes are rated for pressure ranging from 300 pounds per square inch (PSI) to 600 PSI, while industrial compressed air systems are pressurized between 100 PSI and 125 PSI. Based on this information, you might think PVC pipes can handle compressed air. However, the PSI rating is:

  • For the pipe only, not including seals and joints. PVC pipes fail at the joints because most PVC adhesives are not compatible with air compressor lubricants. 
  • Temperature-dependent. PVC pipelines are more prone to brittleness and shattering if the temperature drops below freezing point. 
  • Cut in half when it drops at extremely high temperatures. The maximum rated temperature of most PVC piping is 140 degrees Fahrenheit. Once the air inside the pipe reaches 110 degrees Fahrenheit, the pipe rating is cut in half, leading to a higher risk of an explosion. 

Health Risks

When PVC is under pressure or heated, harmful chemicals are at risk of explosion and contamination. If it is burned improperly, it can also emit a highly toxic compound called dioxins. 

Wear and Tear

PVC pipes become brittle over time, and the deterioration of the pipes increases the chance of a leak or explosion.

What Types of Piping Are Suitable for Compressed Air?

For safety and durability, manufacturers and multiple associations recommend either:

  • Stainless steel air compressor pipes: Stainless steel is strong, durable and rust-resistant.
  • Aluminum piping: Aluminum is lightweight and cost-efficient, and its noncorrosive properties ensure durability and longevity.

Count on Chicago Pneumatic for High-Quality Air Compressor Pipes

While using PVC for compressed air may seem like a cheap, easy option, it's hazardous. At Chicago Pneumatic, we offer AirNet stainless and aluminum solutions that are easy to install and come backed with a 10-year warranty. Contact us today for expert recommendations.

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CP service technician in fron t of CP compressor
Whether you have questions about which compressor is right for you, or if you’re ready to improve your operations and start saving on expenses. Chicago Pneumatic has been around for over 100 years because we offer reliable and hardworking air compressors, as well as expert advice and support.

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