No, using PVC pipe for compressed air piping is extremely dangerous and not recommended by multiple associations and manufacturers.
Why PVC and Compressed Air Don't Mix
Based on expert recommendations, polyvinyl chloride (PVC) piping is highly unsuitable for compressed air applications. The primary reason, as highlighted by industry sources, is the significant safety risk it presents.
When used with compressed air, PVC pipe can become brittle over time. Unlike piping materials designed for pressure, PVC lacks the necessary strength and ductility to handle the stress and vibration inherent in compressed air systems. Should a failure occur, PVC pipes can shatter violently, sending sharp fragments (shrapnel) over a wide area. This poses a serious safety hazard to personnel and equipment.
Key Concerns with PVC for Compressed Air
- Extreme Danger: The primary warning from experts is that using PVC for compressed air is "extremely dangerous."
- Not Recommended: Multiple associations and manufacturers explicitly advise against its use for this application.
- Brittleness and Shattering: Under pressure and vibration, PVC can become brittle and is prone to explosive failure, creating hazardous shrapnel.
What PVC is Typically Used For
The reference material notes that PVC piping is commonly utilized for transporting liquids, primarily water, in various applications. Its strength and suitability are geared towards the hydrostatic pressure of liquids, not the dynamic and pneumatic forces of compressed gases.
| Application Type | PVC Suitability | Notes |
|---|---|---|
| Compressed Air | Dangerous | Explicitly NOT Recommended due to safety |
| Liquids (e.g., Water) | Suitable | Common use case |
Using the correct type of piping material, such as metals (steel, aluminum) or specially designed plastic (like HDPE for certain applications) and composite systems rated for compressed air, is essential for safety and system integrity. Always consult with a qualified professional and adhere to relevant safety standards when designing or modifying compressed air systems.
