Generally not recommended
PPR Fittings are generally not recommended for compressed air systems. They are designed for liquid water systems. Compressed air has different pressure and safety requirements. Example: use metal or specialized air piping.
PPR is not gas-tight
Polypropylene may allow air to permeate through the material. This leads to pressure loss over time. PPR Fittings are not gas-tight.
Pressure rating for air
PPR pressure ratings are based on water pressure. Air systems have different pressure requirements. Safety factors differ for compressed air. PPR Fittings are not rated for air pressure.
Temperature and air
Air can heat up during compression. High air temperatures can soften PPR. This affects the fitting's strength. PPR Fittings are not suitable for hot compressed air.
Risk of failure
A PPR fitting failure under air pressure can be dangerous. The fitting can burst with explosive force. This poses a safety hazard. PPR Fittings should not be used for compressed air.
Example: factory air system
A factory uses compressed air for tools. The owner considers PPR fittings. PPR Fittings are not recommended. Example: use steel or aluminum pipes for air.
Example: low-pressure air line
An industrial system uses low-pressure air at 2 bar. Some might consider PPR fittings. PPR Fittings are still not recommended. Example: the fitting is not designed for air.
Example: pneumatic control system
A control system uses compressed air for actuators. PPR Fittings should not be used. Example: use specialized pneumatic tubing instead.
Codes and approvals
PPR pipes are not listed for compressed air systems. Building codes do not approve them. Air systems require specific certifications. PPR Fittings lack air approvals.
Safety concerns
Air leaks can be dangerous in industrial settings. Fitting failure can cause accidents. PPR Fittings are not safe for compressed air.
Manufacturer guidance
Most manufacturers do not recommend PPR for air. The product is designed for water only. Follow manufacturer guidance. PPR Fittings are for water systems.
Final compressed air summary
PPR Fittings are not recommended for compressed air. PPR is designed for liquid water only. Air permeates through the material. The fittings are not rated for air pressure. High air temperatures can soften the material. Building codes do not approve PPR for air. Use metal or specialized air piping. PPR Fittings are for water systems only. Example: choose the right material for compressed air.