Environmental Double Containment Pipe System


Double containment piping systems are among the most economical and reliable methods for protecting against corrosive or hazardous fluids leaks from primary piping.  The U.S. Environmental Protection Agency (EPA) has directed the underground transport of hazardous materials to be protected from release into the environment in its Standard 40 CFR, Part 280 & 281.  Further, in accordance with the Oil Pollution Prevention regulation (40 CFR Part 112), the U.S. EPA requires specific facilities to prepare, amend, and implement Spill Prevention, Control, and Countermeasure (SPCC) Plans.  

ENI-GARD™ is a double containment pipe system designed for these environmental requirements. ENI-GARD can protect against leakage from expensive environmental accidents and hazardous chemicals or materials caused by corrosive leaks from the primary carrier piping. This innovative system not only protects the environment from contamination, but also ensures compliance with all federal and state-level regulations and the safety of protecting people’s health.

The ENI-GARD system consists of a carrier pipe, a containment pipe coated with urethane or a fiberglass-reinforced polymer (FRP) outer jacket, and an optional PermAlert® cable leak detection system.

Formerly Ultra-FS, Ultra-IW, Ultra-HT, Double-Pipe, Double-Pipe Type FS, Double-Pipe Type IW, Double-Pipe Type HT, Low-Temp HI-GARD, Mid-Temp HI-GARD


Temperature Range

32 °F (0 °C) to 300 °F (149 °C)

For specific temperature requirements, please contact us at askpermapipe@permapipe.com


Pipe Size

PERMA-PIPE can process a wide variety of pipe lengths, weights, and diameters, which can also be altered if required.  Please contact PERMA-PIPE to find the best facility to meet the needs of your project and for any specific questions about pipe size that can be accommodated.


Complies With

CSA          en253


Additional Certifications