IRVING, TX — The Plastics Pipe Institute (PPI) is warning contractors, distributors, engineers and specifiers to verify third-party certification before purchasing or installing PEX tubing after identifying products being sold in the United States and Canada that may not comply with required industry standards.

According to PPI, some crosslinked polyethylene (PEX) tubing products are being marketed for plumbing and mechanical applications despite not being third-party certified to mandatory standards, potentially creating performance, inspection and liability concerns.

“Major model codes require that PEX tubing products for plumbing and mechanical applications shall be marked with industry standards such as ASTM F876 or CSA B137.5 and shall be third-party certified,” stated Lance MacNevin, P. Eng., Director of Engineering for PPI's Building & Construction Division. He emphasized that “The use of non-compliant, non-certified tubing in demanding plumbing and mechanical applications can lead to premature failure, property damage, and potential legal liability throughout the supply chain.”

Products Reportedly Sold Through Multiple Channels

PPI said it has received reports that non-compliant and non-certified PEX tubing marketed under various trade names has been offered through several distribution channels, including online retailers.

Although the tubing is marked with ASTM F876 and CSA B137.5, indicating compliance with industry standards, PPI said the products are not listed or labeled by recognized third-party certification agencies that verify compliance with those standards.

The association noted that PEX tubing used in potable water and hydronic heating systems is expected to meet the highest performance and compliance standards required by code officials, engineers, insurers and building owners.

Improper Products Can Increase Business Risk

Beyond potential product failures, PPI said the use of non-certified tubing can expose contractors, distributors, retailers and specifiers to legal liability if an installation fails.

The organization also warned that using non-compliant materials can result in failed inspections, costly removal and replacement of installed systems, warranty claims and reputational damage that extends beyond a single project.

“PPI recommends that only PEX tubing which is properly third-party certified and clearly marked with the third-party certification agency logo or logos (i.e., listed and labelled) should be specified, purchased, and installed,” MacNevin continued. “Third-party certification records can also be found on certification agency websites and/or requested from the manufacturer or supplier of the PEX tubing.

PPI also recommends that PEX tubing lacking third-party certification markings should be treated as non-compliant and unsuitable for use in code-regulated applications. Ensuring proper certification is essential to maintaining compliance, minimizing risk, and protecting both business interests and public health and safety.

Learn more at plasticpipe.org/bcd.