Gas PEX Pipe: A Robust and Safe Solution for Gas Systems

Gas PEX pipe is a specialised type of flexible pipe specifically engineered and certified for the safe and efficient distribution of natural gas and LPG (Liquefied Petroleum Gas) in residential and commercial settings in Aotearoa. It's critical to understand that standard water PEX pipe is NOT suitable for gas applications due to stringent safety regulations and material compatibility.

Gas PEX pipe in NZ is typically yellow in colour. This distinctive yellow outer layer serves as a clear visual indicator that the pipe is carrying gas and should never be confused with water lines.

Like Multilayer PEX (MLP) used for water and heating, Gas PEX often features a composite construction:

Inner Layer: A layer of polyethylene (PE) specifically formulated and tested for compatibility with natural gas and LPG.
Adhesive Layer(s): Bonding layers to ensure the integrity of the composite structure.
Aluminium Core: A central layer of aluminium that provides structural integrity and enhanced safety characteristics. This layer can help with crush resistance and provides a degree of electrostatic shielding.
Outer Layer: A yellow outer layer of polyethylene (PE) that provides protection and clear identification.

Key features and benefits of Gas PEX pipe include:

Specifically Engineered for Gas: All materials are chosen for their compatibility with natural gas and LPG, preventing degradation or permeation issues and ensuring long-term safety.
Enhanced Safety: The dedicated yellow colour, combined with the robust multi-layer construction, significantly enhances safety by preventing misidentification and providing a durable barrier. The aluminium layer contributes to crush resistance.
Flexibility: Gas PEX is flexible, which can simplify installation, especially in tight spaces or around obstacles, often reducing the number of required fittings compared to rigid metal pipes.
Corrosion Resistance: The polyethylene layers offer excellent resistance to corrosion from the surrounding environment.
Specific Fittings: Gas PEX systems mandate the use of specialised fittings that are certified for gas applications to guarantee secure and leak-proof connections. These fittings are typically made of brass or other compatible materials.
Strict Regulations and Standards: The installation of gas PEX pipe in Aotearoa is rigorously governed by local regulations and standards (e.g., NZS 5261:2016 - Gas Installation). Only certified gasfitters are authorised to install gas piping.

Therefore, always identify gas PEX pipe by its distinctive yellow colour. Never substitute other colours or types of PEX for gas lines. Adherence to all local regulations and installation by a certified gasfitter using approved materials and techniques is paramount. The yellow colour and the robust multi-layer construction are critical safety features for gas distribution systems.

Warranty: 50 Years