Tigris Multi-layer Pipe

Multi-layer
Composite Pipe

The multi-layer pipe is integral to the exceptional performance of Tigris K5, M5 and smartFix uniting the benefits of metal and plastic into one composite solution. The pipe comprises an inner plastic layer of cross-linked polyethylene, an outer plastic layer of HDPE and a butt welded aluminium layer in between. The three layers are uniformly connected together by means of bonding agents. This produces a pipe structure with a total of five layers.

The aluminium layer in the pipe reduces thermal expansion (with a performance comparable to copper) and acts as an oxygen diffusion barrier, preventing corrosion and any biofilm build up.

At the pipe’s core, the PEX-C inner layer combines dimensional stability with flexibility so that the pipe is easy to bend, reducing the number of fittings required and the time – and therefore cost – of installation.

Benefits and Advantages

  • Strong, Resistant, and Flexible Pipe

    The Wavin multi-layer composite pipe is diffusion-proof. The uniform plastic-metal construction offers a pipe that is dimensionally stable, resistant to unwanted movement yet flexible. With easy bending, the installation is easy and time required can be reduced to a minimum.

  • Radiator and Underfloor Heating

    The Wavin multi-layer composite pipe can be used for both radiator and floor heating systems. Being 100% resistant to oxygen diffusion, temperature resistant, supple and flexible, it offers outstanding properties for all types of heating installations.

  • Corrosion Resistance

    It can be safely used in mixed installations as there is no risk of electrochemical corrosion. Moreover, the plastic outer sheath allows embedding of the Wavin multi-layer composite pipe directly in the screed.

  • Limited Length Expansion

    The internal aluminium layer has a decisive effect on the thermal length expansion of the composite pipe. Due to the permanent connection with the plastic layers, the length expansion is determined by the expansion co-efficient of the aluminium layer and therefore roughly equal to that of a metal pipe.

  • Easy Installation

    The Wavin pipe can be handled by a single installer. Optimal aluminium thickness means it can be bent by hand for pipes up to 20 mm diameter. Bending springs and bending pliers may be used to assist and should always be used for diameters 25 mm and above.

  • Install Across Fitting Ranges

    The Wavin pipe can be installed with the polymer fittings from the Wavin Tigris K5 press fitting range and the Wavin smartFiX push-fit fitting system. It can equally be used with the metal fittings of the Tigris M5 press fitting range.