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MultiPex® piping system

The Roth MultiPex® piping system is designed for executing both water and heating installations.

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The basis of the system is a Pex-C pipe in the familiar standard dimensions: 12 x 2.0 mm, 15 x 2.5 mm, 18 x 2.5 mm, 22 x 3.0 mm, 28 x 4.0 mm and 32 x 4.4 mm.
A new range of fittings has been devised for the system, featuring wall boxes and manifolds with push-in connectors that are easily assembled without the use of expensive tools, and there is the option of dismantling the connection again. Of course, it is also possible to use our traditional PX couplings for Roth MultiPex® piping.
The Roth MultiPex® piping system includes a large number of components that simplify and improve the piping installation.
The Roth MultiPex® piping system has been approved in accordance with NORDTEST

NORDTEST NT VVS 129 is a joint Nordic approval method for pipes in piping systems. This means that piping, lined piping, wall boxes, lead-throughs, distributor cabinets etc. have been tested as a complete system in which all the components work together to make up a complete pipe-in-pipe system. Both the cabinet and all lead-throughs must be watertight so that any leakage is returned to the cabinet drain, or to a room with a sump. Pipes in the piping system must also be replaceable in accordance with the Nordtest method. When you install a Roth pipe in a piping system, you simply minimize the risk of water damage.


The Roth MultiPex® piping system satisfies the product documentation requirements set out in the Norwegian Planning and Building Act and accompanying Technical Regulation (TEK) with properties, field of application and conditions for use as set out in this document. Technical Approval No. 2556.