GEROfit® REXBarrier pipe. Permeation-tight pipe system.

GEROfit® REX prevents the permeation of pollutants through the pipe wall. It thus permanently protects the drinking water to be transported. It is suitable for installation in contaminated soils and offers permanent protection against the risk of contamination. Predestined for installation in flooded areas.


  • SDR
    7,4 | 11 | 17 | more on request
  • Dimension
    32 - 630 mm
  • Usage
    Potable water
  • Pipe structure
    Medium pipe according to DIN and EN standards | PE100-RC media pipe | dimensionally added protective jacket made of a modified polyolefin compound | Bi-axially oriented polymer matrix film with embedded metallic diffusion barrier
  • Marking
    Media pipe in black (if necessary with 4 longitudinal blue stripes distributed around the circumference) | Media pipe with complete metre marking according to DVGW | Protective jacket in blue with four longitudinal green stripes distributed around the circumference | Protective jacket with complete metre marking according to DVGW
  • Application/­intended use
    Potable water pipe for underground installation in accordance with standards and DVGW approval | Installation in open trenches with and without sand bedding possible | Trenchless new installation and rehabilitation | Installation in contaminated soils in accordance with KIWA BRL K17101
  • Special feature(s)
    Permeation-tight | GEROfit® REX for installation in contaminated soils | Permanent external monitoring of the PE100-RC materials and the pipe | Gerodur potable water pipes with additional regular organoleptic testing - Q-plus label
  • Material
    Media pipe PE100-RC | protective jacket modified polyolefin compound | bi-axially oriented polymer matrix film with embedded metallic barrier layer
  • Standards
    DIN EN 12201 | DIN 8074/­8075 | PAS 1075 | DVGW GW 335 – A2 | Potable water pressure pipe system KIWA BRL K17101
  • Certification
    KIWA | DVGW | DIN CERTCO /­ TÜV Rheinland | international on request | ISCC Plus certification on request
  • Delivery forms
    straight length | coil | drum
  • Tender Texts
    GEROfit® REX potable water pressure pipe at Ausschreiben.de
    GEROfit® REX sewage pressure pipe at Ausschreiben.de

This product is also available with ISCC Plus sustainability certification on request. We have summarised all the information for you here -> ISCC Plus

System components

  • Gerodur GEROfit® REX fittings

    Fitting parts

    Professionally prefabricated fittings such as bends, T-pieces, stub ends and reducers with intelligent metallic diffusion barrier.
  • Gerodur GEROfit® REX, permeation-tight tapping valve without additional auxiliary tools especially for use in contaminated soils

    Tapping valve

    New: Permeation-tight tapping valve with side outlet and integrated stainless steel tapping cutter.
  • Gerodur GEROfit® REX VLUX adapter for a pressure class-compliant, pull-out-proof and stable connection between tapping valve and pipe

    REX VLUX® Adapter

    Exceptionally easy to install: VLUX® adapter for GEROfit® REX tapping valve for a permanent, permeation-tight outlet combination.
  • Gerodur REX Tape®, self-adhesive permeation barrier tape for the professional addition of the diffusion barrier at joints of GEROfit® REX pressure pipes.


    Tested REX aluminium tape for the subsequent permeation-tight reprotection of welded joints and exposed pipe surfaces.
  • Gerodur GEROfit® sealing tape, for a watertight secondary coating of the stripped weld seam area of GEROfit® REX and GEROfit® NEXUS pressure pipes.

    Sealing tape

    Highly tear-resistant GEROfit® sealing tape for a watertight reprotection of welded joints and exposed pipe surfaces.
  • Gerodur GEROfit® blue fabric tape, for mechanical protection of the stripped weld seam area of GEROfit® REX and GEROfit® NEXUS pressure pipe systems.

    Fabric tape

    Scratch-resistant fabric tape for reprotection of the welding area. Easy handling thanks to subsequent curing. High flexibility when the pipe is bent.


Peeler Set

The power pack for protective jacket pipes according to PAS 1075 type 3. For quick and easy removal of the protective jacket.
More information
Gerodur GEROtool® Pocket Peeler, for peeling protective jacket pipe

Rerounding clamps

The tackler for maximum rounding force when welding with electrofusion sockets.
More information
Gerodur Rerounding clamps - The clamp against ovalities



Processing instructions

Suitable installation

  • Gerodur laying in sand bed Computer graphics

    Sand bedding

    When laying in a sand bed, the excavated material must be replaced with a sand bedding in accordance with DIN EN 805. Restrictions on the grain sizes of the bedding material must be observed.
  • Gerodur laying without sand bed Computer graphics

    Without sand bedding

    Due to the verification by an independent testing institute, the installation is possible without a sand bed. This eliminates the additional expense of replacing the excavation with a sand bedding in accordance with DIN EN 805 (transport, landfill).
  • Gerodur ploughing method Computer graphics


    In the ploughing method, the soil is displaced by a plough blade and the pipeline is placed on the bottom of the soil.
  • Gerodur milling process Computer graphics


    In the milling process, a pipe trench is cut into the subsoil by machine and the pipeline is laid on the bottom of the trench.
  • Gerodur pipe bursting computer graphics

    Pipe bursting

    Static pipe bursting is the renewal of the old pipeline along the same of the old pipe route, which is shattered by the bursting head and the remaining fragments are pressed into the surrounding soil.
  • Gerodur Horizontal Directional Drilling (HDD) computer graphics

    Horizontal Directional Drilling (HDD)

    The new installation by HDD is usually carried out in three successive work steps. With the continuous pilot borehole, which is controlled by positioning the route is determined. This is followed by the widening of the borehole and the pulling in of the pipe string.
  • Gerodur relining installation computer graphics


    In the case of relining with annular space, the new pipe string with a smaller cross-section is pulled into the cleaned old pipeline using a pull-in device.
  • Gerodur soil displacement method computer graphics

    Soil Displacement Method

    In the soil displacement method, a pneumatically operated displacement hammer, a so-called "rocket", is used to excavate an underground cavity. The new pipeline is then pulled into it.

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Want to find out more?
We look forward to hearing from you.
Gerodur MPM Kunststoffverarbeitung GmbH & Co. KG
01844 Neustadt i. Sa.
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