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.
Medium pipe according to DIN and EN standards | PE 100-RC medium pipe | dimensionally added protective jacket made of a modified polyolefin compound | Bi-axially oriented polymer matrix film with embedded metallic diffusion barrier
Medium pipe in black (if necessary with 4 longitudinal blue stripes distributed around the circumference) | Medium 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
Drinking 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
Permeation-tight | GEROfit® REX for installation in contaminated soils | Permanent external monitoring of the PE 100-RC materials and the pipe | Gerodur drinking water pipes with additional regular organoleptic testing - Qplus label
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.
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).
In the ploughing method, the soil is displaced by a plough blade and the pipeline is placed on the bottom of the soil.
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.
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.
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.
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.
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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