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Both grades comply with operational conditions 10 bar at 70 °C however the standard pipe has a thicker aluminium core and even higher performance in fail safe conditions.
A PE-RT or PE-Xc pipe expands more because it is a solid plastic pipe. A RIXc or standard pipe has an aluminium core and therefore expands less.
There is physical and chemical cross-linking. Tubes are cross-linked to optimise the strength and durability of the tube.
Chemical cross-linking is achieved by adding peroxide or silane to polyethylene. A physical cross-linking is created by exposing the tube to electron beams. Henco uses physical cross-linking because it is the purest cross-linking.
No, this is not permitted by law.
1. The manufacturer should be consulted before using disinfectant products or applying a thermal cycle where temperatures exceed the specified usage temperature. The following products can be used:
Diluted with water at a concentration of 1:13000 (± 4 ppm Bleach) in accordance with the instructions. Treat for a maximum of 5 minutes at 90°C and only perform one treatment per year
Diluted with water at a concentration of 1:1000 (± 500 ppm hydrogen peroxide) in accordance with the instructions. Treat for a maximum of 5 minutes at 90°C and only perform one treatment per year.
Maximum 10% diluted with water. Treat for a maximum of 5 minutes at 90°C and only perform one treatment per year
It should be noted here that these treatments will only have a long-term effect if the source of the contamination is dealt with professionally
2. Disinfection according to DVGW W557
The Henco Multilayer pipes will resist a short period of chemical disinfection in compliance with table 1 of DVGW guideline W557. The maximum allowed concentrations, the maximum allowed temperature, the maximum allowed treatment time and active elements as shown in this table must be strictly observed.
The test plugs may be only used for up to 3 months under a maximum constant pressure of 10 bar. The plugs are not suitable for making permanent sealings and are purely for testing the system. They are not reusable
Yes, for example as ground pipes. In this case, we recommend combining the Henco standard multilayer pipe with the PVDF press fittings. It is best to protect the pipe additionally with, for example, a PVC protective tube. Please note that Henco inspection certificates only apply to indoor installations.
Yes, at a maximum pressure of 10 bar and ambient temperatures between -10°C and 40°C.
Only if the soil does not contain any chemicals and the pipe is protected from external damage. Brass fittings should always be protected from corrosion and we also recommend protecting PVDF fittings from external impact with, for example, a PVC pipe.
Yes, the pipes may be exposed to sunlight for a short period of time. Polyethylene is not UV-resistant, so Henco tubes should not be permanently exposed. For specific outdoor applications, Henco can produce unique UV-resistant pipes on request.
The minimum temperature for Henco multilayer pipes and PVDF press fittings is -20°C. For solid plastic pipes, the minimum temperature is 7°C.
It can if the paint is water based.
We recommend draining Henco pipes in good time if there is a risk of freezing. To prevent freezing, pipes can be thoroughly insulated or fitted with a heat tape.
Our internal threads are always straight gas threads. Marked with G. G stands for ISO 228. In addition, our external threaded fittings are always conical threads. Marked with R and ISO 7/1. R stands for tapered. To have a good seal, a conical thread must always be tapered into a straight thread.
Female threaded fittings have straight threads and only taper should be screwed in to have good sealing. Only when there is a seal such as a flat seal or o-ring can it be done with straight thread.
Couplings with flat seal can only be combined with straight thread.
Henco tubes up to and including 26 mm diameter can be bent with the appropriate tools from the Henco product range. For pipes with a diameter from 32mm onwards, it is best to use couplings.
Can Henco tubes be rinsed with hydrogen peroxide/sodium hypochlorite/chlorine dioxide?
When rinsing pipes, it is best to consult the table below. In case of additional questions, please contact your Henco representative.
Table 1: disinfectants for short-term chemical disinfection of Henco ML pipes according to DVGW W577
Max. concentration (*)
Maximum duration and temperature
Hydrogen proxide (H2O)
Solution in water 50%
150 mg/l H2O2
Sodium hypochlorite NAOCl
Aqueous solution containing up to 150g/l "free chlorine"
Chlorine dioxide ClO2
6 mg/l ClO2
(*) The concentration indicated is that of free chlorine.
Maximum frequency: once a year
Yes, however mechanical compression using an olive or threaded joints should not be embedded.
BE and TH press contours
The locating collar ensures that the pressing sleeve is correctly positioned in the pressing jaw.
BE press contours