Corrosion resistance

A good choice even for aggressive substances – polymer chambers made of high-quality polypropylene.

View from above into a newly installed polymer chamber

Corrosion resistance

A good choice even for aggressive substances – polymer chambers made of high-quality polypropylene.

High-quality PP. The plus in safety

 

Whether chamber surfaces, covers or frames – renovations to the wastewater infrastructure are an ongoing issue. The material is the problem. In the past, mainly concrete chambers were used. They are susceptible to biogenic sulphuric acid corrosion. Hydrogen sulphide, which forms from wastewater, escapes into the sewer atmosphere and diffuses into the concrete. On walls that do not come into contact with water, sulphuric acid develops, which in turn reacts with the concrete. Scientists at Graz University of Technology* have shown that this results in corrosion rates that can completely destroy the concrete components within just a few years. In contrast, high-quality polypropylene, used to make AWASCHACHT PP, among other things, resists biogenic sulphuric acid corrosion, so that it can even be used to drain aggressive industrial wastewater.
 

All products

 

* Water Research 134; Advances in concrete materials for sewer systems affected by microbial induced concrete corrosion: a review

Polypropylene chamber
Graphic: load capacity of the chamber
Graphic: load capacity of the chamber

Advantages of polypropylene


Made entirely of PP, AWASCHACHT has virtually no surface that biogenic sulphuric acid can corrode. The new hybrid support ring has now closed the last gap.

The new hybrid bearing ring stands out with its firmly interlocked inner surface made of polypropylene. This results in further advantages in addition to consistent corrosion resistance:

  • Absolute tightness between cone neck and bearing ring
  • Easier installation thanks to smooth inner surface
  • Colour differentiation between wastewater, combined wastewater and stormwater


Available for AWASCHACHT PP DN 1000/800 and DN 600.



Cone neck with and without hybrid bearing ring in comparison


Cone neck with and without hybrid bearing ring in comparison – useful information from REHAU

Further topics

Various polymer chambers lined up side-by-side on a construction site

Service life

Sewer pipe laid in the ground, lorry traffic running over it on the road

Dynamic load

PP pipes made of pure, filler-free polypropylene delivered to the construction site

Impact strength

Water penetrating a leaking concrete chamber

Infiltration water-proof

 

Downloads 

 

View from four different screens: smartphone, tablet, notebook and PC

Documents for download

 

Instruction manuals, handbooks, technical information, catalogues, price lists and certificates are available for download.

ePaper download portal

 

CPD

Discover knowledge

EDUCATE: We are dedicated to providing our customers with the most-up-to date training available. We offer CPD's throughout the UK, product training and design workshops, which can all be booked via the REHAU Hub.

Discover knowledge

Engineering progress

Enhancing lives

Maximum cart size of 3 items has been reached!

Your sample cart items:
Type
Decor
Collection