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Marie Vašáková & Kateřina Veselská
are available from 7 00 to 18 00

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Ing. Vojtěch Dědic
is available from 7 00 to 18 00

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Infoline - working days: 7 00am - 6 00pm
+420 565 777 111
Bottoms of inspection wells and street inlets, manufactured from polypropylene, introducing homogenous wall and high ring stiffness, excellent in heat resistance of up to 95°C. This is the basis for building inspection wells for home sewage connections and yard inlets as parts of rain drainage systems.
RV System
  • 100% recyclable
  • Durability to 60°C


The RV-System OSMA is a modern, advanced system of well components designed for building inspection wells and yard inlets in difficult conditions. The RV has been designed and developed using the latest knowledge of plastics mechanics, as well as under the requirements of builders and operators of technical mains.


In the realm of thermoplastic materials, polypropylene (PP) holds a most specific position thanks to its high thermal and chemical resistance and unrivalled toughness. This material processes very well, which makes an excellent choice for the production of well bottoms with absolute smoothness of the inner wall that resists abrasion, clogging, as well as outer soil pressure. Unplasticised polyvinylchloride (PVC-U) is regarded as the advanced and time-proven material. This is used in production of well pipes and telescopes that have their inner wall resistant to abrasion and a tough outer layer which is resistant to all typical materials used for pipe gritting and compaction.


Well bottoms introduce the benefit of a strengthened, ribbed wall that is resistant to ground pressure. The system of flexible joints between the well pipe and the telescopic extension, which may be fitted with various cast-iron lids, easily withstands wheel pressure of up to 400 kN.


The tightness of system joints in both positive and negative pressure up to 0.5 bar is governed by a multi-blade sealing segment made from durable rubber. The element, which introduces cleaning, spacing, positioning and sealing blades, is fitted into a special chamber inside the neck. The entire system also provides excellent tightness even when the piping is deformed or misaligned.

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The RV-System OSMA® represents a full-scale system of individual elements that enable construction of wells with various depths. Furthermore, additional connection of new sewage branches is possible, as well as connection to various sewage systems.


Due to their low weight, the production, handling and assembly of the RV-System OSMA® plastic wells requires lower energy input, produces less carbon dioxide and the assembly is completed faster than when using concrete or cement systems. What is more, the entire system allows easy rework, which delivers compliance to stringent ecology criteria.

Maximal operating temperatures can be found in individua catalogues of waste and sewage systems and sealing.

Sealing Area of application- temperatures
SBR (at the producer /within the range of Work) cca. -50°C up to +100°C
EPDM cca. -50°C up to +150°C
NBR (can be ordered separately) cca. -30°C up to +100°C

SBR  Improved abrasion resistance and age resistance, good resistance against operating liquids
EPDM Excellent fastness to abrasion, ageing and fastness to most of operating liquids
NBR Versatile material. Sealing for contact with mineral oil or fuels. Poor resistance against ozone and weather resistance.

Our KG-System (PVC)® products are manufactured in classes SN 4 and SN 8, KG 2000 . Polypropylene® products are manufactured in the class SN 8 and MAGNACOR in the class SN8.

The sealing of systems BL, DD and Euro L Spezial are resistant against water with maximal volume of chlorine 0,6 mg/l.

„Placement in the area of ground water is possible only if it is ensured that the embankment material is not dislocated and shifted (e.g. embedding the fine gravel in concrete to the filtration layer)".

„During works in the area of ground water it is necessary to ensure that the bearing/supporting layer of placement does not contain water during the construction work implementation"

„The zone of pipework must be protected against each predictable change of bearing capacity, stability or the bed when such change can be a result of the ground water action for example".

Be so kind and contact us if you have doubts about suitability of the sewage piping placement. In such case we will carry out an analysis of structure.

We have the “leak tightness at external over-pressure” test record of the manufacturer of sealing rings at our disposal. The manufacturer is the firm M.O.L. and the test record is dated 14th July 2004). The test was conducted against the external pressure action in the height of 0,5 bar (5m of water column).

No, it cannot. 
Among other things, this provision serves for elimination of the backwater formation and formation of retained amount inside the system.

No, it is not. It is not allowed to take the piping of the rain water and sewage water inside the building together. The piping can be directed into the joint piping only outside the buildings (near the connecting channel on the boundary of the property).

The exception will become valid if the border development is concerned. In such case it is permissible that the rain water piping and sewage water piping is drained together inside the building.

The pipes with slide-in sleeves / couplings are usually placed in such manner that the sharp end is in direction of flowing. The sharp end is sliding into the sleeve / coupling.

The quote from Manual of plastic pipes (4th issue, paragraph 3.4.4 Construction of the sewage water channels and piping, page 463)

Thus the piping placement in direction of flowing is clearly defined.

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