Product range KG System ®

The sewer system from unplasticised polyvinylchloride, with ring stiffness of SN 4, manufactured as per CSN EN 1401-1 and prEN 13 476. Sewage system for collection piping under buildings, house sewage connections and mains with height coverage of up to 4 metres.

KG-System (PVC)® (DN 110 - DN 500) according to the standard ČSN EN 13476 a ČSN EN 1401-1

There is no fire load from pipes buried in the ground (KG-System (PVC) ® and KG 2000 Polypropylene®). Therefore classification of sewage pipes is not needed.

We can recommend KG 2000 Polypropylene®, or HT-System (PP) ® with sealing rings made of NBR as the case may be.

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.

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

constant short-term
60°C 60°C

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.

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

„PVC-U" means PVC without content of softeners. „U" means „un-plasticised". At this application of hard PVC the additives such as softeners are not used. In addition to high hardness and stability of size the material is also characterized by excellent chemical resistance.

„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. 
The piping is not classified according to the fire - resistance according to B1 (like HT-System (PP)®) or B2 (as Skolan dB).

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

Below surfaces loaded by transport: 1,0 m

Below the surfaces without transport: 0,8 m

Highest overlapping:


The permitted overlapping height depends on numerous factors and therefore it is necessary to carry out the analysis of structure in case of doubts. Such analysis is carried out with the help of the program prepared specially for such purposes. The technical staff of our firm will be pleased to carry out the analysis of structure for you.

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.

Yes, it can. It is allowed. The PVC can be glued because it can expand in esters, ketones, chlorinated hydrocarbons and several other solvents, or even the PVC is soluble in the above-mentioned materials.

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.

Yes, it is possible. It is possible to implement waste water draining from pumping stations (oils, lubricants, glycol, methane, propane, butane, hydrocarbons, fuel oil, etc.), with the help of both of above-mentioned systems, if NBR sealing is used.

This is not defect. The lines are determined by the production technology. They are seams of the tool separation (they can be slightly elevated and thus touchable). The lines are results of activity of both halves of the tool, or they are seams done as result of running down in which the material injected flows down into one/together (can be distinguished as a darker line).

Technical support

Contact us
  • - Ing. Vojtěch Dědic
  • - od 7:00 do 18:00
  • - +420 565 777 112
  • - +420 725 960 761
  • -