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Heat resistant, polypropylene effluent pipes, manufactured as per the CSN EN 1451-1 standard. Internal connection, effluent, ventilation and conductance piping in buildings (class "B" application) with higher thermal or chemical load, yet without requirements for reduced flammability.
HT System Plus
  • 100% recyclable
  • Noise 26dB
  • Durability to 100°C


The HT-System (PP)® effluent pipes and fittings are a top-class product with high utility properties. The designing stage of these pipes was based on the requirements of the contemporary architecture and construction industry in respect to elevated mechanic, hygienic and especially ecologic requirements. Our manufacturing conditions, dimensions and test parameters are in line with the CSN EN 1451-1 standard.


The material we use for the manufacture of effluent pipes and fittings is polypropylene (PP). This compound delivers high toughness, long-term thermal and chemical stability, all of which contribute to the extremely long service life of the piping.


The manufacturing process guarantees absolute smoothness in both the internal and external surfaces of the pipes and fittings. That, in combination with the precisely designed neck joint, contributes to the excellent hydraulic properties of the piping. The neck joint is sealed with multiple sealing elements, which guarantees not only perfect tightness, but also long-term flexibility of the joint.


The HT-System (PP)® offers a wide selection of elements, which make it a full-range system for in-house sewage; this system has been modified to fit the needs of construction in the Czech Republic. It comes with easy connectivity to all current types of sewage piping.

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Easy connection using sliding necks, sealed with an elastomer ring, unlike bonded or welded systems, facilitates the assembly, which would otherwise be difficult. At the same time, this system guarantees the immediate and absolute tightness of the joints, allowing the user to carry out the pressure test as soon as the assembly has been completed.


The technology of the manufacturing process of this product is friendly to the environment. The product is fully recyclable; in the case of thermal decomposition, no toxic pollutants are produced.

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

constant short-term
90°C 100°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.
HT-System (PP) PLUS® (DN 32 - DN 160) according to the standard ČSN EN 1451-1

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

HT-System (PP) PLUS® DIN 4102, B 2

The sealing of systems BL, DD and Euro L Spezial are resistant against water with maximal volume of chlorine 0.6 mg/l.

See the Test record of MPA Darmstadt „K 04 1525" of 1st December 2004 (the pipes DN 40 + DN 50 were tested).

Yes, it can – see Instructions for emplacement for the HT-System (PP)®. At the same time it is necessary to consider line expansion of pipes conditioned by temperature. The parts of piping must be fastened to prevent changing the length in the process of concrete placement. In order to prevent getting the concrete grout into the loop hole of the coupling it is necessary that the loop hole is sealed with the sealing tape. The pipe holes must be sealed/closed.

No, it cannot. According to the instructions for emplacement for HT-System (PP)® the HT-System (PP)® pipes and adapting pipes can be used as:

  • Sewage water piping
  • rain water downpipes
  • ventilation piping inside buildings.

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

These details can be found in the assembly instructions of HT-System (PP)® - Article 5 and assembly instructions of Skolan dB – Article 7.

At angle 15° to the axis of pipes.

The cuts must be implemented at right angle to the axis of pipes

DN 40 50 75 110 125 160
b 3,5 3,5 3,5 4,5 5,0 6,0
b – length of the edge chamfering (See also the Assembly Instructions of HT-System (PP)®)

„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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