PVC – three-layer pipes for home sewage systems
Household sewage pipes are made from unsoftened polyvinylchloride (PVC-U) and are intended for disposal of sewage water. The VC-U quality has been set in accordance with the standard DIN 19531, SRPS-EN 1401.
The pipes and jointing elements made of PVC are resistant to corrosion and chemical damage caused by acids, alkalis, sulphates, alcohols, salt compounds and a number of other chemicals. The pipes are also a very good electrical insulator and can be permanently applied if installed in conditions securing a temperature range between 0ºC and 60 ºC. The standard working life of the pipes is over 50 years. They are not suitable for waste waters with a high content of petrol, acetone and benzene. The connections are made using a socket fitting and a rubber ring, securing full tightness of joints. Ideal for pipelines installed underground or on the ground surface, laid on free flat surfaces, for the disposal of waste water and rainfall. They are also utilised for industrial purposes, for the disposal of industrial waste waters that have no negative impact on PVC; equally suitable for free (gravitational) flow systems, as well as for low-pressure systems. Pipes for domestic sewage systems are produced with the socket fitting (collar). The useful length of the pipe with the socket fitting is its length without the length of the collar depth.
PVC KK pipes are light-grey in colour (RAL 7011) and bear the following markings:
- * Code of standard: SRPS-EN 1401
- * Outer diameter,
- * Type of material,
- * Manufacturer’s sign and year of production.
The outer diameter of the pipes ranges between DN 50 and DN 160 mm, and they are supplied in lengths of between 250 mm and 5000 mm.