Connector
A plug-in connection is a movable pipe coupling whose sealing effect by plugging together of the spigot and socket or a pipe shaft and a coupling in connection with an elastic sealing means is achieved. Pipes with this type of pipe connection are typically used in the manufacture of sewer pipes .
Plug connections on socket pipes
These pipes have a socket on one side (bell end or butt end), the outside diameter of which is larger than that of the pipe shaft, so that they can accommodate the spigot end of the adjacent pipe of the same type. The other side of a socket pipe is shaped as a spigot without socket. The sealing effect is created by the restoring force (contact pressure) of the elastomer sealing element. As a rule, in the pipe connections used today, a sealing element made of elastomeric plastic is located in the socket. In some cases there is also a sealing element at the tip end which, together with the sealing element in the socket, achieves the sealing effect.
Plug connections on muffle-free pipes
In addition, there are now sleeveless sewer pipes with smooth ends with a nominal diameter of DN 150 and up, which can also be used for the production of house connections . These pipes are connected with precisely fitting rigid coupling collars or slip-on couplings made of different materials.
Types of connectors
- Rolling ring connection This type of pipe connection was mainly used for concrete pipes . The elastomer ring, which is round in cross section, is stretched onto the spigot end of the pipe and, at the same time, it rolls into its final position while deforming when the sleeve of the adjacent pipe is pushed over. The sealing effect is brought about by the pressing force ( restoring force ) that occurs when the sealing ring is pressed together . According to a FBS quality guideline (FBS - Fachvereinigung Betonrohre und Stahlbetonrohre eV), rolling ring seals are no longer permitted due to their sensitivity to installation errors
- Mechanical seal connection In the case of mechanical seals, the sealing ring is placed in its final position under pre-expansion in a recess in the spigot end provided for this purpose. When pushed together, the sealing ring is compressed without changing its position and in this way achieves its sealing function.
- Lip seals, compression seals and compression lip seals A systematic distinction between the so-called lip seals and the so-called compression seals is possible. With lip seals, the elastomer is shaped like a lip. This lip is angled by joining a pipe joint. The insertion forces are relatively low and thus facilitate installation. The lip is mechanically stressed in bending . In the case of compression seals, on the other hand, the seal must be compressed when the pipes are joined together. In fact, the seals used in the pipe connections made today are a hybrid of what is known as "compression lip seals". When the pipe connection is joined, the lip folds over and acts like a compression seal.
literature
- Bosseler, B .; Harting, K .: "Condition assessment and leak test of house connection and underground lines, Part 1: Leak tests on house connection and underground lines - application limits, procedures, test criteria, part 2: Basics of renovation planning for house connection and underground lines", final report. IKT - Institute for Underground Infrastructure on behalf of the Ministry of the Environment NRW (MUNLV), April 2003.
- Stützel, Th .; Bosseler, B .; Bennerscheidt, C .; Schmiedener, H .: Ingrown roots in sewers and sewers. Final report. IKT - Institute for Underground Infrastructure, in cooperation with the Chair of Special Botany at the Ruhr University Bochum with the participation of various NRW network operators on behalf of the Ministry of the Environment of North Rhine-Westphalia (MUNLV), August 2004.
Web links
- FBS - Fachvereinigung Betonrohre und Stahlbetonrohre eV
- Research report of the IKT - Institute for Underground Infrastructure
Individual evidence
- ↑ http://www.ostendorf-kunststoffe.com/index.php?page=kg2000produktuebersicht
- ↑ Archived copy ( memento of the original from March 19, 2013 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice.
- ↑ http://www.fbsrohre.de/uploads/media/090313_fbs_qualitaetssicherungssystem.pdf ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
