Double-layer corrugated PP pipes and fittings: overview. Connecting corsis pipes with pipes of other systems and installing wells Transition from corrugated pipe to smooth 110
KORSIS pipes can be connected to pipes of any other type using fittings specially designed for this (Fig. 15).
Let's look at an example of the most common type of connection with PVC/PP pipes (Fig. 16).
To perform this type of connection, the following procedure is proposed:
- Inspect and clean the PVC pipe socket, coupling and free end of the KORSIS pipe.
- Insert the free end of the KORSIS pipe into the socket of the coupling, having previously treated its internal surface with silicone grease.
- Lubricate the seal in the socket with grease. Insert the bell-socket end of the coupling into the socket of the PVC pipe.
The most preferred method of transition between existing system and the new line of KORSIS pipes is the use of manholes.
Rice. 15. Transition from welded KORSIS SN8 to PE 80 SDR 13.6
An inspection well is an independent structure that is part of the sewer system. Can be polyethylene or concrete. There are two types of polyethylene wells. The first type consists of a cast base (pot) and a vertical pipe KORSIS (well heat). To connect a pipe to such a well, special rubber sealing rings are used to ensure water-tightness of the connection (Fig. 17, 19).
The first type is a structure welded from sections of KORSIS pipe. It is obvious that such wells can be maximally adapted to customer requirements. The connection of this type of manhole to the pipe is usually made using a coupling (Fig. 18). Connected pipes CORSIS co manhole made of concrete is carried out by fixing the pipe in the well using cement mortar. The design feature of KORSMS pipes - a special profile - ensures the reliability and tightness of such a connection (Fig. 20). You should pay attention to the fact that the heating agent in the well has a diameter as close as possible to the outer diameter of the pipe. All cracks that form must be filled cement mortar, which must meet the requirements for ensuring the density of the concrete connection. When installing a pipe in a concrete or reinforced concrete well wall, it is necessary to provide rigid support for the free end of the pipe by adding soil until the concrete sets completely.
The KORSIS pipe should not be concreted simultaneously with the construction of the walls of a monolithic well, as this may cause deformation of the pipe under the weight of unhardened concrete.
Fig. 16. Connection of KORSIS pipes (smooth end) with PVC/PP pipes
Rice. 17, PE well complete with standard tray
When installing a socketless section of KORSIS pipe in a concrete or reinforced concrete well, it is necessary to take into account that the length of the pipe section located on the outside of the well must be at least half the diameter of the pipe (Fig. 21).
A KORSIS coupling is put on the free end of the pipe prepared in this way, into which the next section of the pipeline is inserted.
The diameter of the pipe inserted into a concrete well should not exceed half the diameter of the well.
This technical solution has a whole series advantages:
- possibility to use on construction site remaining unmeasured pipe sections;
- the ribbed shape of the outer surface of the KORSIS pipe makes it easier to fasten and stabilize the position of the pipe in the concrete wall of the well;
- This method also makes it possible to compensate for stresses that arise as a result of possible uneven shrinkage concrete well and pipeline;
- quick and easy installation.
Pipe connectionCORSISbutt welding
One of the advantages of the KORSIS system is the ability to connect pipes by butt welding. This possibility is ensured by the sufficient thickness of the pipe wall e^ between the ribs and the width of the profile.
The same welding methods and welding equipment are used as for conventional polyethylene pressure pipes. Suppliers welding equipment Together with the equipment, they provide a table of the values of the recommended welding parameters - temperature, time and pressure. For butt verification of rough KORSIS, the values for welding pressure polyethylene pipes with small wall thickness are usually taken. Care must be taken to avoid contact of the heater with the corrugation ribs.
The standard welding cycle for a KORSIS pipe includes the following sequence of operations with certain time regulations (Table 15)
Resistance to internal pressure
Sewage pipes are considered free-flow, but at the same time, according to)