Fittings for HDPE pipes (HDPE - low pressure polyethylene) are an indispensable part that ensures the continuity and throughput of the pipeline. They are needed where it is necessary to connect pipes of different diameters or materials, in places where they turn or branch, as well as when carrying out repair work on polyethylene pipelines.
Fittings for HDPE pipes are made from the same material as the pipes. It has a number of advantages over others: it is resistant to chemicals and deformations, temperature extremes; does not rust or oxidize; does not decompose and serves more than 50 years; is lightweight and environmentally friendly.
The main types of fittings for the installation of polyethylene pipes:
- cast;
- welded;
- electrowelded;
- compression.
Fittings for HDPE pipes cast (SPIGOT)
Produced under pressure by casting, subjecting them to further machining. They are used in all types of connections. Cast fittings are resistant to chemical aggressive environments, do not oxidize and do not change the diameter. Savethroughput by eliminating deposits inside the pipeline walls.
Fittings for HDPE pipes welded (segmental)
Designed to connect pipe segments at their bends and branches; at the joints of pipes of different diameters or with fittings. The connection is made by butt and electrofusion welding.
Electric welded HDPE pipe fittings
Produced under pressure by casting and have an electric spiral inside, which, when heated, is hermetically connected to the pipe. Fittings of this type have a bar code that indicates the required tension and the time required for a stable seal.
They are used in the repair of pipelines located in the ground, in walls and ceilings. The connection takes place using a special welding machine, which allows you to set the necessary parameters for heating.
Compression fittings for HDPE pipes
A very convenient type of fittings, as they are produced ready for use. The pipe does not need preliminary preparation, and sealing occurs without a welding machine and other devices, a sufficient metal or plastic compression key. With standard male and female threads, these fittings are suitable for connecting pipes of different materials.
Assembly and disassembly of a compression fitting can be done up to ten times, while it does not lose its quality, and in the caserepair, it is enough to replace the internal components with a key.
Absolutely does not corrode, as it does not contain metal elements. Suitable for transporting food liquids and drinking water as all parts are made of hygienic materials.
All fittings for HDPE pipes are available in the form of tees, elbows, internal and external threads, etc., and the connection principle is similar to the installation of metal-plastic pipes. Sometimes it is recommended to use sealant at the junction of the fitting and sealant.
