Fittings for HDPE pipes: varieties and features

Fittings for HDPE pipes (HDPE - low pressure polyethylene) are an indispensable part that ensures the continuity and throughput of the pipeline. They are necessary where you need to connect different diameters or material pipes, in the places of their turns or branches, as well as during repair work of pipelines made of polyethylene.

Fittings for HDPE pipes are made of the same material as the pipes. It has a number of advantages in relation to others: it has resistance to chemicals and deformations, temperature changes; Does not rust and does not undergo oxidation; It does not decompose and serves more than 50 years; Has a low weight and is environmentally friendly.

The main types of fittings for the installation of polyethylene pipes:

• Cast;
• Welded;
• Electric-welded;
• Compression.

Fittings for HDPE pipes cast (SPIGOT)

Produced under pressure by casting, subjecting them to further machining. They are used in all kinds of compounds. Molded fittings are resistant to chemical aggressive media, do not oxidize and do not change the diameter. Retain throughput by eliminating sediment within the walls of the pipeline.

Fittings for HDPE welded pipes (segmented)

Are intended for connection of segments of pipes in places of their turns and bifurcations; In the joints of pipes of different diameters or with reinforcement. The connection is made by butt and electrofusion welding.

Fittings for HDPE electric welded pipes

They are produced under pressure by casting and have inside an electrical spiral, which when heated, is tightly connected to the pipe. Fittings of this type have a barcode that indicates the necessary strength of the voltage and the time it will take for a stable seal.

They are used in the repair of pipelines in the ground, in walls and ceilings. The connection is made with a special welding machine, which allows you to set the necessary parameters for heating.

Compression fittings for HDPE pipes

Very convenient type of fittings, since they are produced ready for use. The pipe does not need any preliminary preparation, and the sealing takes place without a welding machine and other devices, a sufficient metal or plastic compression key. Thanks to the standard external and internal threads, these fittings are suitable for connecting pipes of different materials.

Assembly and disassembly of the compression fitting can be made up to ten times, while it does not lose its quality, and in case of need of repair, it is enough to replace the internal components with a key.

Absolutely not exposed to corrosion, since it does not contain metallic elements. Suitable for transportation of 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, knees, inner and outer thread, etc., and the principle of connection is similar to the installation of metal-plastic pipes. Sometimes it is recommended to use a sealant in the joints of the fitting and sealant.