Basic requirements for plastic water pipes

Mounting with permanent connections

quality pipe products identified by the following parameters:

1. surface of the pipe, both internal and external must be perfectly smooth.
2. permissible slight longitudinal waviness within the rules.
3. outer, inner and end surface should not have cracks, foreign inclusions.
4. Tap HDPE pipe is always available in black color with three longitudinal blue stripes, which are evenly distributed around the circumference.

Water polyethylene pipes are divided according to the following parameters:

• brand products - PE 80 and PE 100;
• resistance to internal pressure - SDR;
• diameter.

Brand PE 80 is used for water supply and sewerage.Water pipes intended for the transportation of drinking water to be produced from food polyethylene properly labeled.Technical pipes can be manufactured from recycled materials.Brand PE 100 is most often used for the installation of water mains, according to which it is supposed to lead cold water.

As for the SDR index, then the lower the number, the greater the pressure pipe can endure as index decreases with increasing thickness of the pipe walls.In

if the pipe to be used at high pressures, it is necessary to make permanent connections IPA pipes.This type of connection is the butt with a special welding machine and electrofusion.Welding - it is a complex process that requires special equipment and some skill.Welding quality is considered if the seam is only one, which has the same strength with integral pipe.This type of welding is preferred also because it is not necessary to use other parts, as well as butt welding to interconnect directly and fittings together.

electrofusion connection is made using elektrofuzionnoy clutch, which is a molded plastic part with embedded electric heaters.This compound is useful if the pipe will not experience pressure exceeding 16atm.Electrofusion connection is more time-consuming and economically costly than the butt.It is used in exceptional cases.if you can not use bulky welding equipment and small-diameter pipes.

releasable connection to install HDPE pipes

The most common way to connect HDPE pipe - flange.For him, use the sleeve under the flanges that are welded to the ends of the pipe, and flare metal flanges.PE water pipe with a diameter of 50 mm may be joined with compression fittings.This compound is useful if other methods are unavailable or uneconomical.Method of using compression fittings are used not only for jointing of pipes made of polyethylene, but also for jointing pipes of dissimilar materials, such as worn can be replaced by a steel pipe portion.Collet Connection withstand pressure up to 25 atm.

With the right approach to the installation of water and the right strategy connecting PE pipes, water supply will last a long time without repair work without losing their operational properties.