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Rules for the use of water polypropylene pipes

Polypropylene pipes for water supply (PP) have universal technical characteristics, which allow them to be used equally successfully for cold and hot water supply systems.

With a standard operating pressure of 10 atmospheres, polypropylene water pipes withstand hot water temperatures up to 95 ° C, and also do not collapse during short-term exposure to even hotter water, up to a temperature of 140 ° C. In addition, polypropylene plumbing is not afraid of freezing, because the material is able to expand and then return to its original position.

Polypropylene pipe: technical specifications

The polypropylene pipe has excellent technical characteristics, which allow it to be used to connect cold and hot water. The main characteristics include the following parameters:

  • The maximum operating pressure in the system is 20 atmospheres, which is twice the standard value in the domestic water supply network.
  • The operating temperature is 95 °C, which allows using this type of product even for heating.
  • Low thermal conductivity.
  • Estimated service life is 100 years.

Material characteristics also include:

  1. Corrosion resistance;
  2. No rust;
  3. No decay and decay even with prolonged use;
  4. Resistance to bacteria and fungi;
  5. Light sensitivity of the outer layer;
  6. High wear resistance, which means absolute integrity even when exposed to sand and fine particles;
  7. Smoothness of the inner surface;
  8. Stable throughput throughout the entire service life.

Types and characteristics of polypropylene products for plumbing

Polypropylene pipes for water supply are classified into several types, which have distinctive technical characteristics. The main types are the following:

  • PN10 - suitable exclusively for cold water supply. It is also possible to use for air conditioning systems, transportation of compressed air and technical fluids that do not react with PP;
  • PN20, which can be selected for cold and hot water supply.

Hot water supply requires the use of a reinforced pipeline, the technical characteristics of which assume linear expansion when heated.

For the production of polypropylene pipes, GOST R 52134-2003 allows the use of three types of raw materials: homopolymer, block copolymer, random copolymer. In addition, all polypropylene products differ depending on what size they are. The pipe diameter according to GOST is 20 - 110 mm.

The most common pipeline diameter for connecting cold and hot water is 20, 25 or 32 mm.

  1. If the total length of the water supply for cold and hot water does not exceed 10 m, pipes with a diameter of 20 mm can be used.
  2. If the length of the cold and hot water supply system does not exceed 30 m, the recommended size is 25 mm.
  3. When the length of the hot water system exceeds 30 m, it is better to use a diameter of 32 mm.
  4. The diameter of the water riser must be at least 32 mm.

These GOST recommendations apply to household plumbing for cold and hot water, but if it is necessary to select industrial lines, it is better to use products of large external size. The thickness of the pipeline is selected in accordance with GOST 29325-92.

Installation of water supply from polypropylene pipes

Polypropylene plumbing is installed in specially prepared strobes in the wall. If it is necessary to connect individual elements, soldering is carried out with a construction soldering iron. The soldering iron comes with nozzles that are matched to the diameter of the pipeline. The basic rules for installing polypropylene products are as follows:

  1. Before starting installation, it is necessary to draw up an exact layout of the piping for cold and hot water. This will help to identify segments where the pipes intersect and interfere with each other.
  2. Next, the old network is dismantled.
  3. When installing at intersections, it is better to use special contours - envelope segments.
  4. Connection to plumbing fixtures is best done using adapters with a rubber connection, which are selected taking into account the outer diameter of the pipeline.
  5. The pipeline is attached to the wall with clamps.

Installation of polypropylene pipes in strobes