Polypropylene pipes for water supply: all data on these

In recent years, polypropylene pipes for water supply and heating are becoming increasingly popular.

This is explained by the following:

• low cost of production;
• systems of them are reliable and easy to install;
• the service life of polypropylene pipes for water supply is up to 50 years;
• they do not rust and are not overgrown with sediments;
• their appearance is neat;
• universality of products: they can be used for hot and cold water supply, as well as heating systems.

Product Classification

PP pipes belong to thermoplastics and, based on the modification of the material, are divided into 3 types.

1. Products from homo-polymer according to international classification are marked with PP / H. Russian standards define them as PP / G or PP-1.
2. Analogues of the block copolymer - PP / B (PP / B or PP-2).
3. Products from random copolymer - PP / R (PP / R or PP-3).

According to GOST R No. 52134/2003, which normalizes the use of pipes from thermoplastic materials, all these 3 types of products can be used for arranging heating and water supply systems.

Purpose of products

Based on their purpose, such categories of PP pipes are manufactured.

By design, polypropylene pipes can be solid or reinforced with aluminum foil or fiberglass.

Characteristics of pipes

1. Solid PP pipes are used only in centralized networks of hot and cold water supply, as well as in autonomous systems for transporting water from its sources..
   

1. Reinforced counterparts can be used in all engineering communications, including in radiator heating.
2. Reinforced pipes have low thermal elongation.. For analogs with fiberglass, it is 2 times less, and with aluminum - 4 times less than that of solid polypropylene products.
3. The metal layer puts a reliable barrier to the harmful diffusion penetration of oxygen through the tube walls into the water or heat carrier.

Note! These characteristics are important especially for the closed type of heating, which has a long pipeline. If the volume of oxygen in it reaches a critical value, this situation is harmful to the equipment.

1. Marking of polypropylene pipes for water supply and heating systems should indicate, including the internal stress that they withstand, in MPa.
2. For example, PP / R-65. Here the figure means that the product withstands a voltage of 6.5 MPa (at an internal temperature of +20?), About 50 years.
3. This characteristic is called "long lasting minimum pipe strength". It is labeled MRS (from the English. "Minimum Required Strength"). The higher this value, the stronger the product.

Below are the categories of PP pipes and the pressure they withstand.

The instruction informs that the color of PP products depends only on the manufacturer and says nothing about their technical properties.

It may be:

• white;
• gray;
• black
• green.

How to choose the elements for the water supply system

1. The price of polypropylene pipes is relatively small, and the area of ​​use is universal. They are suitable for arrangement of floor and radiator heating systems, networks of cold and hot water supply.
2. These products can be mated with pipes from other materials: copper, steel, cast iron.
3. Long service life, reliability and high strength make it possible to create with the help of these products both closed and open engineering systems.

To correctly select the pipe from the PP, you should consider the following.

1. They must with a margin comply with the design characteristics of the water supply or heating system.
2. To build the pipeline with your own hands was of the highest quality, try to get all the components of the system from the same manufacturer.

When buying pipes, inspect them and evaluate the quality of the products:

• the degree of smoothness inside and outside;
• products should not have chips, cracks, a bubbly surface or its inhomogeneous structure, extraneous inclusions;
• the outer and inner diameter of the product must have the correct geometric shape;
• the walls of the elements must have the same thickness.

The same goes for pipe fittings.

1. Pp pipes are able to withstand negative temperatures, without devastating consequences, not more than -20 ?. Ask the seller how the products were stored in the winter. If storage conditions were inappropriate, refrain from purchasing.
2. If you plan to install a system for drinking water, ask the seller to show you the certificate of pipes for their compliance with all sanitary and hygienic standards.

Note! So that there are no additional difficulties during assembly work, select only direct products. Often they are stored on the bases and in the shops vertically. This leads to pipe bending, often significant.

1. Purchase products only from reputable manufacturers who have a good reputation and provide a certificate of quality for their products.

The diameter of polypropylene pipes for water supply and heating can be very different. Below is a table relating to this characteristic.

It should be noted that analogs of the PN-25 brand are manufactured only with aluminum foil. This layer can be continuous or perforated. Holes in the reinforcing layer help to do without stripping the pipes when they are welded into the system.

Aluminum foil can be located closer to the outer surface or exactly in the middle in the thickness of the element walls. This does not affect the strength characteristics of the products.

Conclusion

Pipes from various types of polypropylene are modern and reliable. They have a variety of characteristics, so they can be used for all types of engineering systems. The video in this article will give you the opportunity to learn more about its topic.