Even some 30 years ago, nobody would have even thought about the fact that the steel pipe may be superseded by any other material. Now it has become the norm plastic, which predict a few hundred years of use due to the unprecedented durability, ease of installation and practicality. One can cite many examples of the use of plastic pipes. However, steel and copper in some instances analogs are indispensable.

Plastic nevertheless, for most of our usual and conventional use, for example, to transport water is more preferable.

ADVANTAGES AND DISADVANTAGES OF THE USE OF PLASTIC WATER SUPPLY SYSTEMS

Plastic pipes for running water are considered a full-fledged polymer product, which is formed in the injection molding machines.

several advantages can be identified for these tubes:

extremely high shelf life and service life, which can be up to 50 years, although experts say that the pipes can survive in the ground and 200 years. Empirically it is to check that it was not possible for obvious reasons.
Resistance to corrosion, which simply is not in effect. The polymers do not interact with the water and salts dissolved in it.
Low heat conductivity allows the transportation of hot water for heating purposes over short distances without insulation. In addition, burns on contact with the tube impossible.
Installation of the pipeline is carried out as soon as possible by a small number of people.
Plastic can be used in communication systems of any type – as in the closed and open.

Among the advantages of plastic pipe can not describe for water, because they have a list of obvious drawbacks:
Quite a number of ways of mounting the aqueduct, which sometimes creates difficulties in conjunction several of its sites.
The temperature of transferred material is strictly limited, can not be given to these pipes cool the boiling water or pressurized steam.
Culvert plastic pipes on regulations can not be used in fire suppression systems.

Culvert plastic pipes – species

Currently on the market a fairly wide range of pipes of different polymeric materials, but to transfer the water, especially drinking water, there are the following varieties of tubes.

PET tube, also known polyethylene tubes in international certification referred to as “PE”. Used for all types of water supply system, as well as for the creation of sewerage systems. Polyethylene withstand much pressure to 10 atmospheres, while it is guaranteed to operate at temperatures down to -15 degrees Celsius.

These pipes are installed using special fittings or couplings which are welded a conventional arc welding. Polyethylene pipes are divided into LDPE and HDPE, which are designed for high and low pressure respectively.

Sshitye polyethylene pipes or international certification known as “PEX”. This polietilenaodin crosslinked pipes of the most common types of pipe which has the usual striped surface texture. Installation of running water from plastic pipes PEX produced by compression fittings.

These pipes are often also used for underfloor heating and de-icing systems on the roofs of private homes.

Aluminum-plastic tube, which in international nomenclature are designated PEX-AL-PEX. They began to use recently. This multilayer plastic pipes which have in its structure not only polyethylene but also the power of the aluminum layer. Gradually, these pipes have won themselves a significant market share due to the possibility to withstand boiling water, and the internal pressure of 10 atmospheres.

Pipes for plumbing PVC, or polyvinyl chloride. This is one of the first plastic pipes, so they are the most massive. Assembling a plastic water pipe PVC pipe carried out by pressing the pipe into the socket with rubber cuffs. They have proved to be excellent in the operation, in addition, they are quite cheap.

Inert polyvinyl not interact with many liquids, so it is often used even in food industry.

ASSEMBLY AND INSTALLATION OF WATER SUPPLY

Installation of water trubMontazh aqueduct of plastic pipes is very convenient, because it does not take much time and effort, and requires a minimum of equipment in order to connect the pipes. Lightweight pipes allows you to create large areas along the length without joints, respectively, the probability of leakage is much less. Certain types of fittings can also be heated, so the pipe network is obtained almost monolithic.

Plastic pipes for water supply provide the ability to create electricity, which will not lose reliability in a large number of joints.

This difference appears from the metal because the metal has a crystal instead of the polymer structure, and crystallization at different temperatures are different, so the weld seam has a different arrangement of molecules.

The plastic pipes when welding occurs completely homogeneous structure. Plastic pipe is practically not subject to thermal expansion, which creates special conditions for its mounting. And if such expansion occurs, the plastic then again takes the place without deformation.

Assembling plastic pipe is possible with your own hands without the help of experts.

There is only and always a true statement – the system must be designed so as to have the least possible number of nodes, and the nodes themselves need to try to distribute evenly.

There are a set of rules that are dictated by the experience of professional plumbers working with plastic.

Mount plastic pipes trubPlastikovye best mounted on movable elements, so that they can at a little vibration or expansion to “float”. Rigid supports can be used only for external components, such as toilet cisterns, meters, valves, etc.

Chemical inertness, as well as a large margin makes plastic pipes ideal for laying in a chemically contaminated urban soils with lots of stray eddy currents. Groundwater is also not in a position to influence the wear of the plastic pipe.

Plastic pipes when laying need to deprive all the possible exercise. Despite the flexibility, safety factor is still limited.

To pair the plastic and metal elements, there are special fittings that have brass inserts. When used as a seal fum-tape or flax fiber threaded connections, use only a small layer of winding. If possible, to tighten the threaded connections is best to use a key to a dynamometer, or skillfully tighten by hand.

When you try to bend the pipe by means of heating the building hairdryer can not exceed the temperature of 400 degrees.

The span between supports should not exceed 1 meter. In a particularly long sections, more than three meters, which run without bends, it is necessary to install the compensating ring members.

Plastic has become fairly widespread in residential apartments, so if you are still using the old water supply system, it’s time to replace it. The cost of installation and cost of spare parts themselves are not so great is that you can procrastinate.