PVC pipes, due to their light weight and many other technical characteristics, are one of the best solutions for laying systems for various purposes. Installation works are not accompanied by difficulties, but you need to know what features a PVC pipe has. Among the additional features of the described products should be highlighted:
- long term of operation;
- affordable cost;
- light weight;
- ease of installation.
Light weight allows installation without the use of special fasteners. In addition, an expensive tool is not needed, the pipeline can be laid independently, while saving your money. As one of the significant advantages, it should be noted the absence of disadvantages that are characteristic of cast-iron and metal pipes.
That is why these pipes are increasingly used in many areas of human activity, displacing products from other materials. After all, they are more durable, do not provide for complex and expensive maintenance, and they can be laid with minimal cost.
Specifications
Polyvinyl chloride pipes have outstanding performance features. They are characterized by high ring stiffness, due to which the products are able to undergo an internal pressure of up to 120 atmospheres. Pipes are extremely resistant to temperature deformations. When heated, the pipe lengthens only by 5% of the original volume. As for frost resistance, PVC is not so resistant to such influences. Therefore, the laying of pipelines made of this material must be accompanied by thermal insulation.
The pipe must not cool below -15 ° C. PVC pipes are not as good in heat resistance. The material begins to lose its rigidity when exposed to temperatures above 78 ° C. External and internal surfaces have a minimum roughness, this prevents the siltation of the pipeline. Structural material can be quite impressive in light transmission. You can meet a transparent PVC pipe on sale, but in most cases the products are supplied in colored form. But even in this state, polyvinyl chloride is able to resist the effects of ultraviolet radiation better in comparison with other varieties of plastic.
Water during transportation through PVC pipes does not change its properties. This indicates that this type of communication can be used to pump not only technical, but also drinking water. Among the main advantages of such pipes, one can distinguish inertness to the transported medium and high ring stiffness, which allows laying high pressure pipelines.
As for hot water systems, polyvinyl chloride cannot be used in them, since the temperature limit of operation of the pipeline is only 40 ° C. While non-pressure systems require other advantages from pipes, among them should be highlighted the minimum wall thickness and high smoothness of the inner surface. As for the thickness, it can vary from 1.5 to 6 mm. These properties make it possible to lay an impressive sewer system. As a result, it is possible to obtain systems with a small cross-section of the pipeline, which are able to divert a significant amount of effluent.
Some characteristics of pressure-free polyvinyl chloride pipes
Non-pressure PVC pipes can be laid and interconnected using o-rings. This installation method is acceptable for external and internal systems. Pressureless pipes have a thickened socket at one end, the diameter of which can vary from 63 to 315 mm. Such pipelines can be operated at a maximum operating pressure of 0.63 MPa. However, the pipe itself is capable of undergoing up to 20 MPa.
Characteristics of PVC pressure pipes
PVC polyvinyl chloride pipes can also be pressure pipes. They have the ability to undergo impressive pressure, so cool products are used to assemble pipelines. They are like a bell, but at their end there is a special thickening in the form of a bell.
The diameter of the pressure type PVC pipe can vary from 10 to 90 mm. In accordance with GOST, 11 original sizes can be counted. The maximum working pressure is 2 MPa. If this value is exceeded, then the adhesive joint will not cope with the load. On sale you can also find a pipe without a bell, it is used when assembling the system of the following types of fittings:
The diameter of smooth pipes varies from 10 to 315 mm. Such products can be used not only in pressure, but also pressure-free systems.
Corrugated PVC pipes: properties
Corrugated polyvinyl chloride pipe has the ability to self-extinguish, this is a priority, which is one of the most important when laying electrical wiring. The pipe does not burn, but melts and smolders, completely extinguishes and stops the fire. Such pipes are durable, they have a crack-resistant, water-repellent surface that does not corrode, does not lose its properties and does not dry out over the entire life cycle.
Corrugated polyvinylchloride electrotechnical pipes are thermoplastic. They respond to temperature changes minimally. The temperature regime of operation can vary from -20 to +80 ° C. As for the installation, it must be done at a temperature of from -5 to +60 ° C. Among other things, polyvinyl chloride acts as a dielectric, which indicates its insulating ability.
Mounting Features
The pressure pipe starts from the source and ends with a tap. The pressure-free pipeline at the beginning has a PVC-type siphon, while at the end there is a septic tank buried in the ground. To connect a septic tank and a siphon, it is necessary to equip a winding line into which fittings and pipes will enter. The installation process can be conducted using one of three technologies. The first involves the use of a bell, the second - cold welding, while the third - threaded fittings.
Features of the installation of PVC sewer pipes
Sewer PVC pipe is laid according to a certain technology. At the first stage, the elements must be adjusted to each other and check whether the slopes and angles correspond. Next, markup is carried out so as not to get confused in a large number of components. The elements are interconnected, it is important at this stage to check that the pipe enters the bell by 2/3 without effort.
For tightness, the joints are glued with a special composition. In order to increase adhesion, the interface should be roughened. Once the glue has been applied, a fitting can be worn. After completing installation work, you need to check the system for leaks. If a leak is not detected, then installation work was carried out successfully.
Socket assembly
Polyvinyl chloride pipes (GOST 51613-2000) can be collected in a bell. Tee fittings are required for a T-piece from one branch to another. A sealing ring should be placed in the bell and the smooth end of the pipe should be installed in the sealing bell. The ring will hold the smooth part and seal the joint.
Cold Welding Assembly
Installation with cold welding can be practiced when laying the pipeline, when it is necessary to ensure angular conjugation or insert. If in the latter case, a reinforced pipe is used , then in the former it is possible to dispense with adhesive fittings and smooth pipes.
The assembly using glue is as follows. At the first stage, it is necessary to trim the end and calibrate, that is, to grind and remove the burrs. The master should check the immersion depth of the smooth end with subsequent marking.
After that, the outer surface of the smooth end is treated with a solvent, and the junction is cleaned. With the inner surface of the fitting and the bell, it is necessary to carry out a similar action. As soon as cleaning is completed, a special glue must be applied to the surface of the fitting and pipe, which should cover the inner surface and the marked area. At the final stage, the pipe must be pressed into the socket or fitting to the depth marker, and then rotated around the axis, this will allow the adhesive to be distributed evenly.
Conclusion
If you decide to purchase a PVC pipe, the price of this product should interest you. For example, a corrugated pipe for wiring can be purchased for 10.67 rubles. per meter. In this case, we are talking about a product whose diameter is 25 mm. Corrugated PVC pipe fire-resistant cable line will cost the consumer 16.73 rubles. per meter. But you get an easy rigid pipe for electrical wiring for 17.15 rubles. per meter.
Fire-resistant cable line, which is characterized by low weight and rigidity, will cost 26.89 rubles. per meter. Its diameter is 25 mm. Fire resistance complies with classes E60-E90. You can buy a pipe for laying electrical wiring in the package - bay (25 m). The product has a probe, and the pipe diameter is 25 mm. You can buy a PVC pipe of this type for 333.38 rubles. for packing.
Customer reviews suggest that the advantages of polyvinyl chloride pipes are much greater than the disadvantages. They are perfect for heating, sewage, etc. Consumers who purchased PVC pipes did not regret their choice.