Fittings for plastic pipes and their types

Fittings are an integral part of any plumbing. With their help, the system turns, branches, transitions from one diameter of pipes to another. The plastic pipeline does not do without them, so in this article we will look at what fittings for plastic pipes exist and for what purposes they are used.

General information

First of all it should be said that the fittings of plastic pipes, like the pipes themselves, can be made of different materials:

• Polyvinyl chloride;
• Metal plastics;
• Polypropylene
• Polyethylene, etc.

When selecting parts, you should pay attention to the fact that they were made of the same material as the entire highway. True, I must say that depending on the material, the price of similar products may vary.

The use of fittings allows not only to quickly install any sections of the pipeline, but also to make high-quality joints, even in the most complex and extensive sections of the pipeline.

Depending on the type of material from which the parts are made, the connection of plastic pipes with fittings can be made in several ways:

Types of parts

American

American - is a in-place design, designed to connect plumbing fixtures to the water supply. Tightness is ensured by a specialized cone with a rubber or silicone seal ring.

The main advantage of this design is that each part of the part is separately fixed on the elements to be joined, after which they are tightened with the help of a nut, which ensures a tight and reliable joint.

There are two types of similar parts:

• Corner
• Straight lines

With the help of a corner American, you can make the corner joint of highways without tension or tension of materials. It should also be noted that the products are with internal and external threads. This allows installation without the use of additional adapters.

Shut-off and control valves

This type of product includes taps and valves.

There are two main types of valves and fittings:

• Manual valve;
• Thermostatic valve.

In addition, the details differ in the type of housing, which can be:

• Polymer, designed for soldering into the system.
• Metal, with a threaded connection. In this case, on the one hand the valve can be located American, which allows you to dismantle it, without dismantling the design.

The main characteristic of cranes is the degree of tightness, which determines the area of ​​their application.

Depending on tightness, these types of fittings for plastic pipes can be used in the following systems:

• Gas supply;
• Hot water or heat supply;
• Cold water supply.

Note! Valves designed for cold water supply should not be used for hot water and, especially, gas supply systems.

Tees and crosses

Tees and crosses are connecting elements that play a primary role in the formation of the pipeline, as they allow branching and merging of several routes. Central taps of crosses and tees can be performed at a right angle, or at an angle of 30 or 40 degrees.

Plastic pipes and fittings of this type can be connected by soldering or threading. In addition, there are transitional modifications that allow transitions from one type of connection to another.

It should also be noted that tees and crosses can be:

• Equal - the apertures of the housing and the neck have the same diameter;
• Transitional - openings and a mouth have different diameters.

Note! You should not try to use the connecting parts for other than their intended purpose or to modernize them with your own hands, as this can lead to the emergence of an internal strong backwater and deformation of the main or its depressurization.

Couplings

Couplings are designed to provide a quality connection of the same diameter trunk elements, which may be required on long spans or if it is not possible to use the whole part.

There are four types of couplings:

• Fitting for soldering plastic pipes of the same material;
• For mounting elements made of different materials (on the one hand, the solder connection was made, and on the other hand, it was threaded).
• Couplings for transition from rigid sites to corrugated (used in sewer systems).
• To connect elements of different diameters (transitions).

Swivel joints

These products are the most popular types of fasteners, as they allow to perform turns, without which no system is inconceivable. Like the other products described above, the corner joints can be made both for threads and for soldering.

The angle of rotation of the aisles can be different, however, the most popular connections with a right angle.

Contours and supports

The contours include connecting elements, which make it possible to simplify installation of the system at the intersection of tracks or the occurrence of structural obstacles that prevent further construction of the line.

Support - the products intended for rigid fastening of the pipeline. As a rule, their use requires installation instructions for heating or hot water, which is associated with increased plasticity of polymeric materials under the influence of high temperature. The supports allow you to securely fasten the structure at certain points.

Here, perhaps, are all the main connecting elements, which are most often used for the installation of such pipelines.

Conclusion

Without fittings, installation of the pipeline is not possible. Therefore, when calculating pipes for a system device, it is necessary to immediately determine the connecting elements, namely, their type and quantity. This will allow the construction to be carried out quickly and efficiently (see also the article Fitting for PVC pipes: an economical option for mounting communications).

From the video in this article, you can get more information on this topic.