Fittings for metal-plastic pipes: characteristics and types, sizes and fittings, metapol and components

fittings for plastic pipes may vary in size and quality Composition pipe is an aluminum product, the outer and inner layer of plastic which is isolated. The polymer protects the exterior from harmful chemical influences, and the internal one from scale and corrosion. Fittings for metal-plastic pipes are the necessary connecting fittings, without which the installation of a pipeline is impossible.

Advantages of metal pipes

tubes made of a material such as metal and plastic, nesmotSeveral protective layers differ in their thickness and ductility. In this case, the wall dimensions do not exceed 2 mm.

There are two types of pipes:

• They differ in diameter and thickness;
• There are from domestic and foreign manufacturers.

Among the advantages of metal pipes it is worth noting a long service life and low price

Benefits products are obvious:

• highly resistant to corrosion and clogged;
• Maximum sound insulation;
• Lightness and flexibility;
• Good throughput;
• Long service life - up to 50 years;
• High resistance to any aggressive influences;
• Unlike copper and steel pipes, metal-plastic products have minimal thermal conductivity;
• The products are easily mounted, without the use of welding for connection;
• The reinforcement of metal-plastic pipes looks good and does not require additional staining.

Among the disadvantages, it can be noted that such types of heating pipes do not tolerate frequent temperature changes and multiple deflections in one place.

Heating metal-plastic pipes:

characteristics

Metal-plastic pipe has its own characteristics and a certain structure.

Its structure is quite simple:

• main material, which is used for products - aluminum, it gives the structure the necessary rigidity;
• The inner layer is coated with a polymer coating, protecting the metal from scale and rust;
• The outer part is treated with a polymer to protect against any reactive substances and the effects of alkalis and acids;
• There is a layer of special glue between the aluminum and the covering polymeric shells.

Metal-plastic pipes are excellent for building a heating system in the house

There are also pipes made of a material such as metapol - they include up to 5 protective layers. Such a product is durable and withstands not only high temperatures, but also high pressure.

Standard dimensions of metal-plastic pipes

If we consider the use of metal-plastic pipes in everyday life, we can note their use not only in heating. They are in demand in signal, safety, fire-prevention water supply systems.

Specifications and common sizes:

• considered most screwed pipe diameter of 16 to 29 mm;
• The thickness of the material wall is from 2 to 2.5 mm;
• The construction meter weighs about 170 and has a capacity of 0.201 liters;
• The smallest bend radius of the metal-plastic by hand or with the help of a pipe bender - 80 and 45 mm.

The GOST regulates not only the dimensions, but also the service life and the conditions for using the product, there is a special table where the design parameters are specified.

The choice of the size of the plastic pipes should be based on the tasks that they will perform.

Each product must be marked with a mandatory list of information about its characteristics.

The list includes the name of the manufacturer, specifications for operation, dimensions and other data.

Assignment and types of fittings for plastic pipes

With the help of connecting parts, ie fittings, the pipes can be quickly installed and disassembled. The whole process takes no more than a minute. The only thing that is needed for work, fittings, pipes of suitable size and special spanner keys.

By its designation the connection elements are divided into:

• Tees( crossings);
• Couplings connecting pipes;
• Fittings for bezestkovochnoy stroke;
• Gates, valves and taps.

For metal plastic products, parts that differ in the assembly method are used:

• Collet elements( threaded);
• Compression( split);
• Press fittings.

Collet types of fittings require assembly and removal if necessary. These are detachable parts that ensure complete tightness of the joints.

For detaching or connecting fittings, use the

swing keys. In turn, they include the following parts:

• Base made of brass with special coating;
• Seal in the form of a rubber gasket;
• Crimp ring.

When installing the fasteners, it is important not to break the thread, so tighten the nuts tightly, but do not overtighten.

Compression conditional-detachable fastenings are suitable for mounting any type of pipes from metal-plastics.

The kit includes:

• Fitting;
• Spare nut;Crimp ring( cut).
• .

Compression fittings can be used 2 times, although the quality of the re-fastening may not be so reliable. Press fittings are only applied 1 time, they can be mounted with a press jaw or press machine.

Fasteners can be different:

• Tees;
• Couplings for connection;
• Corners.

The installation of these elements is fast and durable.

How to choose fittings for

metal parts To select the accessories for connecting pipes, you need to create a water circuit to understand what hardware is needed. It is advisable to purchase a tee, adapter and collets - O-rings, from one manufacturer.

When choosing a fitting for a plastic pipe, you need to consider its diameter

Some things should be considered:

• Each brand can differ in size standards, if you select inappropriate fasteners, it will not be possible to make the connection sealed;
• All the characteristics of the plastic pipe are indicated in the marking, these data should be oriented;
• Before buying, you should familiarize yourself with the quality certificate and other related documents;
• Based on customer feedback, expensive branded hardware does not have much superiority over the details of other manufacturers.

Today domestic manufacturers represent a wide range of components for mounting metal-plastic pipes, which are distinguished by high quality of execution.

To precisely match the dimensions of the connections, you can use the special catalogs that are available in any specialized store.

What are fittings for plastic pipes( video)

By carefully reading the attached documentation, you can avoid fakes, poor quality and purchase products at affordable prices without overpaying for the brand.