Self-installation of metal-plastic pipes is an excellent

Metallic water pipes become a sign of archaic. Modern technologies represent a mass of analogues from cheaper, convenient and lightweight material. Durability and environmental friendliness of metal plastics in the systems of water supply and heating have earned him deserved popularity. Responsible installation of metal pipes ensures durability and flawless pipeline operation.

Metal pipes in the house - a good omen

Metal pipes have a complex structure: internal polyethylene surface, aluminum coating and external plastic, glued together. The variety of materials used gives pipes unique properties - the aluminum layer makes them plastic, and polymers successfully resist corrosion and biological fouling.

The visible advantages of these pipes include affordable cost and simple installation. They withstand water temperatures of 95 ° C, pressures up to 10 atm and keep themselves “in shape”, without sagging for decades.

Fitting fitting discord

The technology of installation of metal-plastic pipes involves the use of fittings to create a complex system of water conduit - turns, branches, docking of different diameters or connections to the metal system.

Compression (collet) fittings

Connections attract low cost, reusability and ease of installation. But they can not be used in the system of warm floors and closed in the walls. Periodic pull-up provides free access to them (hatches).

The collet fitting must have O-rings on the shank and dielectric seals.

The installation procedure involves several operations.

1. A long nut is piled on the pipe..
2. We put on crimp ring - collet. If it is tapered, the pipe is inserted into a narrower opening.
3. A shank is inserted into the pipe itself (it is better to use flax with sealant or tow).
4. The cap nut moves to the body of the part.
5. The fitting is fixed with one key, the nut is tightened with the second.
6. Tests of the finished system are carried out in accordance with the norms of SNiP 3.05.01.85 .

Note! Do not be zealous, it is better not to loosen the nut than to pull. While checking the system to leak, such a flaw is easy to fix.

Pressable compound

Differs in high reliability and a possibility of use in the closed systems. Installation takes a little time, but requires certain skills. Such installation of metal-plastic pipes is durable and does not require preventive maintenance.

Pressed pipe fittings can only be used once, so to avoid losses, there should be minimal experience with such parts. When planning the installation of metal-plastic pipes with your own with press-fittings, you should keep in mind that there are press jaws - a very expensive tool.

The assembly of press fittings is simple.

1. Check the complete set of parts - that there were seals and gasket.
2. At the end of the pipe is put on the shank.
3. To check that the tube was visible in the control windows means that she is dressed properly.
4. Opening the press jaw handle 180 °, insert the liners corresponding to the diameter of the pipe.
5. Insert the end of the pipe with the fitting fitted.
6. Close the handle of the tongs to failure. Crimping is done only once.

Note! Do not save on quality. Lightweight parts, fuzzy marking, a sleeve of thin metal can indicate a fake.

The instruction provides for testing of finished plumbing and heating systems in accordance with the norms of SNiP 3.05.01.

Option a la push

The simplest connection is based on the principle of self-locking. Exceptionally reliable technology allows you to hide the system in the wall and pour concrete. The “pushes” can be reused, they are resistant to temperature extremes and corrosion, and the installation does not require any tools and is instantaneous. Spinning is allowed.

Since push technology is still new, the price of these compounds is quite high. However, the fantastic ease and speed of installation will allow you to close your eyes to this annoying moment.

Note! The connection after assembly can not be touched for 3 hours. During this time, the seals are fully adapted to the shape of the pipe.

Tools

A variety of fittings require the same preparation of the edges of the pipe to work. The tool for the installation of metal-plastic pipes is not diverse and requires the presence of a tape measure, pipe cutter, face-picker and calibrator. A screw / spanner wrench is required for screw connections and press pliers for press fittings.

Before connecting to the pipes, standard operations are carried out:

1. Markup.
2. A pipe cutter cuts off a fragment of the pipe, taking into account the entrance to the fitting.
3. When the pipe is deformed, its alignment (calibration) is carried out.
4. The internal chamfer is removed by the chaser and the external chamfer is removed.

The remaining tools are used depending on the type of connection.

Pinning results

In ready form, any water supply system should be additionally fixed. Clips are available in different diameters and are extremely easy to install. They are fastened with screws / dowels. The optimal distance between them, which will prevent the pipe from sagging - 1 m.

Kinks are not scary

The technology of installation of metal-plastic pipes allows you to save on connecting parts by repeatedly bending the pipeline with:

• hair dryer;
• springs;
• pipe bender;
• hands

The hair dryer, heating (slightly!) The metal-plastic surface, makes it more plastic. Fold can be done in one motion. Special springs, which are inserted into the pipe, retain its shape and facilitate the process. Due to this, installation of a metal-plastic pipe with your own hands can be performed with a minimum number of fittings.

The pipe bender for bending pipes does not require special skills - it is enough to set the bending angle and, placing the desired section of pipe, close the handles.

Manual bending is carried out in several stages.

1. At the point of bending, wrap the pipe around with our palms. Thumbs serve as stops, are located along the pipe and in contact.
2. Slightly bend the pipe.
3. The palms move away from the center point and repeat the bending motion.

The manipulations are repeated until the desired radius is reached.

In conclusion

The main difficulty that many people face when installing metal-plastic pipes is the reliability and tightness of the joints. The installation methods discussed in the article will allow you to perform wiring in the apartment quickly and efficiently. The video in this article details the connection with a collet fitting.