Instruction: soldering polypropylene pipes with your own hands. Soldering polypropylene pipes: errors, recommendations

Polypropylene (PP) pipes are firmly included in the everyday life of every home. Their versatility makes it possible to lay out water supply systems not only in houses, apartments, but also in suburban areas.

The use of such elements for a heating system is also one of the most popular areas. In order for the work to be performed efficiently, the rules and secrets of soldering polypropylene pipes should be studied. And it’s worth starting with a study of the characteristics and characteristics of the material.

Types of PP products

There are several options. You can distinguish them by marking along the length of the product:

1. PN-10. It is used for systems with a low pressure not exceeding 1 MPa and a temperature not exceeding 45 ° C. As an option, the device is a water heated floor.
2. PN-16. The pressure in such a system should not be higher than 1.6 MPa, and the temperature should not exceed 65 ° C. Used for supplying cold water.
3. PN-20. One of the most popular types. Used for hot and cold water. The pressure in such a system can be up to 2 MPa, the temperature is allowed up to 80 ° C.
4. PN-25. It is used in heating systems. System pressure up to 2.5 MPa, temperature up to 95 ° .

For private use, pipes with a diameter of 16 to 110 mm are used.

The color of the product does not affect individual characteristics. The most common products are white. The exception is black pipes. They have extra UV protection.

Is it difficult to solder polypropylene pipes with your own hands? The operating instructions must be followed exactly, but otherwise the process is not complicated. For pipes, there is a whole list of fittings, which should also be studied.

Advantages and disadvantages of PP products

Such systems have a decent list of advantages:

1. Durability of the material. Service life up to 50 years. This is achieved due to the absence of corrosion processes.
2. Environmental friendliness. Quality material is a guarantee of safety for human health.
3. The ability to hide in the box under the tile. This is achieved due to the durability and tightness of the system.
4. Aesthetics. Even in open space, the pipes look neat.
5. Almost no plaque forms inside the system. Achieved by a smooth inner surface.
6. Lightweight construction.
7. Simplicity of installation work.
8. Universality due to a large number of connecting elements.
9. Do not conduct current.
10. From such a material, the system is less noisy.
11. It is not exposed to freezing. It has a good coefficient of elasticity.

The disadvantages include the fact that low-quality material is caught.

Types of soldering

There are two types of connection - butt and socket. The connection according to the first embodiment may not withstand high pressures in the system. Therefore, the most popular and easiest way is to connect to the socket using fittings and a special welding machine. As his instruction shows, the soldering of polypropylene pipes should be carried out with the exact observance of technology.

Then the quality of the system will meet all the requirements and will be able to last up to 50 years.

Types of fittings and their features

These systems have a large list of connecting parts, which allows you to make the most efficient wiring:

1. Angular 45 ° and 90 °. With their help, you can deploy the system from 45 ° to 135 °. They can be with or without thread.
2. Adapters are double, triple, in four directions. Threaded options are also present in these embodiments.
3. Contours. When soldering systems, they allow to bypass pipe intersection points.
4. Compensators. They look like a loop. They are installed to stabilize the pressure in the system. This significantly extends the life of the pipeline. You can assemble it manually using fittings, but it’s cheaper to buy a ready-made version.
5. Cranes and valves. Locking elements used in the operation of the pipeline.
6. Stubs. During repair work, for example, in the bathroom, some of the pipes are jammed until the end of the tiling. This helps to avoid clogging before installing plumbing equipment and water leaks.
7. Fasteners. Allow fixing pipes to surfaces.

Selection of pipes and fittings for them

First of all, you should draw the connection diagram for the correct calculation of the material.

Next, the connection characteristics are analyzed. As mentioned earlier, the PN 20 models can be used to connect hot and cold water, PN 25 - for the heating system. Pipes are usually sold in lengths of 2 to 4 m, or in bays.

The instruction for soldering polypropylene pipes indicates that the fittings are selected taking into account the required parameters and must coincide with the outer diameter of the pipes.

Tool for work

The following list will be required:

• welding machine for polypropylene pipes with nozzles;
• roulette;
• marker;
• special cutter;
• stand for equipment;
• carrying or extension cord;
• protective gloves;
• instruction.

Soldering of polypropylene pipes should occur after familiarization with the technical documentation for the equipment.

Welding machine for PP products

As a rule, such equipment is sold in a separate suitcase. The kit includes:

1. Cutter for PP material. Sometimes you have to buy this tool separately, because the kit may contain low-quality ones.
2. Nozzles for different pipe diameters.
3. The welding machine itself.
4. Keys for installing nozzles.
5. Instruction The soldering of polypropylene pipes, as well as the maintenance of the equipment, must take place according to this technical documentation.

Instruction - preparation for work

For welding the system, the ambient temperature must be at least five degrees.

If this outdoor work is not allowed to solder in wet weather.

Position pipes and fittings so that they do not interfere with the work, but at the same time must be in easy and quick clearance. Pull the cutter out next to the material.

Remove the welding machine from the packaging. Select the required nozzles. One should be a mandrel, the second sleeve. The first is used to warm the inside of the fitting, the second to the outside of the pipe. Install on equipment and secure. Put the device on a stand. Connect to the network, set the required temperature mode (usually set to 260 ° C), turn it on. Make sure that the welding surface does not come into contact with anything.

As the instruction indicates, the soldering of polypropylene pipes should be carried out only after the apparatus is completely heated. For this, buttons with a backlight are made on the equipment and when fully warmed up, the indicator goes out.

Instructions and tips for soldering polypropylene pipes

Soldering pipes has several stages that allow you to achieve the perfect result:

1. Cut the pipe to the desired length. The cut is smooth, not slanted. For this, a cutter is used. It should be sharp, the blades should not hang out.
2. Strip the edges of burrs and plastic chips. Degrease the surface. If there is water inside - wipe with a cloth. In any case, both the fitting and the pipe at the cut must be clean and dry. If a part reinforced with foil will be used, the top layer should be removed. Otherwise, it will be impossible to solder.
3. Try on items. Mark the pipe for a smooth connection to the fitting. In principle, this is an optional procedure. Depends on the experience of the welder.
4. When the soldering of polypropylene pipes occurs, the instructions should already be studied, including the section on safety during work.

The welding process will be more convenient to do together, but you can do it alone.

To do this, the welding machine is removed from the stand and the handle is pressed against the floor with the foot. A pipe and fitting are put on both sides at the same time - each on its own nozzle. The movements should be with pressure, twisting clearly parallel to the ground. Alternately a half-turn is made on and off by each hand at the same time.

Having dressed all the way, it is worth waiting for time according to the instructions. It will definitely contain a table with accurate data. At the same time, remove both elements and insert into each other with a screwing-in motion, wait again for the time according to the instructions. At the junction should form an influx. It will provide a tight connection.

There are very complex transitions and connections. These are best soldered in parts.

Several separate structures are assembled and connected on site. With such sites, you will probably need the help of another person.

As you can see, the process is simple - soldering polypropylene pipes. Instructions on how to solder should be at hand. It will give complete information on the time of heating the pipe and soldering.

note

Safety precautions should be followed during operation. Avoid contact with hot elements during welding. After work, disconnect and allow the equipment to cool before removing it.

The main mistakes when welding, soldering polypropylene pipes

And now the system is ready. Pressure testing is done, and in the joints flow. It seems that everything was done according to technology, but such a nuisance came out. What could be the problems:

1. The pipes were not warm enough. As a result, the seam turned out to be leaky.
2. Weak docking. When connecting the pipe and fitting did not take place tight docking. Work must be carried out with pressure and inserted fully.
3. Not deburred edges. As a result, a gap may form.
4. The fitting or end of the pipe was wet. Water will not give a full fit.
5. Pipe and fitting from different manufacturers. Loose soldering may also occur due to differences in chemical constituents.

And the opposite effect may turn out - water does not go through pipes.

This may occur due to overheating of system elements. And inside, in the place of soldering, a commissure was formed, which does not allow water to pass through. Therefore, it is said that the technology of work must be fully observed when the soldering of polypropylene pipes occurs. Each welding machine has its own manual and it must be studied before starting work.