Polypropylene pipes come to replace steel when installing water supply systems, heat supply and sewage systems. Their advantage is in a small cost, long, about half of the years, service life and installation of installation. For docking polypropylene pipes, diffusion welding is used, which can be made by the welding machine.

Design of the welding machine for polypropylene pipes

The soldering iron for polypropylene pipes consists of:

• housing;
• temperature controller located on the middle part of the case;
• heating indicator;
• switch;
• heating surface;
• nozzles: Dorna and Gils, which dress up on a heating surface;
• handles covered with not slippery material;
• supports for which nozzles are put on.

Standard tool set

When installing the water supply, both for cold and hot water, heating systems, sewage systems are used polypropylene pipes, the diameter of which allows you to use a standard tool kit for connecting them:

• welding machine;
• heating nozzles;
• holder;
• stand;
• template for holes;
• scissors;
• roulette;
• bolts fixing nozzles;
• key hex;
• level;
• set of wrench keys.

In addition to the tool with a diffusion soldering soldering iron, fittings use:

• connective, that is, the couplings are refurbished and for pipes of the same diameter, and for pipes with different diameters;
• corners;
• adapters;
• tees.

Criteria for the choice of soldering iron for pipes

When you are going to buy a soldering iron for plastic pipes, the first guideline will be its power for you. Those who choose it in principle do not correctly come: the higher the power, the better.

What parameters depend on the power

The following parameters depend on the power:

• maximum allowable diameter of pipes that can be connected to this device;
• the time for which the welding machine is heated;
• speed, installation.

Calculation of the power you need

The formula is very simple:

• We are determined with the diameter of the pipes that are going to use;
• diameter in mm multiply by 10;
• we get the smallest required power in W.

Choosing the power calculated by the above formula, you should also consider the recommendations laid out by the manufacturer in the instructions.

Manufacturers

The soldering iron producer country for pipe welding is also an important selection criterion. It is believed that the best polypropylene soldiers produces the Czech Republic, in particular the Dytron company, specializing in welding equipment for plastics. This manufacturer is not just engaged in assembling, and all major components for responsible nodes itself and produces. The model range of high-quality, functional equipment for professional fool welding is popular: DYTRON POLYS R-4 Hand Solders:

Differs in the following characteristics:

• applied nozzles 16-75 mm;
• the temperature is regulated by a microprocessor regulator;
• temperature range - 180-280 degrees C;
• at the same time, you can work with two types of nozzles: blue and black;
• maximum temperature that cable can withstand for connecting the soldering iron to the network - 280 degrees C.

Most of the Dytron Polypropylene Solders (Ditron) have the TRACEWELD audible alarm, which controls the heating time, switching, cooling in accordance with the parameters of the welded pipes.

On blue nozzles need to be stopped separately:

• compared to black, they are more wear-resistant and their resource is twice as much;
• size range: 1.6, 2.0, 2.5, 3.2, 4.0, 5.0, 6.3, 7.5 cm.

But the hand-welding machine for pipes Polys P-1a 850W, refers to a semi-models. It has the following characteristics:

• instead of the processor installed thereon thermostat for temperature control;
• form heating element - xiphoid;
• fed on line 220;
• power - 8.5 kW;
• apply nozzles - 1,6-7,5 cm;
• temperature range - 180-280 degrees C with an accuracy of ± 7,5 degrees;
• it weighs 1.6 kg;
• it is to protect the system from overheating.

Good quality different apparatuses for welding pipes Polypropylene firms VALTEC (VALTEK). This solid manufacturer produces everything necessary for the installation of engineering systems, starting with plastic pipes and finishing tool. Companies that manufacture products under that trade mark, is in Turkey, Italy, Russia.

Soldering Valtec VTp.793 model supplied housed in a metal box, and apart from him, includes:

• stand;
• removable heaters: 0.20, 0.25, 0.32, 0.40 cm;
• 3 meter roulette;
• pipe scissors;
• keys.

Soldering has a wide adjustment range: 0 to 300 degrees C.

How to perform the welding of pipes made of polypropylene

diffusion welding

The basis for this welding process is the melting process. Parts to be joined are heated using electric power to the set temperature. A prerequisite is that they are made of materials having the same melting point. The process itself is as follows:

• Cooking pipe for welding, cutting in size as to obtain a 40 degree chamfer. Then - purified by sanding and degreasing weldable surface. If you do not degrease the joint will of poor quality;

• nozzle is attached to the welding machine screws;
• read the instructions carefully, select the mode of operation of the welding machine. Usually it is from 250 to 270 degrees C;
• when the nozzle is hot, and report on this indicator, signaled in red, put on her fitting walls which are thicker so as not to hang out;
• on the other side of the push-fit pipe nozzle, the planting tube should be the same as landing fitting;
• we note the time. The diameter of the pipe and the model of the device for welding depends on how many pipes and fittings are heated;
• at the end of the heating pipe and fitting to be removed from the nozzle;
• we try quickly until the material has cooled, but carefully combine the parts, not allowing any displacements, otherwise the seam will be poor quality;
• squeeze the parts for a few seconds while the temperature partially does not decrease, and the pipe in the fitting hole is well fixed;
• now it is necessary to protect the seam from moisture and dust.

That's all. Pipes can be laid. At the same time they should not be saved. Water on them can be used in 60 minutes.

Healthy

• the welding machine for pipes can not be turned off until the complete end of work;
• the optimal temperature is 260 degrees C;
• details must be heated at the same time;
• if the elements participating in the compound are not heated, then the seam will not work reliable, since the viscosity indicator of the material will be insufficient for good diffusion;
• overheating will cause instability of the material and the pipe will not be inserted into the fitting;
• during frost, it is better not to touch the details in order to avoid deformations;
• if marriage is allowed, it is necessary to cut this place and repeat the whole process first.