How to solder plumbing pipes

Soldering plastic pipes - devices and tools for joining

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To branch or conduct various water communications (heating systems, sewerage and water supply), it is necessary to use special technologies. Soldering plastic pipes can be done by specialists, but it is also easy to do it yourself.

Soldering tools

To connect individual parts of the water supply system to each other, it is necessary to use temperature-influenced technologies. Soldering or welding plastic pipes allows for the diffusion of plastic molecules, resulting in a strong and tight connection.

Photo – apparatus for soldering plastic communications

This work is carried out using special devices - a welding inverter for plastic pipes or a gun:

1. The welder is considered a more professional device and is mainly used by experienced plumbers. Its price is an order of magnitude higher than a standard household pistol;
2. The gun is a kind of soldering iron that can specifically influence individual parts of plastic or metal-plastic communications.

Welding machines can be classified by power. Nowadays, the most popular are universal models with 1500–1600 W ratings. They are convenient for household use; in addition, the kit also includes a set of nozzles for working with various types of pipelines.

https://www.youtube.com/watch?v=ooY-UcQuIbU

Photo - soldering iron design

It should be noted that in addition to special devices, additional tools will also be needed. In particular, these are scissors for cutting plumbing parts. As well as a roller pipe cutter, which allows you to ensure the most even and smooth cut on the surface of communications.

Also, when working with metal-plastic or foil-reinforced pipes, you will need a cleaning tool - a grinder. It will even out the edge of the cut, on which small irregularities often remain after trimming the desired area. If you ignore this process, the connection may not be strong and tight enough, which will affect the operation of the entire sewer system.

If soldering of large diameter plastic pipes is required - from 110 mm, then an electric coupling is used. It is pressed onto the connection and heats the joint. In the process, the main role is played by the centering of individual sections of communications, since it is almost impossible to control the process during welding.

To work with such a device, a special centering machine is used, which allows you to level the cut surface in order to obtain the tightest possible seam.

The power of couplings is somewhat different from the power of welding machines and soldering guns; in most cases, slightly higher values ​​are required - over 1500 Watts.

Cold soldering is also often used at home. The technology involves the use of an aggressive adhesive composition, which ensures the diffusion of plastic molecules without the use of heating elements.

The main advantage of the method is its simplicity. Such welding is easy to perform even without experience, and the purchase of additional equipment is not required. But at the same time, such a soldering is considered short-lived, i.e.

These are more urgent measures than an option for permanently connecting pipes.

Photo - example of cold soldering of plastic communications

You can buy a tool for soldering plastic pipes in almost any plumbing store; on average, it costs from 800 rubles to several tens of thousands. For example, in Sevastopol the cost of WESTER DWM 1000B varies from 1800 to 2000 rubles. The price depends on the declared power of the device, the brand and its purpose.

how to solder plastic pipes correctly

Soldering instructions

Independent welding of plastic pipelines is carried out using a sewerage project and in accordance with GOSTs. For each material, soldering is carried out in accordance with a certain temperature; the table below will help you select the required values:

Diameter, mm	Heating, seconds	Welding, seconds	Cooling, seconds
16	6	4	3
20	6	4	4
25	7	4	4
32	9	4	4
40	12	5	4
50	17	5	5
63	23	5	5
75	30	7	7
90	38	7	8
110	48	9	10
160	80	14	14

Step-by-step instructions on how to solder plastic pipes for heating systems or connect water pipes:

1. You need to install special attachments on the welding device, for example, fittings for 25 mm pipes. Using the table, the heating time is determined; the temperature, according to the standards, is at around 260 degrees. This is the optimal parameter for soldering conventional plastic and reinforced pipes;
2. Afterwards, other plumbing tools are prepared. Before cutting, be sure to check that the cutter is sharp. For small diameters, it is recommended to make the cut not at a right angle, but at 45 degrees;

   Photo – soldering kit

3. Now you need to measure the size of the fitting on the pipe and take into account a gap of 1 mm. He must be present when joining. Mark it on the communication. This is very important, because the fitting cannot be pushed in all the way; after heating, the plastic will expand slightly;
4. A fitting must be placed on the preheated nozzle, and then a pipe must be inserted into another hole in the connecting part. Next, the gun heats up and the nozzle warms up again along its entire length;

   Photo - heating elements

5. All that remains is to carefully remove the heated parts and connect them. The result will be a strong and sealed mount with a fitting;
6. The next stage of pipe soldering involves reheating the soldering iron, but only now a piece with a fitting is put on the nozzle, and a free part of the communication is inserted into another hole;
7. After heating, the operation is repeated: the parts are removed from the nozzle and connected.

When the work is completed, you need to wait the specified time to cool the connection; some craftsmen also use a hairdryer to speed up the process.

Photo – hair dryer for plastic

Sometimes a heating iron cannot be used and the use of electric couplings is required. Their principle of operation is very similar to that described above, the main difference is that for such pipe soldering, the entire apparatus is heated, and not its individual nozzles.

Before starting welding, it is necessary to degrease the sections and also clean them of dust and dirt. To do this, wipe the inside of the fitting and coupling with alcohol, and the outside of the pipe. Soldering is done in the same way as mentioned earlier.

Plumber's recommendations:

1. Do not apply too much pressure when connecting the pipe to the fitting. After soldering, the plastic becomes more pliable, which is why wrinkles may appear inside the pipe if excessive pressure is applied;
2. Do not allow the fitting to move freely along the pipe;
3. Strictly monitor the heating time and temperature. If you exceed or, conversely, reduce these indicators, the fastening will turn out to be fragile;
4. When working at home with water or sewer pipes, leave a gap of no more than 1 mm at the fastening site, otherwise there will be leaks in this area.

Source: https://www.kanalizaciya-stroy.ru/pajka-plastikovyx-trub.html

How to properly solder polypropylene pipes to create strong connections - Prof Pipes

Today, polypropylene pipes are used to install the water supply system. These are easy to use, reliable and durable products. With their help, anyone can create a plumbing system of almost any configuration. The main thing is to know the connection rules. This article will discuss exactly this. Here we will talk about how to solder polypropylene pipes.

Methods for soldering polypropylene pipes

To connect polypropylene pipes, you can use one of three methods . Namely:

• using diffuse soldering (using a special device - “iron”);
• soldering using electrical fittings;
• use of cold soldering.

The most common method is diffuse soldering. In this case, various additional fittings and an electric heating device (soldering iron or “iron”) are used. This method will be discussed in more detail below.

When connecting using electrical fittings, special connecting elements are used. They are put on the ends of pipes . After this, electrical voltage is applied to special metal inserts in the fitting. As a result of heating the metal, polypropylene melts, and after cooling, a strong connection is created.

This method is rarely used, only in cases where soldering using a “soldering iron” is impossible. Large construction companies also use this method of creating communications from polypropylene pipes when performing large volumes of work. The fact is that the electrical fittings themselves are quite expensive, so using them at home is unprofitable.

Another method to connect polypropylene pipes is to use cold welding . Special glue is applied to the desired area. With its composition, the adhesive mass slightly softens the polypropylene. The result is a strong and reliable connection. You can learn more about this method by watching a video from the Internet.

But this method also has its drawbacks. Firstly, cold soldering can only be used when installing communications for supplying cold liquids (cold water supply).

When heated, the connection may lose its tightness. Secondly, the pipes must be firmly secured.

If you use cold welding in areas where pipeline movement is possible, the connection (over time) will leak.

Features of diffuse soldering

To perform soldering of two polypropylene pipes, you must first prepare the necessary tools and materials. For work you will need:

• electric heating device or “soldering iron”. It can be purchased at any hardware store. But, most often, equipment is rented. Any communications made from polypropylene pipes last for many decades. Therefore, there is no point in buying rather expensive equipment for one-time use. You also need to prepare nozzles for the “soldering iron” of the required diameter. As a rule, they come with the device;
• device for cutting polypropylene pipes. This could be a special roller cutter, pipe shears or a hacksaw;
• to remove burrs on the ends of pipes after cutting them, prepare a file or a sharp knife;
• measuring tools (tape measure, ruler, marker or chalk);
• rags and liquid for degreasing polypropylene surfaces (alcohol or acetone);
• the pipes themselves and additional fittings (fittings).

Also, before soldering, you should familiarize yourself with the table , which indicates the time frame for all work. It takes a certain amount of time to heat polypropylene pipes of a certain diameter to the desired state. It also takes time for the polypropylene to lock into the joint and cool completely.

small diameter pipes are used to install a plumbing or heating system . In this case it is necessary:

• with an outer diameter of 16 mm, the heating time is 5 seconds, the fixing time is 4 seconds, the complete cooling time is 2 minutes;
• with an outer diameter of 20 mm, the heating time is 6 seconds, the fixing time is 4 seconds, the time for complete cooling is 2 minutes;
• with an outer diameter of 25 mm, the heating time is 7 seconds, the fixing time is 4 seconds, the time for complete cooling is 3 minutes;
• with an outer diameter of 32 mm, the heating time is 8 seconds, the fixing time is 6 seconds, the complete cooling time is 4 minutes;
• with an outer diameter of 40 mm, heating time is 12 seconds, fixing time is 6 seconds, complete cooling time is 4 minutes.

Having prepared all the tools and materials, as well as knowing the required time parameters, you can begin soldering work. How to do this correctly is described in the next chapter.

Stages of work execution

Soldering of polypropylene pipes is carried out in several stages . Namely:

1. First, marking and cutting of a piece of pipe is done. After this, using a knife or file, all burrs are cut off from the cut end. If the outer diameter of the pipe is more than 40 mm, then it is necessary to cut the ends at an angle of 45 degrees.
2. Now you need to “dry” check the connection . To do this, the prepared end of the pipe is inserted into the additional fittings (fitting). Check to see if there are any distortions or defects in the fitting itself. If any are found, it is better to make a replacement. After this, the end of the pipe is degreased, and the depth of the entrance to the fitting is marked on it. In this case, you need to leave a gap of 1 mm. It is necessary to avoid reducing the internal diameter of the pipe when extruding the end edge during soldering. Since pipes with a reinforcing layer are used to create a heating system, it is removed before further work (in the area that will be included in the fitting). To do this, you can use a knife or a special sewing machine.
3. Now you need to select a nozzle for the electric heating device of the required diameter. It's worth practicing a little to fit the pipe onto the nozzle. It is better to conduct training on a cold tool, because during soldering this will need to be done quickly but carefully.
4. The next step will be preparing the “soldering iron” for work. The selected attachments are put on it, and the equipment itself is installed on a flat, stable and durable base. It is better to place the “soldering iron” in a place so that it does not interfere with the marking and installation work itself. After this, connect the device to the power supply. A lit indicator will indicate that the soldering iron is ready for use. On some models, it is necessary to pre-set the heating temperature (in order to solder polyethylene pipes, 260 degrees will be enough).
5. After heating the “soldering iron”, the connection parts are put . In this case, you must first put a fitting (additional fittings) on the nozzle and then insert the end of the pipe into the other one. It is necessary to remove (after waiting the required period of time) in the reverse order.
6. After removing the connection elements from the heating device, they are inserted into each other, up to the pre-marked mark. In this case, axial rotations cannot be made.
7. Now wait some time for the polypropylene to set. Further work can be continued after the joint has completely hardened.

At this point, the work on soldering polypropylene pipes is completed.

Conclusion

To install the heating system, polypropylene pipes with a reinforcing layer . To connect them, you can use diffuse soldering, cold welding or electrical fittings.

But it is the first option that is used most often in everyday life. By purchasing or renting an electric heating device (“soldering iron”), all the work can be done with your own hands and in a short time.

And you can get acquainted with all the subtleties by watching a video from the Internet.

Source: https://profpipe.ru/drugoe/kak-pravilno-payat-polipropilenovye-truby-dlya-sozdaniya-prochnyh-soedinenij.html

How to properly solder polypropylene pipes

Surely it will not be a secret to you that modern high-quality repairs with the replacement of a heating system or plumbing cannot be imagined without the use of polypropylene, i.e. plastic products.

This material quickly appeared on the building materials market, revolutionized the water supply system and firmly took a leading position.

In this article we will talk about how to solder polypropylene pipes with your own hands and how to save on calling specialists. This is a kind of instruction for carrying out work.

Advantages of the material

In the life of a modern person, plastic is used in almost all spheres of his life. They have become simply indispensable components for repairs and construction of any scale: for heating, water supply, sewerage, etc. This is because such pipes for utility networks have undeniable advantages over other materials :

• Do not corrode;
• They are highly resistant to chemicals;
• Excellent resistance to various types of microorganisms;
• They have low sound and thermal conductivity;
• Lightweight for easy transportation;
• Environmentally friendly;
• Not difficult installation;
• Can be laid in both open and hidden ways;
• Long service life - with proper operation up to 50 years of service.

Next, we will answer the question at what temperature to solder polypropylene pipes.

Please pay attention! The optimal operating mode under which polypropylene pipes should be soldered by hand is: operating pressure up to 15 bar at a temperature of 0-10°C and up to 2 bar at a high temperature of up to 95°C.

It is thanks to its environmental properties that polypropylene is widely used in home water supply and heating. A wide selection of fittings with various types of chrome or brass inserts makes it possible to use them with existing parts of engineering structures or plumbing items.

Necessary equipment

Let's look at how to solder polypropylene pipes with your own hands. For the installation of heating or water supply lines, products with an outer diameter of 16-63 mm are used. To connect them, socket or, as it is also called, sleeve welding is used. In order to solder you will need the following:

1. A soldering iron with a set of nozzles with different diameters. Well, how can you choose the appropriate soldering iron so that it is of high quality and allows for quick installation. The choice of tools is now really great, as is their pricing policy. A link to the selection rules will be after the article.

• The power of the tool plays a leading role. If you plan to use it at home to solder diameters 16-63 mm, then 1200 W will be enough for you. If you have to solder polypropylene pipes in hard-to-reach places and at a professional level, then you will need 1800 W or more. But let’s say right away that a novice installer will not necessarily need such professional devices at home.
• The included nozzles act as heating elements. They consist of a sleeve, which melts the outer part of the product, and a mandrel, which melts the inner part of the socket of the connecting part. The nozzles must have a non-stick Teflon coating. Most often, a soldering iron kit comes with 6 nozzles of different diameters.
• The most convenient will be a soldering iron that allows you to install not one, but three nozzles. This design provides serious time savings, because you will spend much less of it in the process of replacing a nozzle of one size with another. After all, do not forget that to replace the nozzle you will need to cool it, replace it, and then warm it up again.
• A soldering iron that allows you to professionally solder products usually has electronic temperature control. It allows you to control heating with an accuracy of 1-5°C. Of course, you can do without this adjustment and simply buy a thermometer to measure the temperature of the working part.

Please pay attention! When you work, the soldering temperature of polypropylene pipes must be observed. It is important not to exceed the operating temperature of the nozzle of 260°C, at which polypropylene can be soldered. Already at 270°C, the plastic will lose its stability, will stick too much, and will not fit into the fitting. But if the working part is underheated, polypropylene will not reach the required viscosity and, as a result, the necessary diffusion of the material will not occur. The consequence will be an unreliable connection.

2. The next tool that you will need when you decide to figure out how to properly solder polypropylene pipes will be plastic scissors.

3. In addition, you will need a pencil, tape measure, tarpaulin rags, and, of course, polypropylene pipelines and the necessary fittings.

What types of fittings are there?

To understand what can be soldered and how to solder different sections, you need to understand what additional connecting elements there are.

1. Solder couplings.
2. Angles 45° and 90°. Used for both different and the same sizes.
3. Tee or triple square.
4. Crosses.
5. Welded seat.
6. Plugs.
7. Soldering for polypropylene.
8. Transition having an external type of plastic thread DG.
9. Combined couplings (with external, internal thread or union nuts).
10. Combined tees (with external, internal threads or union nuts).
11. Combined angles (with external, internal thread or union nuts).
12. Combination angles for installing various types of appliances (for example, mixer).
13. Ball valves, straight or angled with American type.
14. Walk-through water socket.

How to use a soldering iron

To understand how to solder polypropylene pipes, you need to understand the technology of the soldering iron. So, let's begin.

• The soldering iron must be placed on a flat surface. The nozzles are installed to the required diameter and tightened with special wrenches. A nozzle should be installed closer to the edge, which will be required in order to solder directly on the wall. It will be more convenient to assemble all separately located parts of the pipeline on a permanently located soldering iron, which you can do yourself. But you will need to assemble the parts into a chain on the wall with an assistant.
• Proper soldering should begin only after the tool has warmed up to operating temperature, approximately 10-15 minutes after it is turned on. Remember the nominal operating temperature in order to carry out soldering efficiently.
• The soldering iron must not be unplugged during the entire operation, i.e. while you solder everything.
• Two parts need to be heated at the same time.
• The plastic remaining on the nozzles must be removed with a tarpaulin rag after installing each fragment. It is not allowed to clean cooled attachments.

Soldering technology for polypropylene pipes

Next, we will consider the rules for soldering polypropylene pipes.

1. Using special scissors, cut the desired piece perpendicular to the axis.

2. Select the required fitting size. Please note here that the unheated fitting must have an internal diameter that will be slightly smaller than the outer diameter of the pipeline.

3. Clean the end of the pipe and the socket of the fitting from dirt, degrease it with alcohol or soapy water and dry it.

4. Place the parts to be connected on the corresponding nozzle on the soldering iron. The product must be inserted to the full welding depth into the sleeve, and the fitting socket must be placed on the mandrel.

5. After placing the parts in the nozzles, it is necessary to maintain the heating time. Here you need to act in accordance with the data in the table below. Let us explain that the table indicates the time required to heat the parts. However, the data applies to an air temperature of 20°C. If you work at a lower temperature, then you need to heat the parts longer, and if at a higher temperature, then reduce it. The following table shows the soldering time for polypropylene pipes.

6. After heating, remove the parts from the soldering iron and connect them together. Here we draw attention to the fact that the connection must be made without rotation along its axis and to the entire depth of the fitting socket. The operation must be performed quickly while maintaining alignment.

7. If you did everything correctly, then after connecting, a continuous influx of plastic should appear along the edge of the socket. You can see an example below.

8. Next, allow time for the parts to cool. During this period, various types of deformations (bends or rotations along the axis) are unacceptable. Here we draw attention to the fact that if a connection has occurred and the alignment or angle of relative position is shifted, then the part must be cut out and reinstalled. Soldering tees, angles and taps must be done with special attention. For example, the faucet handle should move easily.

If you do not know how to properly solder polypropylene pipes, then it is advisable to perform test soldering. To check the quality of the soldering, you can cut the prototype along its axis. The result should be a monolithic structure.

Do not forget that the technology for soldering polypropylene pipes requires compliance with safety precautions, because... You will carry it out using high temperatures, power tools and plastic, which will emit harmful fumes during heating.

Source: https://StroySoveti.ru/otoplenie-i-santehnika/kak-spaivat-polipropilenovyie-plastikovyie-trubyi.html

How to evenly solder polypropylene pipes?

Sooner or later you have to replace old metal pipes that are leaking. Now you don’t have to seek the services of a plumber to change pipes. The best option is not metal, but polypropylene pipes.

If it was not possible to successfully connect plastic pipes, you can always use couplings to correct the defects. It is necessary to name the main advantages that polypropylene pipes have:

• High strength;
• No corrosion;
• Ease of installation;
• Long service life.

You can always correct poor quality work.

How to properly solder polypropylene pipes

Even if you don’t have specific skills in installing plastic pipes, you can quickly learn how to do it. To complete the work you will need some tools:

• Directly pipes;
• Couplings;
• Angles 90 and 45 degrees;
• Threaded metal connections;
• Clips for attaching pipes to the wall;
• Soldering iron;
• Insulation for pipes;
• Pencil and tape measure.

Before you begin installing heating or water pipes, you must select the right materials. It is best to buy pipes that have the same diameter as the old ones. Then there will be no problems when connecting the metal section of the pipe to the plastic.

DIY installation of polypropylene pipes

Today, diffusion welding is used to connect plastic pipes. Fittings, angles, as well as couplings and adapters are also used. If polypropylene pipes are installed for water supply, you can count on them to last about 50 years. However, polypropylene is suitable for heating for about 25 years.

Connection of polypropylene pipes

The service life of pipes is affected by the pressure and temperature conditions in the system. Although plastic pipes can withstand high pressure at the highest temperature. However, if the pressure and temperature are simultaneously high, this significantly reduces the service life of the material.

In order to determine the approximate service life of polypropylene pipes, we developed a table that indicates the service life at certain temperatures and at a certain pressure.

It is worth noting that at home there are practically no large pressure drops. Even if this happens, the pipes will withstand the load. No need to worry about the strength of the product.

You can find absolutely any color of polypropylene pipes on the market. The only thing is that the black color of the pipes means that the material is not exposed to ultraviolet rays.

It is important to note that polypropylene pipes, which are assembled using a soldering iron, cannot be further disassembled. Today polypropylene is used for heating and plumbing systems. Pipes used for water supply can be connected in such a way that they can be dismantled later. Polypropylene can be connected to a metal pipe.

Polypropylene pipes are used in the heating system for risers, wiring and for connecting the riser to the radiator. Due to its long service life, polypropylene can be used both hidden (in the wall) and outdoors.

There are four types of polypropylene pipes:

1. Thin pipe PN10. Its working pressure is 1 MPa. Used for heated floors. The maximum temperature that the pipe can withstand is 45 degrees. For cold water supply - up to 20 degrees.
2. Pipe type PN16.

   Used for low pressure and cold water supply systems.

3. Pipe PN20. This is a universal material that can withstand pressure up to 2 MPa.

   Used for both hot and cold water supply.

   The maximum temperature that the system can withstand is 80 degrees.

4. Reinforced pipe with aluminum foil - PN25. Withstands pressure up to 2.5 MPa. Used for cold and hot water supply. Withstands temperatures up to 95 degrees.

To connect polypropylene to metal, chrome-plated and brass fittings are used.

Types of fittings for polypropylene pipes

1. Solder couplings (for the same or different pipe diameters).
2. Angles with an angle of 90 and 45 degrees (for identical or different pipes).
3. Triple angle and tee for soldering pipes of the same diameter.
4. Crosses.
5. Plugs.
6. Welded seat.
7. Polypropylene soldering.
8. Combined couplings with different types of threads.
9. Adapters with external thread.
10. Combination corners with union nut.
11. Corners for mounting various devices (including faucets).
12. The water outlet is passable.
13. Cranes, corner taps.

How to connect polypropylene pipes

It seems that soldering polypropylene pipes is not so difficult. However, the work requires a lot of attention and accuracy. Before you start soldering the material, you need to thoroughly study the rules for using a soldering iron, which are available in the device instructions.

There is definitely a point on how to solder polypropylene pipes. If all the work is done step by step, then there should be no questions about completing the task.

Tool for welding polypropylene pipes

The instructions contain a table on pressure and temperature conditions of pipes. It is important to learn how to solder pipes with fittings. You must follow all safety rules.

Stages of work completion

Before you start installing a new plumbing or heating system, you need to draw up a rough diagram. Additionally, places for installing instruments and taps are marked. Next, you need to solder all parts of the system, which can then be combined into larger parts. The soldering iron kit includes special legs on which you need to install the device during operation.

Recommendations . For ease of soldering pipes, it is necessary to keep the parts to be connected horizontally.

In order to solder vertical pipes, you must have an assistant, since the process of performing the work is not easy. An assistant will remove the soldering iron and lay the pipes straight. At that time it is necessary to solder the pipes.

At the last stage of work, the final assembly of the entire system is carried out. An assistant will help hold all parts of the system in position while another person solders the pipes.

If the diameter of the pipe that needs to be soldered exceeds 63 millimeters, then a special nozzle is used. The two pipes are connected using a coupling. And all threaded connections are made using sockets and fittings

To solder a polypropylene pipe with a diameter of more than 63 millimeters, butt welding is used. This is the most reliable type of connection that can be used.

Carrying out soldering work using the Fuziotherm apparatus

For welding work, it is recommended to use the Fusiterm machine. So, how to properly operate this device?

Before turning on the Fusitherm to warm up, you need to collect all the tools. If two pipes are to be soldered, then the welding tools are placed in special holes in the device.

Soldering Station

Polypropylene pipes are soldered at a temperature of 260 degrees. The device has an indicator that will show the temperature. Do not solder products until the required temperature has been reached. Even when the temperature is already 260 degrees, you still need to wait about 5 minutes and start working.

Socket soldering

If the diameter of the pipes to be soldered is up to 40 millimeters, then a device with a centering device, as well as with special nozzles, is used. When all the attachments are securely attached to the device, it can be plugged into the network.

How to connect polypropylene pipes

Stages of socket soldering

1. Using special scissors, a measured part of the pipe is cut off. If the pipe is reinforced, you need to clean its ends.
2. When the device warms up, you can start soldering the pipes. Work is carried out with gloves.
3. To avoid distortion of the soldering joint, all work must be carried out quickly and accurately.
4. The soldering elements are fixed. Any load on the pipe is temporarily eliminated.

Only if all soldering rules are followed can the ideal quality of the work performed be achieved.

Today you can easily buy any type of polypropylene pipes. There is a large assortment that differs in price and quality. Remember that pipes are selected that will meet the requirements set for a certain type of system - either a heating system or a regular plumbing system. The temperature and pressure that will be in the system are taken into account.

Don't skimp on purchasing materials. The polypropylene pipe system is designed for a long service life. For home purposes, you can buy industrial types of pipes. Then you can forget for a long time about what a plumbing or heating system is.

After all, industrial-grade pipes have greater strength and can withstand high temperatures and pressure, which is practically not found in a conventional home system.

To carry out high-quality work, there is a complete set of tools. If the work is done independently, then it is not necessary to buy tools to perform one-time work. You can rent a set of tools. However, if you are not sure that you will be able to complete all the work yourself, it is recommended that you contact qualified specialists.

Helpful information ! They have the necessary skills to do the work, as well as a full set of tools. Moreover, some teams provide a guarantee of the quality of the work performed. Installation of the system goes quite quickly.

Maintenance of polypropylene pipes is not particularly difficult. It is worth noting that in climatic zones where severe frosts prevail, it is recommended to carry out additional insulation of pipes, especially in the basement and attic.

Source: https://gscomplect.com/kak-rovno-spayat-polipropilenovye-truby/

Tools for soldering plastic pipes and rules for their use

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Pipe Soldering Tools

Plastic pipe soldering technology

Pipeline assembly

When repairing the water supply or sewer system in your home, you have to deal with a variety of materials. One of these materials is plastic pipes, which today are the best option for arranging sewer and water mains. This article will talk about how to solder plastic pipes.

It is not for nothing that plastic pipes are considered the optimal material for laying pipelines - this material has a number of important advantages:

• High mechanical strength and resistance to deformation;
• Long service life;
• Excellent resistance to various aggressive chemicals;
• Low cost;
• Ease of installation and maintenance.

Pipe Soldering Tools

Soldering plastic pipes is impossible without special tools that need to be purchased or rented before work.

The list of necessary tools includes the following devices:

• Apparatus for soldering plastic pipes;
• Plastic pipe cutter;
• Measuring devices (tape tape, level, etc.);
• An extension cord needed to connect electrical equipment.

Naturally, all tools and equipment must be of the utmost quality - the strength of the connection directly depends on this.

The main element, the absence of which will immediately put an end to all work, is a soldering iron for plastic pipes. The cost of a mid-level soldering iron is not very high, and the quality of such equipment is sufficient for the job. However, if there is no need to solder plastic pipes often, you can rent the necessary equipment - it will cost much less.

When choosing a model and configuration of a soldering iron, you must first of all take into account the diameter of the pipes that will be connected. The fact is that soldering pipes requires nozzles of the appropriate size, and this must be monitored. Inexpensive soldering equipment usually comes with only two or three attachments of the most common sizes.

The principle of operation of a soldering iron is to heat the edges of plastic pipes until they soften so that they can be joined. To simplify the work, it is worth selecting equipment with the ability to adjust the soldering temperature.

In addition to the soldering iron, the work requires a cutter, which is a typical type of scissors with which you can cut plastic pipes without damage or deformation. Since the quality of the cut directly affects the quality of the final seam, this factor should not be neglected.

Sometimes, instead of a special cutter, a regular hacksaw is used. This should not be done - when using a hacksaw, a lot of burrs inevitably appear, due to which the quality of the seam is insufficient, and after some time the soldered pipeline begins to leak.

This is where the list of special equipment ends - all other tools and devices are quite common and any owner has them.

Plastic pipe soldering technology

Before you start soldering plastic pipes, you should read the appropriate instructions. It will not be superfluous to watch thematic videos to understand how to solder plastic pipes correctly. Of course, before starting work you need to prepare all the necessary materials and equipment.

The sequence of actions required for soldering plastic pipes is as follows:

• First, the soldering iron is connected to the network and warmed up to operating temperature;
• The pipes to be connected are prepared and properly processed;
• The prepared pipes are inserted into the connectors of the soldering iron and heated until the plastic becomes soft;
• The softened pipes are pressed against each other at the required angle with a quick and confident movement;
• The pipes are held in this state until the joint hardens.

By following this simple algorithm, you can achieve a reliable connection of plastic pipes. The main thing is to perform all actions confidently and carefully, avoiding mistakes. Everything must be measured and cut in advance, and the tool must be in good working order and ready for use. Before using a soldering iron for plastic pipes, you should practice a little on pipe scraps, and only after that start finishing work.

If we describe the pipe soldering technology in more detail, we will get the following diagram:

1. First, nozzles are screwed into the soldering iron, the diameter of which corresponds to the diameter of the pipes being connected. Now the soldering iron is ready for use and can be plugged into the mains for heating.
2. The pipes are prepared for soldering, for which they need to be cut into suitable pieces, clean the edges with fine sandpaper and degrease.
3. Next, both pipes (or a pipe and a fitting) are inserted into the soldering iron nozzles and heated. During the entire process, the parts must be held tightly in the connectors. You need to measure the time spent on heating from the moment when both parts fit tightly into place. You cannot spin parts that are already on the nozzles - this often leads to deformation of the pipes and weakening of the seam.
4. After the time required for heating has elapsed, both parts are removed from the soldering iron connectors and pressed tightly against each other. When combining parts, do not scroll.
5. It usually takes about 30 seconds for the seam to cool down, and all this time the parts must remain stationary. After this time, the welded seams are closed from various external factors and left until completely hardened, which takes about 1 hour.

Pipeline assembly

Soldering plumbing pipes is only half the battle, because you still need to assemble a pipeline consisting of prepared components. To assemble the one-piece structure, you will also need a soldering iron. The sequence of connecting all the nodes into a single system is quite simple - first a vertical riser is installed, then discharge pipelines are laid, and after that all these elements are fixed in place.

To fix the units in their places after installing the shut-off valves, brackets are used, which must be located next to the welds (usually the distance between the brackets and the seams is about 5 cm). The remaining sections of the pipeline are fastened at regular intervals to prevent sagging and damage to the pipes.

Particular attention should be paid to compliance with safety rules and regulations. Soldering of water pipes must be carried out using personal protective equipment - goggles and gloves. You can start the system no earlier than an hour after connecting all nodes.

Conclusion

Soldering plastic water pipes is a simple process that even inexperienced craftsmen can do. It is enough just to understand the basic rules and principles of this work and approach it with all responsibility.  

Source: https://trubaspec.com/soedinenie-trub/instrumenty-dlya-payki-plastikovykh-trub-i-pravila-ikh-ispolzovaniya.html

How and what to solder plastic pipes with - Plumber in Dele

The range of construction products is growing every year. Modern materials are appearing on the market that make construction stages easier and increase worker productivity.

Consumers tend to use pipelines with a long service life when planning internal systems in their homes.

Plastic internal communications branches have become a suitable alternative that meets consumer needs. How to solder plastic pipes?

Another advantage of such technologies is the ability to independently repair or replace water supply and heating networks. How to solder plastic pipes for water supply?

Let's understand the types

Metal-plastic Polyethylene

Such communications are divided into subtypes:

1. Polyethylene - used for laying wiring inside buildings and external routes. They can be used on high-pressure pipe connections and at low ambient temperatures.
2. PVC is used to reduce the cost of repairs.
3. Metal-plastic ones are the most practical products, with a useful life of more than 50 years. Ideal option for replacing hot water supply.

The widespread use of this material is due to a number of reasons. Positive properties of such structures, in contrast to metal ones:

1. Long service life.
2. Low corrosivity.
3. Easy to install.
4. Does not require special skills.
5. Environmentally friendly material.
6. Economical and easy to use.
7. Lightweight and easy to transport.
8. Resistant to the harmful effects of microorganisms.

Your water supply

Coupling assembly Soldering

Polyethylene models are mounted using the welded method or using couplings/fittings (coupling assembly). How to solder plastic pipes for water supply?

For new water supply networks, products made of PVC and polyethylene without reinforcement or reinforcement are suitable. Preparation requires creating a diagram of the future water supply indicating the lengths of the branches, its position and all the fittings necessary for installing the structure. Correct calculation of the lengths and number of bends will simplify the technology, increase the speed of task completion and prevent rework.

Soldering iron Pipe cutter

To solder polyethylene connections you will need:

1. Soldering iron.
2. Pipe cutter
3. A trimmer for cutting pipes and trimming the edges of cut ends.
4. Fine sandpaper for cleaning edges
5. Connecting coupling (if coupling assembly)

The heating device is a special device with a sole with special nozzles of various diameters attached to it. There are devices that include two or more attachments at the same time.

The stages of technology for laying hydraulic communications will tell you how to learn to solder:

1. We measure the required length with a tape measure.
2. Use a pipe cutter to cut the measured length.
3. Trim the cut ends. This is an important step in soldering. The cuts must be smoothly sanded and cleaned. To be more sure, you can additionally degrease it with an alcohol solution.
4. We solder the ends. If a coupling connection is used when installing life support networks, then we install a coupling/fitting at one end of the structure and heat it together with the future return in a soldering iron nozzle of the required diameter. After warming up, immediately connect the ends and wait for the assembly to cool completely. The quality of welding is indicated by the presence of a shoulder.

Attention! When installing heat and water supply using a soldered seam, it is strictly forbidden for water or moisture to fall into the cavity or onto the surface. When heated, water, turning into steam, deforms the plastic structure, as a result of which it loses its strength.

What to pay attention to

Temperature conditions for soldering are described in the instructions for the tool. Modern products have an automatic heating mode depending on the size of the installed network and the welding depth. On previous brands, the heating strength was selected manually.

At what temperature should plastic pipes be soldered? When soldering polyethylene risers, we set the temperature regulator at around 220 ° C, for polypropylene risers - 260 ° C. There is an indicator on the heating mechanism that shows the device is ready for use. The indicator lights up only in heating mode.

The duration of soldering depends on the circumferential radius of the pipeline, and can range from 5 to 40 seconds. The ends should not be overheated. This can cause a blockage to form at the adhesion site.

If you need to install a water supply of the same size, you should not overpay for the number of nozzles and the presence of a temperature mechanism.

If you plan a large volume of long-term production using networks of various sizes around the circumference, then we purchase a universal device for connection with the latest technical capabilities and characteristics.

Soldering nuances

Knowing the technology for connecting autonomous communications is not enough. For high-quality installation, you need to know a number of features of laying and soldering housing branches. How to solder plastic pipes correctly? To ensure professional assembly of technological buildings, it is necessary to remember some connection nuances:

1. A warm-up time is provided for soldering assembly. This time ranges from 5 to 20 minutes.
2. The production of in-house life support should be carried out at temperatures above zero.
3. After soldering the ends, it is necessary to prevent them from scrolling or moving; it is enough to smoothly eliminate distortions. You need to let them cool. Turning the weld seam may cause a leak in the future. It takes the same amount of time to cool down as it does to solder it.
4. The required power of the soldering tool is 1200 W.
5. Home soldering irons are designed for soldering wires with a diameter of up to 32 cm. If you need to assemble products of large diameter, then we purchase a professional soldering device.
6. There should be no gaps between the edge of the pipeline and the internal thread of the fitting. Gaps can leak under high water pressure. Excessive force when compressing elements can lead to a decrease in the clearance in the cavity and impair the performance of the entire structure.
7. Residues of material from the nozzles should be removed after each pack produced. Since the nozzles have a special coating, carbon deposits should be removed with a wooden device so as not to damage the integrity of the surface. Scratches on the surface of the nozzle will worsen the technological characteristics of the device and render it unusable for further use.

Thinking about how to make heating?

Installation of heat supply has a number of difficulties. Heating models can be installed in rooms with low temperatures, which complicates the soldering process.

For heat supply, systems are developed depending on the temperature of the water supplied to the system and the operating pressure.

The use of plastic in construction has increased productivity and reduced costs for the necessary material.

Heating pipes are reinforced with fiberglass, which makes this material strong and durable.

Health protection and working conditions

When carrying out work related to heating heating main joints, we follow safety rules to prevent injuries and burns:

1. We solder using special protective gloves.
2. We monitor the cleanliness of the floor in the room. Dirt will negatively affect the quality of welding and the appearance of the entire structure.
3. The soldering iron is installed on a flat horizontal surface.
4. It is necessary to start working after the device has completely warmed up and after the readiness indicator has turned off.
5. We do not turn off the electrical outlet during the entire installation.

Soldering plastic pipes with your own hands is not difficult. The soldering process does not require professional skills or experience. Anyone can install life support networks in their own home.

The mandatory composition of the required tool includes only a soldering device. The remaining auxiliary tools can be replaced with improvised means, a pipe cutter - with a sharp knife.

A pipeline made of polyethylene structures and PVC is a reliable, durable and environmentally friendly system for supplying water and heating.

We recommend video: Secrets of installing polypropylene pipes

Source: https://ufa-santehnik.ru/konstruktsiya/kak-i-chem-payat-truby-plastikovye.html

Soldering polypropylene pipes - we figure out how to solder correctly

Due to their affordable cost and ease of connection, plastic pipes have taken a leading position in the installation of water supply and even heating networks.

Despite the fact that these structures are less strong and durable than metal ones, many prefer them when planning to change utilities in their houses and apartments.

The quick installation of products is especially attractive, since soldering polypropylene pipes allows you to create a strong and reliable connection in just a few minutes.

Classification of polypropylene pipes

Particularly durable plastic used for the production of pipes is not subject to corrosion, resists salt deposition and the appearance of limescale. Polypropylene structures are designed for long-term use. The manufacturer guarantees a 50-year service life of the structures.

This is indeed possible provided that the pipelines are operated under the pressure and temperature conditions specified in the instructions. The parts are designed for prolonged exposure to high pressure at a low temperature of the transported liquid, and vice versa - high temperature of the liquid at low pressure.

All polypropylene pipes can be divided into four categories

Polypropylene pipes are available in four colors, which does not mean any restrictions in use, with the exception of black, which are produced to be the most protected from UV radiation. The structures are used in water supply and heating systems; they can be connected to metal structures. Can be used in all types of pipelines: open, closed and wall. Polypropylene pipes are divided into categories:

• PN 10 – version with thin walls. It is used for heated floors whose temperature is not higher than 45C or for distributing cold water.
•  PN 16 - used for organizing cold water supply in systems with high pressure or in heating pipelines with low pressure.
• PN 20 is a universal pipe, it can be used for both hot and cold water supply, where the temperature is not higher than 80C.
•  PN 25 – the structure is reinforced with aluminum foil. Used for central heating and supplying hot water with a temperature not exceeding 95C. Can be used to connect a metal pipeline to a plastic one.

Preparation for welding + nuances of the process

The manuals that describe soldering technology indicate that structures with a diameter of less than 63 mm are usually connected using socket welding. At the joints of pipes, fittings are used, special connecting parts to which elements are welded. Larger diameter pipes are connected without fittings using butt welding. This method is considered the most reliable for them.

Soldering of polypropylene pipes is carried out using a manual welding machine, which is popularly called an iron.

For parts with a diameter greater than 40 mm, experts recommend using devices with centering devices, which are somewhat more difficult to operate. Welding machines are equipped with special removable nozzles for pipes.

They are heating elements made in the form of a sleeve for melting the outer part of the pipe or a mandrel for heating the inner surface of the part.

Manual machine for welding polypropylene pipes

The diameters of the nozzles vary from 14 to 63 mm. The heating elements are coated with Teflon, a non-stick material. During the welding process, be sure to keep the nozzles clean and wipe them after each use with special wooden scrapers or tarpaulin rags. This must be done while the elements are still hot; cleaning cold parts is unacceptable.

Work order

The recommended technology for soldering polypropylene pipes involves several stages.

Stage #1 - preparing the welding machine

The device must be installed on a flat surface so that it is easily accessible. Before starting work, you need to determine what diameter pipes will be soldered and prepare the necessary heating elements. The design features of the device allow you to use several attachments at once.

It is recommended that you install everything you need before warming up the device. The device heats up evenly, so the location of the heating element does not affect the temperature of the nozzle. They are fixed in the way that will be most convenient for work. To install attachments, use special keys. The desired temperature is set on the control panel of the device; for polypropylene pipes this is 260°. The device turns on and warms up, which takes about 10-15 minutes.

At negative temperatures, welding is prohibited. In addition, the time for soldering polypropylene pipes depends on the temperature in the room: in hot weather it is reduced, in cold weather it increases.

Stage #2 - pipe preparation

Using a pipe cutter or special scissors, the part is cut at a right angle. The cut area is cleaned and, together with the fitting, degreased using a soap or alcohol solution. The parts dry well.

If work is carried out with pipes of grade PN 10-20, welding can be performed. If with PN 25, you need to additionally clean the top layers of aluminum and polypropylene.

The work is performed using a shaver accurately but to the welding depth, which can be determined by the size of the welding machine nozzle.

You only need to cut a polypropylene pipe at a right angle

Stage #3 - warming up the parts

The elements are put on the device nozzles of the required diameter. The pipe is inserted into the sleeve up to the limiter indicating the welding depth, and the fitting is installed on the mandrel. The heating time of the parts is strictly maintained. It is different for each type of pipe; the values ​​can be found in a special table.

Stage #4 - welding elements

The heated parts are removed from the apparatus and connected to each other with a confident, quick movement while maintaining the alignment of the elements. When connecting parts, they must not be rotated axially or bent. You also need to strictly ensure that the pipe enters to the depth determined by the inner boundary of the fitting socket.

The parts are heated for a strictly defined time

Stage #5 - cooling the connection

Heated parts must be allowed to cool, this is especially important for thin-walled pipes. Any deformation of parts at this time is unacceptable; they can lead to sealing of the internal lumen of the pipe. After the parts have completely cooled, it is necessary to blow or pass water through them to ensure that they pass through.

example of soldering work

Also, this whole process can be observed in this video instruction:

Recommendations on how to solder polypropylene pipes are quite simple. You can handle this work yourself. Experienced welders suggest that beginners solder the first part, cool it, and cut it to make sure everything is done correctly. If there are errors, they will be immediately noticeable. In this way, you can quickly learn how to make reliable connections of polypropylene pipes, which will certainly come in handy during the installation or repair of pipelines.

Source: https://aqua-rmnt.com/uchebnik/svarka/pajka-polipropilenovyx-trub.html

How to solder plastic pipes

06-05-2017Pipes

For the installation of a modern pipeline system, polypropylene materials are used. Its more common name is plastic. If previously only solid iron materials were used in construction, at the moment they are successfully replaced by higher quality plastic. In this article we will tell you how to solder plastic pipes.

Features of the material

When polypropylene first appeared, it took a leading position in construction work. At an optimal cost, plastic has undeniable advantages:

• It is not subject to destruction, rusting, or corrosion.
• Reliable for the external environment.
• The use of plastic pipes in residential premises does not lead to an allergic reaction in humans.
• Plastic pipes are resistant to harmful bacteria and microorganisms.
• The ability to tolerate both low and high room temperatures.
• The material is quite light and easy to transport.
• A simple method of application at home.
• Installation does not require any special skills or abilities.
• If the operating conditions are observed, they can be used for half a century.

What are plastic pipes?

The material for the manufacture of plastic pipes is polypropylene polymer. This material can be used to build pipes of any type of water supply. It can withstand temperatures up to 110 degrees.

Pipes are resistant to low temperatures and do not collapse when frozen.

Today there are three main types of plastic pipes:

1. Pipes used for cold water supply.
2. Pipes used for various types of water supply.
3. Plastic pipes with a reinforced base. They are used for the manufacture of heating systems.

For domestic use, it is recommended to use pipes with a diameter of 2 cm to 3.2 cm. When purchasing pipes, you need to pay attention to their diameter, and buy soldering equipment in accordance with it.

Working with plastic pipes

Independent installation of a water supply system involves the following stages of work:

1. Surface preparation.
2. Pipeline installation.
3. Pipe connection.
4. Soldering plastic pipes with your own hands.

Independent soldering

To independently connect the water supply system in a building, you need to use soldering technology to connect the pipe parts:

1. It is necessary to first draw a plan for the water supply system in the building, indicating the location of the central riser and the main plumbing units.
2. Soldering of pipes must be done in the direction from the plumbing fixtures to the riser.
3. The work must be carried out using special equipment.

Soldering iron selection

The soldering iron is the main tool for work. An experimental device is in most cases expensive, but it can be rented.

A soldering iron for home use has some limitations in configuration, but has a reasonable price.

• When choosing a soldering iron, pay attention to its power. Thus, for welding plastic pipes with a diameter from 1.6 cm to 6.3 cm, equipment with a power of 1.2 kW is suitable. A more remarkable device (from 1.2 kW and above) is used for experienced construction work.
• To carry out the work, special soldering iron attachments are used. They ensure uniform heating of the device. To improve the quality of work and increase the service life, a special non-stick coating is applied to the surface of the nozzles. The standard package includes six nozzles with different diameters.
• Advice on the technology of using nozzles. The most ergonomic is considered to be the possibility of simultaneously using three elements at once. This will significantly reduce operating time. A soldering iron, the configuration of which requires the simultaneous use of only one nozzle, must first return to the original temperature when changing it. Only later is it possible to use a nozzle of a different diameter.
• The soldering iron design must have a heating temperature control function. Modern soldering irons have electronic controls, which allows you to regulate the temperature with great precision. If your soldering iron does not have a temperature control function, you need to buy a special thermometer.  

Rules for using the device

When carrying out the procedure, it is recommended to follow the basic rules for using the device:

• The average heating temperature should be 260 degrees. If the heating temperature is significantly lower, the strength of the pipe connection will not be achieved. At temperatures above 260 degrees, the material can and soldering will be impossible.
• Work must be carried out only on flat surfaces.
• Using gas wrenches, you need to install the required nozzles on the soldering iron.
• It is recommended to connect individual sections of pipes on a flat surface. Only after soldering is completed can they be installed on the wall.
• After connecting the device to the network, wait for an acceptable heating temperature. In most cases, it is achieved in a quarter of an hour.
• Do not disconnect the device from the mains during operation.

Advice! If during work there is excess plastic on the soldering iron nozzle, it must be removed immediately. This can be done using tarpaulin. It is unacceptable to remove polypropylene residues from a cooled nozzle.

Carrying out the soldering process

So, how to solder plastic pipes yourself:

1. Prepare the soldering iron for use and install the desired nozzle. Adjust the optimal temperature settings for the device and wait until it warms up.
2. Using special scissors or a hacksaw, cut the required length of the pipe. The work is done at a right angle.
3. Install the pipe and fitting onto the prepared soldering iron nozzle at the same time.
4. The heating time of the pipe depends on its diameter. Thus, equipment with a huge diameter must take much longer to warm up than small pipes.
5. After uniform heating of the pipe and fitting is completed, remove them from the device.
6. The heated pipe should be inserted into the fitting. The parts must be held for several minutes. In most cases, the time for the melting procedure on devices with different diameters is indicated in the technical data sheet of the soldering equipment.

Advice! Do not forget that if a mistake is made during soldering, this can lead to damage to the entire piping system. To eliminate it, you need to cut off the area with the flaw and use a soldering iron to restore the connection.

The soldering procedure is demonstrated in more detail in the following video:

Source: https://uchebniksantehnika.ru/truby/kak-paiat-plastikovye-truby.html

Do-it-yourself welding of polypropylene pipes

The welded connection of polypropylene pipes is characterized by higher reliability compared to other methods of combining products with each other. This connection technology does not have any differences when working with polypropylene. The only exception is reinforced products: their installation requires some specific features.

This technique is quite simple.
Welding can be carried out at home, observing the requirements of the technological process and having the entire arsenal of necessary tools. There are several options for connecting polypropylene pipes:

• diffusion soldering;
• soldering with electrical fittings;
• cold welding.

In this article we will talk about each method of combining cylindrical products in more detail, consider their advantages and disadvantages, and also learn how to properly solder polypropylene pipes.

Welders

Before you begin, you need to prepare the installation tool. To create a reliable joint between the structures and all additional parts, you will need a special soldering iron.

It is worth noting that sometimes the connection of products made of polypropylene is called welding. However, this process has many varieties, so it is important to remember that polypropylene pipes are connected in only one way - soldering. For the installation of such a system, threaded fittings and metal-plastic are not used.

Soldering polypropylene pipes requires the use of welding machines. There are several types of devices on sale:

• heater with a round cross-section;
• flat unit.

The second type of soldering machine is popularly called an iron, which is largely due to its appearance. Such devices differ only in their design.

For the first model, Teflon nozzles are put on the heater and fixed with parts similar to clamps. In the second device, the same nozzles are screwed to the heater on both sides. The rest of the design elements are no different. The main function of the device is to perform high-quality and reliable soldering of polypropylene products.

The set of soldering devices must include nozzles. The most inexpensive device, the set of which includes a minimum number of elements, is considered to be a Chinese soldering iron. Its power does not exceed 800 W. It is presented for sale together with a stand, as well as attachments that allow soldering of PP pipes with a cross-section of 20-32 mm.

When the heating system of a private house is made of cylindrical products of this diameter, this kit will be quite sufficient. But if more professional work involving soldering is expected, you will need a better device.

For pipes with a cross-section of 40-63 mm, a different soldering kit is required. It will have to be purchased separately. The most expensive sets, characterized by increased reliability, are manufactured in large European countries. Their kit includes the following parts:

• soldering iron;
• stand;
• Teflon nozzles of different diameters;
• scissors that allow you to cut pipes at 90 degrees;
• hexagon;
• Phillips screwdriver;
• roulette;
• gloves.

Since you have to work with hot equipment to solder polypropylene pipes, you must wear gloves when performing the operation. Beginners often get burned when touching the heating element.

The design of any soldering iron is designed so that it is possible to install several nozzles at once for connecting small-diameter pipes, which saves time, especially when working with products with a cross-section of 20-40 mm.

Soldering machine power

To evenly and quickly heat a pipe with a diameter of 63 mm, greater system power is required. For domestic purposes, a device with a value that determines the amount of energy not exceeding 0.7-1 kW will be sufficient.

If the power of the iron is more than 1 kW, it becomes professional. Its cost is much higher than the price of an ordinary soldering iron.

Soldering iron for polypropylene pipes

It is not recommended for a beginner to purchase such a device. It can be made from iron and appropriate materials, saving a significant amount.

Method one

To make a homemade soldering iron you will need:

• a broken old iron that still has a heating element;
• children's metal construction set;
• rubber handle;
• toggle switch;
• asbestos cord;
• duralumin;
• insulating tape.

Manufacturing technology

• use a grinder to cut off all unnecessary parts from the bottom of the iron;

• an aluminum cover is made;
• a box is assembled from the construction kit; a light bulb and a rubber handle are installed in it;
• a toggle switch and a soldering iron regulator are connected to the wire;

• all parts are combined into one whole;
• cables are soldered;
• The heating element is bolted to the body, having previously placed an asbestos gasket.

Thus, after spending a little time using available material, you become the owner of a homemade soldering iron for welding PP pipes.

Source: https://VseProTruby.ru/pajka/svarka-pp-trub.html

Soldering polypropylene pipes in hard-to-reach places: tips and tricks

Polypropylene pipelines (PPR), due to their affordability, physical parameters and ease of installation, are widely in demand in households when organizing cold and hot water supply. During self-installation, the greatest difficulty is caused by soldering polypropylene pipes in hard-to-reach places, which is quite difficult for a beginner to cope with without making mistakes.

Therefore, it is useful to study techniques - how to properly solder a pipeline near walls, the specifics of soldering in corners, it is advisable to be able to repair polypropylene sections of a pipeline in compliance with technology.

At the same time, it is very important to make the right choice of tool and know the most common mistakes made by beginners.

Fig. 1 Industrial apparatus for PPR butt soldering - principle of operation

Methods for welding polypropylene pipes

To connect polypropylene pipes, several welding methods are used depending on their diameter, wall thickness and area of ​​application:

• Stykova. The technique is used for joining large-diameter pipeline elements used in industrial and public utilities. The process occurs by simultaneous heating of pipe ends pre-cut at an angle of 90 degrees with a flat disk, after which their edges are forcefully pressed against each other on a special machine.
• Coupling. The technology is practically not used in welding polypropylene pipes (mainly with HDPE); the connection occurs using electric welded couplings, into which both ends of the pipe elements are inserted. When an electric current is passed, the inner casing heats up, becomes softer and loses its rigidity. As a result of this process, it is compressed under the pressure of the outer shell, forming a strong permanent joint between the connected elements (active hardening). After cooling, the active hardening effect remains, pressing the coupling tightly to the pipes.
• Bell method. The method, widely used in everyday life and in all areas of industry, consists of connecting the two ends of a polypropylene pipe using polypropylene fittings. For heating in everyday life and industry, special welding machines (irons) and heating nozzles are used, which simultaneously heat the surface of the pipe and the inside of the fitting, after which the elements are joined.

Rice. 2 Welding device - soldering iron

Necessary tool for soldering small diameter polypropylene pipes

The thermal diffusion method used for welding polypropylene elements is realized by heating them with special devices, usually called soldering irons or irons. Structurally, the unit is a steel body with a built-in heating element, to which cylindrical heaters (nozzles) are screwed, the dimensions corresponding to the standard outer diameters of polypropylene pipes.

The temperature is set by a mechanical thermostat and two switches; in more modern devices, an electronic temperature indicator with processor-controlled heating is installed. The majority of irons have a flat shape; a less common variety has a round heating element, the nozzles on which are fixed with double-sided clamping screws.

In addition to the iron, the following tool is required for welded installation of a polypropylene line:

• Scissors. Designed for cutting polypropylene pipes, they are often supplied with a soldering device.
• Pencil and tape measure. The tool, as well as a corner and a knife, are used to accurately measure and control the location of the cut areas and remove the internal chamfer.
• Set of connecting fittings. Includes straight and angle couplings, tees, taps, threaded fittings and other fittings used to change the direction or connect plumbing fixtures to the main line.
• Household chemicals. Substances may be needed to degrease the welded surface and clean it from dirt.

Rice. 3 Tools for working with PPR

Soldering polypropylene pipes in hard-to-reach places

When deciding how to solder polypropylene pipes in hard-to-reach places, the following factors should be taken into account.

Working with polypropylene pipelines in narrow places is more difficult than welding on straight pipe runs in conditions of sufficient space. Inconvenient places usually include areas near the top of the ceiling, spots in corners, and tight space conditions that make it difficult to install the soldering iron on the stand. In the latter case, you cannot do without outside help; an alternative solution is a special hook, prepared in advance in a convenient place, on which you can hang a soldering iron.

If the soldered pipe sections are located too close to each other on the wall, a special technique is used - the direct and mating parts of the joint are heated in turn. In this case, the first section is heated a little longer than the allotted time, and then the pipe is heated for a shorter time and, if possible, at a higher temperature (the regulator is set to a larger diameter).

The situation when the soldered sections must be of a certain length, but when welding them in line with a soldering iron, one of the parts will have to be cut to the width of two nozzles and a heating iron, can be solved in another way.

A similar nozzle is purchased, fixed on the heating platform, and each of the segments is simultaneously soldered in different planes, after which they are connected.

Using this method, you can mount not only straight sections, but also turns on walls, thereby ensuring a tighter fit of the line to the curved surface.

Rice. 4 Welding pipeline sections with an iron with two nozzles

Source: https://montagtrub.ru/payka-polipropilenovyih-trub-v-trudnodostupnyih-mestah-sovetyi-rekomendatsii-spetsialista/