Connect plastic pipes without a soldering iron. Connection of plastic pipes without soldering

The ability to assemble pipelines yourself is a definite plus polypropylene products. Using convenient and lightweight material, you can build a sewer with your own hands, repair and modernize the water supply.

The main thing is to understand the specifics of connecting prefabricated elements to each other. Agree, this is an important part of the work, responsible for the tightness of the line and its trouble-free operation.

We offer you detailed information on how soldering is done. polypropylene pipes, what equipment is used in the work, and also list the most common mistakes of novice welders.

The information we offer will help to build trouble-free communications. For visual perception, the article is supplemented with graphic applications and a video guide.

The soldering process is carried out due to the pronounced thermoplastic properties of the material. Polypropylene softens when heated - it acquires a state similar to plasticine.

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This is what a soldering iron ("iron") for polypropylene pipes looks like. uncomplicated electrical device, semi-automatic, thanks to which plastic soldering is done

For butt welding, the designs of soldering irons are characterized by increased complexity. Typically, such a technique includes not only a heating element, but also a system for centering welded parts.

As a rule, direct welding equipment, like the technology itself, is rarely used in the domestic sector. The priority of use is industry.

A more complex device, which is used to accurately center the parts to be welded with further process heating and soldering. Used with direct welding technology

In addition to soldering irons, the master will also need:

scissors - ;
roulette construction;
locksmith's square;
shaver for pipes with reinforcement;
marker or pencil;
surface degreaser.

Since the work is carried out on high-temperature equipment, be sure to wear thick work gloves.

Polypropylene Welding Procedure

Important warning! Welding work polymer materials should be carried out in a well ventilated area. When heated and melted, polymers are released toxic substances, which in a certain concentration have a serious impact on human health.

The procedure for welding polypropylene is simple, but requires accuracy and accuracy in work. Common mistakes should also be avoided, such as insufficient or excessive heating.

First of all, you need to prepare for work:

Install blanks of the required diameter on the heater plateau.
Set the regulator to 260ºС.
Prepare mating parts - mark, chamfer, degrease.
Turn on the soldering station.
Wait for the operating temperature to set - the green indicator turns on.

Mating parts (pipe - coupling) should be simultaneously put on blanks soldering station. In this case, the polypropylene pipe is mounted in the inner region of one blank, and the coupling (or socket of the fitting) on the outer surface of the other blank.

Usually, the ends of the pipe are inserted along the border of the previously marked line, and the coupling is pushed all the way. When keeping polypropylene parts on heated blanks, you should remember about important nuance technology - exposure time.

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Conclusions and useful video on the topic

Professionals always have something to learn. How to work with polypropylene can be seen in the following video:

Mounting pipelines made of polymers by soldering them “hot” is a convenient and popular technique. It is successfully used in the conditions of installation of communications, including at the household level.

People without experience can use this welding method. The main thing is to correctly understand the technology and ensure its exact execution. BUT technological equipment can be bought or rented.

Do you have experience in soldering polypropylene pipes? Please share information with our readers. You can leave comments and ask questions on the topic in the form below.

That is most often used for this, the so-called cold welding. This technology involves the use adhesive composition special purpose and fittings.

Benefits of using pipe joints without hot soldering

If you are thinking about how to connect a polypropylene pipe to a polypropylene one, then you can use a method that involves the use of special fittings. This technique has many advantages, among them it is especially possible to single out an increase in the efficiency of installation of water disposal and water supply systems, a decrease in the possibility of leaks that may occur during butt welding or during chemical compound. Among other things, the described technology is less labor-intensive, and also involves less power consumption. Among other things, it is associated with less material consumption. are quite cheap. With the help of fittings and glue, pipes of various diameters can be connected, which range from 6 to 400 millimeters.

Comparison of cold soldering with mechanical and welded joints

Before connecting a polypropylene pipe to a polypropylene pipe, you should consider all the advantages of the cold soldering method. Thus, this technique, with an insignificant material consumption, speed and quality of the work performed, is not inferior to traditional welding. This gluing technology does not involve the use of special equipment, which greatly simplifies manipulation. You do not have to use a special apparatus designed for welding, which consumes quite an impressive amount of electricity during operation. This makes it possible to reduce the cost installation work. If you are faced with the task of how to connect a polypropylene pipe with a polypropylene one, then it is worth comparing with the help of fittings and the mechanical interface of the elements. The latter technology is not so energy-intensive, but more material-intensive. This is due to the need to purchase additional fittings, which leads to an increase in the cost of work.

Connection features with fittings and glue

If you do not know how to connect a polypropylene pipe to a polypropylene one, then it is important to familiarize yourself with the technology. To do this, you have to use glue, which is intended for connecting pipes with fittings. The latter are most often made of chlorinated polyvinyl chloride. Glue after application begins to dissolve the surface of the parts by 1/3 of the thickness. This makes it possible to implement diffusion cold welding. On the this process influenced by temperature and humidity. Before connecting polypropylene pipes using cold welding and fittings, you must make sure that the temperature environment is in the range from 5 to 35 degrees. If there is a need for installation work at temperatures below zero, then frost-resistant glue should be purchased, which can be applied until the thermometer mark drops to -18 degrees. If the work is carried out in hot weather, then gluing must be done in a much shorter time, which will eliminate the possibility of the composition drying out before the manipulations are completed. Before connecting polypropylene pipes using the described technology, it is necessary to make sure that the adhesive has a uniform consistency, sufficient fluidity and does not have foreign inclusions.

During breaks between work, the container with the adhesive composition must be closed as tightly as possible, which will prevent the evaporation of volatile active components.

Pipe connection technology using fittings and glue

If you decide to use the cold connection method, then you need to use the technology described below. At the first stage, you need to cut off a part of the pipe so that you can get an element of the required length. For which it is recommended to use a pipe cutter, special scissors or a hacksaw for metal, the latter of which has fairly small teeth.

If you are thinking about the question of how to properly connect polypropylene pipes, then at the next stage a chamfer is removed at the end of the product, while it is important to observe an angle of 15 degrees. In the process of carrying out these manipulations, a beveler is used, it is important to exclude the formation of burrs. The next step will be a thorough cleaning of the fitting socket, as well as the pipe from dust, dirt and moisture.

In order to achieve effective cleaning of the connected elements, it is necessary to use cleaners intended for pipes made of CPVC. With the help of this composition, it will be possible to prepare the surfaces well enough for further gluing.

The nuances of the work

If you are faced with the task of how to connect polypropylene pipes without a soldering iron, then at the next stage you can apply glue. In this case, you need to use a brush, carefully distributing the composition over the surface of the socket and pipe. Elements are inserted into each other, for uniform distribution composition, you need to rotate the fitting 90 degrees relative to the pipe. The parts are fixed for 30 seconds, during which you should not re-rotate. It is important to complete the entire process within 1 minute. If you are thinking about how to connect polypropylene pipes without soldering, then after gluing, you need to check for the presence of a roller, which is a uniform adhesive layer located around the circumference. You may need to get rid of excess glue using a soft cloth.

Why you should use the cold method of connecting plastic pipes

Before connecting polypropylene pipes with fittings, you need to weigh all the positive negative sides other technologies. If we are talking about the adhesive joint, which was described above, it is worth highlighting the advantages, which consist in the possibility of high-quality pipe installation even in those places that are especially difficult to access. The master does not have to use additional expensive equipment that can consume a large amount of electricity during operation. The whole process can be carried out independently, without resorting to the help of professional companies. In the process of gluing parts, a structure is formed monolithic type, which ensures the tightness of the joint. If you decide to use adhesive cold welding, then, unlike the usual one, there will be no sagging on the inner surface of the product that can narrow the gap and contribute to the settling of solid particles.

Conclusion

If you observe the connection of polypropylene pipes to each other, observing the simple rules and recommendations described above, then leaks and sagging of the pipeline will be excluded. The service life of the pipeline, mounted according to a similar technique, can reach 50 years.

Soldering polypropylene pipes is an operation that sometimes has to be done in own house with your own hands. It is not at all advisable to buy a welding machine specifically for this. Therefore, many are trying to find such instructions, such methods that would save them from an expensive purchase. Today we intend to offer a method that is quite applicable at home and does not require any special equipment at all.

You can get the maximum information about polypropylene pipes and how to weld them.

Do-it-yourself soldering of small-diameter propylene pipes

We will talk about such pipes, which are most often used for wiring inside the house, i.e. about pipes with a diameter of 20 mm. Suppose we need to solder a pipe and an angle fitting adjacent to it.

Soldering propylene pipes of this diameter can be easily done if there is some kind of safe source of fire at hand, which, for example, can be such a miniature gas burner.

According to existing regulations and to ensure required quality connection, the pipe must protrude into the fitting by 14 mm. In order to avoid violation of this standard, it is advisable to measure this distance from the edge of the pipe in advance and put a mark with a pencil.

Having done this, you can proceed to the deep heating of the elements to be soldered. The fitting, of course, must be warmed up from the inside.

The end of the pipe is heated from the outside.

When both parts are well heated, they can be inserted into each other.

When inserting the pipe, you should be guided by the previously applied pencil mark, which should be exactly along the edge of the fitting.

After that, the completed connection should be cooled without exposing it to any external influences. The cooled soldering point will be very strong and in no way inferior in strength to those joints that are usually made using special welding machines,. This can be verified by cutting the just completed soldering site.

As can be seen in the photo above, the junction of the pipe and fitting is completely monolithic, and such a pipe can be included without the slightest fear in the home water supply system.

So, if you need to solder polypropylene pipes, you can easily do this work on your own, without purchasing any special tools. To do this, just take note of our recommendation.

Methods for connecting plastic pipes
Polypropylene products
Docking of pipes made of metal-plastic
Compression fittings for water pipes
Connection of polyethylene pipes
How to connect PVC pipes

To perform your own plumbing installation plastic pipes, you do not need a lot of knowledge and experience, since this process is not difficult. However, in order to improve the quality of the work performed, it is necessary to familiarize yourself with the technology and some of the nuances of connecting this type of pipe elements. It is also important to learn a few lessons about how to connect different types plastic pipe and the highlights of this process.

Methods for connecting plastic pipes

First, it is worth noting that plastic pipes include products from the following materials:

Polypropylene.
Metal-plastic.
Polyethylene.
Polyvinyl chloride.

Each material has certain properties, therefore, the connection of products is carried out different ways, including soldering polypropylene pipes without a soldering iron (read also: "How to connect polypropylene pipes - an overview of proven docking methods"). For greater awareness, it is worth learning how to connect water pipes from these materials.

Polypropylene products

Polypropylene pipe is the most popular material for plumbing. This is due to the presence of some advantages: acceptable price, high strength and long service life. Therefore, the study of methods for connecting all types of plastic pipes should begin with this type.

Polypropylene pipes are connected by welding with the obligatory use of couplings, angles, tees and other fittings. When connecting polypropylene pipes for plumbing, you need to purchase pipes and fittings from the same manufacturer. Otherwise, even strict adherence to welding technology cannot guarantee complete tightness and quality.

To connect polypropylene water pipes with your own hands, you need to have the following tools at hand:

Special soldering iron.
This is simply the name of a welding device with a set of special nozzles that allow you to connect pipes of various sections. At the same time, the nozzle is selected individually for each pipe in accordance with its cross section.
Cleanup. This tool cuts off the reinforcing layer at the ends of the pipes. Stripping is used only for multilayer reinforced tubular products.
Pipe cutter. By name, you can determine that the device helps to cut polypropylene pipes.
A tape measure, pencil or marker may also be needed in the process of joining polypropylene tubular products.

Installation of a water supply system from polypropylene pipes is carried out as follows:

Turn on and warm up the welding machine. The device must go through three phases: heating to a certain temperature, switching off, reheating. The mode of operation can be tracked by the light indicator (read also: "Types of PVC pipe welding, advantages and disadvantages of methods").
During the heating of the soldering iron, the reinforcing layer is stripped in the place where the fitting will be welded.
Dust and dirt are cleaned from the surface of the connected elements and wet places are wiped well. Please note that failure to follow these steps may result in a loose connection.
The end of one pipe and the connecting element are inserted into the heating nozzle and kept for a certain period of time. The heating time must be strictly controlled, since long holding leads to deformation of the elements, and if the heating is insufficient, the strength of the connection of plastic water pipes is reduced. Therefore, each welding machine is accompanied by a special table, which indicates the heating time for parts with a certain diameter.
The heated elements are pulled out of the nozzles and quickly connected. The strength of the connection also depends on the speed of action at this stage, so the process must be carried out quickly, but carefully. The pipe is inserted into the fitting until it stops, but it must not be deformed. The connected parts should be held until the plastic has completely cooled.
In a similar way, all elements of the water supply are connected. To avoid damage to the material, you need to perform actions on unnecessary pipe cuts. The process of welding polypropylene pipes is quite complicated, but after a few trial steps, you can start working on your own.

Docking of pipes made of metal-plastic

Compound metal-plastic pipes You can also make handmade products using one of three methods:

Connection using compression fittings involves the following steps: the end of the pipe is put on the collet, secured with a compression ring and squeezed with a clamping nut.
The connection with crimp type fittings involves compressing the ring at the end of the fitting with a special press.
Docking with push fittings is a new connection method that does not require any tools.
This method may be the answer to the question of how to connect plastic pipes without soldering.

Regardless of the chosen method of connecting metal-plastic pipes, tools are still worth preparing. In particular, you will need a pipe cutter, which can be replaced with a conventional mounting knife, and a calibrator, which can be any cylindrical object of a certain diameter.

The most popular is the connection of metal-plastic pipes using compression fittings, which involves the following steps:

First, the pipes are cut with a knife or pipe cutter, ensuring a right angle of the cut line.
Before connecting the pipes, the cut ends are processed, that is, the diameter is calibrated and chamfered, using a calibrator in both cases.
A nut is removed from the fitting and put on the end of the pipe, followed by a compression ring.
Now the collet is inserted into the end of the pipe, after checking for the presence of rubber o-rings.
Push the clamping ring onto the collet and tighten the nut on the fitting. In this case, do not allow strong tightening of the nut, as this leads to damage rubber seals(read also: “What and how to connect pvc pipes – best ways connections").

In a similar way, connect all the elements of the water supply system. Such an installation is characterized by one advantage: minimum set tools for work, which is at hand for any owner. In addition, this is the only option that allows you to get a detachable connection, which is necessary in some situations.

Compression fittings for water pipes

The connection with compression fittings is carried out in the same order, only the compression ring and nut are replaced with a compression ring. To squeeze it, a manual or electric press is used.

Push fittings make it possible to get a connection of metal-plastic pipes much faster than previous methods. To perform the work, it is enough to insert the prepared end of the pipe into connecting piece, and all actions are performed without much effort.

When water is supplied to the assembled system, the wedge of the fitting is pushed out and clamped, which prevents water leakage. This method does not require special tools or keys, and the installation itself is several times faster. See also: "How to install plastic pipes - basic installation rules."

Push fittings can be used to connect pipes made of metal-plastic and cross-linked polyethylene.

The connection by any of the listed methods is tight and reliable, so you need to choose depending on the available tools and financial capabilities.

Connection of polyethylene pipes

Polyethylene pipes can be connected using one of the following options:

With compression fittings.
Welding by electrofusion.

Compound compression fittings performed by analogy with metal-plastic pipes, but in a certain sequence:

The pipe is cut and chamfered.
A clamp nut is put on the pipe.
It is followed by a collet.
Next, in turn, put on the thrust and sealing ring.
The pipe is inserted into the fitting body, all parts are shifted to the edge and the nut is tightened.

This method is most often used when assembling domestic irrigation systems in country houses or in a summer cottage.

The connection of metal-plastic pipes in household water pipes is carried out by welding with an electrofusion coupling. Therefore, to perform the work, it is necessary to have a special welding device and an electric coupling having a diameter in accordance with the cross section of the elements to be connected.

The welding procedure involves the following steps:

Preparation of the surface of the connected elements. To do this, remove with a special scraper upper layer pipe products and degrease the cleaned place.
The ends of the elements to be connected are inserted into the electric coupling, while the joint should be located exactly in its middle.
The electrical coupling is connected to welding machine and the spirals inside it begin to heat up. As a result, polyethylene begins to melt and welding of the edges of the pipe elements occurs.

The device for this type of welding has a very high price, therefore, if it is not intended to be used further, it is better to rent the device for a few days than to spend a large amount for its one-time use.

How to connect PVC pipes

Pipe products made of polyvinyl chloride are connected using a special adhesive composition. However, it is very difficult to call it glue, since when the surfaces to be joined are treated with this substance, the plastic is melted, and the edges are welded, not glued. In other words, pipes are soldered without a soldering iron.

The process of connecting pipes of their polyvinyl chloride is as follows:

First, the edges of the pipes to be joined are cleaned of dust and dirt and dried well.
Then the chamfer is removed from the ends. This action must be performed without fail so that the adhesive does not scrape off when connecting the elements.
then one end of the pipe is inserted into the fitting to measure its depth. Make an appropriate mark on the pipe with a pencil or marker.
The end of the pipe is treated with an adhesive to the mark using a brush. In this case, we should not forget that you can not leave glue on the surface for more than 25 seconds.
The elements are connected and rotated slightly to evenly distribute the composition over the entire surface. The glue should dry naturally without any external influences. The drying time of the adhesive composition can be affected by air temperature and other factors.

Based on all of the above, we can conclude that in most cases, the connection of plastic pipes can be done by hand, without special devices at hand and without special knowledge and skills. The main condition is strict adherence to technology. It is also important to listen to the advice of professionals. This will help to complete the installation of water supply without unnecessary material costs.

A significant increase in the replacement of obsolete water supply networks has led to the emergence of a leading material such as polypropylene pipes. Therefore, today we will talk about how to do this work, what are the advantages of communications from such material.

Advantages of polypropylene pipes and their scope

First of all, you need to know, thanks to what qualities polypropylene pipes could so quickly become the most popular material for laying water supply and heating systems.

Advantages of polypropylene pipes:

Polypropylene pipes are highly resistant to corrosion processes. In addition, deposits do not occur on the inner walls of the pipes. mineral salts, due to this, during the entire period of operation, the section of the line does not change.
Guaranteed service life of pipes is 50 years (subject to operating conditions, temperature and pressure).
Polypropylene pipes can be operated at liquid pressure up to 25 atmospheres, working temperature is 95, and the maximum allowable (for a short time) reaches 110 degrees.
This material is sufficiently resistant to various chemicals.
An important, and in some cases the main role is played by the relatively low price and ease of installation of lines made of polypropylene pipes.

The scope of such pipes is quite wide, they are used for laying the following highways:

A prerequisite that allows the use of polypropylene in these areas is the exact observance of the soldering (welding) technology, and for this you need to know how to solder plastic pipes correctly, what tool is used for this.

Soldering tool for polypropylene pipes

First of all, you should decide on the choice of tool that is used for soldering polypropylene pipes. To perform work at the household level, it is quite enough to purchase an inexpensive minimum set of equipment, which includes:

Welding machine (soldering iron). The main task of this tool is to heat the surfaces of the elements to be joined to a temperature of 260 degrees.. It is under such conditions that the process of diffusion welding is possible, as a result of which a permanent connection is obtained, which in its properties is not inferior to the material of the main pipe.

Before choosing a soldering iron for plastic pipes, it is necessary to determine the main scope of its application. For domestic use models with a power of 900-1200 W are quite enough, for professional purposes it is worth purchasing more powerful equipment, the cost of which is much more expensive.

When choosing, pay attention to the following design features tool:

It is these design features of the soldering iron that will determine the convenience of working with it and its durability.

Nozzles for soldering pipes. Inexpensive tool kits usually include 3-4 nozzles for working with pipes of various diameters. If necessary, these nozzles are purchased separately. The main feature of such elements is the quality non-stick coating. Usually Teflon is used for these purposes, a higher-quality layer of this material is used on professional tools, which practically prevents sticking of polypropylene during the soldering process.

For cutting polypropylene pipes, special scissors for plastic are used. They are characterized by a reinforced design that allows you to cut even reinforced pipes. Such a tool is in any minimum kit for soldering polypropylene pipes.

To work with reinforced pipes, you also need a device that allows you to chamfer the workpiece along with a layer of aluminum foil. Soldering reinforced pipes without removing this layer is not possible. Of course, you can remove the reinforcement with a simple knife, but with such a device the operation is faster and better. Unfortunately, most tool kits do not have such a device, so you need to take care of purchasing it separately.

Rules for soldering polypropylene pipes

Before soldering plastic pipes made of polypropylene, a number of preparatory operations must be performed:

In general, the procedure for soldering polypropylene pipes is not complicated. The main thing is to observe the dimensions and withstand the heat treatment time. Then the resulting joint will last long enough.

When arranging communication systems, it is necessary to dock individual elements, however, this process can be done in quite different ways. The connection of plastic pipes without soldering deserves special attention, because in this case it is possible to do without the use of a special apparatus, the price of which is quite high.

Docking with fittings

With this option, a set of shaped parts is used, which makes it possible to combine not only two, but also more elements. Every developer who does not have a soldering machine wants to learn how to connect plastic pipes in this way.

Advantages of the method

The low cost of fittings allows you to reduce the cost of summing up communications.
Ease of installation makes it possible to dock even non-professionals.
The possibility of using parts in pressurized systems expands the scope.

Note! It must be taken into account that this way applicable for elements with a small diameter, and in other situations, it is docking with thermal action that is more often used.

Carrying out work

It's time to understand how plastic pipes are connected directly by compression fittings. Of the tools you will need: a sharp knife for cutting elements, a calibrator, as well as manual or automatic pliers for the clamping operation.

Cutting is done first constituent parts communication system, if required in a particular case. The cut must be made strictly perpendicular so that bevels and other flaws do not form. After that, with the help of a calibrator, the ovality at the joint is eliminated.

Next, a special coupling is thrown on, and the fitting itself is inserted into the pipe with O-rings. From above, crimping is carried out with cooked tongs. Thus, it is possible to join the plastic elements.

However, in some cases, you need to know how to connect a plastic pipe to a cast iron one. For this, a special adapter is used, the diameter of the sides of which corresponds to the dimensions of the pipes used. In the process of docking, it must be remembered that the coefficients of linear expansion of plastic and cast iron are noticeably different.

Bonding individual elements

In addition to the above option, there are other ways to connect plastic pipes. One of these is the gluing process, when the ends of the components are joined using a special chemical composition. In the course of work, it is possible to ensure sufficient tightness.

The principle of operation of the composition

Glue designed for plastic products, usually contains polyvinyl chloride, which dissolves in methyl ethyl ketone, tetrahydrofuran and cyclohexanone. Special additives that improve adhesion are also added to two-component formulations.

Advantages of the adhesive method

Quality grip chemical agent with the surfaces of the elements allows you to get high tightness.
Availability the main material makes it possible to apply it to a wide range of consumers.
Invisibility of the joint positively affects the aesthetic perception of the components of the communication system.

Attention! The adhesive used must be stored away from an open flame, as it ignites easily. In addition, during work it is necessary to protect the skin from contact with the substance.

Application of the composition

You can carry out gluing with your own hands. Work should be carried out at temperatures from +5 to +35 degrees. In advance, you need to prepare a brush with natural bristles. In most cases, it comes directly with the adhesive.

Before starting the main steps, it is desirable to assemble the structure without the use of a chemical agent in order to perform a preliminary fitting. Before applying the substance, the surface must be degreased using solvents.

A thin layer of adhesive is applied to the prepared surfaces. The plastic product is inserted into the hole until it stops, while avoiding rotation or other manipulations. Within 15-20 seconds, the components are held so that the adhesive has time to dry.

Socket corral

The presented method is applicable mainly for, since pressure is not created in them. At the ends of the elements used there are special connections for plastic pipes - sockets. With their help, the fixation itself is made.

Positive aspects of technology

Relatively high assembly speed guarantees installation in the shortest possible time.
Eliminating the need to purchase additional components reduces costs.
Possibility of implementation self assembly allows you to refuse professional help.

Important! For non-pressure systems, this option can be considered quite tight, because when installed, a rubber gasket is inserted inside, which at the same time makes it possible to compensate for the mismatch of the connected parts.

Description of the build process

After making sure before installation that there is a rubber ring in the socket, you need to clean it from various pollution then it will be possible to achieve good adhesion. To a smooth edge