Polypropylene pipes in a cold water supply system will last 50 years, and in pipelines hot water– at least 25 years. How to connect polypropylene pipes to each other or to a metal pipeline? You will find the answer to these questions in our article. Do not forget that if you are planning to replace hot or cold water supply pipes yourself, you must not only choose a joining method, but also stock up on the necessary tools.

Connection methods

1. Butt welding.
2. Socket connection.
3. With the use of fittings.

When choosing a connection method, you must remember that welded pipelines cannot be dismantled.

Butt welding

To connect pipes with a diameter of more than 50 mm, the butt welding method is used. In this case, a professional welding machine.

How to properly connect polypropylene pipes with a diameter of less than 50 mm? A tool is used - a soldering iron to connect plastic pipes (the so-called “iron”).

Technological process for ironing:

• Preparation of pipes - cutting to size, cleaning the ends, marking the immersion depth using a marker.
• Heating the soldering iron to soldering temperature – 260-270 o C.
• Pipes and connecting parts are placed on the soldering iron nozzles strictly perpendicularly.
• Time delay for melt.

Warming up parts on a soldering iron

• Elements and pipes are removed from the nozzles and connected to each other with light squeezing, without twisting. It must be taken into account that the size of the seam depends on the compression force. When soldering small-diameter pipes, it is important that the weld bump does not block the internal passage of the pipe. You should also avoid excessive heat, which significantly degrades the quality of the seam.

In order to “catch” the holding time and the compression force, you need to practice on pipe scraps, this will allow you to avoid defects when carrying out basic work.

• Delay time for cooling.

Socket connection

For joining pipes with a diameter of less than 40 mm, socket soldering is used. For connection, a welding machine with special nozzles and a centering device is used.

Stages of work:

• cutting the pipe using special scissors;
• cleaning the ends;
• heating the device to the required temperature;
• welding (the operation must be performed quickly to avoid deformation);
• fixation of elements, eliminating mechanical loads.

The quality of each compound must be checked immediately after cooling.

The socket connection can also be made cold using glue. With this type of connection, it is necessary to perform a preliminary “trying” - checking how the pipe fits into the fitting. If the fit is too loose, the connection will not be sealed, and if it is too tight, the pipe will move the adhesive layer when inserted. During preliminary adjustment, you need to mark the parts to be connected with a single line.

Carrying out the work step by step:

• cut;
• stripping;
• degreasing with a cleaner;
• applying glue (on the outside of the pipe liberally, on the inside of the connecting element thin layer);
• connection (the pipe is rotated when inserted into the fitting to distribute the glue evenly);
• removing excess glue;
• waiting time for the glue to harden.

Using fittings

Another “cold” joining method is using fittings. The tool is a crimp wrench that comes with the fittings.

Joining plastic and metal pipes

You can connect polypropylene pipes to metal ones using fittings. This type of connection allows you to connect heating devices, water supply equipment, and switch to pipes of other diameters or from other materials.

Types of fittings:

• press fittings;
• crimping;
• push fittings.

When working with pipes with a diameter of more than 40 mm, the threaded connection is placed on the metal part of the pipeline.

Compound polypropylene pipes with metal ones using special adapters greatly simplifies the work.

Connect metal-plastic pipe with polypropylene you can use a compression fitting.

After connecting pipes and fittings, it is necessary to check the pipeline for leaks. Water is supplied to the system and each connection is checked for leaks. If necessary, seal the joints or tighten them threaded connections. In the case of hot water supply, check the system by supplying hot water.

Polymer parts can be connected not only using heating elements. But what about without soldering? to connect them is not always used. The presence of other types of connections besides soldering is one of them characteristic features. The absence of the need to purchase welding equipment in one way or another makes this type of welding even more popular and accessible, since few people know how to solder or how to weld pipes. Also distinctive feature is connectivity plastic pipes with your own hands without special equipment. How to connect plastic pipes without soldering?

There are two ways to connect polypropylene, polyethylene and other polymer materials without the use of special welding equipment: welding plastic pipes using compression fittings and cold welding.

The only thing you will need besides compression fittings for the first type of welding is a special crimp wrench. They are usually sold together. For cold welding you only need special glue. The last type of connection without soldering is most often applicable only for cold water supply. The disadvantage of joining parts without soldering is that it takes more time. Next, each type will be examined in more detail and the answers to the questions of how to connect polypropylene pipes without soldering and how to solder polypropylene pipes on your own will be presented.

Connection using compression fittings

You can solder plastic parts using compression fittings. They are applicable not only to the corresponding type of pipe. As a rule, fittings made of a material different from the material of the elements being connected cannot be used. However, a feature of such fittings is their versatility, since they can be connected different pipes: aluminum with copper, with PVC and so on. Therefore, not every detail corresponds certain type fitting. Another advantage of this type of connection is that the structure can be either assembled or disassembled. If you have soldered two parts, it will no longer be possible to separate them as before.

The fitting design consists of the following elements: those that are installed at the end of the pipe (for example, plugs) and those that combine the connected elements into a single whole.

The modern market has many fittings. Here are the main ones:

• Crimping (aka compression)
• Flanged
• Welded
• Threaded

The compression fitting is a housing that is not affected by ultraviolet radiation. This housing contains a press-fit sleeve and a cover. The body material contains an O-ring that facilitates a tight seal, a clamping ring, and a thrust ring (sometimes these two rings are combined into one). In case of disassembly/assembly of parts, the sealing ring must be replaced with a new one. These fittings are used for products made of polyethylene low pressure(PE 100, PE 80, PE 40), and low-density polyethylene. In addition to UV resistance, compression fittings are also characterized by their resistance to chemicals aggressive influence. The scope of application of connections using compression fittings is typical for low-rise buildings, in street water supply systems in villages and towns, and greenhouses. In this regard, it is worth noting again the peculiarity of this type of connection, namely the possibility of disassembling the pipeline in one place in order to move it to a new location.

When working with fittings, be sure to first read the instructions and strictly follow its provisions, as well as the rules set forth below. Before work, you need to familiarize yourself with the quality of the pipes, their sizes and their compliance with the fittings. There are maximum permissible limits for deviations from the norm when connecting: the diameter cannot deviate from the nominal value by more than 1%, and the oval section cannot be more than 2%. If these limits are violated, then it is better to lay the pipeline in a horizontal position. The pipeline is connected manually if the diameter is less than 50 mm; if more, then a special key is needed. Connecting plastic pipes without soldering must be carried out in compliance with the requirements for thorough cleaning of parts from dirt and burrs, and cleaning so that the edges are smooth and free of defects. For pruning, special scissors are used. Mark the required insert length on the product using a marker.

The connection speed is quite fast. The nut is placed on one end of the pipe, the clamp ring is installed, after which the pipe is inserted into the fitting. The ring should reach the stop. Finally, depending on the diameter of the pipeline, tighten the nut manually or using a key.

As a result, we get a ready-made connection of plastic pipes without soldering.

Main advantages compression fittings:

• Structural strength
• Durability of the design
• Simplicity and speed of assembly
• No susceptibility to corrosion
• Versatility
• The ability to connect plastic pipes with your own hands without welding equipment

How to solder polypropylene pipes without a soldering iron using cold welding or adhesive bonding

Cold welding of plastic pipes is the process of joining parts without heating them. You can solder plastic elements by using a special glue that hardens quickly. The adhesive composition usually consists of epoxy resin and hardener. Cold welding has black or white colors. It is usually used for cold water supply. But some glues are also used for hot glue. This must be indicated separately on the packaging.

What kind of adhesive mass is there:

• Fluid mixtures (the package should contain two tubes: one with a hardener, the second with an elastic substance; for example: if you are going to repair a hole in a polymer product, then the contents of the tubes must be combined immediately before starting work (a kind of repair); you must definitely use a mixture for no more than 20 minutes, otherwise it will become hard).
• Plastic mass (represents a bar consisting of two layers: a hardener on top, and a plastic component inside; resembles plasticine).

Most professionals advise using the cold welding method for a specific list of materials, which is provided in the instructions.

Polymer parts can be connected not only using heating elements. But how to connect polypropylene pipes without soldering? Soldering polypropylene pipes to connect them is not always used. The presence of other types of connections besides soldering is one of their characteristic features. The absence of the need to purchase welding equipment in one way or another makes this type of welding even more popular and accessible, since few people know how to solder or how to weld pipes. Another distinctive feature is the ability to connect plastic pipes with your own hands without special equipment. How to connect plastic pipes without soldering?

There are two ways to join polypropylene, polyethylene and other polymer materials without the use of special welding equipment: welding plastic pipes using compression fittings and cold welding.

The only thing you will need besides compression fittings for the first type of welding is a special crimp wrench. They are usually sold together. For cold welding you only need special glue. The last type of connection without soldering is most often applicable only for cold water supply. The disadvantage of joining parts without soldering is that it takes more time. Next, each type will be examined in more detail and the answers to the questions of how to connect polypropylene pipes without soldering and how to solder polypropylene pipes on your own will be presented.

Connection using compression fittings

You can solder plastic parts using compression fittings. They are applicable not only to the corresponding type of pipe. As a rule, fittings made of a material different from the material of the elements being connected cannot be used. However, the peculiarity of such fittings is their versatility, since different pipes can be connected: aluminum with copper, low-density polyethylene with PVC, and so on. Therefore, not every part corresponds to a certain type of fitting. Another advantage of this type of connection is that the structure can be either assembled or disassembled. If you have soldered two parts, it will no longer be possible to separate them as before.

The fitting design consists of the following elements: those that are installed at the end of the pipe (for example, plugs) and those that combine the connected elements into a single whole.

The modern market has many fittings. Here are the main ones:

• Crimping (aka compression)
• Flanged
• Welded
• Threaded

The compression fitting is a housing that is not affected by ultraviolet radiation. This housing contains a press-fit sleeve and a cover. The body material contains an O-ring that facilitates a tight seal, a clamping ring, and a thrust ring (sometimes these two rings are combined into one). In case of disassembly/assembly of parts, the sealing ring must be replaced with a new one. These fittings are used for products made of low-density polyethylene (PE 100, PE 80, PE 40), and low-density polyethylene. In addition to UV resistance, compression fittings are also characterized by resistance to aggressive chemicals. The scope of application of connections using compression fittings is typical for low-rise buildings, in street water supply systems in villages and towns, and greenhouses. In this regard, it is worth noting again the peculiarity of this type of connection, namely the possibility of disassembling the pipeline in one place in order to move it to a new location.

When working with fittings, be sure to first read the instructions and strictly follow its provisions, as well as the rules set forth below. Before work, you need to familiarize yourself with the quality of the pipes, their sizes and their compliance with the fittings. There are maximum permissible limits for deviations from the norm when connecting: the diameter cannot deviate from the nominal value by more than 1%, and the oval section cannot be more than 2%. If these limits are violated, then it is better to lay the pipeline in a horizontal position. The pipeline is connected manually if the diameter is less than 50 mm; if more, then a special key is needed. Connecting plastic pipes without soldering must be carried out in compliance with the requirements for thorough cleaning of parts from dirt and burrs, and cleaning so that the edges are smooth and free of defects. For pruning, special scissors are used. Mark the required insert length on the product using a marker.

The connection speed is quite fast. The nut is placed on one end of the pipe, the clamp ring is installed, after which the pipe is inserted into the fitting. The ring should reach the stop. Finally, depending on the diameter of the pipeline, tighten the nut manually or using a wrench.

As a result, we get a ready-made connection of plastic pipes without soldering.

The main advantages of compression fittings:

• Structural strength
• Durability of the design
• Simplicity and speed of assembly
• No susceptibility to corrosion
• Versatility
• The ability to connect plastic pipes with your own hands without welding equipment

How to solder polypropylene pipes without a soldering iron using cold welding or adhesive bonding

Cold welding of plastic pipes is the process of joining parts without heating them. You can solder plastic elements by using a special glue that hardens quickly. The composition of the adhesive usually consists of epoxy resin and hardener. Cold welding has black or white colors. It is usually used for cold water supply. But some glues are also used for hot glue. This must be indicated separately on the packaging.

What kind of adhesive mass is there:

• Fluid mixtures (the package should contain two tubes: one with a hardener, the second with an elastic substance; for example: if you are going to repair a hole in a polymer product, then the contents of the tubes must be combined immediately before starting work (a kind of repair); you must definitely use a mixture for no more than 20 minutes, otherwise it will become hard).
• Plastic mass (represents a bar consisting of two layers: a hardener on top, and a plastic component inside; resembles plasticine).

Most professionals advise using the cold welding method for a specific list of materials, which is provided in the instructions.

The packaging also indicates the maximum permissible temperature value for a particular mixture (usually about 260 degrees). If you strictly follow the operating rules, the seam will be durable, strong and airtight. There is glue for high temperatures water (about 1300 degrees).

Thus, soldering polypropylene pipes is not the only way to connect polymers. It is possible to connect plastic pipes with your own hands without using a welding machine. Do-it-yourself polypropylene pipes can be connected by cold welding or using compression fittings. Connecting polypropylene pipes without a soldering iron using fittings has features, among which the most important is the ability to assemble and disassemble structures.

svarkaed.ru

How to solder polypropylene pipes when you don’t have a soldering iron at hand

Metal pipes, which were standard in the past, are today increasingly being replaced by plastic ones, or more precisely, polypropylene (as well as PVC). And if a welding machine is usually used to install the former, then the polymer analogues are mounted using a special soldering iron. However, the latter may not be at hand at the moment when it is necessary to solder one of these pipes. Is there a way out of this situation? Actually yes. In addition, here we will look at soldering wires.

In what situations may soldering be necessary?

• Installation of water supply, drainage and heating systems;
• Repair work on heating and water supply systems;
• The need to connect two wires;
• Repairing the awning - sealing the holes.

Is there an alternative to a professional soldering iron for polypropylene pipes?

Before we sort out the soldering of wires and awnings, let's focus on the pipes. The machine for welding them costs several thousand rubles. Mostly professionals buy it for themselves, but for ordinary person this device It just won't pay off. In this regard, we have to look for Alternative option, which may become much more common in ordinary homes gas-burner.

This burner performs well both in repair and installation. At the same time, it can solder both small-diameter pipes and fairly large analogues. It is used not only for connecting pipes, but also as a means of installing plastic taps to control the flow of water into the pipeline.

Tips for joining polypropylene pipes without a soldering iron

• The quality of the connection largely depends on the cleanliness and absence of grease on the pipes themselves. Therefore, before work, it is recommended to degrease and clean them from dirt;
• All pipes, as well as fittings and other parts must be from the same manufacturer. This way you will be sure that the same temperature effect must be applied to connect them. In addition, you should not skimp on quality. Its absence may appear both during the soldering process and during subsequent operation;
• Do not solder in cold conditions. If, for some reason, the room temperature has dropped by less than +5 degrees, the connection may be fragile;
• It is recommended to practice on unnecessary sections of pipe.

Alternative – PVC pipes

There are plastic pipes that do not require soldering, since they can be glued together. In addition, they have all-plastic pipe threads located on the internal and external sides.

In addition, there is a special solvent-based cement for PVC and CPVC pipes. After treatment with this cement, the surface becomes soft and can be quickly glued together.

The procedure for soldering polypropylene pipes

• Compilation detailed diagram, marking of turning points, location of taps, corners and other elements of the system;
• Pipe cutting. It is best to take with a margin of 25 millimeters, which will be fused onto the fitting;
• The pipe and burner are heated using a fitting. The temperature is approximately 280 degrees Celsius;
• The fused elements are held together until they cool.

A universal method of soldering an awning

With the arrival of the warm season, the need for awnings increases. By putting it on your house plot or taking a small tent for a picnic, you may find an unpleasant surprise - a hole. Is it worth buying a new awning after this or can I somehow correct the situation?

For soldering, we need a construction hair dryer, which will have a special crevice nozzle, as well as a patch with a roller. After preliminary cleaning the damaged area and patching it from dust and grease, it is necessary to place the awning on flat surface. Having attached the patch to it, we begin to heat both surfaces using a crevice nozzle, simultaneously securing it with a roller. The better you heat the surfaces, the better they will stick to each other. But here it is extremely important not to overdo it and not burn a hole.

Soldering wires without a soldering iron using soldering tape

Despite the fact that a regular soldering iron is found in our homes much more often than its counterpart for plastic pipes, it still may not be at hand at the right time when you need to connect two wires. Of course, you can try to twist them and wrap them with “blue electrical tape,” but this option is only temporary. At the same time, you can connect wires “forever” without a soldering iron.

A special soldering tape will help us with this, which allows us to create a durable polymer layer around the wire, providing a complete connection and insulation problem area. The stages of working with this tape are as follows:

• Stripping the wires that we will connect and their subsequent twisting;
• Removing the protective layer from the tape and wrapping it around the twisting area;
• Heating the tape with an open flame until it melts and evenly covers the problem area. Regular matches are suitable for this;
• After the tape has cooled, remove excess flux. The wire is fully connected and ready for further use.

Welding wires using special paste

Paste is used to connect various metals such as steel, nickel, copper and others. The reason for this versatility is that this material is produced on the basis of silver. In general, the paste contains flux, solder and binding components crushed to a powder state. In the vast majority of cases, this method is used for soldering small wires. So, if your favorite headphones are out of order, and you don’t have a soldering iron at hand, then ideal solution it will become just paste. The way to use it is extremely simple:

• We clean the wires and twist them together;
• Apply the paste to the twist area as evenly as possible;
• Using a regular lighter, the paste is heated until it melts and turns into a full-fledged solder;
• After this, it is necessary to insulate all exposed parts of the wire. The ideal means for this is a heat shrink sleeve. We put it on the joint, then heat it up and get reliable insulation.

bricknews.ru

How to connect polypropylene pipes without soldering?

Owners of private houses and apartments are often faced with the problem of pipeline restoration. Many of them decide to replace old products with polypropylene pipes. Even a person without special skills can install such a water supply system. However, first you need to figure out how to connect polypropylene pipes without soldering.

Cold connection of polypropylene pipes

General information

During the construction of private houses, polypropylene water pipes began to be installed more and more often. The popularity of such products is justified by their low cost, long service life, ease of installation and lack of rust. They are used to create water supply and heating systems. Three types of products are produced from polypropylene:

• copolymer;
• block copolymer;
• homopolymer.

The above products can be combined different ways. Many people use the connection of polypropylene pipes without soldering.

Advantages and disadvantages of solderless connections

This method has several serious advantages, because of which some people refuse to solder pipeline elements. These include:

• Small financial costs. During soldering, you have to use expensive equipment that is not available to everyone.
• Easy to install. It is much easier to install pipeline elements without soldering, since you do not have to use a soldering apparatus and monitor such parameters as pressure and soldering temperature of polypropylene pipes.
• Water pipeline restoration speed. If the products were soldered together and a serious breakthrough occurred, then recovery may take a long time. It will take time to wait for a specialist with the necessary equipment. This problem will disappear if you make connections in other ways.

However, connecting plastic pipes without soldering has one serious drawback - installation of the pipeline can take much longer.

Connection methods

Insertion into a polypropylene pipe without soldering is carried out different methods. The choice of method directly depends on the purpose of the pipeline, the size and type of elements used. The most common connection methods include:

• Use of flanges. This type of connection is quite reliable. The products are connected with bolts that are screwed into special holes in the flanges.
• Use of fittings. These products are made of cast iron or steel. They are used when working with small diameter pipes. The advantage of fittings is that they allow you to make transitions between parts of the pipeline and connect them at different angles.
• Use of couplings. To use them, threads are made on the pipes and wrapped with tow to make the connection more airtight.
• Gluing. This method cannot be used for water pipes with hot water. During installation, glue is used, which is applied to the parts.

Fitting

If the technology of soldering polypropylene pipes is not used, then they are connected using fittings. They are connecting elements that are most often installed at turns and branches of the pipeline. The fittings consist of a body, a cover, a sleeve and a clamping ring located in a special socket. They also have a folded ring with which the polypropylene pipe is fixed.

When installing a water supply system, it is necessary to use pipes that comply with all standards.”

The ovality of the cross-section of products should be within 1% -1.5% of the diameter. If fittings with a diameter of less than 50 mm are used during operation, installation is carried out manually.

Before connecting plastic pipes without soldering with fittings, you must follow the step-by-step instructions:

1. Pipe cutting. They must be cut at right angles.
2. Removing hangnails. The surface of the products that will be placed in the fittings must be perfectly flat.
3. Installing the nut. It is removed from the fitting and installed on the pipe, after which the clamping ring is put on it.
4. Pipe installation. It fits into the fitting all the way and is secured with a nut and a clamping ring.

Flanges

Flanges are used if you need to connect plastic pipes without soldering. This connection is very reliable, as it can withstand temperatures up to 650 degrees Celsius and cope with pressures up to 20-30 MPa. The diameter of the flanges reaches 3000 millimeters. During selection optimal size the pressure of the pipeline and the material of the products from which it will consist are taken into account.

Flange connection of PP pipes

Flanges are made of cast iron or steel. They can be:

• Cast. They are part of the fitting or pipe structure.
• Welded. It is made in the form of a washer, which will have to be attached to the structure yourself.

When using them, you must follow these recommendations:

• At the place where the pipeline elements will be connected, you need to make a special cut. At the same time, it must be done so that hangnails do not appear.
• A gasket is installed on the cut, which should protrude by 15 cm.
• The flange is attached to the gasket and connected to the flange that is installed on the second pipe.

Also, when performing such work, it is necessary to take into account the following nuances:

• You cannot install two or more gaskets on one flange, as this will make the connection less airtight;
• When installing the water supply system, it is recommended to use rag cardboard gaskets;
• the bolts should not protrude too much above the nuts;
• The gaskets must be installed in such a way that their outer cross-section does not touch the bolts.

Couplings

They are used during the creation of pressure and gravity pipeline. Connecting plastic pipes without soldering using couplings with your own hands is quite simple. To do this, just follow these rules:

• the edges of the joined elements are cut so that the cut is perfectly smooth;
• the place where the coupling will be installed is indicated by a marker;
• the coupling is coated with a special lubricant;
• Using a mark applied with a marker, the coupling is put on the pipe.

Connecting PP pipes with a coupling

Gluing

Connecting plastic pipes without soldering fittings can be done using glue. Before this, the surface of the products must be prepared. First you need to cut the product using special scissors and remove burrs with sandpaper. All fitting and gluing locations are marked with a marker. After this, you can begin gluing, which consists of the following steps:

1. Degreasing. Before using glue, you must use a cleaner and degrease all areas where it will be applied.
2. Applying glue. The adhesive should be applied in a thin layer to the areas where the fittings will be installed.
3. Pipe installation. They are installed all the way into the fittings. This must be done very carefully so that the parts do not wobble too much.
4. Drying. The glue will dry completely within 15-20 minutes. However, the pipeline only needs to be filled no earlier than every other day.

Gluing PP PVC pipes

Conclusion

Polypropylene pipes are connected in various ways. Having figured out how to connect polypropylene pipes with each other and with metal pipes, you can install the pipeline yourself.

How to connect a polypropylene pipe to a polypropylene pipe without soldering fittings? How to properly connect polypropylene pipes?

If there is a need to install plastic pipes, then most often they use the so-called cold welding. This technology involves the use of an adhesive composition special purpose and fittings.

Advantages of using pipe connections without hot soldering

If you are thinking about how to connect a polypropylene pipe to a polypropylene pipe, then you can use a method that involves the use of special fittings. This technique has many advantages, among them especially the increased efficiency of installation of drainage and water supply systems, and the reduction of the possibility of leaks that can occur during butt welding or during a chemical connection. Among other things, the described technology is less labor-intensive and also requires less energy consumption. Among other things, it is associated with lower material consumption. Installation work is quite cheap. Using fittings and glue, you can connect pipes of various diameters, 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 low material consumption, speed and quality of work performed, is not inferior to traditional welding. Similar technology gluing does not require the use of special equipment, which greatly simplifies manipulations. You don’t have to use a special machine designed for welding, which consumes quite an impressive amount of electricity during operation. Due to this, it is possible to reduce costs installation work. If you are faced with the task of how to connect a polypropylene pipe to a polypropylene pipe, then it is worth comparing the adhesive connection using fittings and mechanical mating 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 increases the cost of work.

Features of connection using fittings and glue

If you do not know how to connect a polypropylene pipe to a polypropylene pipe, then it is important to familiarize yourself with cold welding technology. To do this, you will need to use glue, which is intended for connecting pipes with parts such as fittings. The latter are most often made from chlorinated polyvinyl chloride. After application, the glue begins to dissolve the surfaces of the parts by 1/3 of the thickness. This makes it possible to implement diffusion cold welding. On this process affected by air temperature and humidity. Before connecting polypropylene pipes using cold welding and fittings, you must ensure that the temperature environment ranges from 5 to 35 degrees. If there is a need to carry out installation work at temperatures below zero, then you should purchase frost-resistant glue, which can be applied until the thermometer 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, you need to make sure that the glue has a uniform consistency, sufficient fluidity and does not have foreign inclusions.

During breaks between work, containers with adhesive composition it is necessary to close it as tightly as possible, which will prevent the evaporation of volatile active components.

Technology for connecting pipes 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 part of the pipe in such a way that you can obtain an element of the required length. For this purpose it is recommended to use a pipe cutter, special scissors or a hacksaw, the latter of which has fairly fine teeth.

If you are thinking about the question of how to properly connect polypropylene pipes, then next stage At the end of the product, a chamfer is removed, and it is important to maintain an angle of 15 degrees. In the process of carrying out these manipulations, a chamfer is used; it is important to prevent the formation of burrs. The next step is to thoroughly clean the fitting socket, as well as the pipe, from dust, dirt and moisture.

In order to achieve effective cleaning of the connecting elements, you need to use cleaners designed for pipes made of CPVC. With the help of this composition it will be possible to prepare the surfaces well enough for further gluing.

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. The elements are inserted into each other; to distribute the composition evenly, you need to rotate the fitting 90 degrees relative to the pipe. The parts are fixed for 30 seconds, during which time they should not be rotated again. 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 is completed you need to check the presence of a bead, which is a uniform adhesive layer, located around the circle. You may have to get rid of excess glue using a soft rag.

Why is it worth using the cold method of joining plastic pipes?

Before connecting polypropylene pipes with fittings, you need to weigh all the positive negative sides other technologies. If we're talking about about the adhesive connection, which was described above, it is worth highlighting the advantages that it is possible to carry out high-quality installation pipes even in places where access is particularly difficult. The master will not have to use additional expensive equipment that can consume during operation a large number of electricity. It is possible to carry out the entire process independently, without resorting to the help of professional companies. In the process of gluing parts, a monolithic type structure is formed, which ensures the tightness of the joint. If you decide to use adhesive cold welding, then, unlike conventional welding, inner surface the product will not form sagging, which can narrow the lumen and contribute to the settling of solid particles.

Conclusion

If you connect polypropylene pipes to each other, following the simple rules and recommendations described above, then leaks and sagging of the pipeline will be eliminated. Service life of a pipeline installed according to similar technique, can reach 50 years.

When creating modern utility networks Craftsmen are forced to solve the problem of how to connect plastic pipes for water supply. Connection technologies vary depending on the specific system type and other operating conditions.

Plastic has practically replaced cast iron and steel in the construction of communications. Polymer pipes do not require expensive equipment or specific qualifications of a craftsman to connect.

Connecting plastic water pipes with your own hands can be done using different technologies. Their choice depends on the purpose of the system, the type of polymer used and the dimensions of the pipe. The main types of connection are:

In general, it is possible to connect plastic pipes both without welding and with it, that is, installation can be carried out “hot” (welding) or “cold” method.

The most rational way to install a water supply system is. What are its advantages and features - read in a separate article.

How to organize water supply in a private house from a well is described.

Non-welding connection for various types of plastic pipes

Connecting plastic pipes without soldering can be done in various ways. The choice of specific technology depends on the type of polymer water supply:

1. Polyethylene pipes HDPE connected using . No specific equipment is required for installation; muscular effort or, in extreme cases, a crimp wrench is sufficient. This DIY installation of plastic pipes will be simple, but it will take some time, since each joint will need to be carefully crimped. In addition, this method is still less reliable compared to soldering.

Features of connecting plastic and metal pipes

Connecting plastic pipes with metal pipes is necessary in cases when repairing an old sewer or water supply system where steel or cast iron elements are present.

If plastic and cast iron pipes are joined in sewer system, then the installation of the joint is very simple, using special adapters, which are available in various sizes. But the methods that are traditionally used for joining cast iron pipes are not suitable in the case of plastic. In particular, due to embossing, the plastic pipe is deformed, and there will be no question of the reliability of the connection. The junction between polymer and cast iron pipe It is also inadvisable to seal it with cement - after all, plastic and cast iron expand differently due to heating - it will only be enough to fill the pipes with hot water a few times for the connection to lose its tightness and become unusable.

How to connect plastic water supply pipes with metal ones? Greater reliability will be required here, since plumbing system pressure is higher. In particular, if the water supply is created from pipes up to 4 cm in diameter, then the joint is created using an appropriate fitting. It will have a thread on the metal side, and a standard coupling on the plastic side.

Important: Do not forget to carefully seal the connection on the side metal pipe- suitable for this traditional materials and technologies, for example, linseed fibers impregnated with drying oil.

If we are talking about installing a pipeline with a diameter exceeding 40 mm, then for connecting metal and plastic parts It is advisable to use a flange connection. This greatly simplifies the installation process, especially since it will not be difficult to select the appropriate adapters.

And when pipelines are assembled from different materials, where the environment will be under high pressure, then it is worth using a metal hose. To attach such a part to a plastic part, you will need an appropriate fitting, and it is attached to metal with a threaded connection.

In this way, you can create the most reliable joint and switch from old metal structures to more practical and durable plastic ones. These methods are applicable for both heating and plumbing systems.

Do-it-yourself installation of plastic pipes: video

In this video section you can see how plastic pipes are connected without soldering into a socket.

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

Advantages of using pipe connections without hot soldering

If you are thinking about how to connect a polypropylene pipe to a polypropylene pipe, then you can use a method that involves the use of special fittings. This technique has many advantages, among them especially the increased efficiency of installation of drainage and water supply systems, and the reduction of the possibility of leaks that can occur during butt welding or during a chemical connection. Among other things, the described technology is less labor-intensive and also requires less energy consumption. Among other things, it is associated with lower material consumption. they are quite cheap. Using fittings and glue, you can connect pipes of various diameters, 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 low material consumption, speed and quality of work performed, is not inferior to traditional welding. This gluing technology does not require the use of special equipment, which greatly simplifies manipulations. You don’t have to use a special machine designed for welding, which consumes quite an impressive amount of electricity during operation. Due to this, it is possible to reduce the cost of installation work. If you are faced with the task of how to connect a polypropylene pipe to a polypropylene pipe, then it is worth comparing the mechanical mating of elements using fittings. The latter technology is not so energy-intensive, but more material-intensive. This is due to the need to purchase additional fittings, which increases the cost of work.

Features of connection using fittings and glue

If you do not know how to connect a polypropylene pipe to a polypropylene pipe, then it is important to familiarize yourself with the technology. To do this, you will need to use glue, which is intended for connecting pipes to parts such as fittings. The latter are most often made from chlorinated polyvinyl chloride. After application, the glue begins to dissolve the surfaces of the parts by 1/3 of the thickness. This makes it possible to implement diffusion cold welding. This process is affected by air temperature and humidity. Before connecting polypropylene pipes using cold welding and fittings, you must make sure that the ambient temperature is between 5 and 35 degrees. If there is a need to carry out installation work at temperatures below zero, then you should purchase frost-resistant glue, which can be applied until the thermometer 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, you need to make sure that the glue 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.

Technology for connecting pipes 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 part of the pipe in such a way that you can obtain an element of the required length. For this purpose it is recommended to use a pipe cutter, special scissors or a hacksaw, the latter of which has fairly fine teeth.

If you are thinking about the question of how to properly connect polypropylene pipes, then at the next stage the end of the product is chamfered, and it is important to maintain an angle of 15 degrees. In the process of carrying out these manipulations, a chamfer is used; it is important to prevent the formation of burrs. The next step is to thoroughly clean the fitting socket, as well as the pipe, from dust, dirt and moisture.

In order to achieve effective cleaning of the connecting elements, you need to use cleaners designed for pipes made of CPVC. With the help of this composition it will be possible to prepare the surfaces well enough for further gluing.

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. The elements are inserted into each other; to distribute the composition evenly, you need to rotate the fitting 90 degrees relative to the pipe. The parts are fixed for 30 seconds, during which time they should not be rotated again. 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 is completed, you need to check the presence of a bead, which is a uniform adhesive layer located around the circumference. You may have to get rid of excess glue using a soft rag.

Why is it worth using the cold method of joining plastic pipes?

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

Conclusion

If you connect polypropylene pipes to each other, following the simple rules and recommendations described above, then leaks and sagging of the pipeline will be eliminated. The service life of a pipeline installed using this method can reach 50 years.