How to connect PVC pipes without a soldering iron. Connecting polypropylene pipes without welding How to solder polypropylene pipes without a soldering iron

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.

Connection of 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

Plastic pipes can be connected without soldering different 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 a sewer system, then 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 inappropriate to seal with cement - after all, plastic and cast iron expand differently due to heating - it will be enough to fill the pipes just a few times hot water so that the connection loses its tightness and becomes unusable.

How to connect plastic water supply pipes with metal ones? Greater reliability will be required here, since the pressure in the water supply system 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're talking about about the installation of 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.

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 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 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. Compression fittings in addition to UV resistance, they are also characterized by 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 villages and towns, 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.

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 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.

Methods for connecting plastic pipes
Products made of polypropylene
Joining of metal-plastic pipes
Compression fittings for water pipes
Connection of polyethylene pipes
How to connect PVC pipes

To independently install a water supply system from plastic pipes, you do not need a lot of knowledge and experience, since this process is not complicated. However, to improve the quality of the work performed, it is necessary to become familiar with the technology and some of the nuances of connecting pipe elements of this type. It is also important to learn a few lessons about how to connect different types plastic pipe and the main points of this process.

Methods for connecting plastic pipes

Firstly, it is worth noting that plastic pipes include products made 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 - a review of proven joining methods”). For greater awareness, it is worth learning how to connect water pipes made from these materials.

Products made of polypropylene

Polypropylene pipe is the most popular material for plumbing. This is due to the presence of some advantageous points: reasonable price, high strength and long service life. Therefore, learning how to connect all types of plastic pipes should start with this type.

Polypropylene pipes are connected by welding with the obligatory use of couplings, angles, tees and other fitting elements. When connecting polypropylene pipes for water supply, 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 on hand:

Special soldering iron.
That's what it's called simply welding device with a set of special nozzles that allow connecting pipes of different sections. In this case, the nozzle for each pipe is selected individually in accordance with its cross-section.
Cleaning up. This tool is used to cut off the reinforcing layer at the ends of the pipes. Stripping is used only for multilayer reinforced pipe products.
Pipe cutter By its name you can tell that the device helps cut polypropylene pipes.
A tape measure, pencil or marker may also be needed in the process of joining polypropylene pipe products.

Installation of a water supply system made of 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, and reheating. The operating mode can be monitored by a light indicator (read also: “Types of welding PVC pipes, advantages and disadvantages of methods”).
While the soldering iron is heating, the reinforcing layer is stripped in the place where the fitting will be welded.
Dust and dirt are cleaned from the surface of the elements to be joined and wet areas are wiped well. Please remember that failure to follow these steps may result in a weak 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 holding it for a long time leads to deformation of the elements, and insufficient heating reduces the strength of the connection of plastic water pipes. Therefore, each welding machine is accompanied by a special table, which indicates the heating time of parts having 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 performed quickly but carefully. The pipe is inserted into the fitting until it stops, but it should 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 system are connected. To avoid damage to the material, you need to perform actions on unnecessary pipe scraps. The process of welding polypropylene pipes is quite complex, but after a few trial steps you can start working on your own.

Joining of metal-plastic pipes

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

Connecting using compression fittings involves performing the following actions: the end of the pipe is put on the collet, secured with a compression ring and compressed with a clamping nut.
Connecting with crimp fittings involves compressing the ring at the end of the fitting using a special press.
Docking with push fittings is a new joining 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, the tools should still be prepared. In particular, you will need a pipe cutter, which can be replaced with a regular one assembly 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 using a knife or pipe cutter, ensuring a right angle to the cutting line.
Before connecting the pipes, the cut ends are processed, that is, the diameter is calibrated and chamfered, using a calibrator in both cases.
The nut is removed from the fitting and placed on the end of the pipe, followed by a compression ring.
Now the collet is inserted into the end of the pipe, having first checked the presence of rubber O-rings.
Slide the clamping ring onto the collet and tighten the nut on the fitting. In this case, you should not allow the nut to be over-tightened, as this will lead to damage. rubber seals(read also: “How and how to connect PVC pipes - optimal ways connections").

All water supply elements are connected in a similar way. Such installation is characterized by one advantage: a minimal set of tools for work, which any owner has at hand. 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 using compression fittings is carried out in the same order, only the compression ring and nut are replaced with a ferrule ring. A manual or electric press is used to compress it.

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

When water is supplied to the assembled system, the fitting wedge is pushed out and clamped, thereby preventing water leakage. This method does not require special tools or wrenches, and the installation itself is several times faster. Read 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 using any of the listed methods is sealed 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:

Using compression fittings.
Welding using an electric coupling.

The connection with compression fittings is carried out by analogy with metal-plastic pipes, but in a certain sequence:

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

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

The connection of metal-plastic pipes in household water supply systems is carried out using electrofusion welding. Therefore, to perform the work you need to have a special welding device and an electric coupling with a diameter in accordance with the cross-section of the elements being connected.

The welding procedure involves performing the following steps:

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

A machine for this type of welding has a very high price, so if it is not intended to be used further, it is better to rent the device for a few days rather than 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 being joined are treated with this substance, the plastic melts and the edges are welded and not glued together. In other words, pipes are soldered without a soldering iron.

The process of connecting polyvinyl chloride pipes is as follows:

First, the edges of the pipes to be connected are cleaned of dust and dirt and dried well.
Then the ends are chamfered. This action must be performed so that the adhesive composition is not scraped off when connecting the elements.
Next, one end of the pipe is inserted into the fitting to measure its depth. Make a corresponding mark on the pipe with a pencil or marker.
The end of the pipe is treated with adhesive to the mark using a brush. At the same time, we should not forget that the glue should not be left on the surface for more than 25 seconds.
The elements are connected and slightly rotated 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 may be affected by air temperature and other factors.

Based on everything said above, we can conclude that in most cases the connection of plastic pipes can be done with your own hands, without having at hand special devices and without possessing 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 install the 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’ll talk about how to do this work, what are the advantages of communications made from such material.

Advantages of polypropylene pipes and their scope of application

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, there is no deposition of mineral salts on the inner walls of the pipes, due to which the cross-section of the pipeline does not change during the entire period of operation.
The guaranteed service life of pipes is 50 years (subject to operating modes, temperature and pressure).
Polypropylene pipes can be operated at liquid pressures up to 25 atmospheres, working temperature is 95, and the maximum permissible (for a short time) reaches 110 degrees.
This material is quite 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 application of such pipes is quite wide; they are used for laying the following pipelines:

A prerequisite for the use of polypropylene in these areas is strict adherence to soldering (welding) technology, and for this you need to know how to properly solder plastic pipes and what tool is used for this.

Tool for soldering polypropylene pipes

First of all, you should decide on the choice of tool that is used for soldering polypropylene pipes. To carry out work on 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 being connected to a temperature of 260 degrees. It is under these conditions that the diffusion welding process is possible, which results in a permanent connection, which in its properties is not inferior to the material of the main pipe.

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

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

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

Nozzles for soldering pipes. Inexpensive tool kits usually include 3-4 attachments for working with pipes various diameters. If necessary, such attachments can be purchased separately. The main feature of such elements is the high-quality non-stick coating. Typically, Teflon is used for these purposes, professional instrument A higher quality layer of this material is used, which practically prevents polypropylene from sticking during the soldering process.

Special plastic scissors are used to cut polypropylene pipes. They differ reinforced structure, allowing you to cut even reinforced pipes. Such a tool is included in any minimum kit for soldering polypropylene pipes.

To work with reinforced pipes, you also need a device that allows you to remove a chamfer from the workpiece along with a layer of aluminum foil. It is not possible to solder reinforced pipes without removing this layer. Of course, you can remove reinforcement using a simple knife, but with this device the operation is performed faster and with better quality. 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, it is necessary to perform a number of preparatory operations:

In general, the procedure for soldering polypropylene pipes is not complicated. The main thing is to respect the dimensions and maintain the temperature treatment time. Then the resulting joint will last quite a long time.

To independently install a water supply system from plastic pipes, you do not need a lot of knowledge and experience, since this process is not complicated. However, to improve the quality of the work performed, it is necessary to become familiar with the technology and some of the nuances of connecting pipe elements of this type. It is also important to learn a few lessons that describe how to connect different types of plastic pipe and the main points of this process.

Methods for connecting plastic pipes

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

Each material has certain properties, therefore, joining products is done in different ways, including soldering polypropylene pipes without a soldering iron (read also: “How to connect polypropylene pipes - a review of proven joining methods”). For greater awareness, it is worth learning how to connect water pipes made from these materials.

Products made of polypropylene

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

Special soldering iron. This is simply a welding device with a set of special attachments that allows you to connect pipes of different sections. In this case, the nozzle for each pipe is selected individually in accordance with its cross-section.
Cleaning up. This tool is used to cut off the reinforcing layer at the ends of the pipes. Stripping is used only for multilayer reinforced pipe products.
Pipe cutter By its name you can tell that the device helps cut polypropylene pipes.
A tape measure, pencil or marker may also be needed in the process of joining polypropylene pipe products.

Installation of a water supply system made of 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, and reheating. The operating mode can be monitored by a light indicator (read also: “Types of welding PVC pipes, advantages and disadvantages of methods”).
While the soldering iron is heating, the reinforcing layer is stripped in the place where the fitting will be welded.
Dust and dirt are cleaned from the surface of the elements to be joined and wet areas are wiped well. Please remember that failure to follow these steps may result in a weak 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 holding it for a long time leads to deformation of the elements, and insufficient heating reduces the strength of the connection of plastic water pipes. Therefore, each welding machine is accompanied by a special table, which indicates the heating time of parts having 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 performed quickly but carefully. The pipe is inserted into the fitting until it stops, but it should 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 system are connected. To avoid damage to the material, you need to perform actions on unnecessary pipe scraps. The process of welding polypropylene pipes is quite complex, but after a few trial steps you can start working on your own.

Joining of metal-plastic pipes

You can also do the connection of metal-plastic pipe products yourself using one of three methods:

Connecting using compression fittings involves performing the following actions: the end of the pipe is put on the collet, secured with a compression ring and compressed with a clamping nut.
Connecting with crimp fittings involves compressing the ring at the end of the fitting using a special press.
Docking with push fittings is a new joining 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, the tools should still be prepared. In particular, you will need a pipe cutter, which can be replaced with a regular 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 using a knife or pipe cutter, ensuring a right angle to the cutting line.
Before connecting the pipes, the cut ends are processed, that is, the diameter is calibrated and chamfered, using a calibrator in both cases.
The nut is removed from the fitting and placed on the end of the pipe, followed by a compression ring.
Now the collet is inserted into the end of the pipe, having first checked the presence of rubber O-rings.
Slide the clamping ring onto the collet and tighten the nut on the fitting. At the same time, you should not allow the nut to be over-tightened, as this leads to damage to the rubber seals (read also: “How and how to connect PVC pipes - the best connection methods”).

Compression fittings for water pipes

The connection using compression fittings is carried out in the same order, only the compression ring and nut are replaced with a ferrule ring. A manual or electric press is used to compress it.

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

The connection using any of the listed methods is sealed 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:

Using compression fittings.
Welding using an electric coupling.

The connection with compression fittings is carried out by analogy with metal-plastic pipes, but in a certain sequence:

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

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

The welding procedure involves performing the following steps:

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

How to connect PVC pipes

The process of connecting polyvinyl chloride pipes is as follows:

First, the edges of the pipes to be connected are cleaned of dust and dirt and dried well.
Then the ends are chamfered. This action must be performed so that the adhesive composition is not scraped off when connecting the elements.
Next, one end of the pipe is inserted into the fitting to measure its depth. Make a corresponding mark on the pipe with a pencil or marker.
The end of the pipe is treated with adhesive to the mark using a brush. At the same time, we should not forget that the glue should not be left on the surface for more than 25 seconds.
The elements are connected and slightly rotated 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 may be affected by air temperature and other factors.

Based on everything said above, we can conclude that in most cases, connecting plastic pipes can be done with your own hands, without having special devices at hand and without possessing 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 install the water supply without unnecessary material costs.

Connecting plastic water pipes: how to connect by soldering, without soldering and a soldering iron, options

Connecting plastic pipes without using a soldering machine

When installing communication systems, it is necessary to connect individual elements, but this process can be performed in completely 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.

The photo shows plastic products for communication systems.

Docking using fittings

With this option, a set of shaped parts is used that makes it possible to combine not only two, but also more elements. Every developer who does not have a soldering machine at his disposal 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 connecting communications.
The ease of installation makes it possible for even non-professionals to do the docking.
The ability to use parts in pressurized systems expands the scope of application.

This is what the connection fittings look like.

Note! It must be taken into account that this method applicable for elements with a small diameter, and in other situations it is thermally affected joining that is most often used.

Carrying out work

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

First of all, cutting is done components communication system, if required in a particular case. The cut must be made strictly perpendicular to avoid bevels and other flaws. After this, using a calibrator, the ovality at the joint is eliminated.

Next, a special coupling is put on, and the fitting itself with O-rings is inserted inside the pipe. The top is crimped using prepared pliers. In this way, it is possible to join the plastic elements.

A clear example of installing a compression fitting.

However, in some cases you need to know how to connect a plastic pipe to a cast iron pipe. For this, a special adapter is used, the diameter of the sides of which corresponds to the size of the pipes used. During the joining process, it is necessary to remember that the linear expansion coefficients of plastic and cast iron are noticeably different.

Gluing 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 component parts are joined using a special chemical composition. During the work, it is possible to ensure sufficient tightness.

The principle of operation of the composition

Adhesive intended for plastic products, usually contains polyvinyl chloride, soluble in methyl ethyl ketone, tetrahydrofuran and cyclohesanone. Special additives are also added to two-component formulations to improve adhesion.

Widely used composition.

Advantages of the glue method

High-quality grip chemical agent with the surfaces of the elements allows for high tightness.
Availability basic material makes it possible to use it for a wide range of consumers.
Invisibility of the joint has a positive effect on the aesthetic perception of the components of the communication system.

Attention! The glue used must be stored at a sufficient distance from open flames, as it easily ignites. In addition, during work it is necessary to protect the skin from contact with the substance.

Application of the composition

You can do the gluing yourself. Work must be carried out at temperatures from +5 to +35 degrees. You need to prepare a brush with natural bristles in advance. In most cases, it comes directly with the adhesive.

Before starting the main steps, it is advisable to assemble the structure without using chemicals in order to perform preliminary fitting. Before applying the substance, the surface must be degreased using solvents.

The process of applying glue is demonstrated.

Apply to prepared surfaces thin layer glue. The plastic product is inserted into the hole until it stops, and rotation or other manipulations must be avoided. The components are held for 15-20 seconds so that the adhesive has time to dry.

Fitting into socket

The presented method is mainly applicable for sewer systems, since no pressure is 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 carried out.

Positive aspects of technology

The relatively high assembly speed guarantees installation in the shortest possible time.
Without the need to purchase additional components, costs can be reduced.
Possibility of implementation self-assembly allows you to refuse professional help.

Connection principle: 1 – socket, 2 – seal.

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

Description of the assembly process

After making sure before installation that there is a rubber ring in the socket, you need to clean it from various contaminants, then it will be possible to achieve good adhesion. Lubricant must be applied to the smooth edge of the pipe to improve sealing. After this, docking takes place.

To do this, the smooth end of the element is inserted into the socket until it stops. The place of contact with the edge is marked with a marker to make it easier to determine the joining distance. Next, the product is pulled back approximately 10 mm directly from the line.

The gap made is needed to compensate for linear expansion, which usually occurs during temperature fluctuations. In this regard, it will be possible to avoid the appearance of internal voltages in the communication network.

Key points for socket connections.

System components are cut strictly perpendicular to eliminate the possibility of bending the pipeline. After cutting, the end is chamfered using a regular file. This reduces the likelihood of damage to the sealing gasket.

Final part

After considering this topic, almost every beginner should be able to efficiently connect plastic pipes without outside help. Additionally, visual instructions are included that will help you understand the complex issues associated with installation work.

Connecting plastic pipes without soldering: video instructions for do-it-yourself installation, how to connect with cast iron, methods, photos and price

How to connect polypropylene pipes without a soldering iron?

It is necessary to slightly alter the water supply system in a new building, add a piece of pipe - lengthen it. I have all the materials except the soldering iron, is it possible to make a high-quality connection, for example, using glue? Or can such pipes be connected only with a soldering iron?

For high-quality bonding, it is advisable to solder polypropylene pipes only with a special soldering iron. But if it is not there, not everyone has it, then the pipes are connected to each other with other materials and tools, for example, gas burner. This method is suitable for soldering pipes large diameter. Measure and cut the required length of pipe, be sure to add

2-2.5 centimeters. Heat the pipe and fitting simultaneously with a burner. Combine them and hold for a while, wait until they cool down.

Polypropylene is a difficult material to glue, and to connect polypropylene pipes you need to choose a very high-quality adhesive designed for this material.

Prepare a piece of pipe and fitting for it. To reliably glue polypropylene pipes, it is necessary to clean and degrease the surfaces. Then apply a thin, even layer of glue to the pipes and connect the parts with a fitting, wait according to the instructions for at least 2-3 minutes. Do not use the pipes for several hours until they have completely set.

Pipes intended for a soldering iron with high quality (I would like to emphasize the word “high quality”) cannot be glued together.

In general, it can be glued together.

You need to buy this glue

In terms of money, this will turn out to be many times more expensive than renting a soldering iron, or paying a craftsman to extend the pipe you are writing about (the craftsman will come with his own soldering iron).

We clean the pipe with a shaver (practice somewhere on a piece of pipe, set the shaver knife to remove a small layer).

We have to clean the pipe, because the diameter of the pipe is larger than the diameter of the fittings (given the total diameter of both the pipe and fittings).

After we have cleaned it, we polish it with fine sandpaper.

We try to insert the pipe into the fitting; the fit should be tight.

Now we remove the dust, degrease, and dry.

We insert the pipe into the fitting and hold it for some time (30 seconds).

Remove excess glue immediately.

In the end I would like to give some advice:

After we have incorrectly connected the pipes under heating with a soldering iron, glue, be sure to attach them above the eye front door sticker with the inscription “turn off the main valves.”

And block it every time you leave the house.

How to connect polypropylene pipes without a soldering iron?

For high-quality bonding, it is advisable to solder polypropylene pipes only with a special soldering iron. But if it doesn’t exist, not everyone has it, then the pipes are connected to each other with other materials and...

Connecting plastic pipes without soldering. Fittings and cold welding

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.

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:

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.

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 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.

How to connect plastic pipes without soldering: fittings and cold welding

How to connect a pipe using compression fittings; how to connect plastic pipes using cold welding, without soldering.

Pipelines made of polypropylene, if assembled with high quality, can last up to half a century without repair. Popularity of plastic communications in construction individual houses is explained, among other things, by the fact that installation polypropylene pipelines available for self-execution.

The choice of method for connecting plastic pipes depends on the availability of special tools, the nature of the materials being connected, and the purpose of the communications.

All methods for installing polypropylene pipes can be divided into two large categories. One involves welding materials by heating an organic polymer to a melting temperature. The second includes all “cold” joining methods, with the exception of cold welding.

Welded joints are called permanent joints. Diffusion processes are involved here. Homogeneous polymers are mixed at the molecular level, forming a monolith. This connection is the most durable, but requires a special tool or glue (if cold welding). The second disadvantage is the impossibility of temporarily dismantling communications without destroying part of the structure.
Detachable (threaded) connections are made using special fittings. They are used when joining thin-walled pipes of small diameter, when making structures from different materials, joining polypropylene with polyethylene, with metal elements.

Diffusion welding

A distinction is made between butt welding (pipe to pipe) and using additional fittings (socket welding). These are technologies based on the melting of polypropylene, which differ in the nuances of the work.

Diffusion sleeve welding is carried out on polypropylene pipes with a diameter of 16 to 40 mm.

Here the fitting serves to supply additional polypropylene to make the connection reliable.

For thicker-walled materials, butt welding is carried out, connecting the parts of the pipe directly, without the use of additional parts. Manufacturers polypropylene materials They offer fittings made entirely of polymer materials, combined, with a transition to threads for metal elements.

The fitting configuration is selected based on the characteristics of the pipeline. Manufacturers offer the following types of connecting elements:

corners, tees, couplings;
fittings for connecting elements of the same diameter with transition to another diameter;
all-polymer or polymer-metal combinations;
with internal and external thread.