How to connect plastic pipes without soldering. Connection of polypropylene pipes - different technologies for your convenience Connection of pp pipes with a coupling

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

Docking with fittings

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

Advantages of the method

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

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

Carrying out work

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

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

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

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

Bonding individual elements

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

The principle of operation of the composition

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

Advantages of the adhesive method

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

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

Application of the composition

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

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

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

Socket corral

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

Positive aspects of technology

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

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

Description of the build process

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

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

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

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

Before dismantling the soldering of wires and awnings, let's dwell on the pipes. The apparatus for their welding costs several thousand rubles. Mostly professionals buy it for themselves, but for an ordinary person this device simply will not pay off. In this regard, it is necessary to look for an alternative option, which can become much more common in ordinary houses gas-burner.

Such a burner perfectly shows itself both in repair and in installation. At the same time, it can be soldered as pipes of small diameter, as well as rather 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 connecting 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. So you will be sure that the same temperature effect must be applied to connect them. In addition, you should not save on quality. Its absence can manifest itself both during the soldering process and during subsequent operation;
Do not solder in cold conditions. If, for some reason, the temperature in the room has dropped by less than +5 degrees, the connection may be fragile;
It is recommended to practice on unnecessary pipe sections.

Alternative - PVC pipes

There are plastic pipes that do not need to be soldered, as they can be glued together. In addition, they have all-plastic pipe threads located on the inner and outer sides.

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

The procedure for soldering polypropylene pipes

Drafting detailed diagram, marking the places of turns, the location of cranes, 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 fitting are heated with a burner. The temperature at the same time is approximately 280 degrees Celsius;
The fused elements are held together until they cool.

A universal way to solder an awning

With the advent of the warm season, the need for tents increases. By putting on your local area or taking a small tent for a picnic, you can find an unpleasant surprise- a hole. Is it worth it to buy a new awning after that or can I somehow fix the situation?

For soldering, we need a building hair dryer, which will have a special crevice nozzle, as well as a patch with a roller. After preliminary cleaning of the place of damage and patching of dust and grease, it is necessary to lay the awning on a flat surface. Having attached a patch to it, we begin to heat up both surfaces with the help of a crevice nozzle, simultaneously fastening it with a roller. The better you heat the surfaces, the better they 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 a soldering tape

Though regular soldering iron found in our homes much more often than its analogue for plastic pipes, it still may not be at hand in right moment 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 the wires “forever” without a soldering iron.

A special soldering tape will help us with this, which allows you to create a strong polymer layer around the wire, providing a complete connection and insulation. problem area. The steps for 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 around the place of twisting;
Heating the tape with an open flame until it melts and evenly covers the problem area. For this, ordinary matches are suitable;
After the tape has cooled, remove the excess flux. The wire is fully connected and ready for further use.

Welding wires with a 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 binders ground to a state of powder. In the vast majority of cases, this method is used for soldering small wires. So, if your favorite headphones are out of order, and there is no soldering iron at hand, then ideal solution it will be pasta. The way to use it is very simple:

We clean the wires and twist them together;
We apply the paste to the place of twisting as evenly as possible;
With help ordinary lighter the paste is heated until it melts and turns into a full-fledged soldering;
After this place it is necessary to isolate all bare parts of the wire. The ideal remedy for this is a heat shrink sleeve. We put it on the place of soldering, after which we warm it up and get reliable insulation.

With polypropylene, it is important to know that High Quality when carrying out such work, it can be achieved only when the wall thickness of the products is taken into account. Modern technologies allow you to create quite durable and reliable communications from such pipes. They are not subject to corrosion processes, so they found such wide use. Such manipulations can be carried out in one of several ways, however, work can be classified into two categories:

soldering method;
fittings.

Connection methods

If you decide to find out how to connect a polypropylene pipe to a polypropylene pipe, you need to figure out the methods. For example, thin-walled pipes can be threaded. If you need to equip the supply system cold water, the temperature of the environment in which does not exceed +20 ° C, then products with the marking PN 10 should be used. The same applies to laying underfloor heating, in which the temperature does not exceed +45 ° C.

If it is necessary to arrange a cold water supply system that will be transported when high blood pressure, pipes marked PN 16 should be used. This recommendation is relevant for pipelines with reduced pressure. Most quality option connection is welding, it can be used for PN 20 pipes, which are able to withstand temperatures up to +80 °C. They have thicker walls compared to the previous ones.

The same connection method is also suitable for PN 25 - pipes reinforced with aluminum foil, which are intended for systems central heating And hot water. Pipes with this marking will be able to withstand temperatures up to +95 ° C. Connections may be permanent when welding is used; as well as detachable, in this case a thread is used.

Threaded connection

Before connecting a polypropylene pipe to a polypropylene pipe, you need to figure out which method is best to use. For example, for a threaded connection, you need to prepare threaded fittings, because you need to cut the thread into polypropylene products it is forbidden. The connection is carried out using a special tape, which will make the joint strong and reliable.

Used fittings

If you decide to use threaded connection then you will need:

solder couplings;
triple square;
crosses combined;
couplings;
90° elbows;
combined squares;
ball valves;
soldering squares at 45 °;
plugs;
adapter with external thread;
water outlet;
fittings made of polypropylene with factory thread.

Welded connection

If you are thinking about how to connect a polypropylene pipe with a polypropylene one, then you can use the welded method. However, it is important to consider that the connection will be one-piece. When melting, the molecules of one part move to another, diffusion occurs. From heating by an electric welding machine, the parts are organically interconnected, because they have the same chemical composition.

To carry out work, prepare:

soldering iron;
apparatus for welding;
polypropylene fittings and pipes;

In addition to the listed tools and materials, you should prepare a hacksaw or scissors for metal, a tape measure, couplings like taps, corners and pipes. It is important to stock up on fum tape. As for the apparatus for welding, it will consist of heating element and welding nozzles, the diameter of which varies from 16 to 40 mm.

As soon as the indicator goes out, you can start working, because this will be a signal that the desired temperature of 260 ° C has been reached. This will take approximately 15 minutes. If the temperature is below zero environment, then welding work must be abandoned. If it is necessary to weld pipes with a diameter of 60 mm, use the method socket welding. For a more impressive diameter, butt welding is suitable, which does not involve the use of additional parts.

For pipes whose diameter varies from 16 to 50 millimeters, a hand soldering iron should be used. More impressive diameters will be connected by a mechanical welding machine. The ends of the pipes should be well heated with removable sleeves, then it remains only to press the elements together, applying little effort. This effect should last a few seconds.

Electrofusion welding acts as a more good option compared to the previous method, because the process is controlled by the program. The quality of the joint will be higher, and the need for fixation will disappear. Devices with electrodes are used to supply voltage to the heater inside the sleeve.

Before joining two poly propylene pipes socket method, it is necessary to cut products at a right angle.

Next, the master should put a mark on the depth of the socket, to which 2 mm should be added. The connection of products begins with heating with a special device. After the parts are connected to each other. And if polypropylene has an aluminum layer, then the connection can be made through perforated holes. This allows you to significantly increase the strength of the pipe marked PN 25.

Use of butt welding

Before connecting polypropylene pipes to each other, you should think about which method is best to use. Butt welding may be suitable, which will allow you to connect pipes together for outdoor sewerage. This approach is relevant if the pipe wall thickness exceeds 4 mm.

At the first stage, the welding spots should be trimmed to parallelism. After that, it is necessary to carry out heating and ensure accuracy with a centering device. Welding should be accompanied by ventilation of the room, because polypropylene emits carbon dioxide and water vapor, as well as smokes.

Connection without soldering

Quite often, novice home craftsmen are wondering how to connect polypropylene pipes without soldering. For this, fittings made of the same material as the pipes are usually used. If the heating system contains fiberglass reinforced highways, then other types of products will not work.

You should stock up on polypropylene fittings that are reinforced with fiberglass. An exception is the case when there is a need to combine polypropylene with another material. In this case, threaded elements are used, for example, "American". Before connecting polypropylene pipes without a soldering iron, you should ask what fittings can be found on sale for arranging water supply and heating systems, among them:

Y-shaped;
straight;
T-shaped.

It is necessary to use these elements, taking into account the method of application and position. According to the type of connection, several types of shaped products are distinguished, namely:

compression (crimp);
welded.

Compression fittings made of polypropylene are supplied in ready-made, there is no need to collect them additionally. Compression fittings have advantages over welded fittings. They consist in:

ease and simplicity of installation;
no need to use welding equipment;
installation possibilities polypropylene fittings under any weather conditions, because they are not afraid of negative temperatures;
no need for the master to have special skills in installing compression fittings.

If you are thinking about the question of how to connect polypropylene pipes at home using fittings, then you should familiarize yourself with the technology. At the first stage, construction tools are prepared, namely:

gas and adjustable wrenches;
screwdrivers;
open-end wrenches;
sealant;
special scissors;
pipe cutter;
beveler;
caliber.

You can think about the location of the pipes, which can be in the wall or on top of it. The diagram should not have hard corners. Product flexibility is achieved through building hair dryer. If you decide to use polypropylene pipes for heating, you should know how to connect them.

The connection point must be sealed in any way convenient for you. You can do this with fum tape. Then the system is assembled according to the principle of the designer, at the corners and in the places where the flow is distributed into several parts, special elements such as corners and tees should be used.

Conclusion

Now you know how to connect polypropylene pipes with fittings. However, as practice shows, the welded method is more reliable, because diffusion occurs in the process, which ensures the reliability and strength of the system.

Polypropylene pipes have long gained great popularity among the consumer. Unlike metal options polypropylene pipes are much lighter in weight, and the methods of connecting this type of communications do not require skills in working with a welding machine and metal cutting tool, as is the case with iron pipes.

Peculiarities

As with any other type of plumbing, installation of polypropylene pipes has a number of features.

In butt welding, the walls should not be thicker than 4 mm. The mating surfaces must be trimmed, while strict parallelism of the connected elements must be observed. When docking, it is recommended to use special guides.
Since threading on a polypropylene pipe cannot be done, threaded fittings are used for threaded joints, and a sealant and Teflon tape are used to seal the connection.
When welding polypropylene pipes, it is imperative to ventilate the room. At negative temperature this type of work cannot be carried out indoors, since docking with insufficient heating of the elements does not guarantee the tightness of the connection.

At welding work with polypropylene pipes, it is necessary to heat the soldering iron to the desired temperature and install it on the stand. When working, safety precautions must be observed, as we are talking about high temperature, which is 260 C.

For high-quality connection of elements, it is necessary to withstand the melting time required for a certain pipe diameter.

Below are the diameters and time intervals.

16 mm - 5 sec;
20 mm - 6 sec;
25 mm - 7 sec;
32 mm - 8 sec;
40 mm - 12 sec;
50 mm - 24 sec;
63 mm - 40 sec.

What is necessary?

For the installation of polypropylene pipes you will need special tools for cutting and connecting elements.

The list of tools includes such devices as:

pipe cutter;
welding machine;
sweep;
glue gun;
marker for marking;
connecting part and tape measure.

pipe cutter for polypropylene pipes it is better to use a professional one - such a tool guarantees reliability and ideal even cut, it will prevent the formation of burrs on the cut surface. When choosing a pipe cutter, it is worth considering such important parameter as the minimum and maximum pipe diameter. The tool should be chosen with a blade made of alloy steel only.

Welding machine manual type must have a thermostat and a heating plate with holes for installing nozzles. TO welding machine You need a pair of Teflon-coated nozzles. It should be chosen from famous brands, which have proven themselves in the market, since the tool of dubious manufacturers may fail during operation, which will stop all work.

Stripping are manual and in the form of a nozzle on a drill.

Couplings with internal knives (shavers) are used for stripping the outer layer. Under the diameter of the pipe that is being cleaned, they select desired clutch. They also use double-sided couplings that allow you to work with different diameters. To clean the inner layer of the pipe, they take a stripper-facer, in which the knives are inside. The pipe is inserted into the tool and rotated several times.
Stripping in the form of nozzles on a drill differ from manual options only by the presence of a rod that is inserted into the tool chuck.

glue gun can be used as an alternative to other types of connections. This tool has two advantages: glued seams are almost as reliable as welded and other joints, and the glue sets quickly. Such connectors perfectly fasten shaped parts and other elements.

Ways

There are several ways to connect polypropylene communications. Choosing which method to use depends on the type of PP pipes and their purpose.

Cold welding based on gluing elements with a special adhesive composition. It is applied to the parts that need to be connected. First, the surfaces to be bonded must be degreased. After applying the glue, wait a while and connect the pipe with desired element. After a short period of time (approximately 20 minutes), the connection will stabilize and be reliable.

Connection using steel or cast iron fittings. This method is suitable for pipelines with a small diameter. Fittings are usually installed on bends and branchings of communications. The fitting includes such elements as a cap, a sleeve and a clamping ring, which is located in the socket of the product. The pipe is fixed with the help of a seam ring included in the design of the fitting.

When connecting with fittings, you must follow the step-by-step action plan:

the pipe cut must be made at a right angle;
all burrs on the surface to be joined must be eliminated;
then you need to install the nut from the fitting on the pipe and put a clamping ring on it;
after that, it is required to insert the pipe into the fitting and secure the connection with a clamping ring and nut.

The connection using flanges is considered very reliable, withstands high temperatures and high pressures. This method is used when it is necessary to connect polypropylene pipes without resorting to welding. For connection, bolts are used that are screwed into the thread of the flange.

When connecting with flanges, the following installation rules must be observed:

at the junction of the pipe, it is necessary to make a cut, avoiding the appearance of burrs;
the gasket that is installed on the cut must have a protrusion of 15 cm;
a gasket is placed on the flange and connected to another flange installed on another pipe to be connected;
gaskets must be installed in such a way that their cross section does not touch the bolts;
more than one gasket per flange cannot be installed, as this will reduce the tightness.

Connection using couplings. To connect with couplings on pipes, you need to make a thread for their subsequent installation and, for the tightness of the connection, wrap a little tow on it. The edges to be joined should be cut evenly and the location of the coupling should be marked with a marker. Then you need to apply grease to the coupling and install it on the pipe, at the previously marked place.

Welding refers to the hot connection method. This type of connection is one of the most reliable, and its essence lies in the melting of polypropylene with a special apparatus under the influence of a temperature of 260 C. The elements heated to the desired temperature are pressed tightly against each other, and after they cool down, a reliable connection. The time after connection to the final polymerization of polypropylene will take 20 minutes.

Before proceeding with the connection by welding, it is necessary to remove all irregularities and burrs, and if the pipe has a layer of foil, then it must be treated with a trimmer.

When connecting by welding, the following sequence of actions should be observed:

turn on the welding machine and heat it up to a temperature of 260 C;
you need to put on the nozzles of the apparatus on the connected propylene pipes - this must be done very quickly;
when the elements to be welded begin to melt, they are removed from the apparatus;
connect the melted elements to each other by pressing firmly for 15 seconds;
the connected elements must be allowed to polymerize for complete setting - this usually takes about 20 seconds.

Common mistakes when connecting by welding:

displacement of elements during welding at the time of their heating;
when joining the elements, they cannot be rotated - otherwise the seam will turn out to be unreliable;
when welding the valves, the location of the valves was not taken into account, and they cannot move freely.

HDPE or PVC pipe can be connected by soldering. This is especially true for polyethylene construction.

How to connect?

In the case when you need to connect a polypropylene pipe to a metal one, you can use the threaded connection method. To do this, you will need special fittings, one end of which is smooth, and the second is threaded under metal pipe. With this type of connection, the diameter of the pipe should not exceed 40 mm.

The thread on the fitting can be either external or internal. Smooth surface with reverse side, needed for welding a plastic pipe. Mainly used for sealing linen tow, impregnated with drying oil.

Tow should be applied for a maximum of two turns and in the direction of the thread.

The sequence of actions for the threaded mounting method:

a pipe is cut at a right angle, its end is lubricated with grease, and then a thread is applied using a threading tool;
remove all chips from the thread and seal the joint with tow;
a fitting is screwed onto the pipe thread;
the opposite smooth end of the coupling is welded to the polypropylene pipe.

It is possible to connect polypropylene pipes both by welding and by cold method. The first option is preferred, as it is considered the most reliable and durable.

Welded connection

Before welding, polypropylene pipes and fittings for them must be treated with a degreasing solution, and then allowed to dry - only after this procedure can you proceed directly to welding. Similar preparatory work required for any type of PP pipe except for those reinforced with foil. At reinforced pipe the cut is cleaned with a special cleaning tool (shaver), into which the desired end of the pipe is inserted and rotated several times. After stripping, the upper part of the pipe must be degreased.

It is necessary to put a mark on the pipe with a marker, noting the desired distance for pressing it into the fitting. Then the end of the pipe must be put on the mandrel and the fitting inserted into the sleeve of the welding machine. All actions should be done very quickly and clearly. After that, the connected elements are heated for a strictly allotted time.

After the elements to be welded are melted, they must be removed from the nozzles and the pipe must be quickly pressed into the fitting. Some forces are required for the connection, since the elements to be welded must be pressed tightly and held in this position for a while. It is not worth clamping the joining elements for more than 20 seconds, since this time is quite enough for them to firmly grasp. After joining, be sure to let it cool down for a few minutes.

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 difficult. However, in order to improve the quality of the work performed, it is necessary to familiarize yourself with the technology and some of the nuances of connecting this type of pipe elements. It is also important to learn a few lessons about how to connect different types plastic pipe and the highlights of this process.

Methods for connecting plastic pipes

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

Polypropylene.
Metal-plastic.
Polyethylene.
Polyvinyl chloride.

Each material has certain properties, therefore, the connection of products is carried out in different ways, including soldering polypropylene pipes without a soldering iron (read also: ""). For greater awareness, it is worth knowing how to connect water pipes from the named materials.

Polypropylene products

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

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

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

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

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

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

Docking of pipes made of metal-plastic

The connection of metal-plastic tubular products can also be done by hand using one of three methods:

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

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

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

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

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

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

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

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

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

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

With compression fittings.
Welding by electrofusion.

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

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

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

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

The welding procedure involves the following steps:

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

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

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

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

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

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