How to connect polypropylene pipes

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

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

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

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

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

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

The designs of soldering machines for butt welding are characterized by increased complexity. Typically, such equipment contains not only a heating element, but also a system for centering the parts being welded.

As a rule, direct welding equipment, like the technology itself, is rarely used in household sphere. Priority of use is industry.

A more complex device, with the help of which precise alignment of the parts to be welded is carried out with the further process of heating and soldering. Used with direct welding technology

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

scissors - ;
construction tape;
bench square;
shaver for pipes with reinforcement;
marker or pencil;
surface degreasing agent.

Since the work is performed on high-temperature equipment, you should definitely wear thick work gloves.

Polypropylene Welding Procedure

Important warning! Welding work polymer materials must be carried out in conditions of good ventilation of the room. When polymers are heated and melted, toxic substances are released, which in a certain concentration have a serious impact on human health.

The procedure for welding polypropylene is simple, but it requires precision and accuracy in work. You should also avoid common mistakes, such as insufficient or excessive heating

The first thing you need to do is prepare for work:

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

Place the mating parts (pipe - coupling) on the soldering station blanks at the same time. In this case, the polypropylene pipe is inserted into the internal area of one blank, and the coupling (or socket of the shaped part) onto the outer surface of the other blank.

Typically, the ends of the pipe are inserted along the border of the previously marked line, and the coupling is pushed in until it stops. When curing polypropylene parts on heated blanks, you should remember an important nuance of the technology - the holding time.

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Conclusions and useful video on the topic

There is always something to learn from professionals. You can see how to work with polypropylene in the following video:

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

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

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

Modern technologies make it possible to create reliable and durable communications using polypropylene pipes. They are not subject to corrosion. Therefore they are widely used. But in this case important point is to connect polypropylene pipes with your own hands. This can be done by soldering or using a method without welding. Therefore, it is not necessary to involve a specialist. Let's look at each in more detail.

And for this process you will need a welding machine, which experts often call an “iron.” This device is a simple device that runs on electricity. In the kit it often has nozzles of different diameters with instructions.

The joining of such products occurs when their ends are exposed to high temperature. But there is one subtlety here. The pipes are heated from the outside, and the connection elements from the inside. This is the only way to get strong knots.

Step by step process:

First, the soldering iron is turned on, it should be heated to 270 degrees. The products are cut into the required pieces and cleaned. You can make convenient notes to understand what depth to immerse them in the heating apparatus.
We evenly insert the pipes and connection elements onto the nozzles of the device. This is also important for quality soldering.
After the element and pipe have melted, they are removed from the device and connected to each other. The evenness of the soldering is also important here. You need to press down lightly, but do not scroll around the axis. Pressure also affects the quality of soldering.
After joining the elements, they need to be held motionless for several minutes.

When performing manipulations, you should pay attention to one more important nuance. The inner surface of the seams should not lose permeability. After all, when melted, a small bump appears, which is dangerous if the product is of small diameter.

Heavy influx of material caused by excessive heating should also be avoided. To check the permeability of the pipe, you can blow it out and run water through it.

It is recommended that if you do not have soldering experience, you can first practice before starting to perform basic manipulations. And therefore, it is recommended to purchase materials with a reserve, because in addition to training, defects can certainly occur during the main work. It is highly undesirable to run or go to the store again while soldering is in progress. For getting more For information regarding do-it-yourself soldering, you can also watch a video on the topic.

As for the device itself, it is not necessary to buy it. The device can be rented from someone.

However, this non-welding method has one significant drawback. The procedure time is significantly longer compared to welding. And this must be taken into account when choosing a pipe connection method.

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Conclusion

In short, there is nothing scary or very difficult about connecting polypropylene pipes with your own hands. As with most technologies, it requires clear and correct execution established technological standards. To do this, you can additionally familiarize yourself with video materials. Then the process will be completed not only quickly, but also efficiently. And this is already a guarantee of the durability and reliability of the resulting water supply or heating system.

It is not necessary to use welding. After all, you can get by alternative way. However, the disadvantage of this solution will be the increase in time of all work. Therefore, it is necessary to choose a method taking this point into account. Then everything will go smoothly, and the constructed system will gain the required strength and reliability.

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Poly propylene pipes much more convenient and practical than their metal counterparts. Their main advantages:

easy installation;
not a lot of weight;
not subject to corrosion;
not expensive.

Due to their advantages, they are becoming increasingly popular.

One more important advantage This material is that you don’t need to hire anyone for installation; everything can be done with your own hands. Therefore, if you need to replace an old leaking water supply system, you can safely get to work. Polypropylene can be joined by soldering or using cold method.

Method 1 - soldering

This method requires the presence of a special welding machine, which experts call an “iron.” An iron is a kind of soldering iron powered by electricity. It comes with nozzles of different diameters.

If you are not going to professionally install water pipes, you do not need to buy such a device. You can rent it; usually all sellers provide this service. The process of soldering polypropylene pipes is not complicated.

Video: How to solder pipes with your own hands

Soldering technology

Polypropylene products are joined under high temperature. The pipe itself must be heated with outside, and all connecting elements from the inside. This creates a strong connection.

Soldering stages

Turn on the soldering iron, it should heat up to 270 degrees C. While heating occurs, you can cut the necessary workpieces and clean them. For convenience, you can make notes that will show to what depth to immerse them in the welding machine. They are cut with a special pipe cutter or a regular hacksaw. If cutting is done with a hacksaw, you should pay attention to the burrs and if they remain, they must be cut off with a knife.
After the soldering iron has heated up to the required temperature, we insert the pipe and connecting elements onto its nozzles. For high-quality soldering, all elements must be inserted evenly. Movements must be fast and confident. Parts that are exposed to heat must not be moved or twisted.
When all the elements are well heated, they are removed from the soldering iron and connected to each other. This is also done with quick and confident movements. The parts are connected with light pressure (without rotation) and fixation for 10-15 seconds.
After this procedure, you can proceed to soldering the next unit and so on until the bitter end, when the water supply is completely soldered.

Method 2 - without soldering

This is a connection method that does not require soldering equipment. With this method, there are two options: connection with compression fittings and so-called “cold welding”.

For the option with compression fittings, you only need a special crimp wrench. This wrench is usually sold complete with fittings.

If you choose the “cold welding” option, then you will need a special “aggressive” glue. It is applied to the parts, after which they are connected and pressed, fixing them in this position for several seconds.

Connecting polypropylene pipes with glue is only suitable for water pipes with cold water. Connecting polypropylene pipes without soldering has a big drawback, namely, compared to soldering, the time required to install the pipeline is significantly longer.

In conclusion, I would like to say that there is nothing complicated in independently connecting polypropylene pipes. Like most others construction work, you will be required to conscientiously and strictly comply with all technological standards.

Then the process of connecting polypropylene pipes will be completed quickly and, most importantly, efficiently. And the quality of the work performed is the key to durable and reliable operation water supply and heating systems.

Watch the video: How to properly solder polypropylene pipes with your own hands

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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, due to 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 connections are made in other ways.

However, connecting plastic pipes without soldering has one serious drawback– pipeline installation 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 fittings, you must adhere to step by step instructions:

Pipe cutting. They must be cut at right angles.
Removing hangnails. The surface of the products that will be placed in the fittings must be perfectly flat.
Installing the nut. It is removed from the fitting and installed on the pipe, after which the clamping ring is put on it.
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 non-pressure pipelines. 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 sandpaper. All fitting and gluing locations are marked with a marker. After this, you can begin gluing, which consists of the following steps:

Degreasing. Before using glue, you must use a cleaner and degrease all areas where it will be applied.
Applying glue. The glue must be applied thin layer to the places where the fittings will be installed.
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.
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 to each other and to metal pipes, you can install the pipeline yourself.

How to connect polypropylene pipes

Polypropylene pipes are used when installing water supply systems, for irrigation systems and during heating. The popularity of the material and various areas of use are due to its characteristics: strength, durability, ease of connection. An important argument in favor of polypropylene pipes was their price, which is significantly lower than that of metal-plastic or metal analogues.

The service life of a plastic pipeline with cold water is 50 years; such an impressive figure makes it necessary to replace outdated lines with this type of pipeline. Sealing of joints - most important factor for any pipeline, therefore the viability of the system depends on the quality of installation. In the article we will talk about how to connect polypropylene pipes with metal, polyethylene, steel, and also consider various welding options.

Materials and tools

Soldering iron for welding

If you decide to save on installation services and do it yourself, then you need to buy or rent a special soldering iron with attachments. In addition to this you will need:

tape measure and marker for marking;
scissors for cutting plastic pipes;
cleaning for pipes.

There are several types of polypropylene pipes, which differ in their area of use:

PN 10, 16 – used for laying cold water pipes;
PN 20 - universal pipes with thick walls, they can withstand hot water at temperatures up to 80ºC, therefore they are suitable for heating installations;
PN 25 is a composite pipe with a metal or nylon layer, which is peeled off during soldering. It is used for heating systems, the final heating temperature is 95°C.

Polypropylene pipes and fittings

Distinctive characteristic connection of polypropylene pipes is the absence of joints directly between the pipes. If their diameter is less than 50 mm, all parts can be connected with fittings for various purposes:

couplings - connect sections of the same diameter;
crosses - used to create branches;
plugs - seal the end of the pipe;
adapters - used to connect pipes of different diameters;
union fittings - connect to flexible hoses.

How to operate a welding machine

Welding polypropylene

The principle of connecting a pipeline is to heat the elements and quickly connect them. Household Appliances for welding pipes have a power of up to 1 kW. It is enough to quickly and efficiently heat the material, but for industrial purposes more powerful and expensive devices are used. The soldering iron comes with attachments that match the diameter various pipes. The pipe is heated from the outside, and the fitting from the inside.

The operation of the soldering iron begins with plugging into the network and installation desired temperature heating, depending on the diameter of the plastic pipes being welded. The average value is 250–270°C. Such a high temperature requires caution; touching a hot part will cause a burn; for safety reasons, you should wear gloves.

Soldering process

To cut pipes, use a hacksaw or sharp scissors that do not deform the plastic. The incision is made at a right angle. If burrs appear on the end, they are carefully cleaned off. After cutting, the soldering depth is marked. You need to measure the section of pipe that will fit into the tee or coupling and mark a line with a marker. The size of this section depends on the diameter of the pipes; the larger it is, the greater the immersion in the connecting element.

Pipe stripper

If you have to work with reinforced pipes, the algorithm of actions changes. Must be cleaned before soldering upper layer pipes consisting of aluminum foil, basalt or nylon fiber. A special tool is designed to remove the required layer size.

Careful removal of the foil is very important; a small amount of material remaining on the pipe will ruin the tightness of the soldering.

Reinforced pipe

A soldering iron with nozzles selected according to the diameter of the pipes is installed on a flat and durable surface. On both sides, a pipe and a fitting are simultaneously put on the heated nozzle, deepening to the intended line. The heating time of the plastic depends on the size of the pipes: for 20 mm, 6 seconds are enough, and for 32 mm, 8 seconds are required. After maintaining a set period of time, the elements are removed and firmly fixed into each other, while turning movements must not be made. For strong adhesion of the joint it will take from 4 to 10 seconds, during which time the polypropylene will harden and form a permanent connection.

Heating temperature and time

Failure to comply with the recommended heating time leads to the formation of leaks - due to insufficient heating or sealing internal space- with excessive overheating. If a melt appears, you should not try to remove it immediately; the melted plastic will become more deformed. You need to wait until it cools and cut off the excess.

Try to solder less by weight

Without experience, in order to understand how to solder pipes correctly, you can make several training connections. It is convenient to work with short connections by placing the welding machine on the table; in this position you can complete all possible job, and joining a partially laid highway is more difficult. The soldering iron nozzle is put on a fixed polypropylene pipe, and a tee is inserted into the second part, while the device is supported by weight. When making a highway, you need to monitor the order of the connections being made. Try to avoid docking hard to reach places where it will be difficult to use a soldering iron.

It is important to keep the material clean and dry, because dirt and moisture reduce the quality of the pipe connection. Even a small amount of moisture deforms the material when heated. Chemical composition pipes from different manufacturers may not match, this will lead to a leaky joint. It is necessary to buy all the material - pipes and fittings - from one manufacturer.

The temperature in the room where polypropylene is installed should not fall below +5°C.

Crimp connection method

Connection diagram using a collet fitting

Pipeline joining by soldering is reliable and durable, it is impossible to disassemble it, and sometimes this is exactly what is required for repairs. In addition, it is not always possible to purchase or borrow a welding machine; in such cases, they use the method of connecting polypropylene pipes without soldering. For this, fittings with threads and a clamping ring are used. They are called collet or crimp, such a connection can withstand a pressure of sixteen atmospheres.

For mechanical connection you need to purchase several additional parts: angles designed for joining of different diameters, a tee, soldered and combined couplings with external and internal threads, plugs, adapters with external thread, elbows and tees with union nuts, ball valves, various fittings with factory threads.

Clamp fitting structure

To ensure tightness, joints and seals are generously lubricated with silicone.

To work, you will need a crimp wrench, which can be purchased at the same time as the fittings. Having cut off the required part of the pipe, firmly insert it into the fitting, wrap the thread of the element with thread to seal it and tighten the ferrule and nut, completely tightening it with a wrench. This connection method takes much longer than welding, but it is convenient for connecting polypropylene pipes to radiators.

Compression fittings

Joining a steel pipe with a polypropylene pipe

When installing heating or plumbing, there are areas where metal and plastic need to be joined. The connection between a polypropylene pipe and a metal pipe occurs using special adapters. This fitting has a smooth hole for plastic on one side and a metal insert threaded. The polypropylene pipe is connected by welding, and the metal pipe is screwed with a wrench. The resulting joint does not have the strength of a welded joint, but will serve long term.

Connection with metal pipe

After complete installation of the system, it is necessary to conduct a test run of water to check the tightness of all connection points of pipes and other elements. If threaded connections are leaking, they must be tightened.

Self-installation plumbing or heating from polypropylene pipes is a completely doable task. To implement it, you must strictly follow the instructions for using the plastic welding machine and installation technology. To better understand all the nuances of the process, you should watch a video in which experienced installers share their experience.

How to connect a polyethylene pipe to a polypropylene pipe

To connect such pipes you need to use special fittings. Such a connection is necessary in cases where water was introduced into the house using HDPE pipes, and further wiring water supply inside the house is carried out by polypropylene pipes. So, we can distinguish 2 types of connections:

In the first case, you attach a threaded coupling to the HDPE pipe, where there will be a clamp connection on one side, and a similar coupling on the polypropylene one. It’s just that there will be a solder joint on one side, and a threaded joint on the other. In both cases, FUM tape or tow is used for threading to seal the joint and avoid leaks.
In another case, a flange connection is used. Installed between flanges rubber compressor. The flanges are bolted together.

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 when planning to make a replacement water pipes hot or cold supply yourself, you need not only to choose a joining method, but to stock up on the necessary tools.

Connection methods

Butt welding.
Socket connection.
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 is used.

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 outer part pipes abundantly, on inner part connecting element in a 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.

Connecting polypropylene pipes to metal pipes using special adapters greatly simplifies the work.

You can connect a metal-plastic pipe to a polypropylene pipe using 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 the threaded connections. In the case of hot water supply, check the system by supplying hot water.

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

Peculiarities

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

When butt welding, the walls should not be thicker than 4 mm. The joining surfaces must be trimmed, and strict parallelism of the connected elements must be maintained. When docking, it is recommended to use special guides.
Since threading cannot be done on a polypropylene pipe, they are used for threaded connections. threaded fittings, and to ensure the tightness of the connection, a sealant and Teflon tape are used.
When welding polypropylene pipes, it is necessary to ventilate the room. At negative temperature This type of work cannot be carried out indoors, since joining when the elements are insufficiently heated does not guarantee the tightness of the connection.

At welding work with polypropylene pipes, you need to heat the soldering iron to the desired temperature and place it on the stand. When working, you should observe safety precautions, since we are talking about a high temperature of 260 C.

To ensure a high-quality connection of elements, it is necessary to maintain 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?

To install polypropylene pipes, you will need special tools for cutting and connecting elements.

The list of tools includes devices such as:

pipe cutter;
welding machine;
stripping;
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 a perfectly even cut, it will not allow the formation of burrs on the cut surface. When choosing a pipe cutter, you should consider the following: important parameter, as the minimum and maximum pipe diameter. You should choose a tool 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. The welding machine requires a pair of Teflon-coated nozzles. It should be chosen from well-known brands that have proven themselves in the market, since tools from dubious manufacturers may fail during operation, which will stop all work.

Stripping can be done manually or in the form of an attachment to a drill.

To strip the outer layer, couplings with internal knives (shavers) are used. Select the required coupling for the diameter of the pipe being cleaned. They also use double-sided couplings that allow you to work with different diameters. To clear inner layer pipes, take a trimmer, which has knives inside. The pipe is inserted into the tool and rotated several times.
Strippers in the form of attachments 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.

Methods

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 is 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 to the 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. Typically, fittings are installed on bends and branches of communications. The fitting includes elements such as a cover, a sleeve and a clamping ring, which is located in the socket of the product. The pipe is fixed using the seam ring included in the fitting design.

When connecting fittings, you must observe step by step plan actions:

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

Connection using flanges is considered very reliable and can withstand high temperatures and high blood pressure. 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 flange thread.

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

at the pipe connection 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;
The gaskets must be installed in such a way that their cross-section does not touch the bolts;
More than one gasket cannot be installed on a flange, as this will reduce the tightness.

Connection using couplings. To connect with couplings, you need to make a thread on the pipes for their subsequent installation and, to make the connection tight, wrap a little tow around 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 lubricant to the coupling and install it on the pipe in the previously marked place.

Welding refers to the hot joining 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 required temperature are pressed tightly against each other, and after they cool, a reliable connection is formed. The time after joining until 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 to a temperature of 260 C;
you need to put the device nozzles on the propylene pipes to be connected - this needs to be done very quickly;
when the elements to be welded begin to melt, they are removed from the apparatus;
connect the molten elements to each other by pressing firmly for 15 seconds;
The connected elements must be allowed to polymerize to fully set - this usually takes about 20 seconds.

Common mistakes when connecting by welding:

displacement of elements during welding at the moment of their heating;
when joining elements, they must not be rotated - otherwise the seam will 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 other has a thread for a metal pipe. With this type of connection, the pipe diameter should not be more than 40 mm.

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

The tow should be applied to a maximum of two turns and in the direction of the thread.

Sequence of actions for the threaded installation method:

the pipe is cut at a right angle, its end is lubricated with grease, and then a thread is applied using a thread-cutting tool;
remove all shavings 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.

Polypropylene pipes can be connected either by welding or cold. Greater preference is given to the first option, since it is considered the most reliable and durable.

Welded joint

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 is necessary for any type of PP pipes with the exception of those reinforced with foil. For a reinforced pipe, the cut is cleaned using a special cleaning tool (shaver), into which the desired end of the pipe is inserted and turned several times. After cleaning, the upper part of the pipe must be degreased.

You must mark the pipe with a marker, marking the required distance to press it into the fitting. Then the end of the pipe must be placed on the mandrel and the fitting must be inserted into the sleeve of the welding machine. All actions should be done very quickly and clearly. After this, the connected elements are heated for a strictly allotted time.

After the elements to be welded have melted, they must be removed from the nozzles and the pipe quickly pressed into the fitting. The connection requires some force, since the elements to be welded must be pressed tightly and held in this position for some time. You should not clamp the joining elements for more than 20 seconds, as this time is quite enough for them to firmly set. After connecting, be sure to let it cool for a few minutes.

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. 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 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

Solder plastic parts possible 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.

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 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.

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.

The packaging also indicates the maximum permissible temperature value for specific 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.

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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

Drawing up a detailed diagram, marking 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 it on a picnic small awning, 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 construction hair dryer, which will have a special crevice nozzle, as well as a patch with a roller. After pre-cleaning areas of damage and patches from dust and grease, it is necessary to place the awning on a 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

Although regular soldering iron 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

The paste is used to join various metals such as steel, nickel, copper and others. The reason for this versatility is that this material 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.

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How to connect polypropylene pipes without soldering?

Cold connection of polypropylene pipes

General information

copolymer;
block copolymer;
homopolymer.

The above products can be connected in various ways. Many people use the connection of polypropylene pipes without soldering.

Advantages and disadvantages of solderless connections

This method has several serious advantages, due to 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 using 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 hot water pipes. During installation, glue is used, which is applied to the parts.

Fitting

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:

Pipe cutting. They must be cut at right angles.
Removing hangnails. The surface of the products that will be placed in the fittings must be perfectly flat.
Installing the nut. It is removed from the fitting and installed on the pipe, after which the clamping ring is put on it.
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. When choosing the 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

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:

Degreasing. Before using glue, you must use a cleaner and degrease all areas where it will be applied.
Applying glue. The adhesive should be applied in a thin layer to the areas where the fittings will be installed.
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.
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 a special purpose adhesive 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. 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 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. 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 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 structure is formed monolithic type, 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. The service life of a pipeline installed using this method can reach 50 years.