Pipe heating connections. Connection of heating pipes from various materials Express Calculation of the cost of the heating of a private house

It is unrealistic to imagine the livelihoods of living in our country without a heating complex of the cottage. Absolutely in every region of the Russian Federation there is a need for the winter period to give the cottage. Each person prefers to receive information: how to improve the system of the house. Each Russian is known that oil, coal, gas is permanently become more expensive. On this web resource, many heating systems of apartments were published using extremely different methods of heat extraction. Published heat production schemes can be mounted as a separate complex or combine.

The main carvings of the general engineering application today is the ISO carving, which has two executions that match all sizes: Metric M, most common in Europe, and unified national UN, common in the United States. This carving is applied in all industries (except for the oil sorting).

For fittings and compounds of gas, plumbing and sewer fittings, an inch carving of the cake of BSW is used, which corresponds to GOST 6357-81 on the tube cylindrical thread. This thread is recommended for replacing the ISO thread.

The US National National Pipe Thread, used for fittings and connections, corresponds to GOST 6111-52 on a conical inch, as well as the British standard tube conical BSPT carving corresponds to GOST 6211-81 on the tube conical thread.

To prevent leakage of gases and liquids through pipe compound fittings, it is necessary to ensure the sealing of the thread. To solve this problem, various types of seals are used. Consider the advantages and disadvantages of these methods:

Linen strand With lead Surikov on Olife still a very common way in our country. Almost in this method, the entire installation of water pipelines, heating systems and gas pipelines is based, since it is so indicated in SNiP for plumbing systems and for gas supply. It is often used by an iron audi, which, unlike lead turbine, does not protect the surface of the carving of steel fittings from corrosion. Also known to substitution of this type of seal on the "dry strand", that is, without any paint, which causes significant corrosion of the thread.

Advantages: low cost and availability of materials for sealing. Robust fixation, both due to the high effort that occurs during the tightness, and at the expense of the adhesion after drying the olifa.

Disadvantages: the need for professional skills to ensure high-quality compound assembly. Great fifth tightening efforts when assembling, with the danger of destruction of parts. Method of dirty hands and evaporated tool. When the heating systems are sealing over time, thermal destruction of flax fibers leading to leaks is observed. Difficult disassembly of the compound, as a rule, heated fittings to flax burning temperature.

Unlock pasta are a convenient and simple method of sealing pipe connections. Such seals are a viscous product based on synthetic resins, oils and fillers. It is used specifically in specific cases at certain modes of operation.

Advantages: Lubrication of the surface of the thread and corrosion protection. Prevents jamming in the thread when assembling. Easy assembly of fittings, easy disassembly. Technological and convenient method for low pressure pipelines.

Disadvantages: Seal securely to a certain pressure. Excess pressure causes a gradual extrusion of the compaction from the threaded gap. Lack of strong fixation of the compound and low resistance in some environments. It is not used to seal compounds with a very small threaded gap.

Solvent-based sealants are drying pasta. The method of sealing threaded compounds is logical from a technical point of view. In our country, it is widely applied quite recently, and usually together with a flax strand, which reduces the manufacturability of the method.

Advantages: Provides thread lubrication. The composition dries in the gap and acquires resistance to extrusion from the gap under pressure. Good compound fixation.

Disadvantages: With a large thread clearance, the possibility of shrinkage sealant in the drying process, due to the evaporation of the solvent. An additional fitting tip may be required.

Tape Fuma. Tape made of thin fluoroplastic film. It is widespread due to the fact that in recent years it is easily possible to purchase this material, which was sharply deficient three decades ago.

Advantages: Easy to twist fittings, thanks to antifriction properties. Excellent chemical resistance. It can be used for sealing in oxygen medium.

Disadvantages: unsatisfactory reliability of sealing. With temperature moves of pipelines, especially characteristic of hot water, the tape is slipped from the thread clearance, which leads to leaks. The method is not suitable for compaction of compounds subjected to vibrations. Low reliability of fitting compaction with low quality of the surface of the pipe thread, as well as when sealing pipe threaded connections with a diameter of more than 3/4 inches.

Universal thread for seals. Nylon cord, impregnated with a special sealing composition ("Uninfield", "Lokate 55" made in the European Union, winding for the "record" pipes manufactured in Russia).

Advantage: The most technological seal method is currently. The obvious simplicity of application and high reliability of the seal at the low value of the material. This product is designed for such an application as a water supply of cold and hot water, heat seafood with a temperature of up to 130 ° C, pipe compounds of natural gas supply systems, compressed air. Material can be used on wet thread or at low air temperature, when using other methods is not technologically.

Disadvantages: unsuitability for seals operating in oxygen, petroleum products, the need to obtain roughness on the surface of the thread in cases of a very smooth surface, limited use when a threaded compounds of pipes of large diameter are sealing.

Anaerobic adhesives - sealants. These are liquid products of various viscosity, which can remain in air in a stable state without changing properties. But when these compositions fall into narrow gaps between metal surfaces, then there, in the absence of oxygen air and under the influence of metal, are quickly polymerized without shrinkage, forming a durable, solid, thermosetting plastic, filling the threaded gap. As a result, reliable tightness is provided independent of the working pressure and the force of the connection of the compound. Such an anaerobov property to harden only in a small gap is valuable, since the working channels and valve seats do not clog, and excess glue remains liquid on the open surface and are easily removed.

Benefits:

Limiting simplicity;

Ease of assembly due to the lubricant properties of the composition;

Compact the threads regardless of the effort of swing;

The ability to work at high pressures up to a pipe break

Ensure the conditioned effort of a breakdown in disregarding when dismounting;

Do not harden on the open surface, excess the product is easy to remove;

The best economic efficiency of the combination of "price-reliability".

Disadvantages:

Not suitable for seals operating in oxygen and strong oxidizing medium;

Not used at low temperatures due to the slowdown of polymerization,

Used only on a dry sealing surface of the thread.

The unusual properties of anaerobic products make them extremely useful for use in industry, so it should be part more on the features of these compositions.

Features of the anaerobic adhesives for the sealing of threaded connections

Anaerobic sealants This is a wide range of ready-to-eat products, so when choosing the necessary product, it is necessary to know in advance and take into account various factors affecting the operation of the connection during its service life. Since the compounds must remain sealed with strongest vibrations, the effects of the medium, pressure fluctuations and temperature, it is necessary that the sealants are completely filled with a sealable gap. When choosing the desired margin of anaerobic sealant, it is necessary to consider the thread diameter: the composition developed for a thread with a diameter of 8-10 mm cannot be used on 80 mm fittings, since these compounds have a different clearance in the thread and therefore products of various viscosity are required.

Cleaning the surface of the carving from oil, dirt, and moisture is necessary in order for the sealant to have a wetting ability to cover the threaded surface. If you apply a drop of liquid (glue or water) to the surface, and it is assembled into the ball, then the surface must be cleaned until the fluid becomes spread on the surface. Separate marks of anaerobov can be applied to a slightly grilled surface of the thread.

Anaerobic sealants are easy to apply manually directly from the bottles. With large volumes of sealing, devices of various designs are used, from simple manual dispensers to semi-automatic and automatic installations. When assembling pipe connections with cylindrical or conical carvings, the sealant is applied both to the outer and the inner surface of the thread.

Different marks of anaerobic products have different primary setting speeds, providing mounting strength of the connection: from 3-5 minutes to several hours. This allows you to solve various technological tasks, in some cases quick installation requires, in others - the subsequent adjustment of the position of the parts of the parts connected.

Anaerobic compositions provide simple disassembly during the repair, due to the lack of corrosion and threads in the thread. Although the plastic hardened in the gap has a stopping property, the dismantling of fittings is carried out using conventional tools.

Ceremony plastics are not toxic, so anaerobes are used in the food industry of many countries.

Most anaerobic sealants are able to withstand operating temperatures from -55 to + 150 ° C. The short-term effects of higher temperatures does not have a significant effect on the sealing properties of the product. There are compounds that can withstand temperatures up to 200 ° C and higher.

So, the following factors should be taken into account when choosing anaerobic product:

Required chemical resistance to the working environment;

Restrictions on the maximum diameter of the connected pipes;

The magnitude of the gap in the thread of the compound;

Dismantling conditions;

Polymerization time of glue-sealant.

Anaerobic materials that have passed perennial tests in military and aerospace technology have been widely used in various areas of mechanical engineering, in construction for sealing pipelines, during equipment repair. They provided a qualitatively new level of solving the problem of fixation, sealing and sealing in modern techniques.

The cost of anaerobic adhesives-sealants may exceed in some cases the cost of other seals. However, in reliability, they significantly exceed all other methods and these costs are minimal compared to possible damage and losses in case of deployment of the connection.

In conclusion, it should be noted that for widespread use, the most reliable methods of sealing pipe threaded compounds are the use of anaerobic products. However, under conditions, when the air temperature during the mounting of the pipeline is below 15 ° C and does not use the activator-accelerator, or there is no possibility of local heating, as well as in the case of wet threads of the compound due to leaks on locking devices, the use of anaerobes is difficult.

The use of a specially impregnated polyamide winding for pipes, with such constraints, is a more appropriate method of sealing pipelines with hot and cold water.

Better juggling than a screwed nail.

Source: http://rexmill.ucoz.ru/forum/15-44-1

What pipe connection will be the most reliable and optimal - press fitting, threaded or plug-in? Many developers in the installation of the heating system of the house are thinking over this issue.

In this case, the plumbing specialist is facing not only connective systems, but also pipes from a particular material - stainless steel, copper, plastic.

Quickly and reliably: pipe connection of copper pipes using press fittings

Among the pipes are now widely used copper, which can be connected in various ways. Along with soldering, the compounds on the press fittings showed reliable. In this case, stripped from burrs and calibrated pipe ends are inserted into the so-called press fitting and crimped with special ticks or press pistol.

On the threaded fitting with special ticks stretch the plastic tube

Rapex Multi press fitting (VELTA) connecting flexible plastic pipes of the heating system. Using ticks, crimped the bushing on the pipe.

Nevertheless, a specialist in coordination with the developer, as a rule, preferences the latter between the plug-in and compound on the press fitting. The performance of plug-in compounds is spent less time. However, fittings are more expensive for them than fittings for soldering and pressed compounds, besides, they are not suitable for laying pipes of larger diameter.

JRG SANIPEX MT system: put on a pipe with a cap nut, the end of the pipe flashes to the formation of the termination, wear the pipe on the fitting and screw the cap nut.

Through the "viewing window" you can check the planting of the pipe in the fitting. Here - a connecting element from high-grade steel for heating battery

The connection of copper pipes: placing the depth of the landing in the fitting.

. Remove burrs at the ends of the pipes, insert pipes in the fitting (IBP) to their contact with each other. Pipe compound is executed.

Compound of pipes with multiple crimping (designated by blue). The tensile strength of such a compound significantly exceeds the same indicator of soldering connections.

The feature of the connection using Viega's press fitting: if the fitting forgot to suggest, it will be found immediately.

Plug and pressed compounds of plastic pipes

Question "Insert or Press Press?" It occurs when laying pipes not only from metal, but also (even more often) from plastic. Until now, at least with the introduction of flexible pipes, compounds pressed, threaded, clamping or (from relatively recently) plug-in were used.

Flexible flexible plastic pipes are rectified with a pipe-based device, preparing them to use the heating system in the pipeline.

Straightened pipes are connected in a plug. A slightly perceived light click indicates that the connection is made correctly (FRIATEC).

The advantage of all flexible pipes is that they can be laid directly from the roll, so that, in the perfect case, only two compounds are enough between the heating battery and the distribution device.

Additional fittings on bends, for example, in the corners of the room, are not needed here. Simultaneously with the accelerated gasket of such pipes, the risk of non-thin pipe connections is reduced. The disadvantage of flexible pipes is that they are unsuitable for use as risers. For this, most manufacturers offer pipe systems, as a rule, from copper, extrusion plastic or steel.

Here we denote the main nuances of how to connect plastic pipes of heating:

The optimal heating time of the solder apparatus is 5 seconds.
Recommended melting point of polypropylene 270 ° C. This parameter can be achieved using a special toggle installed on the welding machine.
It should be noted that the technology of docking pipes of the heating system will vary depending on the place and time of the year. So, in a period of minus temperatures, either when installing the heating construction outside the room, the heating time of the soldering iron should be slightly increased or lifted the temperature for melting polypropylene products.
In case of docking pipes of a larger diameter, the melting time of the material will also increase slightly.
The recommended time for fixing the elements of a large diameter among themselves after their heating is from 30 seconds and more.

After reaching the required temperature, on the tip of the soldering iron for polypropylene pipes - for the external and internal size of the cross section of the pipes, the connecting parts (clutch, pipe) are also put on and warmed up and heated.
At the time of the heating process, "beam" are formed on heating elements.
According to the result of the heating process, both parts are removed and docked with each other in each other in the direction of each other and fixation in such a position. Any rotations and extra movements during the connection of the elements are not allowed, as it can break the resulting seam.
The connected elements should be retained for 30 seconds for a more reliable adhesion of the heating system parts. It is necessary to add that the side must be smooth along the entire length of the connection.

After complete cooling, the connected details are ready to use.

Parameters of the welding process

Ways of dusting pipes from metal plastic and pex pipes

Metal-plastic elements and PEX pipes are often docked using the same method. Here we describe in detail the technology of mounting the heat pipe from the above materials.

using compression fittings;
with the use of press fittings (crimping pipe heating).

Docking pipes compression fittings

This type of fittings is more convenient in operation. Compression fittings can also be used to assemble cold-type water supply systems. The installation of a pipe conductive hot water is also carried out by the builders with the help of the fittings mentioned.

When assembling the above pipelines, the need for special equipment for crosslinking metal plastic and polypropylene disappears. In order to combine parts of the pipes, only a pair of spanning keys and a secator scissors will be required.

The connection of heating elements is performed according to the following action algorithm:

Initially, the crimp nut is placed on the end of the pipe from the docking side.
Next, you should wear a split-type ring behind the nut, and the edge of the ring must be placed at a distance of 1 mm relative to the cutting of the pipe.
Then the pipe is satisfied until it stops and fixes on the fitting fitting. At the same time, the chamfering from the pipe is not required.
The crimping nut is installed by means of wrench.

Parts of compression fitting and assembly order

When clamping the nut, the implicit efforts are not recommended, since the likelihood of the pipe is high.

Docking pipes using press fittings

Fittings for press type for metal-plastic pipes, as well as cross-linked polypropylene make it possible to securely connect parts of the heating system. Unfortunately, such a design will not be disconnected in the future. To make installation, this method will require the use of a special press tool.

In order to connect the previously mentioned elements of heating using fittings, you should follow the following instructions:

At the end of the pipe, it is necessary to wear a cylinder of a clamping type.
Then the extender with the desired cross section is placed in the pipe until the stop.
The handles of the expander do not rush together and fix in this position for a short time.
Fitting fitting is inserted into the pipe. Due to its unique molecular composition, the pipes are subjected to shrinkage, which will help tightly fix the fitting with the pipe.
The pipe with the help of a manual or hydraulic press is reliably pressed on the fitting.

Pressing with a special tool

Installation of steel pipes

Pipes made of steel can be docked among themselves the following methods:

threaded;
welding;
coupling;
flange.

Compound by a threaded method

In this case, the threaded connection of the heating pipes is recommended to be used in those places of heat resistant, where you can control the reliability of pipe docking to facilitate the further repair of the heating system. In most cases, the carving is done on pipes using special tools, although the manual method here also takes place.

In order to carry out this procedure, it is initially necessary to remove the extreme part of the pipe, providing the required battery length for the thread. Then, through a dice, cut a threaded connection. The operation is carried out using a tool fixed on the plash-container.

Cutting thread

Working with the aforementioned fixture looks about this way:

Pipe is fixed in vice to prevent scrolling.
The dye neatly puts on the tip of the pipe. It should be extremely attentive, in order to prevent the skew in the connection.

It is also worth lifying and some recommendations:

To facilitate work, the surface of the pipe is treated with automatic oil.
If there is a need for cutting the thread on the pipe section close to the wall in relation to the wall, then in this case you will have to resort to the help of plastics holders with a ratchet mechanism that will make a complete turn of the tool on its axis.
In the case of compaction of the compounds of individual elements of the heating system, a special winding for the heating pipes of a plumbing type is used.
Before twisting the connection on the thread, check the connections for the presence of stuck chips and burrs.

The pipe connection by welding provides high reliability and long service life of the heating system. The principle of welding individual elements of pipelines among themselves is almost the same, regardless of the material from which they are made (metal or plastic). Differences are mainly related, with a difference in the designs of welding machines and methods of their operation. In particular, the welding of metal heating pipes requires professional skills, while the compound of segments of plastic with the help of the couphic welding method even an unprepared person can perform.

What you need to know about welding heating pipes?

Welding is one of the most popular ways to connect separate sections of heating systems. Modern technologies allow you to perform seams that are practically not inferior by strength to solid areas of pipelines. This moment is very important, since the working pressure and temperature in heating systems can be high enough. The manifold of welding methods allows the most suitable solution for each specific situation. Wherein it should be remembered that any, even the most insignificant, deviation from technological requirements can lead to depressurization of the seam.

What is necessary?

For the successful performance of welding, two components are required: equipment and skills. And the second item is no less important than the first. An exception can be, perhaps, only welding with the use of electrophes, as the simplicity of technology allows you to qualitatively compound even a non-professional.

In all other cases, the participation of a specialist is desirable. We must not forget that the disruption of the tightness of the weld in the heating system can lead to very unpleasant consequences. (spurious property, including someone else's burns, etc.).

Instruments

A set of tools and equipment necessary for the production of welding works is determined depending on the type of pipes used to arrange the heating system, as well as the selected welding method.

First of all, it is a manual welding machine.

The device for connecting polypropylene pipes is also sometimes called a soldering iron. For household needs, the device is quite suitable, the power of which is 650 W. It can be used to connect plastic pipes with a diameter of up to 60 mm. Nozzles come in a set with the device.

Manual welding machine

When using electrophes, a special device is also required for connecting them. In addition, roller pipes, positioner, special devices for removing oxidation and centering of pipes, knife, hammer, and consumables (couplings, electrophings, etc.) can be useful in the process of work.

Welding of metal pipes is performed using an electrical or gas unit. For cutting used "Bulgarian" or cutter. In addition, the usual appitation of the welder will be required: mask, tarpaulin suit, mittens, asbestos, hammer, electrodes, wire, etc.

Electric and gas welding machines

Technology welding metal pipes heating

The most common way to connect metal pipes when installing heating systems is electric welding. This method is based on the use of electrodes with high electrical conductivity. They perform the "additive" function, which fills the welds.

The strength of the entire heating system depends on how high-quality welded joints. Therefore, when installing pipelines, it is necessary to thoroughly comply with the technology of electric welding work. In particular, the following rules are required:

at the stage of preparatory work, remove dirt, dust and sand from all parts;
if the ends of the tubes are deformed, they need to be right or smoothly cut;
if arc welding of the edge is performed, the surface of the welded parts from the inside and outside should be cleaned about 1 cm from the edge;
the welding of elements around the circle is performed in continuous mode.

The number of welding layers is determined in accordance with the wall thickness of the connected pipes:

less than 6 mm - 2 layers;
6-12 mm - 3 layers;
more than 12 mm - 4 layers.

Before proceeding to the overlapping of each subsequent layer, it is necessary to remove the entire slag from the previous

When the first layer of welding is applied, the method of stepped surfacing is usually used, and all subsequent is solid. A stepped apparatus is divided into sections by tapes. This uses electrodes with a diameter of 2-4 mm. Then the sections located in one are connected. After that, the connection of the remaining sections is performed.

The formation of the first layer requires a particularly attentive relationship. It is necessary to ensure that all edges of the welded pipe segments were completely melted. When identifying a marriage (for example, cracks), this area will have to cut out and start all the work first.

The second and subsequent layers are superimposed on the first with slow and uniform turning of the pipes (swivel joint). If it is impossible to rotate the pipe, you have to perform a non-turning junction. This operation requires high welder qualification. They are performed by the electrodes of a larger diameter compared to the first. The beginning of the subsequent layer should be approximately 30 mm shifted relative to the beginning of the previous one. The finishing seam should be smooth and smooth. It should be applied in such a way that it is smoothly switched to the main metal pipe.

View of the finished welding seam

Technology welding plastic heating pipes

The process of welding polypropylene pipes requires significantly smaller professionalism compared to metallic. They are connected by the method of diffusion welding. Its essence is as follows: individual elements of the system are heated using a special device (soldering iron) to a temperature that allows them to perform their pillars. It is important to take into account that all parts used should have the same characteristics. When using polypropylene, welding of heating pipes can be performed with their own hands.

When welding polypropylene pipes, it is impossible to forget about the following nuances that can negatively affect the quality of work:

heating of pipes by a soldering iron takes about 5 seconds;
melting polypropylene begins at a temperature of about 270 degrees. You can set the necessary value by means of a special regulator, which is equipped with each device;
process parameters are sometimes subjected to some changes depending on the air temperature at the work site. For example, in the cold season, it is necessary to either establish a higher melting point of pipes, or increase the heating time;
the heating time must be increased in proportion to the increase in the diameter of the connected pipes;
the docking of the heated parts is performed for 30 s. If the pipes have a large diameter, this time can be increased.

The nozzles that are equipped with a soldering iron, simultaneously warm up the external and inner surface of the combined parts (clutches and pipes). In the process of heating at the ends of the parts, flames are formed. Heated parts are removed from the nozzles, after which they immediately join them between themselves, evenly pressing on both sides. After the elements are connected, it is important to ensure their immobility, since any displacement can lead to a violation of the connecting seam.

To ensure reliable clutch, the connected parts need to withstand together 30 seconds (or more if the pipes have a large diameter). The sibor formed in the connection site should be uniform.

In case of insufficient heating, the connection will not be high quality. However, it is impossible to overheating the pipes too: this may lead to a narrowing of the working lumen. Brown color when heated indicates that polypropylene begins to burn.

An even more simple procedure for installing heating systems using electrophings. Even a person who does not have a detailed idea of \u200b\u200bhow welding heating pipes is made. Two cuts of the pipe from different sides are inserted into the coupling, after which the voltage from the welding machine is supplied to it. The material is melted, as a result, it turns out very reliable seam.

Options for welded connections

There are many different types of welded connections. In particular, they can be:

longitudinal butt with one or two-sided seam;
transverse butt with an inner boring or without it, with a bevel edge or without;
contact butt;
single or double-sided corner;
open.

The most widely used in welding of pipelines of heating systems was covered with a transverse seam. This is explained by his high strength. Welded seams can be:

one-sided;
bilateral;
one-sided with a lining ring.

Verified pipe welding technology

One-sided seams are used when welding pipes with an inner diameter of up to 500 mm.

The sprocket compound is less durable. It is used for welding plastic pipes. The end of the pipe at the same time must be collapsed.

Also, metal and polypropylene tubes can be connected using couplings.

Typical welding of steel pipes

Outcome

Welding is widely used to connect the pipes of heating systems made from various materials. It provides high strength and reliability of the joints, which allows it to apply it in high pressure and temperature conditions. The manifold of welding methods allows you to choose the most suitable version of the pipe connection in specific conditions. Modern technology docking pipes from polypropylene allow you to install even a person who does not have high qualifications in the field of welding.

Welding polypropylene pipes - video:

This video will show you how welding pipes of heating, as well as repair pipe heating without welding.

What pipe connection will be the most reliable and optimal - press fitting, threaded or plug-in? Many developers in the installation of the heating system of the house are thinking over this issue.

Soldering is just one of the types of pipe connections of metal pipes. However, modern plumbing technologies offer a wide range of ways to install pipes, combined by the concept of "cold compound". We are talking about pressed, threaded and insertion connections using various connecting elements (fittings). The advantage of these technologies before soldering is that they fully meet the requirements of fire safety and speed up the work on the installation of pipelines.

In this case, the plumbing specialist is facing not only connective systems, but also pipes from a particular material - stainless steel, copper, plastic.

Quickly and reliably: pipe connection of copper pipes using press fittings

Fitting for soldering connections is a simple copper sleeve, into which the pipe is inserted and searched.
In contrast to the fitting for soldered compounds, the press fitting has a more complex design and is equipped with two sealing rings providing a pipe connection density after pipe compounds. It is, naturally, it is more expensive, but the price difference is compensated by winning in labor costs.

In comparison with the solder, the compound on the press fittings has a higher tensile strength, which when laying pipelines for a greater distance, for example, under the flooding of the basement, it allows you to manage a smaller number of mounting anchors.

Combined fittings for connecting plastic pipes (Unicor)

More simpler compared to soldered and even compounds on press fittings are plug-in pipe connections carried out on special fittings for copper pipes. And in this case, before inserting into the fitting, the pipes are cleaned with burrs and calibrate. An experienced plumbing is able to perform a plug-in connection in seconds. To perform the compound on the press fitting, the specialist will take about two minutes, and on the solder - three with more than a minute, and even more (depending on the diameter of the pipes).

Rapex Multi press fitting (VELTA) connecting flexible plastic pipes of the heating system. Using ticks, crimped the bushing on the pipe.

JRG SANIPEX MT system: put on a pipe with a cap nut, the end of the pipe flashes to the formation of the termination, wear the pipe on the fitting and screw the cap nut.

Through the "viewing window" you can check the planting of the pipe in the fitting. Here - a connecting element from high-grade steel for heating battery

The connection of copper pipes: placed on the ends of the pipes landing depth in fitting ...

... Remove burrs at the ends of the pipes, insert pipes into the fitting (IBP) to contact them with each other. Pipe compound is executed.

Compound of pipes with multiple crimping (designated by blue). The tensile strength of such a compound significantly exceeds the same indicator of soldering connections.

The feature of the connection using Viega's press fitting: if the fitting forgot to suggest, it will be found immediately.

Plug and pressed compounds of plastic pipes

Flexible flexible plastic pipes are rectified with a pipe-based device, preparing them to use the heating system in the pipeline.

Straightened pipes are connected in a plug. A slightly perceived light click indicates that the connection is made correctly (FRIATEC).

The compression of high-grade steel pipes, distinguished by high corrosion resistance. Such connections are performed relatively quickly (Mapress).

Combined metal-plastic flexible pipes (RE or PB) are widely used. From all plastic pipes, the pipes of re-x (from very dense polyethylene, characterized by high resistance to chemicals, shock loads, pressure, high and low temperatures) are most popular. And these pipes have a protective layer (usually from aluminum), providing an obstacle for oxygen, which is especially important when using pipes in heating systems.

And Pipes of re (or PB), and the pipes of the re-in work are identical. And those and others can be connected in different ways. When composing with compression, the pipe is put on the fitting, and the pipe is a metal sleeve, which is crimped using press ticks. Such a pipe connection is indefinite.

The principle of the clamping compound is known to many on working with the watering hose and is as follows. A naked nut is put on the pipe, the fitting itself has a cone, which, when screwing off the cape nut, presses on the pipe. This connection is connector.

Combined pipes of re-x (Roth) with aluminum middle layer Laserpex. You can connect the crimping pipe with a diameter of 40 and 50 mm for risers by fittings from tin-zinc bronze PPSU.

Threaded connection is similar to clamping. And in this case, the cape nut is worn onto the pipe, but then the end of the pipe is fragmented (so that the nut can slip). After that, it remains only to connect the pipe with the fitting on the thread.
In recent years, the so-called plug-in connections have become widely used to sprinkle plastic pipes, where the pipe is inserted into the fitting. The compound is performed in such a sequence: the pipe is cut down in length, the burrs remove, calibrate and put on the fitting. Special tool is not required here.

Master all the listed ways to connect the pipes to the home master is hardly under power. And first of all, because many new items in this area are not available. The fact is that the expensive tube special tool is not so easy to purchase, and it will be used inefficient.

July 25, 2016
Specialization: finishing of facades, interior decoration, construction of cottages, garages. Experience and gardener and gardener experience. There is also experience in repairing cars and motorcycles. Hobbies: the game is not a guitar and a lot more, to which there is not enough time :)

The question of connecting pipes without welding is always relevant, since the welding machine is far from every domestic master, and not everyone can use it. At the same time, no pipeline is eternal, so such a need may arise in the country, in a private house or in the apartment at any time. Below, I will share with you some secretons of specialists who allow you to perform similar connections without welding.

Metal

First of all, it should be said that all existing pipes can be conditionally divided into two types:

metal;
plastic.

As a rule, the most problems arises with the docking of metal pipes, so first consider the methods of their compounds.

So, there are several options for hermetic docking:

Below more for more information with each of these options.

With the help of a threaded coupling

Most often, metal pipes without welding can be docked using a threaded connection. In this case, respectively, cutting threads. It should be noted that this is not such a complicated procedure, as many may seem at first glance.

To cut the thread you will need an electric thread slicer or a dice for manual execution of this operation. Since the price of an electrical tool is very high, below I will tell you how to perform work manually:

first of all, you need to clean the surface that is subject to thread cutting. If there are metal surges on it, for example, remaining after welding, they must be dried;
next you need to remove the outdoor chamfer from the end using a file;
then, on the prepared end, it is necessary to put on Lerch (cry) and make the floor turnover. At the same time, it is necessary to ensure that the dice makes it strictly perpendicular to the axis;
next you need to perform a quarter turn back;
this principle cuts the thread to the required length.. In the process of cutting, the cutters need to be lubricated with a special liquid or any other lubricant;
then, according to the same scheme, cutting threads on another connected part of the pipeline.

For coupling mounting on one pipe, the length of the thread must be several times longer than on the other, so that it can be turned onto it clutch with a nut.

After cutting, the thread can do it with your own hands to perform a coupling compound, which is performed as follows:

a nut and then a clutch is screwed onto a long thread;
on the second end of the detail the nut is screwed;
next, the pipes are connected, and the coupling is folded with a long thread, as a result of which it begins to wind up onto the second part with a short thread. This procedure must be performed until the joint place will be approximately in the middle of the coupling;
then the nuts are screwed from both sides. Before tightening them, there should be a clutch between couplings and nuts.

This compound is reliable and durable. However, it is not always possible to cut a thread. If, for example, the pipeline is located close to the wall, it is hardly possible to perform this operation.

Coupling gebo connection

Gebo's coupling ("Gebu" or "Gebra") is a special compression fitting. With it, you can perform a combination of steel pipes without thread and welding very quickly, and for this you will not need any special tools.

The scheme of its use is extremely simple:

details are put on the pipe in such a sequence:

nut;
clamping ring;
clamping ring;
sealing ring;
coupling;

then you need to wear a coupling of half and tighten the nut;
next, the second item is connected to the fitting in the same sequence.

It must be said that this fitting exists both in the form of a coupling and in the form of a tee. This allows you to use it in cases where you need to perform insert, for example, in the riser for performing a wiring.

As for reliability, it depends on the quality of installation. If the work is performed correctly, this installation is reliable and durable.

Connecting pipes without welding and threads can also be used by the repair and mounting rope. This fitting is a coupling or a tee, which consists of two parts. Both halves are tightened with each other with bolts.

It should be noted that the repair and installation rows are intended primarily to perform temporary repairs, for example, in the event of cracks. However, in emergency situations with their help, you can also join pipes, especially if the pipeline does not work under high pressure.

In this case, the installation instructions looks like this:

first of all, the parts of the pipeline parts that fitting will be put on, it is necessary to clean from rust and all kinds of irregularities so that their outer surface is absolutely smooth;

then it is necessary to wear a rubber seal on the pipe. The incision of the seal must be missed with silicone sealant. It should be noted that the seal must fully cover the pipes so that no gap remains.
next, both halves of fittings are put on the rubber sealer and are tightened by bolts, as shown in the diagram.

This method, as we see, is also extremely simple. By the same principle, the compound is combined with a coupling. The difference lies only in the fact that it is delayed on the one hand, not two.

It must be said that if using pipe clamps - a connection of pipes without welding, it turns out even more reliable than using the mounting and repair clutch.

If you need to combine profile pipes without welding to build any design, you can also take advantage of special profile clamps.

Plastic

If you need to assemble a plastic pipeline, you can use compression fittings that work on the same principle as the GEBO clutch. Most often, in this way, metal-plastic and PVC pipes are connected.

Sometimes special glue uses for these purposes. The installation process in this case is extremely simple:

places are smeared with special glue;
then the parts are rotated on the floor of the turnover;
in this position, they should be held until the glue is free.

It must be said that such a connection is quite strong, since the glue dissolves the adjacent surfaces, and, in fact, welds them.

For the assembly of metal-plastic pipelines, crimp fittings are also used. However, this requires a special tool that allows them to be contrary.

To perform temporary repairs, you can also use the clamps described above.

Here, perhaps, all the most effective ways of connecting pipes without welding, with whom I wanted to familiarize you.

Output

As we found out, in addition to welding, there are a number of other ways, with which you can repair or even the installation of the pipeline. Moreover, some of them allow to obtain no less reliable and durable compound. The only one, in any case, work must be performed very carefully, in accordance with the recommendations given above, so that the pipeline turns out hermetic.

Additional information contains video in this article. If you have difficulty in the process of connecting pipes, ask questions in the comments, and I will definitely try to help you.

July 25, 2016.

If you want to express your gratitude, add clarification or objection to ask the author - add a comment or tell me thanks!

Radiator's strapping should include shut-off valves

We already know that today we will talk about connecting heating radiators to the pipes. In the heating system, a thread is often applied to connecting elements. All equipment is installed on the contour by thread. This is an expansionate (metal tank with a rubber membrane inside), and the pump, and the batteries, and the same counters. Metal highways can also be connected by threaded couplings. At the same time there are different types of threads and methods of compaction compounds. Let's figure out how to properly connect heating pipes with each other and with batteries.

Varieties of thread

Steel pipes can be connected by welding or tubular thread. Connecting heating radiators to pipes is carried out only by metric thread, which is cut on the nuts. To collect separate parts of the metal highway from a stainless steel, the threaded compounds of the heating pipes are used:

conical (BSPT);
cylindrical (BSPP).

In the heating systems, conical threaded compounds of heating pipes are used, and cylindrical are used only for Signs. Cutting is carried out by means of a tool called Malrup. They are manual and electric. The hand tool consists of a handle, pulling and heads with cutting teeth. The presence of a ratchet allows you to work in hard-to-reach places, for example, on a segment where the highway passes along the wall.

To cut the threads you need to remove the chamfer and process the surface of the oil. In the process of cutting threads on the heating pipe, the oil must be pouring, it reduces friction and heating the part. So that after connecting the joint was hermetic, it must be sealing. Metric carving on the nuts of all elements of the contour is also compacted.

Types of seals

Previously, there was no such diversity of seals as today. Some plumbers use the entire range of materials in their work, and there are conservatives that still recognize only flax. Are they right? Let's figure it out. What to seal the thread on the heating pipe:

tape-fum;
flax with paste;
anaerobic glue sealant;
sealing thread.

Luck was previously used in a tandem with sudic, lubricant or oil paint. Today, a special sealing paste is used, which prevents drying and rotting flax.

He dries flax in systems with a hot heat carrier, and rotates on cold water. In the first and in the second case, the result of the process will be the appearance of leaks. Thanks to the paste, the fitting after the twist can be released a little, making a turn back no more than 45 degrees. Universal material is suitable for connecting metal heating pipes and polymers.

Lyon is suitable for all types of threads on heating pipes, regardless of diameter. He is the cheapest of the seals. It is important to turn it right:

with the help of metal or files, notches on the thread are made;
the strand of flax rolls into something like a thread;
the cheating is carried out in the start of the fitting (usually clockwise);
the protective paste is uniformly.

Floor flax

When cheating flax, it is important not to overdo it. First you need to make the first turn, which will secure the seal on the thread. In this case, the tail remains. On the second twist, the remaining tail picks up and wounds together with the common fiber. Watch that there are no twists. Distribute material on the thread you need evenly from the end to the fitting case. Working with flax, when connecting heating pipes, you need to follow your own hands, as they are constantly smeared pasta. If you have such hands to take up, the imprint will remain.

Fuma ribbon is used for thin-walled fittings and connector with fine threads. Working with the material is easy, hands are always clean. In this case, the tape is quite expensive and mainly used for small diameters. A significant disadvantage of this seal is the impossibility of adjustment. That is, if the junction of the heating pipes is twisted and it needs to be released a little to clarify, then the connection loses its tightness.

The sealing thread is the same as the FMU tape does not need lubrication and the use of special paste. It can be filled with dirty or wet threads, applicable for plastic.

According to the described manufacturers, the sealing thread can be turned off (adjust) 180 degrees.

Sealants are applied to clean and non-fascinated threads (usually new). They are:

dismantled;
hard dismantled.

And in fact, they are not dismantled. Before connecting the heating pipes using the sealant, you must be prepared for the fact that the connection can be disassembled only after heating. And only if it may turn out to be unscrewed. But when installing the location of the connections do not even need to tighten the keys.

Contour connection and batteries

To understand the methods of connecting heating pipes with a radiator to begin with consideration of materials from which heating systems can be made. They can be different:

steel;
copper;
propylene;
metal plastic.

All of them perform one-sole function - this is transporting the coolant from the boiler room (boiler) to radiators, which, in turn, give heat and thereby heat the room. All batteries are attached to the carving system. To do this, fittings are installed on the outline with a thread transition. On polymer contours they are put by soldering or pressing. Copper is only soldered, and the steel can be connected by press fittings and carvings.

In any case, a threaded connection is supplied to the battery. How to connect the heating battery with

Battery Connection Schemes for Heating

pipe, Schemes:

lower connection;
lateral connection;
diagonal connection.

The most effective option is a diagonal. In this case, the feed in the battery is carried out from above, and the reverse is from the bottom of the opposite end. The difference in the temperature of the radiator at various methods of connection is insignificant, so first of all should be repeated from the location of the battery. Included with new batteries always go parts for connecting them:

nuts with marking "S" and "O";
plug;
crane Maevsky.

Before connecting the heating radiator with a pipe into the holes on the ends of the battery, the nuts are twisted, and then the plugs, the crane of Maevsky and American are screwed down depending on the wiring.

To connect pipes and contour, you must use cranes and American women.

An American is such a nut that can spin with a fixed fitting. By the way, when connecting heating pipes to the heating boiler, it is also necessary to put cranes with an American. At the same time it is necessary that the American woman is screwed out on the boiler nozzle, but on the contour. Then it will be possible to calmly remove the boiler and water will not fall out of it.

Some wizards do not put taps during battery strapping, which leads to difficulties in further operation. If you want to remove and clean the battery, you will have to merge all the water from the system, and then fill it out. And if in winter it happens and break the radiator, what then? It turns out, you will need to stop the entire heating system to replace it. This is despite that someone is unlikely to have a duty spare radiator.

It will be necessary to go to the store, buy it, find masters. It will take half a day, at a minus temperature on the street there is a risk of defrosting the system. And then it will be necessary not only to change the batteries, but also repair the entire contour. If you put the cranes, then you can cut off radiators without stopping the entire system.