Rehau is the world leader in cross-linked polyethylene

Characteristics and types of pipes

Cross-linked polyethylene pipes are subdivided into four groups according to the type of production:

1. PEX-a - peroxide;
2. PEX-b - silane;
3. PEX-c - processed by fast electrons;
4. PEX-d - nitrogen.

They are produced in diameters from 10 to 110 mm, working pressure from 8 to 25 bar. They are designed to work in the temperature range from 0 to 95 ° C, do not react with acids and alkalis.

They are used in devices:

• warm floors;
• heating of household and industrial premises;
• cold or hot water supply;
• piping of air conditioners.

They withstand the freezing of the coolant without breaking the connections, quickly restore their previous dimensions after defrosting the water.

RAUTITAN pink

These are specially designed PEX-a pipes for creating heating systems in private houses and industrial premises. To protect against dissolved oxygen in water, an ethylene vinyl alcohol interlayer is used.

RAUTITAN pink is used in pipelines with a working pressure of up to 9 bar and a maximum temperature of up to 95 ° C. For a short time, polyethylene pipelines will withstand an increase in the temperature of the coolant up to 110 ° C. Pipes with nominal bore diameters from 16 to 63 mm are produced, supplied in coils or in separate six-meter pieces.

RAUTITAN his

Rehau Rautitan His 311

Rehau RAUTITAN cross-linked polyethylene pipe is used for supplying hot or cold water to residential and industrial premises, for tying technological pipelines. It is produced from cross-linked polyethylene of the RAU-PE-Xa brand with the addition of peroxides under pressure. It is produced with nominal bore from 16 to 63 mm in coils or in separate pieces up to 6 meters long and with wall thickness from 2.2 to 8.6 mm.

The use of this grade of polyethylene ensures the stable operation of pipelines at an operating temperature of the coolant up to 90˚С. It has a small temperature elongation of 0.15, has flexibility (bending radius is 8 diameters), wear resistance, and a service life of more than 50 years.

RAUTITAN stabil

These pipes are used in heating and water supply systems. RAUTITAN stabil is a multi-purpose tube with several layers. An intermediate protective aluminum layer is located between the inner and outer shells. It acts as an insulator of the outer layer of uncrosslinked polyethylene from the diffusion of oxygen from water into it.

In drinking water mains, the pipes must be designed for an operating pressure of up to 10 bar. In heating systems, RAUTITAN stabil pipelines are installed on highways with a working pressure of up to 10 bar and a coolant temperature of up to 95˚С.

During emergencies, it can withstand a short rise in water temperature up to 100 degrees Celsius.

RAUTITAN flex

Rehau rautitan flex

RAUTITAN flex pipes supply hot and cold water, arrange underfloor heating, are used in rooms for heating with cast-iron batteries or bimetallic radiators.

The intermediate protective aluminum layer not only prevents the penetration of oxygen from the water into the inner layers of the XLPE, but also promotes better heat transfer. Therefore, these pipes are recommended to be used when installing underfloor heating under: ceramic tiles, laminate, porcelain stoneware.

RAUTHERM S

The RAUTHERM S pipe is used for underfloor heating. Due to its low price, the most popular among consumers was a cross-linked polyethylene pipe with a diameter of 17 × 2.0 mm.

The pipeline is protected against the penetration of dissolved oxygen from the intermediate layer of ethylene vinyl alcohol copolymer.Due to the three-dimensional internal structure, products made of cross-linked polyethylene are tear-resistant, do not form cracks throughout the entire period of operation.

The guarantee for the use of pipelines without rupture of connections against exceeding the working pressure of no more than seven times is 10 years.

In XLPE pipes, antifreeze or ethylene glycol can be used instead of water. The flexibility of the pipelines allows you to use different layouts in one piece, which eliminates the leakage of the coolant by 100%.

The main varieties of Rehau pipes

The company produces several types of pipes, differing in purpose and physical characteristics. This allows you to select products that match the operating conditions and the planned budget.

RAUTITAN Stabil

This line contains universal pipes that can be used for water supply to buildings and in heating systems. From the inside, RATITAN Stabil pipes are made of cross-linked polyethylene and protected by an aluminum layer. They also have a self-supporting PE-Xc layer, thanks to which the pipeline retains its operational qualities even if aluminum is damaged.

Due to the high rigidity and ductility of the material, the pipes can be used in open wiring and retain their shape after bending. They are designed for a maximum pressure of 10 bar and temperatures up to 95 degrees. To ensure durability, the products are tested by applying a pressure of 16 bar before being shipped to customers.

RAUTITAN Flex

These pipes do not have an aluminum layer, so they are highly flexible. They are made of durable, wear-resistant polyethylene that is resistant to corrosion. The advantage of the material is that deposits do not settle on it. Rehau pipes are designed for the installation of main pipelines for water supply and heating systems, including for the installation of a "warm water floor". The maximum operating temperature of the operating fluid in the RAUTITAN Flex pipes is 70 degrees, the pressure is 10 bar.

The individual sections of the pipeline are connected with fittings and accessories of the appropriate size.

RAUTITAN Pink

This category applies exclusively to heating mains. They are colored pink, which makes it easy to distinguish RAUTITAN Pink from other types. Rehau products are made from molecular cross-linked polyethylene. In the structure of the walls, there is a layer based on ethylene vinyl alcohol, which protects against the effects of atmospheric oxygen. However, because of it, the material is unsuitable for drinking water supply. RAUTITAN Pink can be operated at temperatures up to 95 degrees and pressures up to 9 bar.

RAUTITAN His

Simple universal pipes that can be used to supply water or heat carrier. They are made of dense polyethylene, cross-linked by the peroxide method. This material is odorless and tasteless. RAUTITAN His pipelines can be operated with a working pressure of 10 bar. The maximum operating temperature reaches 70 degrees, but short-term heating up to 100 degrees is allowed.

RAUTITAN RAUTHERM

The line includes three product options:

• RAUTHERM-S, which have a characteristic red color, are used in the construction of heating systems.
• Yellow RAUTHERM-SL, intended for repair and restoration of pipelines without the use of welding.
• Heavy-duty, thick-walled RAUPINK with a layer that prevents destruction from contact with oxygen.

Rehau RAUTITAN RAUTHERM pipes are characterized by increased flexibility. They are often used when routing communications under skirting boards.

Pipe fittings from Rehau

What are the briquettes for the firebox

Rehau fittings are guaranteed to connect parts of the pipelines while maintaining complete tightness. The method of pressing pipes and fittings with sliding sleeves forms a non-separable unit during the warranty period. The main feature of non-separable joints:

• they do not have rubber gaskets and O-rings;
• they do not need a hydraulic pressure test to determine a possible leak;
• the inner section is the same along the entire length, there are no narrowings and burrs from the material;
• fittings in drinking water pipes are made of bronze or brass;
• the installation of connections takes place using proprietary tools that exclude the appearance of defects;

Attention: the technical conditions prohibit the use of RAUTITAN MX brass fittings in conjunction with the RAUTITAN SX stainless steel fittings. ... The diameters of fittings and sliding sleeves for hot water supply and water pipelines range from 16-63 mm

The diameters of fittings and sliding sleeves for hot water supply and water pipelines range from 16 to 63 mm.

Classification

What are the screens for the heating battery

What does Rehau offer today? The scope of the pipes it produces is wide enough. In construction, these are heating, plumbing, hot water supply and sewerage systems.

Sewerage

They are made from polypropylene. Brand - RAU-PP1221. From the technical characteristics, it is necessary to note a long service life, products can withstand heavy loads and temperatures. Let's add simplicity of installation here.

Elements are connected using fittings and fittings. The company offers sewer pipes that can be used for both indoor and outdoor networks.

Cold and hot water supply

For these systems, the company manufactures cross-linked polyethylene products.

This variety is gradually replacing metal-plastic counterparts due to its high technical and operational characteristics and ease of the installation process.

Heating

This life support system uses two types:

1. Reinforced plastic.
2. Made of XLPE.

Gradually, pipes from the second group are replacing the first type. This is due to new requirements for heating systems, where the water temperature sometimes reaches +100 ° C. Reinforced-plastic products can only withstand +95 ° C.

Features of Uponor XLPE

Uponor XLPE is highly flexible and durable. Thanks to its unique design, Uponor piping does not destroy the concrete or cement screed, as the linear expansion takes place inside the pipe. It is this quality that makes Uponor systems suitable for underfloor heating mats.

Uponor pipe

The advantages of Uponor XLPE are:

• Complete absence of corrosion;
• Resistance to overgrowth;
• Excellent sound insulation;
• Cracking resistance;
• Non-toxic;
• Low roughness coefficient;
• Compliance with sanitary and hygienic standards, making the Uponor pipe suitable for drinking water supply;
• Easy installation, the simplest tool is required;
• Not afraid of low temperatures, suitable for installation in the cold season.

Uponor XLPE meets the following specifications:

• Working temperature - from - 40 to + 95˚С;
• Thermal conductivity - 0.35 kJ;
• Heat capacity - 2.3 kJ;
• The service life of Uponor products is up to 50 years.

Uponor XLPE has a molecular shape memory, which greatly simplifies the installation process and eliminates the need for a special tool. Connecting two Uponor system elements takes approximately 30 seconds, which is several times less than connecting polyethylene and polypropylene pipes.

Underfloor heating with Uponor pipes

These high technical and operational characteristics allowed Uponor systems to be used with virtually no restrictions. The pipeline is used in the following areas:

• For heating supply;
• For cold and hot water supply;
• For underfloor heating;
• For hidden laying of communications.

Advantages and disadvantages

How to choose a water heater what are the water heaters, the features of each type

Just like any product has its own advantages and disadvantages, they also have Rehau products.

Benefits:

• easy and quick to assemble;
• do not transmit noise from moving water to monolithic structures of the house;
• long service life - 50 years;
• versatility;
• do not corrode;
• do not form a coating of calcium and iron salts on the inner surface;

Thanks to the wide variety of fittings, it is easy to cut into the water supply or heating system.

Disadvantages:

• relatively high cost;
• expensive equipment for installation;
• require the installation of "P" or "L" shaped temperature compensators on long sections of pipelines;
• the flexibility of polyethylene requires auxiliary fixing elements.

Rehau-PEX pipes, despite their high cost, are confidently conquering the market, crowding out competitors.

Benefits of Rehau pipes

Rehau products differ from analogues due to the following advantages:

• The material is absolutely not subject to corrosion.
• The walls of Rehau polyethylene products have low thermal conductivity.
• Polyethylene can be operated at high temperatures and pressures without losing performance.
• The material from which Rehau pipes are made does not deteriorate during sudden temperature changes.
• The walls of the Rehau pipelines are good at dampening the noise of the water flow.
• The material has a memory effect. This ensures absolute tightness of the joints.
• Rehau pipes are immune to UV rays and chemicals.
• XLPE resists dynamic and static loads well.
• The service life of Rehau pipes is at least 50 years.

Thanks to the use of universal mounting elements, Rehau pipes are quickly assembled. The flexibility of the material and the wide range of shaped fittings facilitate the installation of complex pipelines. By combining different types of pipes and fittings, it is possible to mount the system along the entire length of a large object: from a heat source to a radiator.

Advantages and disadvantages

Rehau Rautitan products are made from high quality polymer compounds using the most modern technologies, which ensures their amazing performance.

Rehau pipes have undeniable advantages.

• Unique connection system. Sliding sleeves allow high-quality installation even for people without special skills, while the chance of incorrect joining is about 2%. And also it provides the following: installation of the pipeline without welding, soldering or other special means;
• high reliability and tightness of the joint, and therefore pipes can be sewn into walls without fear of leaks;
• minimum terms of work.

• Excellent elasticity and flexibility, no kinks.
• High resistance to abrasive materials, mechanical shock, vibration.
• The polymer is excellent at absorbing noise.
• Pipes do not corrode, do not shrink, do not rot.
• The polymer is completely resistant to the freeze and thaw cycle.
• Pipes are made from inert substances that are not harmful to health.
• Excellent material memory. After bending, the pipe regains its shape. When stretched, the shape is restored if the elongation did not exceed 300%.
• The service life depends on the conditions and ranges from 5 years (under the most severe) to 50 years (under normal conditions).

In addition to positive qualities, Rehau products have their weaknesses, such as:

• water pipes are very strong and resilient; tools will be needed to bend products with a diameter of more than 32 mm;
• push-in fittings are not cheap, and with an increase in the diameter of the pipe, their price rises;
• the pipe material is vulnerable to direct sunlight.

The approximate cost of pipes depends on the type, namely:

• Rehau Rautitan Stabil with a diameter of 16–32 mm costs approximately 110–375 rubles per 1 m;
• Rehau Rautitan Flex with a diameter of 32 mm will cost 305-310 rubles per 1 meter, and with a diameter of 50 mm - 620 rubles;
• the price for 1 meter of Rehau Rautitan His with a diameter of 16 mm will be about 115 rubles, with a diameter of 32 mm - 445 rubles, and the widest version of 63 mm - about 1170 rubles.

Benefits

All Rehau pipe products have the following advantages when compared with analogues from other manufacturers:

• the material is resistant to corrosion;
• low thermal conductivity;
• high operating temperature and the ability to operate temperature fluctuations without losing the original characteristics;
• absolute tightness of the connection is provided by the shape memory of the material;
• good sound insulation characteristics;
• resistance to various influences of a mechanical and chemical nature, as well as ultraviolet radiation;
• long service life, which is 50 years.

Pricing

The cost of Rehau products depends on the series of channels and their sizes.

To see the average price per meter of these products, see the table below.

More details about the prices of the products in question can be found on the websites of the official dealers of the company. There you will find comprehensive information on this matter. We strongly do not recommend purchasing products from resellers or firms with a dubious reputation. There are quite a few fakes on the market. Therefore, you should not take risks to save money. It is better to buy quality materials once, than then spend money, time and energy on correcting mistakes.

The cost of installing Rehau pipes depends on the size of the project. For a small one-room apartment, this figure in Moscow and St. Petersburg can be from five thousand rubles. In Kiev, these works will cost less. The cost of installing Rehau pipes in the Ukrainian capital can be as low as about one thousand hryvnia.

Below you can watch a video clip in which you will learn a lot of interesting information about the products of the German concern Rehau.

Types of Rehau fittings

Conventionally, all connections can be divided into three groups: couplings, tees and elbows. Distribution manifolds and manifolds can be classified in a separate category.

By the type of installation, there are three main methods:

• compressor;
• compression;
• welded.

Rehau manufactures all types of fittings.

Compression (adjustable)

The compression type of installation is also called serviceable, since such a fitting can be dismantled at any time without damaging the parts. This may be necessary, for example, to replace the seals.

This fitting consists of:

• couplings;
• crimp collet ring;
• crimp nut;
• seals;
• gaskets.

A ring and a nut are put on the pipe. There are two O-rings and a gasket on the coupling nipple. Then the sleeve is inserted into the pipe and crimped. The coupling has both special ribs for retaining the seals and a thread for connecting to the nut.

The advantages of such a fitting include the fact that only two adjustable wrenches are required for its installation, and wrenches may also be suitable.

Crimp

Such a fitting consists of only two elements - a sleeve and a ferrule. For installation, you will need special equipment - an expander and a tool for axial pressing. The sleeve is put on the pipe with a chamfer towards the connection. The pipe itself is expanded by an expander to a size that allows the coupling fitting to be inserted into it. Then the sleeve is pushed under pressure over the area where the union is located. Dismantling of such a fitting is impossible.You will have to cut the sleeve, which is quite difficult. Such a fitting is mounted very quickly and reliably.

Welded

As an alternative, the electro-diffusion welding method is used, but it is unlikely to be possible to carry out it on your own. Firstly, even in the instructions of the company, this method of connection is not clearly described and it is separately stipulated that such work can only be carried out by specialists. Secondly, for this method of fastening, you will need rather specific equipment, which is problematic to get. In addition, the order of prices for such an instrument is quite high.

According to the technology, the sleeve is put on over the joint. There is a wire inside the sleeve, which acts as a heating coil, to which current is supplied. The surfaces to be welded are heated to the melting temperature and subsequent joining.

Rehau pipes - characteristics and types, pros and cons

The products in question have unique features. Thanks to them, she has won the trust of consumers around the world.

Key features of channels include:

1. Easy to install thanks to flexible duct design.
2. No flooding and blockages during the entire period of use.
3. High heat resistance. Heating channels of this brand can withstand temperatures up to one hundred degrees.

   

4. Excellent thermal insulation. The ducts retain heat well, reducing energy costs.
5. Corrosion resistant. Even at high stress, cracks do not appear on the surface of the products.
6. Versatility of application. These products can be used to create heating circuits, underfloor heating systems and sewerage systems.
7. Possibility of routing without nuts.
8. Silent operation due to the presence of high molecular weight polyethylene in the composition of the products.
9. Environmental friendliness. Manufacturing materials are absolutely harmless to the human body.
10. Resistant to temperature and pressure changes.

The manufacturer manufactures several lines of channels suitable for the construction of heating systems. Each of them has its own characteristics.

Designs are in the greatest demand:

1. Stabil.
2. Flex.
3. Pink.
4. His.

Stabil series products have a high degree of versatility. They can be used to equip "warm floor" systems and heating circuits. The channel is made of a polyethylene layer covered with aluminum.

The key characteristics of these products are:

1. They keep the pressure indicator up to ten atmospheres.
2. They have good strength and elasticity.
3. The size of the channels is from 1.6 to 6.3 centimeters.
4. Able to work at high temperatures. The operating temperature is ninety-five degrees. In emergency cases, the products are capable of holding up to one hundred and ten degrees.

The ducts of the series under consideration are equipped with additional elements - a sleeve and a coupling. These components are needed to ensure high-quality tightness and free movement of the carrier inside the products. These elements greatly simplify the installation of the system.

After completing the installation process, the channels can be immediately filled with a coolant. It is also important that when assembling the system, there is no need to use additional seals. In addition, this series includes swivel components (fittings). They are used to create branching systems.

The designs of the Flex series are similar to the previous version. The key difference is the special protection on the inner surface. It is necessary to prevent air from entering the structure.

The company also manufactures products in the Pink series. These are channels specially made for the construction of heating circuits. The material of manufacture is cross-linked polyethylene.

The characteristic feature of these channels is their pink color. To install the system from these channels, fittings and corresponding fittings must be used.

The cost of the listed types of products is relatively low.Therefore, these structures can be bought for building a system in a cottage or replacing the heating pipes of a developer in an apartment of a multi-storey building. With their help, you can quickly carry out the routing of channels from a gas or electric boiler.

Read from this article: What is a brass pipe and how to use it. Complete overview. Table with dimensions, weights and markings. Everything you can find about brass couplings and fittings.

XLPE

What it is

Rehau Rautherm XLPE can only be red.

Polyethylene pipes have been used for a long time. Products made from this polymer have proven themselves excellently as pipes for cold water supply and drainage, as well as for transporting other substances that do not cause chemical destruction of polyethylene. However, this option is not suitable for hot water, since it has a low resistance to heating.

Pipes made of ordinary dense polyethylene are most often used for water supply.

Given the excellent characteristics of polyethylene pipes, the scientists decided to modify this polymer so that it could withstand the stresses inherent in hot water systems.

Molecularly cross-linked polyethylene: bonds between molecules.

Soon a solution was found: the developers of the new plastic saw that the strands of molecules could be stitched together, forming spatial bonds between carbon atoms. Moreover, four different stitching methods have been found:

1. Peroxide. The material is designated as PE-Xa. The most expensive and most efficient stitching method. By adding hydrogen peroxide to the high-density polyethylene melt, the maximum possible degree of crosslinking of the material is achieved at the moment - 75%.

Rehau XLPE PE-Xa pipe.

1. Silane. The result is a polymer designated PE-Xb. The polyethylene melt is treated with moisture containing organosilanide and a special chemical catalyst. The result is 65% crosslinking and lower material costs.

Silane crosslinking also gives good results.

1. Electronic. The resulting material is referred to as PE-Xc. The method consists in bombarding solid polyethylene with charged electrons. As a result, crosslinking is achieved, the degree of which does not exceed 60%. This is the cheapest way, although the material is somewhat different in quality and features.

Electronic stitching is cheap and durable enough.

1. Nitric. The least common way to give PE-Xd. The reaction of treating polyethylene with nitrogen compounds is quite complex technologically, therefore, it is practically not used today. Gives stitching up to 70%.

Crosslinked polyethylene is a polymer whose strands are interconnected in space to form a three-dimensional molecular lattice, similar to that created by the atoms of solids. The material is different:

• increased strength;
• heat resistance;
• resistance to corrosion and chemicals.

Differences between Rehau products

Rehau Rautitan pipe with flex and stabil grades.

The Rehau company is the world leader in the production of cross-linked polyethylene PE-Xa and products from it. The high popularity is due to the fact that the company has created a complete system, which is distinguished by a completely thought out and unified installation process - from cutting the pipe to the final installation of the system and putting it into operation.

This is what the assembled heating system looks like.

The water underfloor heating system is characterized by increased requirements for the quality of the pipeline and connections. To independently understand where you can save money, and where you should spend money, you must have sufficient experience in working with warm floors.

Moreover, you will still spend time and money on the selection, search and purchase of all the necessary fittings, tools, etc.

The connection with fittings of different configurations is the same.

Rehau offers a completely sophisticated system with several pipe types, tools and a complete set of parts.Installation of Rehau pipes is unified and does not depend on the scope of application.

This allows us to characterize the product as the most reliable and suitable for those who are used to getting the expected result instead of playing roulette.

A pipe connection consists of three main elements: pipes, sleeves and fittings.

What is XLPE

Why Choose XLPE

The cross-linked polyethylene pipe is a building material of the modern generation. The origins of its creation lie in the last century. It was then that the first PEX, cross-linked polyethylene, was produced. But today this material has a completely new image with many advantages and possibilities.

Crosslinked polyethylene is based on high pressure processing and the creation of special bridges between the layers. This process is called "stitching". Hence the name of the material itself follows - Rehau pipes made of cross-linked polyethylene.

There are several technologies for stitching pipes:

• Peroxide technology (PEXa).
• Gas treatment (PEXb).
• Creation of an electromagnetic field and irradiation of the material with electrons (PEXc).
• Treatment due to nitrogen compound (PEXd).

For example, Valtec cross-linked polyethylene pipe is created using PEXb technology, and Rehau products are created using PEXa and PEXc technologies.

Diagram of a cross-linked polyethylene pipe

The choice of pipe depends largely on the production method. For operation at high temperatures, PEXa is preferred, and PEXc is distinguished by its low cost and is excellent for operation at low temperatures.

Where is XLPE used?

Cross-linked polyethylene technology is used in the arrangement of hot and cold water supply, as well as for heating systems in homes, offices and apartments. Rehau polyethylene pipes are also used for arranging a warm water floor. In this case, the owner of the house may not be afraid for the integrity of the pipe, even at high temperatures.

Rehau products can significantly increase the service life of the communication system. During production, this material loses its crystalline form, which makes it flexible and practical. With it, you can create heat and water supply systems with a large number of bends.

The service life of pipes depends on the operating temperature. Under conditions of temperature up to 75 º and pressure up to 9 bar, polyethylene pipes Rehau will last up to 50 years. If the operating temperature in the pipes reaches 95 º, then the service life is reduced to 15 years. Rehau polyethylene pipes more easily tolerate low temperature conditions due to the existence of cross-links. But the Valtec cross-linked polyethylene pipe can be operated at a temperature of no more than 80 º and a pressure of 6 bar. Temperature rise up to 95 º is possible only for short periods. In this case, the design life is 50 years.

System of warm walls made of cross-linked polypropylene

Advantages of the material

The advantages of this material are as follows:

• Reliability and long service life.
• Resistant to chemical processes, including oxidation.
• The presence of a diffuse barrier, which avoids the penetration of oxygen from the outside.
• High resistance to hydrodynamic and mechanical pressure.
• There are practically no cracks on the pipe surface.
• Stable operation at high and low temperatures from -200 to + 200 °.
• The ability to recover, that is, to acquire the previous indicators when receiving damage in the form of deformation.
• Absence of manifestations of the corrosion process - the appearance of rust on the surface of the pipes.
• High shrinkage rates.
• No emission of harmful substances even when working at high temperatures.
• Lack of heavy metals.
• Saving time during installation.
• Affordable material cost.

Installation of heating systems Rehau

The assembly of Rehau metal-plastic and plastic heating systems is carried out in the same way as in the case of using polypropylene products.

There are very few differences, there are only a few of them:

1. Installation is carried out using the Rautool tool, which is used to connect products with a diameter of 14-110 millimeters. The drive for it can be manual, electric or battery.
2. When arranging heating, it is necessary to use special polymer fittings of different diameters.
3. The company's own development is the installation of elements with a movable sleeve, thanks to which it is possible to install the pipeline without revisions.

Installation of heating pipes Rehau

REHAU pipes are laid out by cold pressing using a movable sleeve. The connection is created sealed and non-detachable, and this allows you to hide it under the screed or in the pipe without any access to the docking points during use.

Polyethylene pipes are the best material for hidden plumbing.

The connection of REHAU polyethylene pipes is very simple. The pipes are put on the sleeves fixed in a vice, turned with a chamfer to the place of the future connection, after which the pipes are expanded (without heating) with the help of expanders, and then the pipes are pressed in with the help of movable sleeves.

This method of connecting pipes using movable sleeves provides a large number of advantages that cannot be achieved using other types of joints:
1. There is no need to use soldering, welding and welding equipment. This eliminates the likelihood of a negative impact of the equipment on the health of workers carrying out piping.
2. The use of sliding sleeves makes it possible to eliminate the likelihood of a fire, which has a relatively large percentage during welding.
3. The process of connecting pipes is amenable to visual control, which gives an excellent opportunity to make adjustments in real time, for example, if suddenly there is a distortion at the joint, which can further affect the tightness of the connection.
4. At the point of joining, the narrowing of the pipe cross-section is not significant, therefore, there is no change in the reaction to the action of internal pressure, which guarantees stable operation throughout the entire service life.
5. You can use the connection made immediately after the work.
6. There is no need to use other tools for soldering, gluing, cutting and welding when wiring, except for the rautool kit.
7. Comparing the cost of this connection method with other methods shows that it saves not only on resources, but also on labor costs, thereby reducing the amount of time that is required for all the work to lay the pipeline;
8. For the connection, only fittings of various shapes and purposes produced by the manufacturer should be used. They make it possible to lay REHAU pipes in almost all points of the bathroom, even if access to it is difficult.

Assembly tool

The Rehau company made sure that the installation of its pipelines was carried out as correctly as possible, and for this purpose it released the special tool RehauRAUTOOL. The simplest basic tool kit Rehau RAUTOOL M1 consists of several tools required for mounting:

• Pipe shears 40 RAUTITAN Stabil.
• Expander for pipe expansion manual Rehau RAUTOOL RO system.
• A set of interchangeable attachments for expander of different diameters.
• Manual press for crimping a slip-on sleeve, called the "basic tool M1", with a set of attachments for various sleeve diameters and fixing pins.
• Tube lubricant.
• Tool cleaning brush.
• Suitcase for transportation.

It should be noted that the set of tools is quite expensive, but in any construction market it can be rented for the duration of the work.

Heat-resistant polyethylene pipes PERT

This is a new modern material, which is not known to everyone in the construction market, especially to ordinary buyers. There are Pert pipes of types 1 and 2:

- the pipe of the 1st type is standardized, has temperature limits up to 70 degrees, therefore, the main purpose is low-temperature heating systems (for example, installation of underfloor heating); applies up to 4 classes of operation; pipe diameter and wall 16x2.0, 20x2.0, therefore, compatible with radial crimping systems;

- Pipes of the 2nd type - a material that, in terms of its characteristics, is practically close to PEX, or even surpassed them in some way. There is no memory effect inherent in many PEX materials, but it is better to refrain from restoring the kink. Has an oxygen protective layer.

Heating with pipes made of REHAU cross-linked polyethylene

Interesting on the topic:
Characteristics and classification of polyethylene pipes

Cross-linked polyethylene is the best choice for heating

The use of polyethylene pipes for sewer systems

Comments on this article

1. Anton

   I have been connecting heating systems and underfloor heating for over 10 years. In practice, I happened to use materials from different manufacturers and I can confidently say that Rehau products are unmatched in quality. 01/25/2016 at 16:03

Varieties of pipes

According to the purpose, the products can be divided into two types: for water supply and heating.

Also separates internal engineering systems and radiant heating and cooling systems. The former can be used for both water supply and heating, the latter only for heating / cooling.

Heat supply systems are placed in a separate category.

Rehau also produces polypropylene domestic sewage pipes.

Special pipes RAUTITAN his and RAUTITAN pink are used for internal engineering systems. The former are intended for cold and hot water supply, the latter are used for heating systems.

All Rehau products are manufactured using the RE-Xa method, i.e. the peroxide crosslinking method. The suggested diameters are from 16 to 63 mm.

RAUTITAN stabil can be used as universal pipes, however, their maximum diameter is 40 mm, or RAUTITAN flex with a diameter of up to 63 mm.

A novelty are insulated pipes of these brands, which have a layer of extruded insulation made of foamed polyethylene. They are intended for thermal insulation of the heating system on load-bearing ceilings.

Insulation allows:

• enhance the water-repellent effect;
• increase resistance to aging;
• protect from heat generation, condensation;
• protect against sound transmission through building structures.

For radiant heating and cooling systems (such systems also include underfloor heating) RAUTHERM S and RAUTHERM SPEED are offered. The second feature is the presence of adhesive tape on the surface for attachment to the laying mats.

In addition to floor systems, both wall and ceiling systems can be equipped. At the same time, ceiling tiles are offered in the form of gypsum boards with an already built-in pipe.

RAUVITHERM UNO (with one insulated pipe) and RAUVITHERM DUO (with two) are used as heating systems.

They find applications in the following areas:

• centralized and local water supply;
• drinking and hot water supply;
• pool equipment;
• refrigeration equipment;
• industry and agriculture;
• air-water pump connections;
• heat pumps using the heat of the earth.

The sound-absorbing internal sewerage system is represented by RAUPIANO PLUS. The diameter of these products is from 40 to 200 mm. These are polymer multilayer pipes with reinforcements in the cornering zones. Special clamps are also used to absorb noise. Polypropylene is more expensive than HDPE pipes, but it is lighter, stronger and has a smoother surface, so it is more resistant to dirt.

RAUTITAN system

RAUTITAN is the name of the entire Rehau XLPE piping system and slip-on sleeve connections.

The main advantages of the RAUTITAN system:

• The connection on a sliding sleeve (axial pressing), which is convenient for installation, is durable, can be immediately loaded with pressure and temperature.
• Due to the absence of O-rings, the chance of installer error is minimized.
• There are no narrowing at the transition pipe - fitting (in the case of axial pressing).
• Unified fittings for all pipes.
• Pipe diameters from 16 to 63 mm.
• Installation of pipes directly to heating devices is allowed.
• No corrosion effects.

All pipes of the RAUTITAN system are chemically crosslinked using a peroxide method and have the PEX-a index and have the highest percentage of crosslinking:

• among all PEX pipes, they have the greatest flexibility;
• creases can be straightened with a construction hairdryer and fully retained operational characteristics;
• good "molecular memory".

Warm floor

Practice shows that the main direction of using pipes from the Rehau company is a heating system underfloor heating

Here it is important to correctly carry out the calculations and choose the right installation scheme.

Wiring types

The rehau pipe routing can be done with a snake or a spiral.

The first option is the simplest, but it has one drawback - the coolant at the end of the circuit is very cooled, which leads to uneven heating of the entire floor. Therefore, experts advise using a spiral as a piping.

Payment

As for the quantity, here it is necessary to take into account the heat transfer rate in linear form. For example, a pipe with a diameter of 16 mm distributes heat well at a distance of 15 cm from both sides.

That is, its total coverage is 30 cm.This means that a space of 30-35 cm can be installed between the branches of the contour.

Calculating the number of branches, knowing the size of the room, is not difficult. This indicator is multiplied by the length of the room, but it must be borne in mind that the distance from the walls to the pipes should be 20 cm.

The main types and their features

Rehau manufactures pipes designed for use in pipelines for various purposes. It is advisable to choose products that have positive reviews and good technical characteristics. The wiring can be assembled by hand, if you take into account the recommendations of experts. All products of the Rautitan line are divided into types, each of which is focused on performing specific tasks: supplying hot and cold water, heating and arranging a heated floor. For these purposes, several types of pipes have been created.

Stabil

These are pipes for functional purposes, which are produced on the basis of a metallized polymer and are painted in silver. Structurally, they have an aluminum interlayer, and the inner layer is cross-linked polyethylene (PE-X / AI / PE). They can be used in any type of water supply: cold and hot water, low-temperature heating.

The performance characteristics of Stabil pipes are as follows:

• operating temperature up to + 95 ° С, can withstand surges up to + 110 ° С;
• section diameter is 16–63 mm;
• differ in elasticity and have high strength indicators;
• working pressure - up to 10 atm.

The pipe is realized equipped with a coupling and sleeve for optimal sealing of joints. In addition, the installation process is simplified and accelerated. There is no need for a sealant for installation; immediately after its completion, you can begin to operate the pipeline. If necessary, you can create a branching of the pipeline, use the rotary elements supplied with the pipe in the kit.

The Stabil series is realized with the following dimensional parameters of pipes, where the first value is the outer diameter of the pipe, and the second is the wall thickness:

• 16 / 2.6 mm;
• 20 / 2.9 mm;
• 25 / 3.7 mm;
• 32 / 4.7 mm;
• 40/6 mm.

At the same time, the length of the manufactured products is 5, 50 and 100 meters, the second and third options can be cut into 10 meters. Its duration varies depending on the operating conditions. The following relationship, where the first is the operating temperature in ºС, the second is the operating pressure in bars, and the third is the guaranteed operating life in years, shows illustrative options:

• 20/35/50;
• 70/20/50;
• 95/15/5.

It can be seen from this that operation at maximum temperature conditions significantly reduces the service life.

Flex

Flex is a versatile pipe type. Unlike the Stabil type, it can be used in any type of heating, not just low temperature. The inside of the product is made with stitched PEX-Xa polyethylene, which is covered with ethylene vinyl alcohol, which protects from oxygen. This is the main difference between the Flex type and the Stabil. Its task is to protect liquids from air penetration, otherwise the structure of the products is almost identical. Flex pipes are connected by means of special sleeves.

The Flex series is available with the following pipe dimensions, where the first value is the outer diameter of the pipe and the second is the wall thickness:

• 16 / 2.2 mm;
• 20 / 2.8 mm;
• 25 / 3.5 mm;
• 32 / 4.4 mm;
• 40 / 5.5 mm;
• 50 / 6.9 mm;
• 63 / 8.6 mm.

They are sold in lengths of 6 meters and in bays of 50 and 100 meters with the possibility of cutting into pieces of 10 meters. Operating conditions affect pipe life. What can be seen in practice, the approximate parameters are as follows, where the first is the temperature of the liquid in the system (degrees), the second is its pressure (bar), and the third is the warranty period under such conditions (years):

• 20/18,2/50;
• 70/10/50;
• 95/9/10.

His

The His line of pipes has a universal purpose, it is made of cross-linked peroxide polyethylene PEX-Xa. The pipes are painted white. They can be used in drinking water, hot and cold water pipelines, as well as in heating systems. His pipes are connected by means of sliding sleeves, which ensure a strong and tight connection.

The characteristic features of this type of product are as follows:

• working temperature up to + 90ºС;
• long service life;
• minimum thermal expansion;
• good memory of the material;
• excellent strength and durability;
• elasticity and flexibility;
• inner coating prevents deposits;
• simple and quick installation.

Rehau Rautitan His are sold in dimensional variations with an outer diameter of 16–63 mm in 6 meter segments, in bays of 50–100 meters with a diameter of up to 32 mm.

REHAU RAUTITAN pipes. Details, types and sizes

• Heating systems, underfloor heating, water supply and their installation
• /
• Professional installation of water supply. Payment. DIY water supply installation. Information, installation examples
• /
• Water supply, water treatment and sewerage system in a private house - information
• /
• REHAU RAUTITAN pipes. Details, types and sizes

The company known to many - REHAU produces reliable and high-quality cross-linked polyethylene pipes, which are designed for heating and water supply systems. Today, REHAU pipes are an integral part of the internal utilities of many modern buildings.

REHAU pipes are made by cross-linking polyethylene (PE). High-molecular-weight high-density polyethylene with a linear structure is used as a raw material.

RAUTITAN stabil, RAUTITAN pink, RAUTITAN flex and RAUTITAN his pipes are made by applying peroxide stitching

... The polyethylene itself, which is crosslinked by the peroxide method, is designated as PE-Xa. The entire inner layer of RAUTITAN universal pipes consists of cross-linked polyethylene and is in contact with the water flowing through it.

Universal Pipes Rehau RAUTITAN stabil and RAUTITAN flex are perfect for the distribution of underfloor and radiator heating, as well as for the installation of all potable water systems. The RAUTITAN system is characterized as a reliable and time-tested technique for pressing all joints using a slip-on sleeve without an O-ring.

Using only the universal assembly tool RAUTOOL, a unified connection technique and a unified program of shaped fittings, it is possible to mount the entire water supply system, floor and radiator heating systems.

RAUTITAN stabil pipes

: type of which - PE-Xc-Al-PE is able to withstand an operating pressure of 10 bar at a temperature of 95 ° C. RAUTITAN stabil pipes are produced with external diameters of 16-40 mm, and it is recommended to use them for the installation of openly laid pipelines (plinth distribution, risers and mains) in all water supply and heating systems, the color of the pipe is steel gray.

The main advantages of the RAUTITAN stabil pipe: it is actively used for all types of heating and water supply systems, has a very strong self-supporting inner layer consisting of Fe-Xc, even with slight damage to the shell, retains its strength properties, perfectly retains its shape when bending, in the supply program itself there are pre-insulated pipes, low temperature elongation, and it is also possible to connect to a heating device.

Rehau RAUTITAN flex pipes

of the PE-Xa type have an oxygen-protective layer made of special ethylene vinyl alcohol (EVAL), pipes of this type withstand an operating pressure of up to 10 bar at an operating constant temperature of 90 degrees. Most often, Rehau RAUTITAN flex pipes are used for the installation of plumbing and heating systems, these pipes have a gray-steel color and are available with an outer diameter of 16-63 mm.

RAUTITAN flex perfectly combine all compliance with drinking water quality standards and perfectly protect against oxygen penetration, they also have the most optimal elasticity and are used for water supply and heating systems.

Let's take an example using RAUTITAN flex. Very often they can be used for laying in a screed, or for laying highways in the basement, risers and economical connection to heating devices. Many experts recommend using threaded fittings made of brass, which does a good job of leaching, or cast brass.

Rehau RAUTITAN his pipes

of the well-known company REHAU are primarily intended for use in a drinking-quality hot and cold water supply system with a working pressure of 10 bar typical for such pipes. The material of the pipes consists of polyethylene cross-linked according to a special peroxide method, which is neutral in terms of taste and smell.

Modern water pipes RAUTITAN his are familiar to all sizes from 16-63 mm. The complex system of pipelines and fittings offered by REHAU can be easily operated at an operating temperature of 70 degrees or for a short time - up to 100 degrees, but only in case of peak loads. The universal HIS system is very often used in the installation of new water supply networks, as well as in the reconstruction of old ones.

Rehau RAUTITAN pipes pink

firms REHAU can perfectly find their application in all heating systems. Thanks to this program of fittings, it became possible to simultaneously mount the water distribution with the RAUTITAN his pipe and at the same time connect the radiators with the RAUTITAN pink pipe. The RAUTITAN pink pipes offered by REHAU are not used as water distribution systems. In modern heating systems, the RAUTITAN pink pipe can be used as a supply line with a temperature of 90 degrees and an operating pressure of 9 bar. RAUTITAN pink pipes of the PE-Xa type have a violet color, are produced with outer diameters of 16-63 mm and are used for the installation of heating systems.

Rehau RAUTITAN pink pipes have standard sizes of water pipes - 16 × 2.2 to 63 × 8.7 mm. Note that the pipes for connecting stainless steel radiators do not need painting.

The main advantages of the Rehau RAUTITAN pipe are single mounting element, universal fittings from heating and water supply

, comparatively
high installation speed
as well as the ability to reuse all pipe cuttings. Note also the flexibility that results from a large range of shaped fittings, easy installation and gasket. Rehau RAUTITAN pipes with a diameter of 16 to 63 mm will help you to install large objects, from the heat source to the last radiator. The fixing chute makes it possible to lay the RAUTITAN stabil, pink, his, flex pipes in an open way.

REHAU catalog

Types of fittings for XLPE

Depending on the performance properties and design features, all fittings for cross-linked polyethylene are divided into groups according to the material from which they are made, according to design features and according to the method of installation. When choosing fittings, it is imperative to take into account the features of the piping system.

To Work With a XLPE Fitting

The material used to make these connections:

1. polyethylene;
2. polypropylene;
3. polyvinyl chloride;
4. from combined materials.

Manufactured designs of connecting elements:

• couplings - used for on a straight section of the pipeline, they can connect pipes of both the same diameter and different ones;
• elbows - used for corner joints or, if necessary, change the direction of flow in the pipeline;
• plugs - needed to close the final section of the pipeline, if no further movement is envisaged;
• tees - are used to connect three pipes or when it is necessary to branch the main flow of the pipeline;
• bends are used to connect a new pipe section to an already installed pipeline.

According to the type of installation, the connections for cross-linked polyethylene are divided into:

• for cross-linked polyethylene;
• pressed fittings.

Features of the XLPE fitting

Compression elements made of sewn polyethylene are produced in a collapsible design. A good sealing of the structure is created by a plastic gasket and a union nut.

Press fittings are used where a permanent connection with high tightness is required. They are often used in high pressure pipelines.

Crosslinked polyethylene production method

Rehau cross-linked polyethylene is produced in two ways: using chemical reactions and hard radiation. The chemical method uses low density polyethylene plus foam catalysts, stabilizers and other chemical additives. After mixing in an extruder under high pressure and temperature, polyethylene molecules break and crosslink.

Irradiation of polyethylene with fast electrons leads to a modification of the internal molecular structure. During irradiation, the chemical formula of the substance remains unchanged, but cross-links are formed between neighboring molecules. As a result, the tensile strength is increased compared to conventional polyethylene.

Article Rating