Andrey
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Andrey July 31, 2016Specialization: facade finishing, interior finishing, construction of dachas, garages. Experience of an amateur gardener and gardener. We also have experience in repairing cars and motorcycles. Hobbies: playing the guitar and many other things that I don’t have time for :)

Often people who independently undertake the renovation of an apartment or house wonder about assembling pipelines from metal-plastic pipes. In reality, there is nothing complicated about this, however, like any other work, the installation of metal-plastic pipes contains its own nuances and subtleties. Therefore, below I will tell you in detail about all the methods for assembling a pipeline from “metal-plastic”.

Pipeline made of metal-plastic pipes

Products and their markings

What to look for during the selection process? To avoid mistakes, you need to understand the variety of assortments of both domestic and foreign production. All produced polypropylene products have their own marking:

What color products are there?

Available in four colors:

• black;
• green;
• white;
• gray.

White and gray products are used to create utility lines. However, white products are not suitable for outdoor plumbing. They are intended exclusively for internal use, since at zero temperature they begin to crystallize. Can withstand a maximum pressure of 25 bar.

Gray products are more practical. Their advantages include:

1. Environmental cleanliness.
2. Long service life.
3. Chemical and thermal stability.
4. Use in pressure systems.
5. High level of tightness.
6. To make the connection you need a regular soldering iron.

Black products are more suitable for sewerage. In their production, special additives are used to improve technical capabilities. They are not afraid of aggressive environments and ultraviolet radiation. The strength indicator is impressive, as is the service life. An irreplaceable thing for watering is green products. They are inexpensive, but durable and practical.

Is it possible to hide heating in the walls?

Many people are interested in whether it is possible to hide heating pipes in the wall. There are quite a lot of supporters and people with opposing opinions of the described method. Some argue that this cannot be done, others say that it is possible to hide the heating in the wall.

So, is it still possible or not? Which opinion is correct, and what are the pros and cons of such decisions? And, in order not to keep the intrigue for long, you need to answer that you can use this method. And they use it very often.

This is an effective option for hiding unsightly pipes in your home. There is no technical need for such actions, and in terms of operation it is quite possible to do without it.

Consensus on this issue, as well as on the only correct version of the gasket, has not yet been found. Therefore, everyone will make their own decisions, after carefully weighing all the pros and cons.

Distinctive features of polypropylene

Currently, these products have replaced steel structures due to the following advantages:

• aesthetic appearance;
• wide area of ​​use;
• duration of the operating period (for cold water - 100 years, for hot water - 50 years);
• no fear of high blood pressure and significant temperature changes;
• low specific gravity;
• increased rigidity and strength;
• resistance to chemical components;
• environmental cleanliness;
• excellent sound-absorbing properties;
• vibration resistance;
• low thermal conductivity;
• maintainability;
• ease of installation;
• no operating costs;
• no silting of the inner surface;
• impossibility of corrosion;
• ease of use;
• reasonable cost.

In addition to a lot of positive characteristics, it is not without drawbacks. There are few of them, but it is worth paying attention to them:

• limited plasticity;
• slight linear expansion;
• fear of ultraviolet radiation;
• unacceptability of low temperatures (except for ferrous products).

Application area

Plastic and metal, combining positive qualities, made it possible to use products in different directions:

• heating;
• internal and external water supply systems;
• transportation of toxic liquids, liquefied gas;
• compressed air supply;
• cable protection;
• provision of irrigation systems.

Kinds

Which variety is best to buy depends on many factors, including the scope of application. But first it’s worth finding out what products are produced. Popular models are available without reinforcement and reinforced. The last option is divided into the following groups:

1. Fiberglass reinforced. They are characterized by high rigidity and low thermal expansion.
2. Reinforced with aluminum foil (perforated or solid). In production, a static polypropylene copolymer is used. They come in gray color. Quite durable. They have automatic stabilization.
3. Reinforced with basalt fiber. The reinforcing layer is basalt. A distinctive feature is heat resistance and resistance to pressure changes.

You can find both smooth and corrugated designs on the market. Corrugated products with large diameters are used for sewerage equipment, drainage systems, drainage of rainwater and groundwater. The maximum operating temperature is 60 degrees Celsius. It will briefly reach 100 degrees. No special equipment is used to install the systems. The main advantages of the designs are considered to be:

• significant throughput;
• increased ring rigidity;
• resistance to corrosion and chemical components;
• opposition to the influence of stray currents;
• high hydroabrasive wear;
• long service life.

Installation technology

types of fittings
When installing a water supply system from metal-plastic pipes, you cannot do without additional materials and tools.

Tools that may be needed when working:

• pipe cutter or hacksaw for metal;
• calibrator;
• roulette;
• spanners;
• pliers or press (when using press fittings);

The first thing you should purchase from materials is fittings and clips for fixing the pipe to the floor or wall.

A fitting is a connecting part of a pipeline used during the installation of a water supply system; it is used for branching, transition to a different diameter, and also serves to connect pipes of dissimilar materials. The purpose of the fitting depends on its design. If it is necessary to connect a metal-plastic pipe with a tap or metal pipe, then a collet-thread system fitting is selected. If between each other, then a collet-collet system is used.

In addition to collet fittings, there are designs with a crimping mechanism , which fixes a metal-plastic pipe by circularly crimping the pipe with special pliers or a press. This option is more reliable in operation, installation takes less time, but the cost of the work increases significantly, primarily due to the need to purchase special tools.

How to choose

Everyone's selection criteria are different. Some are interested in the question of what it costs, others study the functionality, others choose the best options, and others check the wall thickness. Everyone is right in their own way. However, experts recommend paying attention to the following indicators:

1. Diameter. Much depends on the scope of application. For internal apartment water supply, a sufficient diameter of 20 - 25 mm. Suitable diameters for risers are from 32 to 40 mm.
2. Maximum permissible pressure. All polypropylene structures, except PN10, are suitable for domestic use. They are produced with thin walls, but withstand significant pressure (10 atm.). They won't serve for long. Trunk pipelines are installed from thicker elements.
3. Thermal expansion coefficient. Depends on the choice of installation method. Thus, PN 20 models are not laid using the open method. It can bend and lose its original characteristics, as well as spoil the appearance of the object. The open method is provided for laying polypropylene structures reinforced with aluminum or fiberglass.
4. The maximum permissible temperature reading. The type of coolant that is to be transported inside the pipeline plays a big role. Products PN 16 are suitable for cold water supply systems, PN 25 - for heating systems, PN 20 - for hot water supply.
5. Strength. The indicator is high, but if the products are strongly compressed or when bent, cracks may occur. This must be taken into account during the installation process.
6. Heat resistance. It is assumed that the ambient temperature is not expected to be too low. The optimal option is +15 degrees Celsius, although it will withstand temperatures of 171 degrees, only for a short time.
7. Density. The indicator is 0.91 kg/cc. Polypropylene is wear-resistant and hard, and will withstand interaction with abrasive particles.
8. Persistence. Not afraid of unfavorable environments. It can become unusable only after prolonged “communication” with a strong acid or high temperatures. Salts and impurities cannot harm the product.

Which company is better to purchase products depends on personal preferences. Advice is inappropriate here. Where can I buy? According to buyers, it is best to visit branded stores. There is more choice, and you can chat with a professional manager who will not only introduce you to new products, but also help you make the right choice. You can order products online in an online store, having previously read user reviews, reviewed the product offered, and made sure of the integrity of the supplier.

Building up

In situations where it is necessary to extend the pipeline, adapters or so-called fittings are used.
The use of such devices makes it possible to extend the total length of the pipeline by the required distance. Depending on the needs and tasks, the following types of fittings are used:

• adapter collet-nut, collet-fitting or collet-collet;
• corner collet-nut, collet-fitting or collet-collet;
• collet-nut/fitting/collet tee;
• tee three collets;
• crosspiece;
• water socket collet-nut/two collet-nut.

Rating of quality products from domestic manufacturers and joint companies

Pro Aqua

The Russian company supplies the market with high-quality polypropylene structures. Has its own production facilities. Uses equipment from leading European companies: Zwick, Binder, Sciteq. Has its own laboratory for testing. Manufactures products for laying sewerage and water supply systems. Elements for industrial and household purposes are produced. The reviews are only positive. The elements are not afraid of severe frosts, are easy to assemble, and last a long time.

Sold at a price of 80 rubles per linear meter.

polymer pipes Pro Aqua

Advantages:

• compliance with GOST 17025-2006;
• the presence of our own certification laboratory, where products undergo 60 tests;
• use of European equipment;
• reliability;
• durability;
• maintainability.

Flaws:

• when interacting with steam (110 degrees) they may sag;
• swelling occurs on the surface.

RVC

The company has been on the market for more than 30 years. They belong to the budget category. Product specifications are average. They are extremely popular among professional builders for their affordable price and quality. Throughput diameter – from 16 to 52 mm. Withstands pressure of 20 - 25 atmospheres. Wall thickness – 3.4 mm. They are made from polypropylene granules supplied from abroad. Sold in all specialized retail outlets. Can be ordered in the online store. The elements do not tear or break. They maintain tightness for a long time. Suitable for drinking water and technical water supply. The length of the structure is 2 meters.

The average price is 53 rubles.

polymer pipes RVK

Advantages:

• good thickness;
• products reinforced with fiberglass or aluminum are produced;
• high-quality employees;
• defective items are not available for sale;
• inexpensive.

Flaws:

• melt easily (you need to work carefully with a soldering iron);
• You need to purchase additional couplings.

Valtec

The Russian-Italian company was created in 2002. Manufactures products for the installation of water and heat supply systems. The company's rating is quite high. The quality of manufactured goods is controlled at all stages of production, so there are no defects on sale. The company interacts with many developers. The manufacturer provides a long-term warranty on the structure (10 years). They are flexible. Quite inexpensive. Suitable for installing internal water supply, including for a private home. The material used is high quality.

The average price is 100 rubles.

Valtec polymer pipes

Advantages:

• Availability of available technical support;
• sold in any company store;
• quality guarantee from the manufacturer;
• use of innovative technologies;
• reliability;
• safety;
• environmental cleanliness.

Flaws:

• overpriced.

Installation tool

Special tools will be needed to install metal-plastic pipes using press fittings. It is designed for cutting pipe sections of the required length, shaping them to round ends and the required internal diameter, and pressing the fitting sleeve onto the pipe.

Press jaws

Pressing pliers are required to compress the liner onto the outer pipe casing. Their working surface has a shaped shape, which allows you to effectively compress the sleeve with the best coefficient of adhesion.

It is worth noting that thin-walled metal pipes made of steel with a protective coating, stainless steel and copper are also mounted by pressing. In our country they are not so widely used due to the too high cost of pipes and fittings, as well as the most professional crimping tools.

Therefore, many modern pressing pliers are produced with replaceable nozzles for metal-plastic, as well as thin-walled copper and stainless steel pipes, produced according to different production technologies and standards in the USA, Canada, and Australia.

Rice. 9 Manual press jaws and their equipment

Press pliers for metal-plastic pipes - types, models, how to use. When installing metal-plastic pipes, it may be useful to read about the types and popular brands of press pliers, as well as the technology for crimping pipes with hand pliers!

Manual

Hand-held mechanical tools in the form of pliers with long handles, which can be extended in many models to create a more powerful clamping force, are produced with interchangeable attachments in sizes 16, 20, 26, and 32 mm. It is worth noting that most hand-held work tools do not work with the 32 mm size due to the excessive physical effort that must be exerted by the worker for crimping.

Also, hand tools are designed only for working with metal-plastic; for metals, a more powerful hydraulic or electric drive is required.

It is worth noting that it is rational to use hand tools in cases where a one-time installation of metal-plastic pipes is carried out with your own hands. It is unsuitable for professional purposes due to too high energy losses by the worker.

The disadvantages of hand pliers include their high overall dimensions due to long handles, which is not always convenient when working in confined spaces.

Products from foreign manufacturers

Banninger

The company is registered and located in Germany. Representative offices have been opened all over the world, including in our country. Distinctive features of manufactured products: high quality, reliability, safety, wear resistance, long service life. In the manufacture of goods, heat-stabilized polypropylene PP-RCT is used. The manufacturer has launched the production of elements with particularly large diameters. The internal nominal passage ranges from 20 to 125 mm. Products with a diameter of 90 to 125 mm are often used for installing vertical risers in multi-storey residential buildings. To supply process water to enterprises, structures with a diameter of 160 to 400 mm are used.

Purchase price – from 70 rubles.

Banninger polymer pipes

Advantages:

• service life reaches half a century;
• availability of ISO 9001:2008 certificate;
• do not change the chemical composition of the liquid;
• preserve the taste of drinking water;
• are not afraid of alkaline and acidic environments.

Flaws:

• if you order a large batch of goods (up to 330,000 rubles) you will have to wait for some time;
• to install elements with a diameter of 100 - 400 mm, you need to purchase a special soldering iron;
• the fitting is expensive.

Wefatherm

This German company deserves special attention. It produces structures reinforced with aluminum foil or fiberglass. Products are purchased for installation of heating systems, hot water supply, supply of drinking water and for technical needs. Withstands significant pressure. Shut-off valves with transitions to flanges or threads for installing a heated towel rail are also available. Craftsmen have a high opinion of their products. The internal walls of the elements are perfectly smooth, which prevents the formation of plaque, which leads to a decrease in throughput. Linear expansion is minimal. Installation is easy and simple. No special equipment is needed.

The average cost is 150 rubles.

Wefatherm polymer pipes

Advantages:

• versatility;
• functionality;
• strength;
• practicality;
• reliability;
• environmental friendliness;
• no deposits are formed inside;
• The joints are connected without stripping.

Flaws:

• the price is high;
• If you overheat the soldering iron, the joint may become deformed.

Akwatherm

The company has been present on the goods market for more than four decades. Has proven itself on the positive side. Produces exclusively high-quality products. The list includes designs for hot and cold water supply, heating systems and heated floors. Elements are purchased for installation in hotels and high-rise buildings. The product undergoes full testing in our own laboratories. It is distinguished by flexibility, strength, resistance to high pressure, and environmental friendliness. The latest technologies and high-quality equipment are used in production. The structure can be buried underground or carried out in open space. In this case, no additional protection is required.

Purchase price – from 50 rubles.

Akwatherm polymer pipes

Advantages:

• products are extremely popular;
• positive reviews from professionals;
• acceptable price;
• safety;
• reliability;
• long service life;
• installation speed;
• Available in poles and coils.

Flaws:

• not always on sale;
• Some types are only available to order.

Wavin Ekoplastic

The company is the product of a merger of a Czech company and an international corporation. Products are sold in 25 countries. It is extremely popular among domestic craftsmen. Available in skeins and racks. Working pressure – from 10 to 20 atmospheres. Internal diameter control at height. The products belong to a new generation. Reinforcement is carried out with basalt fiber, which allows it to withstand temperatures of 90 degrees. There is virtually no linear expansion. You can lay elements in close proximity to boilers, boilers or other heating devices.

You can purchase the product at a price of 70 rubles.

polymer pipes Wavin Ekoplastic

Advantages:

• light weight;
• different diameter;
• fittings fit the pipes;
• availability of a quality certificate;
• strength;
• reliability;
• safety;
• maintainability;
• wear resistance;
• value for money.

Flaws:

• You can find fakes on sale.

Tevo

The manufacturer belongs to the young category, but the products are very popular all over the world. In addition to polypropylene pipes, the production of manifolds, fasteners, fittings, and shut-off valves has been established. In the manufacture of goods, innovative technologies and high-quality equipment are used. The quality of the material used is excellent. The products are environmentally friendly, reliable, practical, and functional.

The average cost is from 75 rubles.

Tevo polymer pipes

Advantages:

• designs are tested in our own laboratories;
• constant quality control;
• seven-year warranty from the manufacturer;
• use of Borealis raw materials;
• presence of a combination fitting.

Flaws:

• Not available at all retail outlets.

Novaplast

The largest Turkish manufacturer supplies the market with high-quality products. It is extremely popular in more than 50 countries, including France, Germany, Spain, Italy, and Russia. Produced from Borealis granulated polypropylene or Basell raw materials. It is highly environmentally friendly and reliable. Used for installation of heating and water supply systems, including drinking water. The maximum cross-section of pipes is 4.5 mm. Can even be used for gas supply. Widely used in the construction of residential and commercial buildings.

Purchase price – from 130 rubles.

Novaplast polymer pipes

Advantages:

• constant thorough checks of product quality at all stages of production;
• can be placed in concrete structures;
• the internal walls are not affected by lime deposits;
• minimum service life - half a century;
• quality certificate;
• strength;
• practicality;
• ease of installation.

Flaws:

• The distribution network is not very developed.

Supratherm

The Romanian company has been supplying the market with high-quality polypropylene risers and connections for more than a decade. The products are certified by international agencies, there are no claims or complaints about them, they are completely reliable and safe. One of the directions of the enterprise is the production of stabilized pipes reinforced with aluminum foil for reinforcement. No pre-cleaning is required before soldering. Fittings with threaded connection. Mortgages from an Italian manufacturer are used. Puddles and leaks during operation are completely eliminated. Often used to connect heated towel rails, pumps and heating radiators.

Products are offered at a price of 65 rubles per meter.

polymer pipes Supratherm

Advantages:

• a huge number of certificates from international controllers;
• pipes are reinforced with fiberglass or aluminum;
• have both domestic and industrial purposes;
• wide choice of parameters;
• reliability;
• practicality;
• speed of installation;
• high quality.

Flaws:

• Some series are produced with a rough surface.

Pilsa

Another Turkish company that is actively filling the market with polypropylene products. The quality of the product is worthy of respect. Implemented in many countries around the world. It is extremely popular among craftsmen. In Russia you can find it in almost any specialized retail outlet. Withstands pressure of 20 atmospheres. Used for laying hot and cold water supply systems. The catalog contains several options: PPR-Al and PPR Fiberglass (reinforced with aluminum foil or fiber). Recently, the production of PPR Basalttherm pipes (using basalt fiber) has been launched. This model can be used to operate at temperatures up to 110 degrees. Linear extensions are completely absent. The product stands out among its peers with a thick red stripe on the side. Soldering is easy and quick. The soldering iron quickly softens the material, and the connection occurs quickly and without problems.

Sold from 87 rubles.

polymer pipes Pilsa

Advantages:

• resists acids and alkalis;
• withstands high pressure;
• value for money;
• positive reviews;
• safety;
• environmental cleanliness;
• durability;
• purchased for self-installation of systems;
• high quality material.

Flaws:

• There are interruptions in supplies to our country.

FV Plast

The well-known Czech company has been producing products for a quarter of a century. In the manufacture of structures, polypropylene of the third type or polypropylene - copolymers is used. In addition to pipes, the manufacturer offers high-quality fittings, shut-off valves, pipes, tees, elbows, valves and other necessary components of the system. Some models are used when installing heated floors. The throughput diameter varies from 16 to 110 mm. Working pressure indicators are from 16 to 20 atmospheres. The company has long mastered coextrusion technology, so the structures are used for installation in close proximity to boilers and boilers. The company also uses Stabioxy technology, creating an oxygen-protective circuit around the internal channel. This allows you to create an additional barrier for heat exchange, which helps reduce heat loss during transportation from the boiler to the radiator.

Retailers ask for products from 130 rubles.

polymer pipes FV Plast

Advantages:

• wide range of manufactured designs;
• maximum permissible temperature – 90 degrees Celsius;
• there is no need for cleaning before welding;
• reliability;
• long service life;
• installation speed;
• practicality;
• functionality;
• versatility;
• high quality of materials used;
• value for money.

Flaws:

• maximum internal diameter – 110 mm;
• Mainly has a domestic purpose.

Dizayn

The product from the Turkish manufacturer is very popular all over the world due to its durability, reliability and good price-quality ratio. The main purpose is the installation of water supply and heating systems. Independent experts have repeatedly confirmed the quality and environmental friendliness of the manufactured elements, which is confirmed by numerous international certificates. The company constantly introduces innovative technologies and controls the quality of products at every stage of production. Unique technologies make it possible to produce structures that have no analogues in the whole world. This applies to pipes with a diameter of 1600 mm. Large manifolds are able to withstand pressures of 12.5 bar. These products are used in industrial enterprises and large construction sites. It can be placed in tunnels and mines.

The product is sold at an average price of 135 rubles.

polymer pipes Dizayn

Advantages:

• reliability;
• quality;
• practicality;
• functionality;
• versatility;
• with corrosion protection function;
• affordable price;
• the level of linear thermal expansion is small;
• plastic and reinforced devices are produced;
• availability of international quality certificates.

Flaws:

• Some lines are produced in the Middle Kingdom, so the quality of an individual batch may be “lame”.

Blue Ocean

Despite their Chinese origin, the designs are distinguished by their quality, reliability and long service life. Three options are available: fiberglass reinforced, aluminum and conventional pipes. The products have color stripes indicating a certain temperature range of use. The color variety is impressive. On store shelves you can find elements of green, white, gray and blue. This helps to fit them into the existing interior of the room. They have increased flexibility, which is why they are very popular among builders. Ideally mounted in difficult areas (near the wall or ceiling). The pipes can be carefully removed from the surface and soldered.

The average price is 190 rubles.

Blue Ocean polymer pipes

Advantages:

• wide functionality;
• versatility;
• practicality;
• ease of use;
• environmentally friendly product;
• safety;
• various colors;
• reinforced with fiberglass or aluminum.

Flaws:

• the use of low-quality glue by the manufacturer leads to peeling of the foil;
• There is an unpleasant odor during the soldering process.

Which polypropylene pipes are better?

The tests performed on polypropylene pipes made it possible to verify the declared technical and performance characteristics, analyze the complexity of installation, and evaluate the design of pipelines. The parameters of single-layer and multi-layer water conduits made from copolymers with different properties were checked. Products of domestic and foreign brands in different price segments were analyzed. This made it possible to recommend the best materials for heating and water supply systems:

• FV Plast Faser 20 is a universal solution for private and multi-storey buildings;
• Kalde Orange (3202-tfr-500000) – this type of pipe will help save money when laying water supply in the country;
• Banninger G8200FW032 - traditionally high German quality, recommended for water supply systems of commercial real estate;
• Pro Aqua RUBIS SDR6 20 is a universal solution for drinking and hot water supply systems.

What kind of polypropylene pipe should be in order to receive the status of the best in its category? Only products with reinforcement, high technical characteristics and an affordable price are available for this title.

Example of water supply system layout

The wiring diagram is conventionally divided into two options - tee or series and collector.

Series (tee) circuit

The circuit consists of a central pipe connecting cold tap water consumers.
At the same time, install the hot water supply using the same method. The main pipe has the largest diameter because it serves as a collector. The connection is made with tees, which is why the name is tee.

The principle is simple, it ensures the organization of water supply in apartments. The advantage is the small number of pipes used. Disadvantages - the system is suitable for small apartments, since the longer the system, the less water pressure will be at the end or top of the pipeline. Problems with the tee system also arise when a faucet or tank breaks down, since at the time of replacement the plumbers turn off the water completely throughout the apartment.

The connection points in the tee system are hidden under decorative trim without access to the system. If a leak occurs, it will be difficult to determine its location. Partition walls are often dismantled and panels are broken for repairs.

Collector circuit

This scheme is the best option for large modern apartments with a lot of plumbing.
A special feature of this option is the presence of a collector, in which water from the central riser is supplied to the collector, and only then to the consumer. The consumer connection is carried out separately. Advantages:

1. Uniform distribution of water, in which the number of connected devices does not reduce the pressure in the pipe, and the length does not affect the operation of the plumbing.
2. If a plumbing fixture breaks down, you can turn off only it, and not all of them together.
3. Personalizing the characteristics of the plumbing system for a specific device. For this purpose, filters and gearboxes are installed.
4. The water flow can be adjusted up or down if necessary.

Flaws:

1. Material costs at the installation stage.
2. Number of water pipes.
3. Complexity of the system: before connecting the collector, you need to agree on the project.
4. A separate device will be needed if the hot water supply in the apartment is determined centrally.

Water pipes with a shut-off valve are installed between the collector and the central riser.
This is necessary to shut off the water supply if necessary. Depending on the tasks, coarse filters and an emergency protection unit are installed on a section of the water supply. In large spaces, a combination of manifold and tee wiring is used. After installing the collector, pipes are connected from it to the plumbing fixture separately: to hot or cold water. Additionally, filters and reducers are installed, and shut-off valves are installed between the collector and the plumbing point to shut off the water of a separate facility.

Repairing or partially replacing metal-plastic pipes with your own hands is a simple task if you comply with the requirements for installation and fastening of such material. The installed pipeline is easy to dismantle and does not require painting. The pipes are light and flexible, do not corrode, and are durable. You just have to decide on a safe installation option.

Service

Even metal-plastic pipes have their own service life. It is believed that it is 50 years. This statement may be true, but over 50 years you will need to carry out maintenance of the water supply system at least several times. You can do this yourself without disturbing utility workers.

Even if the installation is carried out according to all the rules, leaks may form at the fitting connections over time. There may be several reasons for this:

1. Rubber sealing rings are quickly destroyed, especially by hot water, so they often need to be replaced. In this case, the fitting is unscrewed and the ring is changed. It is better to put a silicone seal.
2. Fitting. The adapter itself may also burst. In this case, simply replace it with a new one.
3. Pipe. Perhaps during installation the cut was made unevenly and the sharp ends led to leakage. In this case, the product is cut again, flared and installed in place. If the pipe itself suddenly bursts, it is not repaired, but replaced entirely.

If you are not sure that you can install the pipes yourself, it is better to contact a qualified plumber. After all, if leakage from pipes ruins the repairs you just made, it is unlikely to give you pleasure. Although, as practice shows, most people successfully cope with the independent installation of metal-plastic pipes.

Instructions for repairing metal-plastic pipes at home

Metal-plastic pipes are one of the highest quality and most effective materials for organizing a complete water supply indoors. Their main feature is flexibility and ease of installation, which significantly reduces the time and effort required to create a water supply network. Despite all the advantages of such products, their durability and wide scope of application, the possibility of failure of the network or its individual parts cannot be ruled out.

Metal-plastic pipes