Polypropylene or metal -plastic

Selecting the appropriate materials for insulation and heating in your home is essential for both comfort and efficiency. Two common materials for piping systems are polypropylene and metal-plastic, among the many other options. It’s crucial for homeowners to carefully consider their options because each material has pros and cons of its own.

Because of their reputation for toughness and corrosion resistance, polypropylene pipes are a dependable option for long-term use. Additionally, they are flexible and lightweight, which facilitates installation and may even reduce costs. Furthermore, polypropylene pipes have superior thermal characteristics that lower energy loss and help to maintain constant temperatures throughout your house.

Metal-plastic pipes, on the other hand, offer a compromise between longevity and ease of installation by fusing the strength of metal with the flexibility of plastic. Homeowners can feel secure knowing that these pipes are frequently utilized in situations where high pressure or temperature fluctuations are an issue. In addition to being long-lasting in a variety of environmental settings, metal-plastic pipes are also resistant to chemical corrosion.

Budget, intended use, and local building codes are important considerations when choosing between metal-plastic and polypropylene pipes. Although polypropylene pipes might seem more economical at first, metal-plastic pipes might be more durable in some situations and end up being less expensive in the long run. Speaking with a qualified installer can also give you important information about which solution best fits your unique requirements and situation.

The decision between metal-plastic and polypropylene pipes ultimately comes down to personal preferences and priorities. You can choose a material that will improve the comfort and efficiency of your home’s heating and insulation system by being aware of its distinct qualities and taking into account aspects like cost, ease of installation, and durability.

How defects arise when working with polypropylene

As per the technology, it is necessary to cut off the polypropylene pipe, measure the depth of immersion in the fitting, degrease and solder, and heat both elements for a specific duration using a pencil. The pipeline’s diameter affects how long the heating process takes. It is worthwhile to pause for a few seconds or to ignore degreasing because otherwise, the connection will appear unreliable and cannot be seen. After two weeks and a year, the joint will calmly pass hydraulic trials and be able to flow.

A soldered connection done correctly

Polypropylene overheating makes identification simpler than undercutting. A side of molten plastic forms outside the junction, inside the coupling or tee, partially or completely overlapping a passing section. However, this annoyance is evident in a cut pipe, where non-healing and overheating defects are difficult to control once installation is complete. Furthermore, these flaws result from uncomfortable stinging conditions and the "masters’" incapacity to qualitatively join polypropylene in any unreachable location.

The overheating has partially blocked the section.

It is very likely that the connected parts won’t discharge when working in extreme cold or frost, so it is always preferable to install PPR at a temperature of at least +10 °C.

Because it is impossible to keep an eye on the compounds, experts advise against hiding polypropylene heating, putting it under a cement screed, or stirring it up in the walls when installing heated floors. Thermal insulation must be used if a highway from the PPR in the wall already needs to be laid. The material’s thermal lengthening, which has an impact on the pipeline fastening technique, is the cause. He must be able to slide inside the mounts so that his ends do not press up against the walls. If there is nowhere for the polypropylene pipes to expand while being heated, then even the best heating pipes will bend.

What are the couplings for plastic pipes

Although there are many options available, the best already use brand No. 602, the new European Latun standard. Although there are numerous types of stitched polyethylene, we believe that a stretch sleeve is the best option. Another cool thing about compression fittings is that you can boldly delay. According to plumbers, no one has ever burst with one, unlike Chinese fittings, where the nut cracks in half when you tighten it. For every taste, there are T-shirts, threaded tees, and discounts. Compression fittings using press technology outside of competition.

An intriguing engineering fix is Hydroe. Short ones: these are placed in concrete, heat units, and the strobes of solid brick homes’ water supplies. extended—during the frame building process, in areas with drywall or SIP panels. There are also plastic and brass fittings.

We believe that the current state of the market is unfair because plastic products should, by definition, be less expensive than metal, plastic, and brass components. A plastic fitting can be evaluated by a promoted trademark even more highly than a brass one. cannot articulate the reasoning, so make your own decisions and think for yourself.

In summary, there is nothing subpar from us in the article. He is chosen and competent professional hands in certain situations. This will determine the service life. Hence, a clear response stating that plastic pipe is not superior.

May there always be clean, warm water in your home!

Metaloplasty heating pipes

The best qualities of both plastic and metal are combined in these pipes, as the name suggests. This pipe is multi-layered; the average is composed of aluminum foil that has been firmly glued to the inner and outer layers of polyethylene.

Metal-plastic heating pipes are practical, easy to use, and have a long service life. These days, building single-story homes as well as multi-story structures frequently use this material.

Leading locations are taken when installing pipes for a system like heating polypropylene or metal-plastic, but metal-plastic should be mentioned. The subsequent benefits:

• metal -plastic pipes are resistant to the action of elevated temperatures;
• The installation of metal-plastic pipes takes place quickly and without any special problems;
• metal -plastic pipes are not prone to corrosion;
• metal -plastic pipes are resistant to any pressure;
• the internal walls of heating elements do not collect any harmful precipitation and salts.

One advantage of the metalloplasty pipe is that air almost never escapes, which extends its service life. Since the pipe does not need to be cleaned for a considerable amount of time, rust or lime do not form on it due to the smoothness of the coating application.

Metal-plastic serves as both a protective barrier and an insulator, preventing the formation of condensation on a polyethylene pipe’s outer layer. Due to the two glue layers, some experts frequently refer to this design as five-layer.

Nevertheless, since this portion of the pipe is most prone to deformation, it is imperative to handle glue directly with extreme caution. Its elastic properties could become less elastic, which could lead to the heating system relaxing and leaking.

Working with metal-plastic is also convenient because the material bends extremely well, negating the need for precise linear dimension adjustments. Due to the fact that some clamps do not need to be installed, the metal-plastic retains its shape extremely well. The most important consideration is to have access to fastener pipe elements because of this design’s versatility, which allows it to be installed fearlessly both inside and outside the home.

It is possible to install the heating system entirely out of metal and plastic or to mix it in with the other materials. One more obvious benefit of these products is that they eliminate the need for complicated welding tasks and complicated tools for functional fastening.

Metaloplasty pipes fastening pipes

When deciding which material—metal, plastic, or polypropylene—is better suited for heating, you must take into account not only the technical aspects of the two options, but also the functional elements of the fastener execution process and features involved in installing complete pipes.

When it comes to metal and plastic, the most common types of pipe fasteners are as follows:

• fittings that are not amenable to the connector. It will not work to disassemble this connection, since the pipes in them are tight without any possibility of cutting down;
• Conventional-type fittings, differently called compression. It is quite difficult to disconnect them, therefore, if necessary, remove the fasteners, it will also be necessary to replace the squeezing ring. Moreover, experts advise doing this procedure only in case of serious necessity, and just do this is not at all;
• detachable fittings, among them there is also a division into threaded and zang elements. Such compound options are quite expensive, but this is due to the fact that their installation makes it possible to disconnect the device from the system more than once.

When thinking about the drawbacks of metalloplasty pipes, one cannot help but notice that since these systems are exposed to UV rays, it is best to shield them from direct sunlight.

Furthermore, installing these pipes close to a fire will not prevent sparks from landing on them and damaging the product’s outer layer. However, the system won’t be seriously harmed by likely mechanical damage because the manufacturers have included a special protective layer for such situations.

Metal -plastic pipes

The three layers of metal-plastic pipes are polypropylene or the same polyethylene on the outside, aluminum in the middle, and stitched polyethylene on the inside.

Every layer is securely adhered to the others. These pipes can bend to 90 degrees or more with ease, which is equivalent to a wide radius. They can endure hot water temperatures when subjected to high pressure. The oxygen impermeability of the pipe wall shields the system from metal parts rusting.

Using crimp and threaded fittings, metal and plastic are joined. Press crescent is required for compressive fittings.

It is sufficient to use an ordinary wrench with threaded fittings.

These compounds leak a lot, especially after several heating and cooling cycles. As a result, you might need to open the connections. Because of this, these compounds are hidden behind the boxes rather than "walled up" into the wall. Of course, in this case, the room’s appearance won’t always be aesthetically pleasing.

The metal-plastic pipe works best for the heating system, especially the warm floor, because it is made of dependable material and is not connected by fittings, unless it is artisanal.

By the way, the cost of imitation pipes can differ greatly from that of high-quality pipes, so Gorky might be persuaded to buy them but later regret it.

Advantages and disadvantages of metal -plastic

Each product has advantages and disadvantages. The following are some of the pipes’ advantages:

• flexibility, which often allows you to do without fittings;
• light weight;
• The temperature of the working environment reaches +950C;
• low temperature deformation;
• resistance to corrosion and the action of aggressive media;
• Slight noise during fluid transportation.

The following are the pipes’ drawbacks:

• the combustibility of the material;
• Elements have different temperature deformations, leading to pipe stratification through glue layers and in places of connection with brass fittings;
• the material does not withstand ultraviolet radiation well;
• low strength at shock loads;
• narrow limits of diameters-16-33 mm;
• pipe rupture when freezing water in it;
• High cost of fittings.

The fitting’s smaller passageway than the pipe’s diameter is another drawback. This increases the resistance to the flow of water.

Description of polypropylene products

The polypropylene pipe is entirely plastic if the metal-plastic composite found inside the structure is made of multiple layers. Only goods with reinforcement in the form of aluminum foil that has been perforated qualify as exceptions. Subsequently, the foil layer is soldered into the plastic rather than glued in like the competitor mentioned above.

In order to provide heat resistance for intra-domestic heating pipelines and DIS plumbing, a copalmer random

Four varieties of polypropylene pipes are available in stores:

1. PN10 (1 MPa) – for HVS with a water temperature of up to +200C and "warm floor" with a working temperature up to +450C.
2. PN16 (1.6 MPa) – for CVS and DIA with a temperature of up to +600C.
3. PN20 (2 MPa) – for DHW (up to +800C).
4. PN25 (2.5 MPa) – for hydraulic devices and central heating pipelines with a coolant temperature of up to +950C.

The lack of glue and the monolithic nature of plastic (even when reinforcement is used) increase the durability of polypropylene pipe products. In this case, the metal plastic option wins.

PPR pipes come in black, white, green, and gray hues. This is just a color in the first three cases to make the wiring easier. Furthermore, the product’s black hue indicates the presence of UV protection-enhancing ingredients.

The aluminum layer in a metal-plastic pipe is roughly halfway through the thickness of the plastic wall. And aluminum is moved to the outside of a polypropylene PN25 product. This layer serves only as reinforcement in this instance. Fiberglass is frequently substituted for aluminum because it handles strengthening duties just as well.

A specialized soldering iron is used to join polypropylene pipes. Dealing with him is simple, even if you haven’t done it much. There is one small detail, though: the connection will prove to be brittle if the polypropylene temperature at the joint’s junction is either too high or too low.

In this instance, working in the cold significantly increases the likelihood of plastic underwear leaks and the related problems. Installing a PPR tube is usually not advised at below-freezing temperatures. Polypropylene pipeline assembly should only be done in rooms with air temperatures above +100C, according to manufacturer recommendations.

Polypropylene pipe fittings are inexpensive to install, but their soldering requires more skill and money than that of a PEX-AL-PEX competitor.

Polypropylene generally has benefits and drawbacks that are comparable to those of metal and plastic. Thermal expansion is the lone exception. Temperature-related deformation of the PPR pipe occurs. This expands as a result of heating plastic, and in this instance, there is nothing to offset the expansion.

After a while, the pipes slump. In addition, they have the ability to end with a plug into the wall or to rest with a turn. And after that, the pipeline could be destroyed.

This feature, which allows for compensating elements and sliding supports in the wiring scheme, is crucial to take into account when installing PPR.

The main tool

A unique instrument called polyfus (also known as soldering iron or iron, in folklore) is used for welding. The heating element has two nozzles installed with the necessary diameters. After inserting the pipe and fitting end into them, they heat up in 6 to 10 seconds. After that, the heated components are taken out and joined together. Welding takes place in a matter of seconds, offering dependable connection strength. After that, disconnecting the details is already impossible.

Polypropylene’s unique qualities enable it to be used as a water source and for heating. The most heat-resistant of its varieties, "Random Copolymer," is utilized in applications where water temperatures are permitted to reach 950C. Should these temperatures rise to 1000C due to work-related malfunctions, the pipeline’s durability remains unaffected.

Pros and cons of metal -plastic

It is important to note that heating pipes made of metal and plastic should not be compared to polypropylene under the same circumstances. Consequently, there’s no use in thinking about detachable joints on collapsible fittings because they are costly and unreliable, even though doing so is simple enough for a novice. Only a press-fit joint with good tightness will do. The same holds true for the strengthening technique; PPR reinforced with aluminum and metal-plastic are taken into consideration for comparison. Let’s talk about the benefits of metal-plastic:

1. Having special ticks, the installation of heating from metal -plastic products is quite simple.
2. The pipe bends and comes in the bays, and therefore is cut into areas of the required length, no extra joints.
3. Thermal lengthening of the material is slightly and does not require a scrupulous approach when fixing long areas.
4. Installation in any weather is possible.
5. It is allowed to lay in any hidden way, including under the screed along with the joints.

Whichever connecting element technology is superior in metal-plastic systems. All that needs to be done is calibrate the end of the cut section, pull it onto the fitting, and then squeeze it out using ticks. Ticks are applied after joining because there aren’t many spots where a soldering iron needs to be inserted between the joined pieces. Metal-plastic bends well under a safe radius with the aid of a spring, significantly simplifying the gasket.

It’s also important to discuss the warm floor, where PPR is not typically used and metal-plastic or stitched polyethylene are the norm. These materials feel good inside the monolith and don’t require compensation, so the entire surface is heated effectively. It is worthwhile to replace them with polypropylene because of its thick walls, lengthening, and joints that are under 90 degrees. This makes it obvious which pipes work best in warm floors right away.

As a point of reference. Cheap, low-quality metal and plastic products are frequently on sale, and in actual use, they are frequently weakened where they bend. Eliminating the leak beneath the screed is a difficult task that requires opening. Those who prefer to use less materials should consider whether inexpensive metal-plastic pipes can be used to heat a floor.

Now, let’s talk about the two main drawbacks of metalloplasty:

• high cost of all elements;
• The pipe variety is limited to a maximum diameter of 63 mm (DN50).

The reduction in the passing section at connection points, where brass fittings are valuable, is another drawback of metalloplasty that proponents of polypropylene heating are continuously aware of. For example, when operating in the central heating system, where the coolant is unclean and chemically aggressive, this causes a rise in the hydraulic resistance of the entire network and the quick "overgrowing" of passageways.

The collapsible fittings are approved; in fact, they really see a narrowing of the diameter in comparison to the metal-plastic passage.

There is some narrowing in high-quality fittings for pressing metal-plastic pipes, but not to the extent that the system’s hydraulics are greatly impacted. It is preferable to turn on the heating, particularly in light of the highways’ covert construction. Our expert shares the following viewpoint, and it is advised that everyone view this topic’s video:

The first option uses metal -plastic for a warm floor

Metaloplasty pipe is a composite marking (MP) product that is considered high-tech. The structure consists of five layers, each of which carries out a specific function. The polyethylene outer and inner layers firmly adhere to the foil inner layer. Between the foil and polyethylene layers are two glue layers that give the entire structure the required stability.

The channel appears to be a sophisticated composite design at first glance. That being said, this design was developed especially for warm floors. Maximum thermal energy transmission takes place because of the metal layer inside the channel. When laying water contours, you can use metal-plastic pipes to create a uniform heating of the floor surface by taking fairly large steps.

Note: The maximum pitch values that can be used when laying a water loop are 35 cm. As the step increases, cold zones—that is, areas of the floor that are not heated—appear on the surface.

Because the walls of the inner layer are smooth, calcium deposits can form in these pipes steadily. For a material like this, corrosion is not horrible. Polyethylene and aluminum foil work together to give the required strength in its entirety, without caving in to the strength of copper pipelines. There are clear benefits and drawbacks to this investment material. Nonetheless, MP-pipe is frequently selected for the installation of warm water floors for a variety of reasons.

The following benefits come with using metal-plastic pipes in a heated floor:

• The metal -plastic pipeline has a low expansion coefficient, which has a beneficial effect on the condition of the concrete screed;
• Water contours are resistant to corrosion and inert in terms of reaction to the effects of chemicals;
• Water heating loops hold the working pressure of the coolant well;
• Heating contours from this material have high sound insulation;
• The pipeline holds the form in the process of pouring the surface with concrete.

Durability is one of the most recent benefits that affects the decision to use this kind of consumable. For thirty to forty years, pipes installed in a concrete screed can operate normally.

Metal-plastic composites maintain their primary technological properties at coolant temperatures of 950C even under operating pressures of up to 10 atmospheres. Practicality and manufacturability-wise, metal-plastic pipes function flawlessly when heating contours are installed. Because the channel is easily bent, contours can be laid out in a variety of ways, including spiral and snake designs with lots of bends.

The subtleties of the technological application of pipelines made of this material are more likely to be the drawbacks of metal-plastic. Included in this are the following:

• With poor manufacturing quality, the stratification of the aluminum and polyethylene layer may occur (the difference in the parameters of linear expansion coefficients);
• The use of metal fittings for connections can lead to the formation on the inner surface of the point of connection of the scale;
• Surption of the fitting during the installation of the pipeline can lead to the formation of a crack on polyethylene;

A sensible, deserving, and justified choice for your home’s flooring is a warm, metal-plastic mix. In this instance, you can save a substantial amount of money on consumables while still receiving a dependable and effective heating system. As a result, you can proceed with the calculations of the pipe consumption required for the installation of heating contours without risk.

Which of them is better

There was a time, long ago, when people preferred metal pipes.

They are currently not as in demand as they were a few decades ago. Meritorious competitors had taken their spot in the market.

Polypropylene and metalloplasty-based communications are not at all a nod to fashion. These materials’ pipes are superior to steel and cast iron structures in every way.

Have you ever installed an expansion tank on a closed-type heating system? Read this helpful article to learn how to install plumbing equipment.

You will discover on this page how much the cost of installing an acrylic bathtub can be.

It is impossible to determine which of these two materials is superior with any degree of certainty. Everything is contingent upon a particular circumstance.

You must pay close attention to their distinctions and distinguishing qualities in order to avoid errors and make the best choice.

On the Internet and in real life, there are ongoing debates about the following topic:

• What to give preference to PVC pipes or matalloplasty.

Opponents of this and other viewpoints do not wish to give up their own beliefs and argue with one another about who is correct.

However, this debate never ends and the situation only helps building companies.

Because the business that can convince an ignorant layperson to purchase the exact product it manufactures will still win.

5 Methods of installation of polypropylene and metal -plastic pipelines

PP-armor is installed utilizing diffusion welding technology and unique fittings. The foundation of this procedure is the partial melting of the pipe and fitting body, followed by the pressing of one component into another. Furthermore, polymer polypropylene chains fragment into individual molecules during melting and revert to their original, ordered state upon solidification. Because of this, the pipes and fittings are joined at the molecular level to create a seam whose strength is equivalent to that of the markers of the entire reinforcement.

Threaded fittings are used to make connections between detective pp-pipe. These elements have two ends, one decorated under the bell and the other not. Furthermore, there may be both internal and external threads at a threaded end. The majority of valves and other shut-off components are screwed into these fittings. Pipelines are designed with separate corners, tees, and couplings in the form of an abrupt connection for turns, branches, docks, and inserts.

In order to install inexhaustible compounds, pressers are required.

Cangy and crimp fittings are used to join metal reinforcement with plastic. Whereas the latter is ineffective, the former form a detachable joint. Despite the fact that corner fittings come in an assortment, you can also save money on them. Plastic reinforcement does, after all, bend within a radius of 80–500 millimeters. You’ll need to use tees, crosses, and combs to arrange the slices, branches, and bounces. Simultaneously, inserting into the valve system eliminates the need for separate fittings because shut-off-regulating products with canging clamps at the ends are available for open sale.

A child could easily use the press that the locksmith will need to install an unusable connection. The actual procedure is no longer challenging for nuts of nuts. Detailed joints are even simpler to collect because the locksmith only needs to add to the fitting’s counter-player after installing the pipe there first. Such simplicity is not seen with reinforcement made of polypropylene. You’ll need to purchase a specialized welding machine for her. Additionally, you can make do with metal and plastic and a standard rock key.

Properties of polypropylene

There was a time when people could not have imagined synthetic pipes.

Since polypropylene pipes offer so many genuine benefits, they became popular right away after being invented in the last century.

Users view propylene pipes’ durability—which lasts for hundreds of years and doesn’t age or rot—as its most valuable feature. The interior surface of propylene-based products is smooth.

Polypropylene is not only durable but also offers the following benefits:

• Inappropriateness to the effects of moisture and mold.
• High environmental friendliness.
• Resistance to temperature differences.
• Increased strength.
• Looks aesthetically and beautiful.
• It differs in low cost.

1 varieties and characteristics of polypropylene pipes

Single-layer and three-layer pipes are the two main categories into which the polypropylene reinforcement variety of products is divided based on structural features. A monolithic pipe composed entirely of polypropylene is the first choice. A more intricate reinforcement of the "pipe in the pipe" format is the second option. Its walls consist of two polypropylene layers with a reinforcing layer sandwiched in between. Furthermore, for reinforcement, foil and regular fiberglass are both utilized.

Physically, the two types of polypropylene pipes are nearly identical:

• Working pressure – up to 2.5 MPa.
• The maximum temperature of the pumped medium is 70-95 ° C (depending on the variety of polypropylene and the presence of reinforcement).
• Operating temperature: up to 120 ° C.
• Thermal conductivity of the walls of reinforcement 0.15 W m/° C.
• Roughness – 0.015.

There are single-layer and three-layer polypropylene pipes.

The resistance to expansion under the influence of high temperature is the only distinction between a single-layer variant and a multilayer analogue. Additionally, if the expansion coefficient of a single-layer pipe is 0.15, the three-layer version’s value is 0.3-0.07. Furthermore, a fiberglass-reinforced pipe exhibits the lowest value.

Four groups can be distinguished based on the kind of structural materials employed in the polypropylene reinforcement variation:

• RRN – option for cold water made of polypropylene homopolymer.
• RRV – pipes for hot and cold water made of polypropylene blockage.
• PPR – fittings for hydraulic devices and heating systems produced from polypropylene randomopolymer.
• PPS is a heat -resistant option from fire -resistant polypropylene.

The variety is split into 34 sizes based on geometry, with a bandwidth ranging from 10 to 1600 millimeters. On the other hand, PP pipes with a diameter ranging from 10 to 40 millimeters are commonly utilized in daily life. The remainder of the size row deviates from the standard somewhat.

Which is better to choose

Metal reinforcement’s effectiveness and dependability progressively disappear into the background. Nowadays, the majority of experts have carefully selected metal-plastic and polypropylene goods. Their construction ensures ease of installation and a lengthy service life.

It is true that choosing between polypropylene pipes and metal-plastic samples is easier said than done. A number of important considerations should be made when selecting a material:

1. When equipping the water supply or a small wiring independently the best option – it is metal -plastic. Everyone is able to mount fitting and a pipe using a simple key.
2. If we are talking about acquiring a system in a finished form, buy polypropylene. The material costs cheaper, and do not have to install it with your own hands. No risks, plus savings.
3. Choose durability? Then only polypropylene samples. With proper installation and lack of damage, such products will last many decades.
4. It is necessary to carry out water supply or heating in the walls, floor and other parts of the house? The choice is obvious – polypropylene. It is better to take samples with reliable reinforcement and inexhaustible formations.
5. When equipping wiring for hot water, buy metal -plastic pipes of the middle price segment. They can withstand a temperature of +110 ° without risks, while polypropylene products are designed for a maximum of +95 °.

After weighing the benefits and drawbacks of the most widely used materials, it is reasonable to conclude that polypropylene is the best choice for the majority of applications. Metal-plastic pipes are not inferior, though, in many aspects. The temperature mode of operation is the only thing that separates them.

Disadvantages of PPR products

Regrettably, polypropylene has more drawbacks than benefits. Experts’ real-world knowledge and evaluations of the content state the following:

• Installation of propylene is difficult;
• pipelines, even reinforced with aluminum, have the property of significantly lengthening when heated;
• It is impossible to control the quality of the joints;
• Due to the fact that the pipes do not bend and are supplied with segments of 4 m long, joints on the highways can arise in the most unexpected and uncomfortable places;
• It is not recommended to assemble the system at low temperatures, and with frost – it is prohibited;
• The large wall thickness makes a polypropylene pipe more dimensional than metal -plastic;
• thickened tees, knees and other fittings take up a lot of space.

Note: Since the defile is a natural occurrence in both metal and plastic, it is not specifically mentioned as a drawback. Inditing inexhaustible compounds as a negative makes no sense because, in order to ensure reliability, the metal-plastic pipes should be pressed together. Furthermore, these joints cannot be taken apart later on.

The most contentious claim causing a lot of dissent among propylene supporters is how difficult it is to install. All over the Internet, people are attempting to demonstrate how simple it is for a novice to learn how to solder polypropylene components, claiming that all it takes is a 15-minute tutorial. Additionally, a video of the employee skillfully joining PPR fittings with pipes and setting up the soldering iron on the table is shown here. In real life, everything is far more intricate; weight is required at joints that are difficult to access.

Installation and operation of pipelines

Different material properties dictate the shape of pipes and call for superior methods for system installation and operation.

Metal -plastic

Bays are where metal-plastic pipes are made. The bay is unwound while the work is being done. The necessary length segment is measured. Cut off with circular scissors or, if working with metal, hacksaws, and straighten by hand.

One of the material’s greatest advantages is its flexibility. The pipe can be bent manually ("on the knee") with a small radius. The internal conductor-lodge (springs) allows metal and plastic to be bent at required angles up to ninety degrees. It is best not to overdo these things, though, as bending at a sharp angle weakens the aluminum layer and causes creases, cracking, and deformation.

Fittings are used to join individual sections together. Two categories exist:

1. Tsang (with a rug nut).
2. Crimping (under pressing).

It is not necessary to use specialized or costly tools to install cangy fittings. It takes two tap (gas) keys or a divorce. An electric or manual press is already used to install compensation fittings.

The rubber or nylon gasket used to seal joints with a united nut is a weak point. It becomes less elastic after a year or two at high temperatures, and it may begin to flow if the heating system’s pressure suddenly changes. Pulled up periodically is necessary to rule out leaks. Consequently, it is preferable to avoid installing fixtures in difficult-to-reach areas or behind a layer of ornamental décor.

This disadvantage is not present in metal-plastic press fittings. Its high tightness allows them to be fully enclosed within the walls.

Here’s how direct installation works:

• Using a template or knife, a pipe cut is controlled (it should be perfectly round);
• The fingered fingering fingering nut is put on the pipe;
• The presence of sealing gaskets is checked;
• The prepared end of the pipe is put on the fitting place of the fitting;
• tightly, without the application of unnecessary efforts, the nut is wrapped.

Fitting installation beneath pressing will differ slightly. Squeezing the connecting element that is installed in the prepped pipe accomplishes the fixation.

Polypropylene pipes

Polypropylene pipes will be released in straight sections up to three meters in length. Polypropylene fittings are used to join individual components.

An outer diameter is slightly undermined and an aluminum layer is removed using a special tool or knife at the end of the pipe.

Here’s how the installation procedure works:

• The prepared pipe is inserted into the fitting hole;
• The plow of the soldering iron is put on the connection;
• The compound is performed.

Polypropylene components melt when heated and unite to form a monolithic structure. Leaks cannot physically form during operation when the installation is done correctly. This lets you do any necessary hidden system wiring.

The pipeline is concealed within the wall or walled up behind finishing.

The typical connecting angles of shaped products (90 °, 60 °, and 45 °) place limits on the angles at which polypropylene pipelines can be bent.

Selecting metal-plastic or polypropylene pipes for heating and insulation systems is an important choice for homeowners. Polypropylene pipes are inexpensive, flexible, and resistant to corrosion and chemical deterioration. They are also simple to install. Conversely, metal-plastic pipes offer strength and durability, making them perfect for high-pressure systems and extremely hot or cold environments. When choosing between the two options, take budget, intended use, and environmental conditions into account. When choosing a material for insulation and heating in your home, carefully consider the benefits and drawbacks of each option. Both materials have advantages.

What are the advantages of metal -polymer pipes for water supply

Water supply pipes made of metal and plastic are incredibly durable and dependable. Their design allowed for this to happen. Multiple layers are present in plastic pipes at once:

1. The internal walls of the pipe include food polyethylene, which makes it possible for pure water passage;
2. After food polyethylene, an adhesive film is underway for reliability;
3. Aluminum foil fixes the product and does not allow the pipe to expand due to changes in temperature;
4. The second layer of thick polyethylene is covered on the outer side of the pipe.

The double layer of polyethylene makes the pipe both incredibly strong and flexible. If your decision to use metal-polymer pipes was correct, their dependable performance is assured for a very long time. Selecting companies that produce high-quality goods is crucial. These pipes are intended to last for more than 50 years.

Metal polymer pipes offer advantages as well as disadvantages.

The following are the primary benefits of metal-polymer pipes:

1. The pipes are elastic;
2. installation occurs without transitions and with any length;
3. Two types of junctions of pipes: compression and compression fitting with thread
4. No special installation skills are required;
5. A neat sophisticated look.

However, these pipes come with some drawbacks:

1. The diameter is less than that of polypropylene. Therefore, you cannot make large networks from pipes;
2. Such pipes will not withstand the temperature of more than 75 degrees;
3. Small pressure: 10 atm. If there is more, depressurization will occur and wiring will deteriorate;
4. The course of threaded joints. This is the main drawback. Even if you came across a professional pipe laying master, the pipes will still flow;
5. need for a seal;
6. Metal polymer pipes are not quite environmentally friendly.

The pipes are dependable on their own, but with time, two possible flaws could emerge: flow and the requirement for compaction. Thus, keep in mind their absence if you select such pipes.

Metal -plastic pipes

Products made by metaloplasty have a multilayer reinforced structure with an aluminum pipe frame that is between 0.2 and 2 mm thick.

The product has a thin polymer shell covering both the inside and the outside.

Aluminum and plastic layers are fused together using a unique, highly resilient adhesive.

The clay layer reduces the amount of material stretching caused by high temperatures and acts as a barrier to oxygen leaks inside hollow objects, prolonging their useful lives.

Benefits of products made of plastic and metal.

• Slight weight.
• The suppleness of the material solves in a positive direction the issue with a large number of fittings.
• Fast and simple installation of the water supply system.
• Stability to the effects of high temperatures.
• Slight increase in size when heated.
• High probability of withstand powerful water pressure in the system.
• A guarantee of the impossibility of the occurrence of a rustal process.
• Due to the lack of deposits on the internal walls of silt and lime plaque, good throughput throughout the entire time of operation of the pipeline.
• Low convective heat transfer.
• Inappropriation of various harmful substances.

Even someone without basic training and experience can mount a person of metalloplasty water supply.

In this instance, unique adapters with grooves are used to connect all of the products.

However, the docking locations frequently leak, particularly if the work was done by an amateur. It is best to entrust this matter to the master who follows a particular procedure.

If the fittings are connected with a guaranteed tightening using special tools—press ticks—they will be attached more consistently.

As we can see, metal-plastic and polypropylene pipes have many of the same advantages. As a result, your decision will soon depend on how many flaws there are.

Product flaws involving metal and plastic.

• Flame fraud.
• Immunity to the effects of ultraviolet radiation.
• High sensitivity to mechanical damage and large loads.
• High probability of leaks in the joints. Therefore, these points must be left to free access so that it would be possible to flow without problems to eliminate.
• The material does not tolerate large surges in the temperature inside the liquid.
• High probability of a breakthrough at the junction of pipes.

You were persuaded of what you should say—that it is practically impossible to determine which pipes are better—polypropylene or metal—plastic.

The family council must decide on this matter after considering all the advantages and disadvantages.

It would also be beneficial to speak with a few experts beforehand and get their advice on the matter.

However, it is not worth it to rely solely on the counsel of masters, particularly those who inspire little faith in you.

Comparison of metalloplasty and polypropylene systems

The conditions under which the pipeline will be used, the opportunities for installation implementation, and the project itself all influence the choice of pipes.

Comparative features of the primary parameters of polypropylene and metalloplasty pipelines.

options	Metal -plastic	polypropylene
wall thickness, flexibility	The walls are thin, elastic products, are easily bent and take the desired configuration	the walls are thick, due to which the products almost do not bend
The likelihood of blockage formation	absent at any condition and water temperature	absent at any condition and water temperature
diameter	from 16 to 63 mm	from 16 to 125 mm
Maximum pressure in water pipelines	25 atmospheres	25 atmospheres
maximum pressure in heating systems	10 atmospheres	7 atmospheres
Maximum temperature	110 degrees	95 degrees 110 degrees for PN25
thermal conductivity	Low	Low
Frost resistance	absent	absent
Temperature drops	low, the product is delapping, becomes unusable	High
installation	The combination of components with a threaded method using seals does not give impeccable strength, there is a likelihood of leaks	Joining the welding connection give high strength of the entire structure without leaks

Choice criteria between metal -plastic and polypropylene

When selecting products for a water supply system installation, it’s important to start with the following considerations:

1. The purpose of the future design. To meet cold water needs, it is advisable to choose polypropylene pipes. They are cheaper and will not flow. Metal -plastic pipes and reinforced polypropylene are suitable for supplying hot water.
2. The quality of the material. The effectiveness and life of the water conduit depends on this. When buying pipes, it is important to evaluate their appearance, get acquainted with the marking, technical documentation and certificates.
3. Technical specifications. Pipes must comply with operation requirements.
4. Installation of structures from both types of pipes is not of extreme complexity. If necessary, you can perform it with your own hands in the presence of elementary skills and tools. A system of metal -plastic pipes should be collected in such a way that there is free access to the places of connection with thread.
5. The cost of metal -plastic pipes that components to them exceeds the costs of a similar project using polypropylene.

Therefore, both materials are typically chosen when setting up a cold water supply system.

Polypropylene is advised for concealed water conduits. For hot water supply: reinforced polypropylene, metal, plastic.

On the advantages of pipelines from polypropylene

Currently, pipes and connecting parts from polypropylene are widely used both in Russia and abroad. As raw materials for pipes, polypropylene has been known for a long time, but only recently the copolymers of propylene with ethylene have been widely used: blocksopolymer (polypropylene type 2) and stateopolymer (polypropylene type 3). The main advantages of pipes from copolymers are propylene is high shock strength and heat resistance. Stroke-polymer pressure pipes can be operated for a long time at a temperature of (75-80) 0C and pressure on the network up to 1.0MPA, and in the non-pressure mode of the pipe from the blockolimal of propylene, they can withstand a long-term exposure to temperatures up to 950C. Pipes from copolymers of propylene with ethylene retain sufficient shock strength and at negative temperatures up to minus 200s. Testing, allowing to make a long -term forecast, confirm the reliability of pipelines from copolymers of propylene for the operation of at least 50 years. You can use them in almost any of the areas existing to date where pipes are used: to bring drinking water, to supply the coolant to heating devices, for the removal of sewage and storm drains, drainage, watering, etc. Moreover, thanks to the ability to vary the properties of raw materials using various additives and structural modifications, you can choose a recipe that can provide an optimal combination of properties for different operating conditions: resistance to high or, conversely, low temperatures, rigidity and relative elasticity, resistance to ultraviolet radiation, soundproofing insulation properties, resistance to fire, etc. In addition, which is especially valuable, polypropylene belongs to the polyolefins class and, like all representatives of this class, is an environmentally friendly product, transferring its quality to products made from it and ensuring the safety of the technological process. It remains only to add to the above that due to the ability of polypropylene to be welded, the process of installing pipes made from it is greatly facilitated, and the reliability of welded joints is the highest compared to other methods and is approaching the strength to the pipes themselves. All this, according to leading experts, allows you to name polypropylene one of the most promising materials for today for the production of pipes and their compounds.

Polypropylene (PP) pipes are more versatile than metal -plastic pipes. Speaking about polypropylene pipes, it should be noted that their quality is significantly affected by the quality of raw materials. The main raw material for polypropylene pipes today is a polypropylene-radio type 3 (PRR 80). Today, all leading manufacturers of polypropylene pipes produce their products from this material. Polypropylene pipes are more rigid than polyethylene, and systems from them are collected using fittings: corners, connecting couplings, etc.P. Thus, the consumption of fittings during the installation of polypropylene systems is usually higher than for metal -plastic systems, however, the cost of polypropylene fitting is several times lower than the cost of the detachable fitting for a metal -plastic system and several tens of times lower than the cost of a stiff. At the same time, the systems from the pp-pipe are ineffective. They are mounted by diffusion welding. As a result of this welding, monolithic ineffective, inconsistent compounds of such quality that allows you to remove this type of pipe in a concrete screed, for gypsum plasterboard partitions and ceilings. For the installation of thin branches from the highway with a large diameter, there are special cut fittings- welded saddles. For the joint of the PP-tube with metal parts (cranes, mixers, metal pipes), special fittings with brass threads and polypropylene flange are made in them with brass threads.

Features and technical characteristics of polymers

You must be aware of the materials’ technical properties when selecting a material for home systems. This is required to determine which is preferable, metal-plastic or polypropylene.

Physico-mechanical characteristics of polypropylene

Propylene is polymerized to produce this material. The material is made into white granules or powder form. It is produced both painted and unpainted in some instances.

The following are the material’s primary attributes:

• The density of the substance is 0.91 g/cm3. 2. Strength strength – 300 kgf/cm².
• Relatively lengthening – 15 %.
• Firmness on the Brinell scale – 6.25 kgf/mm².

Physico-mechanical characteristics of polyethylene

Polyethylene is the primary material used in the construction of metal-plastic pipes.

One type of complex polymer is polyethylene. obtained by ethylene polymerization. produced as a mass of white material. Polyethylene is further processed in rolling mills to create a kind of thin, colorless plates.

Polyethylene possesses the subsequent primary attributes:

1. The density of the substance is 0.95 g/cm3. 2. Strength strength – 150 kgf/cm².
2. Relatively lengthening – 18 %.
3. Firmness on the Brinell scale – 2.0 kgf/mm².

Methods for installing different types of plastic pipes

It is worthwhile to take the first type into consideration because polypropylene samples are thought to be superior. Items are installed in accordance with a predetermined plan.

The initial item is a rough estimate. It is predicated on SNiP norms. The type of use of pipes is a decision that each homeowner must make. In this instance, pressure is considered along with the temperature range (cold or hot water). Once all the computations are finished, you can begin twisting or welding components together to form a single structure.

Frequently, the fitting and pipe edges are melted using a specialized welding device to form the connection. Then, the two ends are forced into one another. The idea behind polypropylene fastening is that the seam is created at the molecular level, meaning that its strength and dependability are on par with those of the entire pipe.

Polyethylene presents greater challenges. It is not possible to just weld two details together. Each owner must thus use unique fittings with a press function. Two elements are sealed tightly and a compression is produced by the product when the nut is tightened.

More tees, corners, and couplings are used in complex water supply circuits. They enable the creation of branches to any location throughout the house.

Note: Many experts still believe that welding is the best option for connecting. It completely seals off against water leaks.

However, not everyone can locate an expert in these kinds of tasks. As a result, a rifled mounting technique is used by many. The most common and straightforward kind of threaded connection is the stuffer nut. It is preferable to use "Americans" made for polypropylene tubes for reinsurance.

It completely seals off against water leaks. However, not everyone can locate an expert in these kinds of tasks. As a result, a rifled mounting technique is used by many. The most common and straightforward kind of threaded connection is the stuffer nut. It is preferable to use "Americans" made for polypropylene tubes for reinsurance.

There is one type of docking method that distinguishes metal tubes from plastic tubes. Compressive and zange fittings can be used to increase the structure’s strength and immobility. Unusual connections are made by aspects of clothing. Options for tsang can be changed or promoted at any time.

Because metal and plastic bend easily, you cannot purchase a lot of angular fittings. Combs and crosses are the only parts that will require purchase. Valves are chosen using the same basic idea.

Description of metal -plastic pipes

Aluminum-polyethylene metalloplasty products bring together the best qualities of metal and plastic. It should be noted that when comparing them to a competitor that uses polypropylene, the cost per linear meter is roughly the same in both situations.

Fittings for metalloplasty, however, are significantly more costly than those needed to install PPR pipelines.

The two layers of "stitched" polyethylene and the reinforcing aluminum layer, which has a thickness of 0.2–0.3 mm, are connected to form the metal-plastic pipe (PEX-AL-PEX).

When polyethylene is produced, it is "stitched" at the molecular level. There are absolutely no seams or thread stitches there. The pipe products bearing the PEX-A, PEX-B, and PEX-C markings are identified by three primary manufacturing technologies for this particular plastic.

These production-related quirks don’t significantly alter the pipe’s final properties.

Adhering to the manufacturer’s PEX technology is of greater significance. Additionally, the buyer should focus more on the wall thickness and nominal pressure (pn) indicated on the label.

The function of the product and its operating parameters primarily rely on these two digits.

Between the inner and outer layers of PEX, a thin layer of aluminum is used for:

• partial compensation for thermal expansion of the pipe;
• the formation of a diffusion barrier.

Initially, sewed polyethylene was intended to operate at temperatures as high as +950C. On the other hand, it starts to slightly expand when heated. An aluminum tab is made in between two plastic layers to make up for this extension. The majority of the voltage polyethylene that exists in polyethylene is taken up by metal, preventing plasticity from deforming and expanding excessively.

However, aluminum’s primary function in metal-plastics is to stop oxygen from the room’s air from seeping into the pipe, not to balance out the voltage in polyethylene.

One benefit of metal-plastic pipelines that is important to note is:

• lack of wandering currents;
• constraint of the passage section;
• the smaller noise in comparison with metal analogues;
• lack of expansion of plastic (sagging pipes) as a result of heating water in them;
• simplicity of the installation of the pipeline system.

Plastic made of metal can tolerate a brief rise in water temperature inside to +1150C. Plus ninety-five degrees Celsius is normal for him. For heating, "warm floors," and hot water supply systems, metal-plastic pipes are the best option. Because of them, the damaging effects of oxygen on different types of hydraulic pumps and heating boilers and radiators can be reduced.

The following are some drawbacks of metal-plastic pipes:

• aging polyethylene under the direct rays of sunlight;
• the need for grounding for plumbing with a metal case, t.To. plastic is a dielectric;
• the need to extend the fittings a year after the commissioning of the pipeline system.

Metal-plastic pipes need to be protected from direct sunlight with a finish; otherwise, their service life will be drastically shortened. Furthermore, fittings are necessary because temperature deformations of the pipeline occur, which make it impossible to entirely eliminate. The primary disadvantage is that plastic and metal cannot be frozen. He gets corny at the seams from these sudden drops in temperature.

Metal -plastic pipes

Water supply pipes

Actually, a pipe made of metal and plastic is a reinforced product with an aluminum frame. There are five layers total in this multi-layer design: two are composed of adhesive material, and three are made of plastic and aluminum. It turns out that plastic makes up the first and last layers, with aluminum sandwiched in between and glued to plastic planes with a special kind of glue.

We used reinforced polypropylene pipes as an illustration so you could comprehend the fundamentals of the construction. However, they cannot be linked to products made of metal and plastic. High-strength polyethylene and elastic aluminum with a layer thickness of 0.2–0.3 mm are in fact utilized here as plastic components.

These products are manufactured with premium materials and the newest technologies. There is only one technical feature that can be mentioned to demonstrate how excellent these pipes are. They are resistant to coolant pressures up to 70 atm.

Naturally, these pipes are inoperable in such circumstances, which is why the manufacturers list the following features:

• Operating temperature +95s.
• Maximum temperature +130s.
• Working pressure at a temperature of 95C – 10 atm.
• Maximum pressure at a temperature of 25C – 25 atm.
• Under such operating conditions, metal -plastic pipes will work for more than 50 years.

All of the previously mentioned information regarding polypropylene products applies to everything from metal to plastic to pipes. That is to say, a private home’s heating system can be equipped with the same robust and dependable trumpet material.

Compound

However, because different technologies can be used to perform the joints of the metal-plast pipes, the installation process is significantly different.

Which kinds of compounds are there?

• Detachable – tsang or threaded. In this case, two pipes are interconnected by special fittings. As necessary, they can be easily disconnected, and the system is dismantled, transferred to another place and re -mounted. Pipes can be used repeatedly. The same allows you to reduce the complexity of repair work.
• Conditionally detachable. Special fittings are used here, which squeeze parts of the junction using a special squeezing ring. To remake the heating track, you just need to dismantle the ring and replace it during the new connection.
• Steply. In this type of compound, special press fings are used that join the two ends forever. In fact, this is the same soldering, sealed and durable. Such a squima is carried out on special equipment. It costs not cheap, so by home masters this option of assembling heating is used very rarely.

Take note! It is advised to buy the pipe metal plate and the fittings that connect them from the same manufacturer. Defects

Flaws

When the benefits of two product types are nearly identical, the drawbacks differ. Ultimately, polyethylene is more vulnerable to the harmful consequences of harsh and natural environments:

• Metal -plastic is afraid of direct sunlight. Under their action, it changes color and structure. In addition, it does not withstand large mechanical loads and high temperature.
• Typically, in a threaded connection, fittings are used, the diameter of which is much smaller than the diameter of the pipe. This, firstly, reduces the passage for the coolant, which negatively affects its circulation. And, secondly, it creates the likelihood that it is in this place that the hole is overgrowing if the quality of the coolant is not at the height.
• It is very important when docking do not extinguish the pitch nut. The consequences can be the most unpleasant. For example, an incision will remain, and then a crack will appear and rupture.

Polypropylene	Metal-plastic
Lower cost	Higher initial cost
Lightweight and easy to install	More durable and rigid
Less resistant to high temperatures	Resistant to high temperatures
Prone to damage from UV rays	UV-resistant
Less suitable for outdoor use	Suitable for outdoor use

There are a number of things to take into account when deciding between metal-plastic and polypropylene for your home’s heating and insulation systems. Each material has pros and cons of its own that can significantly affect how effective and efficient your heating system is.

Because of their well-known flexibility, polypropylene pipes are simpler to install in confined areas and around corners. Additionally, they have chemical and corrosion resistance, which guarantees their longevity. Furthermore, polypropylene pipes have superior thermal insulation qualities that lower energy costs by assisting in the system’s heat retention.

However, when compared to polypropylene, metal-plastic pipes offer better strength and rigidity. This guarantees their long-term dependability and qualifies them for high-pressure applications. Additionally, the smooth inner surface of metal-plastic pipes reduces friction and pressure loss within the system, improving efficiency.

But before you decide, you must take into account the particular needs of your insulation and heating project. It is important to consider various factors, including the budget, installation complexity, desired lifespan, and environmental conditions. A professional installer or contractor can also offer insightful advice on the type of material that will work best for your needs.

To sum up, metal-plastic and polypropylene pipes each have special benefits and uses in insulation and heating systems. The decision between the two will ultimately be based on a number of variables, such as the demands of the project, financial limitations, and long-term objectives. You can guarantee the effectiveness and success of your home heating system by carefully weighing these variables and, when necessary, consulting an expert.

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