Most communications that are being laid inside buildings are performed from polymeric materials. Plastic sewer pipes are characterized by high bandwidth, resistance to corrosion, aggressive media and hydrowards, as well as low weight, low noise, lack of deposits and condensate. The service life of products is at least 50 years.

Communications from polymeric materials are relatively simply mounted on trenchless technology, without the use of special tools. When laying, cement mortar is required.

Types of plastic sewer pipes

• Polyvinyl chloride - apply in external systems. PVC pipes for sewage resistant sharp drops Temperatures are used only for wastewater, which are not hot 70 ° C. They have high flexibility, so they can fit into hard to reach places. Strength classification: SN2 - Lungs, SN4 - average, SN8 - heavy. The use of PVC pipes for sewering with aggressive chemical drains is not allowed.
• Polyethylene - are used in the internal and external communications of the pressure type. Pipes are used in temperature range from -40 to 40 ° C and are not intended for hot water.
• Polypropylene - are intended for internal systems. Communications are resistant to the effects of household acids and alkalis, withstand the temperature of the drain up to 100 ° C. Corrugated options are used for outdoor installation.

Installation of pipelines is performed using fittings. They are used when turning, docking, a removal device. Our directory includes models for creating communications of various lengths and configurations. The price is largely determined by the size of the products.

Sewerage is one of the main systems that provide a comfortable existence. modern man. Therefore, its installation and repair is given special attention. Currently, the most popular material for creating a sewer system is plastic. And it is not surprising, because plastic pipes are easy to install, have a low weight, long term Services and stand quite inexpensive. Therefore, they are increasingly displacing cast iron and steel sewers from the construction market.

Advantages of plastic sewage

Plastic sewage has a number of advantages that ensure it is constantly growing popularity. So, inside it is not formed a layering due to the fact that it has a smooth inner surface. The installation of plastic sewage does not require the use of complex tools. For example, it is possible to cut a plastic tube with a simple hacksaw, while burgers do not appear, and even if they appear, they can easily be cleaned.

Thanks modern technologies Plastic, which is used for the manufacture of sewage, is very reliable and durable. You can collect plastic sewer with your own hands without much difficulty and without major material costs. Using thermal treatment, the plastic pipe can be bent at any angle.

The indisputable advantages of plastic sewage are:

• low weight;
• corrosion resistance, influence chemical substances, aggressive drains, etc.;
• democratic price;
• long service life;
• low thermal conductivity.

Types of plastic

Polypropylene

Polypropylene serves to manufacture pipes used in pressure sewage and water supply systems.

Polypropylene characteristics:

• due to the fact that polypropylene is resistant to abrasion, it is perfect for sewering with abrasive runoff;
• pipes made from this materials, due to its small weight, easy to transport and install;
• polypropylene resistant to high temperature: its softening is possible only at a temperature of more than 140ºС, and melting - more than 175ºС;
• polypropylene resistant to aggressive chemical compounds;
• polypropylene is easily destroyed during transportation if the ambient temperature ranges from -5 to -15 ° C. But laid pipes can withstand and lower temperatures;
• state Standard exists only for polypropylene pipeswhich includes copolymers;
• the size of the propylene tube is usually determined by the specifications that the customer defines. Most often they have a diameter of 32 mm, 40 mm, 50 mm, 110 mm;
• the length of the pipes from this material varies in the range from 150 to 3000 mm.

Polyethylene

Characteristics of pipes made of polyethylene:

• this type of pipes is very resistant to alkalis and acids. For example, containers in which electrolytes are stored for charging batteries and alkali to clean the faience are made precisely from polyethylene;
• polyethylene easily withstands low temperatures. When freezing in polyethylene water pipes, they begin to stretch, and as soon as the ice plug melts, again take its original size;
• due to the smoothness of the inner surface of polyethylene pipes in the sewage, the formation of deposits does not occur;
• the disadvantage of this material is its low resistance to high temperatures. But still there are types of polyethylene, which are withstanding up to 80ºС.

Polyethylene corrugated

It is used when creating outdoor sewage. It is made of two layers. In the manufacture of corrugations, only high-quality polyethylene PE63 or PE80 brands are used. Corrugated polyethylene pipes Do not be afraid of the effects of chemical compounds, and due to ring rigs, they have the ability to set to depth from one to twenty meters. The size corrugated pipes From polyethylene for sewage system is determined by GOST 22689.2-89 and is 40, 50, 90 or 110 mm. Polyethylene pressure pipes for GOST 18599-83 have dimensions from 10 cm to 120 cm. Pipes, the diameter of which is more than 160 mm, is made in the form of segments of five to twelve meters. Smaller diameter products can be in the form of segments, bay or coils.

PVC

Polyvinyl chloride, or PVC, the most commonly used material for the manufacture of plastic sewage. PVC sewers are used to create new systems in new buildings, and also used when replacing old sewage systems.

Sewer characteristics from PVC:

• PVC is resistant to various chemical compounds (alkalis, oils, acids, etc.);
• Polyvinyl chloride is not a fuel, but deformed when the temperature is exposed to a temperature of 65-70 degrees, and at a temperature of from 120ºС, it begins to decompose with the release of hydrogen chloride, so it is not necessary to use this material in engineering systemswhere high temperatures may be present;
• PVC is a dielectric, that is, it does not conduct electricity, so it does not require grounding;
• NSPH (non-controlled polyvinyl chloride) Despite its elasticity, with strong blows or bends may break;
• the density of polyvinyl chloride, depending on the brand, can vary from 1.35 to 1.43 g / cm3.

Dimensions of plastic pipes

The size used to create plastic sewage pipes depends on the load on the pipeline and its destination. For example, when installing the sewage in the private house, the tap tubes from the shells and baths must have a diameter of 40-50 mm, and from the toiletz - 100-110 mm. This is due to the fact that during the descent of water from the toilet bowl, in the sewer system comes simultaneously a large number of Water, in addition, solid waste can act from the toilet bowl, which are able to climb the small diameter tube, so it should be used for a toilet to the toilet with a pipe with a diameter of 100-110 mm. Patency of the pipe is determined by the passability of its most narrow section. In the bathroom, the narrow site is the release of a siphon, therefore it does not make sense to use a pipe with a diameter of more than 40-50 mm for the bathroom.

Council. Since plastic pipes, in contrast to cast iron, have a smooth inner surface and, accordingly, are not inclined to form deposits, the diameter of these products from different materials On the same site may vary. So, replace the cast-iron pipe with a diameter of 50 mm can be plastic having a diameter of 40 mm, while the bandwidth of the sewer system will not suffer.

The table below shows recommendations for the selection of pipe sizes for one or another sewage section. These recommendations are approximate and can vary in a large or smaller direction depending on the characteristics of the sewer system and affecting it factors.

Every owner wants everything worked in his farm, nothing broke, it was easy to maintain and install. And the sewage is not an exception. It is necessary that it requires attention as little as possible - it is very uncomfortable if it is clogged, but it is no less unpleasant to clean it. If you want to have a trouble-free wastewater system, pay attention to the plastic pipes for sewage. They gradually displacing cast iron, and all because they are less, they are easier, they have a large range - different diameters And the length, on their smooth walls, deposits are almost not formed, and the service life is about 50 years. All this bouquet of properties and determines their popularity.

Types of plastic sewer pipes

• polyethylene (PE):
  • high pressure (PVD) - for inner layout sewage;
  • low pressure (PND) - it is possible to lay the outside, in trenches (have greater strength);
• polyvinyl chloride (PVC);
• polypropylene (PP)

And further whole line Other thermoplastics and combinations thereof, but they are rare - people prefer to use already known materials.

Plastic material sewer pipe It is selected depending on the scope. For example, a polypropylene is more suitable for laying the sewage inside the house or in the apartment. It has a higher operating temperature range - normally transfers the medium to 70 ° C, briefly up to 95 ° C. In the presence of different household appliances, descending spent hot water into the sewer, it will not be superfluous. PVC pipeshaving more low pricesmore appropriate when laying outdoor sewage - There are usually still mixed, so the temperatures are lower and PVC can take them without harm (working up to + 40 ° C, short-term up to 60 ° C).

Also sewer pipes are smooth and corrugated. Moreover, the corrugated can be not only taps from siphones. There are profiled pipes for sewage with an inner smooth wall and an outer ribbed. They have greater strength - better tolerate loading load (have increased ring rigidity), can be buried to a greater depth. Available diameters from 110 mm to 1200 mm.

Dimensions and diameters

Sewer plastic pipes, in contrast to plumbing and gas, are produced in the form of segments, a length of 50 cm, 100 cm, 200 cm, etc. - Up to 600 cm. Maximum length is 12 meters, but some manufacturers on request can make longer segments. When laying long trails, it is convenient - fewer connections, less possible seats The emergence of problems (leaks or blocking).

More important characteristics plastic pipes - diameter and wall thickness. In the marking, they usually go nearby: the numbers are 160 * 4.2. What decrypts: outside diameter Pipes 160 mm, wall thickness 4.2 mm. It is worth remembering that manufacturers indicate the outer diameter of plastic pipes, and in many calculations and planning it is necessary to know internal. It is easy to calculate: from the outdoor taking a double wall thickness: 160 mm - 4.2 mm * 2 \u003d 151.6 mm. In calculations and tables, the rounded result usually appears - in this case - 150 mm.

In general, the industry produces plastic pipes for sewage with a diameter of 25 mm. The maximum cross section depends on the type of pipe (smooth or corrugated) and the material from which it is made. For example, smooth sewer PVC pipes can be a diameter of up to 630 mm, and profiled two-layer - up to 1200 mm. But these sizes are for homeowners or inhabitants of the apartments. In private housekeeping, mainly diameters up to 100-110 mm are used, rarely up to 160 mm. Sometimes, for a large cottage with large quantity Plumbing devices may need a pipe 200-250 mm in diameter.

How to choose a diameter for connecting plumbing devices

According to the rules, it is necessary to make a calculation, it is completely registered in SNiP 2.04.01085. It's a difficult thing, a lot of data is required, so few people really think as it is necessary. The past practice has made it possible to remove the averaged diameters of polyethylene sewer pipes for each of the plumbing devices. You can safely use these developments - all calculations are usually reduced to these sizes.

As you can see, plastic pipes for sewage with a diameter of 30-40 mm are mainly used. Only for the toilet is needed much larger - 100-110 mm. This is due to the functioning feature - it is necessary to take a large amount of water in a short period of time. At the same time in the pipe there should be a place for air, otherwise it will squeeze water shutters on another plumber and "aromas" from the sewage to the room.

When the device must be remembered by a few more rules:

You still need to not forget about insulation or heating the withdrawal of sewage in a private house. The vertical portion that comes from the output before entering the trench, you need to warm well. Additionally, they often use. In the case of sewage, they usually be laid outside, close to the heat insulating material.

Here, it seems that all. Rules are simple, but if you will be observed, everything will work for a long time and trouble-free.

Features of the installation of plastic sewer pipes

Plastic pipes for sewage from one side end with the socket in which inserted sealing rubber. The segments are connected simply: a smooth edge is inserted into the fuel. Since sizes are strictly normalized for sealed compound This, in principle, is enough. In practice, often the sealing ring is additionally labeled with silicone plumbing sealant.

When installing sewer plastic pipes, sometimes they have to cut them. Do comfortably with hand saw With a metal blade - small teeth are well cut and leave an almost even edge. Also, you can use a grinder or an elet collectrol biz. In any case, before installing a cropped piece, its edge must be processed emery paper With small grain - remove possible burrs, make it smooth. For sticking pieces, some fragment of waste can be hooked, as a result, a block may form in this place. Therefore, carefully smoothed the place of sleep.

When creating a sewer network in a house or apartment often need to make a branch. There are fittings for this - adapters from one diameter, to another, tees, corners with different degrees of rotation, etc.

This article discusses in detail the features of such products such as PVC pipes for sewage: dimensions and prices of plastic elements and additional components used for the installation of the drainage system of wastewater. The text you can find the classification of pipes, their advantages and disadvantages, as well as an overview of catalogs offered by construction shops. This information can be used to select and purchase PVC products to perform sewage installation.

The sewage is constructed on the basis of pipes that are an integral part of the system. During operation, these elements are subjected to static and dynamic loads, therefore, it is necessary to approach thoroughly and pay attention to the technical characteristics.

Polyvinyl chloride products are widely used to arrange both internal and external sewage systems. Among other polymer products, they are considered the most popular and in demand. These plastic products of the cylindrical shape are made on the basis of polyvinyl chloride thermoplastic. This material It has one favorable property, due to which PVC pipes acquire improved characteristics. The fact is that the polyvinyl chloride thermoplastic after temperature processing And the extrusion procedures retains the form.

According to GOST 51613-2000, PVC-free pipes for sewage are tested for impact strength on the Sharpi system. The maximum allowable number of elements that are subject to destruction should not exceed 10%.

Note! An insignificant change in the length of the elements after heating is allowed, but not more than 5%.

GOST is also defined standard dimensions plastic pipes for sewage, as well as limit deviations From the parameters that are permissible in high-quality products. Polyvinyl chloride contains in its composition two components - stabilized chlorine and ethylene. In order to improve performance, the manufacturers are added to the thermoplastic mixtures of various additives. As a result, under the influence of high pressure, a composite connection with a high margin of strength is obtained.

Why it is profitable to buy PVC pipes for sewage

Polymer products have many advantages. Manufacturers endowed plastic pipes with a slight weight, while retaining enough high level Strength. The cost is available for most buyers, therefore consumers prefer precisely this type of product.

To the number the most important advantages also include profitable performance features. The inner walls of polymer pipes have a smooth surface with a minor presence of longitudinal strips and waviness, therefore, the probability of formation of blockages caused by the accumulation of fecal fractions or growths is extremely low. Plastic is not subject to corrosion and shows resistance to the effect of aggressive media.

For the construction of pressure sewers, PVC pipes are fit perfectly. And the installation of the system can be performed own hands. This does not require applications. special equipment. The sale presents a wide variety of sizes and mounting elements, which greatly simplifies the design and installation of the pipeline wiring.

Products intended for laying outdoor sewage is inherent in frost resistance. The term of the efficient operational service of pipes made on the basis of polymers exceeds 50 years. If strictly follow the requirements mounting technologyThe sewer highway will not be subjected to displacement. The docking nodes are often diverged when the level of occurrence is changing groundwater. But if in the installation process there was no disorders, even in such conditions, the system of polymer pipes remains hermetic.

Important! Under the influence of ultraviolet, the operational characteristics of pipes are reduced. Therefore, it is not recommended to store products in places where straight lines will fall on them. sun rays.

Types of plumbing pipes and PVC adapters for sewage

The range of plastic products is very wide, thanks to which consumers can buy plastic pipes for sewageing any modifications and destination. Taking into account the purpose and operational conditions, three categories of elements for the construction of a highway can be distinguished.

All of them are in full compliance with the main sizes. Products with lightweight design (SN-2) are used for sewage laying in zone pedestrian sidewalk. The scope of their application is applied to the recreation areas with green plantings, as well as territories that are not subjected to transport loads.

Pipes with averaged parameters (SN-4) are laid in zones where small transport permeability is observed. Especially for industrial areas there are heavy-type pipes (SN-8). These products are suitable for organizing a sewer system in places with high transport passability.

In addition to straight pipes for the construction of sewage, connective elements are used. With their help, it is possible to organize the rotations of the highway (fittings equipped with a rubber seal). Also, they are based on toilet compounds with sewage system from plastic pipes or articulation between other elements.

The following types of adapters are available on sale:

• couplings for network repair;
• reductions connecting elements with differences in the amount of section;
• tees and crosses to form a wiring of several pipes;
• swivels;
• compensatory nozzles for repair work.

In addition, in stores you can buy plastic sewage hatches to carry out audit. These elements are also used for service Systems when scores arise.

PVC pipes for sewage: dimensions and prices for products

The most demanded diameter of the sewer pipe PVC is 110 mm. Such products are easy and do not cause difficulties during installation. Construction Pipes outdoor systemmay have two-, one- and three-layer structure. The outer layer is made of non-plasticized PVC. In three-layer products, the inner layers are made of foam material having a porous structure. It is a product of recycling.

The connection of the pipe walls is carried out simultaneously using the "hot" technology. As a result, a cylindrical product is obtained from monolithic design. Due to cavities that are formed between the walls, it turns out to reduce the weight of the pipe.

Classification of product rings classification:

1. L - light products that are laid at a depth of 80-200 cm.
2. N - Middle rigidity pipes intended for installation at a depth of 2-6 m.
3. S - Hard products with a large wall thickness, which are able to withstand loads at a depth of 8 m.

Helpful advice! For the organization of the outer system, it is recommended to use two-layer pipes with a corrugated structure. Due to the presence of rigidity with outside Increases the strength of products.

Ring rigidity is marked with an SN abbreviation. Technical specifications pressure pipes and elements for systems, where the movement of drains is carried out by gravity, completely different. In each case, the sewage is subjected to different loads: pressure pressure or influence of gravity. For this reason, the price of sewer plastic pipes of the pressure type is significantly higher than that of elements for self-e-systems.

Pipes of pressure type are presented in three variations that can cope with the influence of pressure at 10, 6 and 12.5 kg per cm².

Sizes and prices of plastic pipes for sewage: Outdoor system

For the construction of the sewage exterior and internal type Products of different sections are used.

Typical dimensions of diameter of plastic pipes for sewage:

• 110 mm - minimum size Sections for external pipes are used to drive outlets in country areas;
• 315 mm - products with such a section are intended for the construction of a common sewer system serving several houses;
• 630 mm - pipes with a maximum section size for the construction of a highway capable of serving a small village.

In addition, to work with the external system will need to buy a sewage pumping hose, made of polyvinyl chloride.

Pricing for fecal hoses:

Pipes for external sewage are manufactured in orange colorTherefore, they can not be confused with other product options. Cylindrical elements may have different length. The most sought-after segments are 0.5, 1 and 2 m. There are other variations, for example, 3 m and 6 m. Some manufacturers have an extended line of size. They offer separate elements 12 cm long

Medium PVC rates Products SN 4 for external sewage:

Price sewer pipe PVC for internal sewage

Trucks intended for arrangement internal system taps, performed in gray color. They have a low price, since these products are characterized by a slight hardness class and are absolutely not suitable for performing outdoor operations. The most sought-after PVC pipes 50 mm in diameter. Although there are other sizes of sections - 32, 40 and 110 mm on sale.

The inner walls of gray pipes are smooth. Elements are connected to each other by the technology "in the socket". The length varies in the range from 25 cm to 3 m, although there are also non-standard dimensions.

Note! Branch connecting plumbing with vertical pipemust fit the diameter of the riser. The use of a smaller cross section is not allowed.

For construction system In the bathroom, it is recommended to use pipes with a cross section of 75 mm. They are suitable for connecting the shower, bidet and washbasin with general sewage. They are characterized by a rather high bandwidth.

For household waste, it is enough for products with a diameter of 50 mm. They are easy, elastic and manifest resistance to high temperatures ( hot water) and the influence of chemicals (in case of cleaning system chemical method). To connect the toilet, it is better to take products with a cross-sectional size of 100-110 mm. They will withstand strong pressure, because they have special resistance.

Sizes and prices PVC pipes for water supply indoors:

Fittings catalog for PVC sewage and product rates

Fittings are used in systems where the temperature of the drain does not exceed 80ºC. Products also withstand short-term dishabited fluid temperature up to 95ºC.

Under the runoff in this case implies:

1. Dirty water from toilet bowl.
2. The waste liquid from the shower and shells.
3. Chemical compounds with pH level within 2-12.

For internal sewage The following details are applied:

• couplings (with an emphasis, full-pass for repair);
• reduction;
• revisions with a lid;
• tees (with an angle of 90, 67, 45º);
• two-plane crosses (with an angle of 90 and 45º);
• plugs;
• single-layer crosses (with an angle of 90 and 45º);
• taps (with an angle of 45, 30 and 90º);
• compensation nozzles.

Practically similarly looks like a set of fittings for an external sewer system, although it does not cost without certain differences.

For external sewage, the following details are applied:

• standard taps (with an angle of 30, 15, 45, 90 and 67º);
• two-tempered taps equipped with rubber rings from two sides;
• standard couplings;
• standard and three-straw tees ( last option with an angle of 90º);
• single-layer crosses (90º);
• mounted horizontally with a slope of 2 cm per 1 m length;
• two-headed siphons.

Medium prices for connecting elements for outdoor system:

Recommendations for the installation of sewage from plastic pipes with their own hands

The sewage system in old buildings was preferably performed from the cast iron. Despite the practicality of this material, sooner or later its replacement is required. For the construction of modern risers, more durable and lightweight materials are used.

Helpful advice! When replacing the pipeline, you can organize ventilation that was absent in the systems of the old type. Thus, it will be possible to eliminate unpleasant sewer smells that can penetrate the room.

Experts recommend even abandoning the use of galvanized and, whose period is not more than 10 years, and preferred polyvinyl chloride or polypropylene products. The shelf life of elements from polymers is 30-50 years.

To dismantle the old sewage, you will need to have the following tools:

• screwdrivers big sizeto get minor details from the system;
• bulgarians with a disc on metal;
• polyethylene film to overlap the hole of the pipe on the cut;
• nail and chisels;
• personal protective equipment (glasses, gloves, apron);
• hammer and perforator;
• scrap and grinding machine.

How to perform the transition from the cast-iron pipe to plastic sewer: dismantling the old system

First you need to designate the necessary indents. The first label is set at a distance of 10 cm from the ceiling level, and the second - at a distance of 80 cm from the tee. In the marked zones, it is necessary to make inscribed with the help of a grinder, a half of the pipe cross section. To the top inscription you should attach a chisel and hit the hammer.

A similar procedure must be made and below. It is necessary to force the hammer to the hammer that the cast-iron pipe split, and it was possible to remove its middle part.
The cutting pipe coming from the ceiling must be closed with a plastic film.

The lower part of the system consists of tee and other connecting elements. To dismantle it will require a scrap or a nail. These tools are necessary in order to break the fixation zones. When this is done, you can delete. In some cases, do not do without the use of the perforator. It allows you to remove cement fixing fastenings.

It is allowed to use a screwdriver or a chisel, with which you can split cement. After that, the tee is removed. If it did not work this procedure, for cutting fitting you can use a grinder, equipped with a disk designed to work with metal surfaces. At the same time, it is necessary to retreat from the termination by about 3 cm. After dismantling the compounds, it should be carefully cleansed by the zones of their placement from dirt, and then process the surface with a grinding machine.

Helpful advice! Before starting work, it is necessary to notify the neighbors, because during the replacement of the pipeline it is impossible to use a bathroom and a bathroom. IN otherwise Water from the upper floors is linked to the room and floods the neighbors from the bottom. For the same reason, all work needs to be carried out as quickly as possible.

Instructions for the installation of sewage from plastic pipes

For execution mounting work It will takes the presence of the following tools and materials:

• pipes with a cross section of 110 mm;
• discharge tee;
• rubber cuffs intended for sealing and fixing fasteners between the PVC pipe and the cropping of the cast-iron system;
• the pipe that provides the transition from the cast-iron pipe to the plastic and vice versa;
• fastenings for pipes;
• soap that will be used as a lubricant to facilitate mounting of fasteners;
• vertical construction level.

The process of installing plastic pipes is carried out in a similar way, only in reverse order. In cuts cast-iron pipes You need to insert rubber sealing cuffs. The adapter is installed on top, it is necessary to install a tee below. The fixation of all elements should be as dense as possible to ensure the tightness of the sewer system. If the tee in the compound goes freely, it can be sealed with a linen winding or sealant on silicone basis.

Polyvinyl chloride pipes (PVC) are famous for its high resistant to chemically active substances, as well as strength, which makes them indispensable when the exterior sewer systems are built.

Low price, low weight and simplicity of assembly of PVC products structures ensured the enormous popularity of this material.

PVC pipe characteristics

The operational parameters of polymer pipes depend on their technical characteristics. There are fundamental properties characteristic exclusively for this material:

• High resistance to mechanical deformations. Thanks to the three-layer manufacturing method and outer corrugation, plastic pipes can be used in external sewage networks at a depth of eight meters.
• Smoothness of the inner surface. Solid elements included in the sewage can be easily moved inside the pipeline.
• Not bad resistance to internal pressure. PVC pipes withstand pressure from 6 to 15 bar. The minimum and maximum values \u200b\u200baffect the wall thickness and the pipe design.
• The presence of temperature limitations. At the medium temperature above 65 degrees or below, the deformation of products made of polymer may occur, which, of course, is a large disadvantage of polyvinyl chloride. Some models admit a short-term increase in temperature to 90 degrees.
• The material has a maximum strength limit for gap in 45-55 MPa (megapascal).
• Almost half a century service life.
• High elasticity, lack of process of accumulation of deposits on the inner walls of the pipeline, resistance to the appearance of rust.
• Smooth inner surface Allows you to avoid subpauition cases.
• PVC pipes are not terrible microorganisms living in uncleanness, as well as ultraviolet rays.
• The wall thickness of plastic pipes varies from 1.3 to 36 millimeters (such thick pipes are used for industrial purposes).

Advantages of plastic pipeline

Pipes for external sewage from PVC can boast many positive qualities:

1. Affordable price. Polyvinyl chloride production technology is a long-established process provided by all necessary equipment.
2. Ease of material. This quality allows you to simplify transportation, installation, maintenance, repair and disassembly of the sewage network - most of the work can be performed alone without any help.
3. Easy installation work. To fasten most of the PVC pipe models, you do not need to use welding machine - the presence of skin with rubber seals Estimates unnecessary troubles. To cut off the required PVC pipeline length, it is enough to purchase a conventional hacksaw.
4. Inflammation resistance. Because of its low flammability, the material can be used in facilities where flammable objects are stored.
5. Lack of toxicity. Material does not highlight harmful substances in environment.
6. Corrosion resistance.
7. The material practically does not enter into chemical ties with alkalis, acids and petroleum products.
8. Small abrasive particles of various origins contained in wastewater Not dangerous for this material.

Disadvantages of plastic pipelines

SAMI a big problem It is that frost resistance of products from PVC leaves much to be desired. Having lowered the temperature of the medium below 15 degrees, it is possible to observe the freezing of pipes from polyvinyl chloride. This problem forces in the construction of external sewage to pay separate attention to the insulation of the drainage design.

Another problem is the complexity of the compound of plastic pipes with metal counterparts. Due to cuts or scratches, the stability of PVC pipes is reduced to physical exertion, therefore, when the plastic is fastened with the metal, it is forbidden to use threaded connections.

And finally, do not forget about the problem of utilization of polymer pipes - the burning of plastic products leads to the release of chlorine into the atmosphere.

Differences of pipes from NFCH from PVC pipes

For pVC manufacturing It is necessary to carry out the polymerization of vinyl chloride. And to obtain the vinyl chloride itself, the oil raw materials and the usual cook salt are used. To obtain polymers with other properties, certain changes make certain changes in the manufacture of PVC products. Exception from plasticizers leads to a more rigid and durable type of PVC, or, in a different, non-controlled polyvinyl chloride (NSLH) - safe plasticwhich is better than other materials suitable for the production of drainage pipes.

• Thanks to the action of plasticizers ( chemical compositions Liquid or solid form), in contact with it, the bases acquire such characteristics such as plasticity, softness, tightness, simplification of processing and reduced labor costs. But here you can not do without negative Parties: Plasticizers contain a chlorine-based chlorine in a small amount. If you do not add a plasticizer, then you can get a strong material that does not enter into chemical reactions with water.

Invented this material in the late 80s of the last century. Nowadays, the most diverse products that require resistance to mechanical deformations are made of mechanical deformation stability - from helmets for American football to skateboards. And there is nothing surprising in this, because this polymer modification is the most strong compared to other types of plastic.

• Resistance to external pressure, stretching and compression is due to the structure of the NSPH molecules. Other plastics molecules are connected directly, while the bonds of the NSPH molecules after the heating process and further cooling the primary mass acquire a cross-shaped structure. This is the secret of the special stiffness of the material compared to the usual PVC.

Experts carefully investigated pipes from the NSPH and concluded that they could be stably served until half a century. Due to this, the outer pressure and non-pressure sewers are so often built from this material.

• NLCH is often called hard PVC.

By appearance NFCH-pipelines differ in the thickness of the walls, length, color and presence of the seven.

Classification of NSPH pipes according to GOST

Depending on the purpose of applying the NFI-pipe, one can divide into three main groups:

• pressure - systems that are discharged with pumping stations;
• non-perm - in other words, samotane pipelines;
• corrugated - suitable for installation work on hard-to-reach areas.

The thicker the wall of the NFCH pipes, the greater the resistance to the deformation they possess. According to this property, the NFCH product can be classified as follows:

• light SN2 - ring rigidity up to 2 kN / m2 (the depth of the trench for laying the pipeline should not be deeper than one meter);
• average SN4 - ring rigidity up to 4 kN / m2 (trench depth up to six meters);
• heavy SN8 - ring rigidity of up to 8 kN / m2 (up to eight meters, pipelines can be laid under the sections where transport is often moved).

In size, non-controlled polyvinyl chloride pipes are divided into:

• NPCH100 (operating pressure up to 10 MPa) and NPI125 (operating pressure up to 12.5 MPa) is an excellent solution for the pressure of the outdoor drainage system;
• NFCH110 - pipes with a three-layer wall (thickness 3.2 mm), length 1, 2, 3, 4 and 6 meters;
• NPCH160 - three-layer walls, wall thickness 4 mm, length 1, 2, 3 and 6 meters, are suitable for the construction of self-sewage sewage, SN2 or SN4 rigidity;
• NFI200 - three-layer pipes, wall thickness of almost 5 mm;
• PVC250 - three-wall pipes with a wall thickness of 6.2 mm are equipped with crop and rubber sealing rings;
• PVC315 - three-layer pipes, the thickness of the walls is 7.7 mm.

According to the fact that the pressure can withstand pressure NFI products can withstand, they are customary to divide into the following classes:

• PN6 - Max. operating pressure 0.6 MPa;
• PN10 - Max. operating pressure 1.0 MPa;
• PN16 - Max. Operating pressure of 1.6 MPa;
• PN20 - Max. Operating pressure 2.0 MPa.

Features of polyvinyl chloride of different colors

Practically in every residential or production facility is present sewer system. Sooner or later, a question associated with the update and replacement of polymer pipelines may arise, and no one is secret that the independent purchase of materials is not the simple. And it is important to understand that color palette Sewer pipes depends on the scope of their application.

To date, manufacturers offer polymer pipes different colors. The existence of color differences is explained by the desire of manufacturers to facilitate the lives of people due to the unification of their products, which simplifies the process of buying the necessary materials.

Consider the main purpose of one or another color:

• Gray, as well as white pipes are designed to serve internal sewer networks. The most common color. Not suitable for external sewer networks due to its technological parameters.
• Material for the production of pipes of black is polyethylene. Products of this color are known for their versatility. But they have their own drawback - direct solar rays are very heated.
• Drainage taps are usually built of green pipes.
• Finally, red sewer pipes, characterized by increased rigidity, are used to lay the external pipeline. On products of this color we will focus in more detail.

In red sewer pipes, PVC 110 or 160 millimeters compared with the products of other colors, resistance to temperature differences and aggressive reagents are much higher. The same can be said about their strength. In the manufacture of this product, polymers have an improved structure. The wall thickness of these pipes is almost twice as much, so they are so reliable.

Redhead pipelines are able to withstand high working pressure, which makes them indispensable in the construction or repair of the outer pressure system of drainage. It is very important that red-haired polymer is perfect for operation in winterwhere it can easily withstand any burden of both internal and external (atmospheric and primer pressure). For example, PVC110 or PVC160 pipes can be safely embedded in a trench depth several meters. But green or gray polymer pipes at such a depth relatively crack and destroy. Low temperatures do not affect the strength of red pipes. On the contrary, they perfectly carry low or very high temperatures.