PVC sewage pipe. PVC sewer pipes. According to manufacturing technology

The wastewilling system has been consisting of special sewage pipes that can be used directly for external networks. It is from them that the reliability and durability of the future system will depend on. It is important to choose the right material correctly. At the present stage, cast iron, polyethylene, ceramic and PVC pipes are used for sewage work. The latter option is used quite often due to their high quality and strength.

PVC pipes external must have the following qualities:

High strength;
Considerable durability and pronounced durability;
Resistance to the action of aggressive chemical and physical factors;
The ability to withstand a large temperature difference (lack of deformations and cracking).

However, we should not forget that high quality pipes will not be perfect if the installation errors will be present. Therefore, in addition to competent and qualified selection, it is necessary to mount them qualitatively and unmistakably. PVC external pipes are mounted by the fusey method using rubber cuffs that provide maximum tightness. Externally, PVC pipes outdoor differ from the internal color - outer pipes of red-colored.

PVC pipes for external sewage

Thanks to its basic qualities, PVC pipes for external sewage are widely used to improve new lines, and to replace worn and damaged areas in old systems. It is used for any sewage types (household, industrial and sediment). At the same time, the maximum temperature should be no higher than 60 degrees. Polyvinyl chloride pipes are distinguished by a slight weight, which allows them to quickly and easily mount without applying additional skills and a special tool set.

PVC pipes for the outer sewage is resistant to corrosion action and the formation of precipitate on the inner surfaces. Stock Watches with sand or small stones absolutely will not damage the walls of the pipes, which speaks of their high wear resistance. Therefore, they are often used in industrial drains. For various loads, appropriate types of pipes are used, which are represented by the SN4 and SN8 classes. PVC Class SN8 pipes are tougher and can withstand heavy loads, but are made only under the order. All products are made of durable and well-resistant material that passes a multi-step test for quality and has appropriate certificates.

PVC pipe for external sewage Price

Before you buy a PVC pipe for external sewage, decide on its purpose and sizes.

PVC tube for outdoor sewage, the price of which is always presented in our catalog, has an optimal ratio of pricing policy and high quality. It will suit well for the sewer work of a wide range of destination, will provide ease of installation and transportation. Her reliability will significantly reduce the number of repair work.

Tera-Plast company sells PVC pipe at producer prices Wholesale and retail. Our trading and manufacturing company is confidently evolving since 2012. We can order in any volume of the product to create high-length pipelines. Thanks to your own fleet to buy PVC pipes for external sewage you can with delivery to the object. Delivery - within 1 one day in the Moscow region.

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.
The smooth inner surface allows you to avoid cases of lowering the pressure.
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:

Affordable price. Polyvinyl chloride production technology is a long-established process provided by all necessary equipment.
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.
Easy installation work. To bond most models of PVC pipes, it is not necessary to use the welding machine - the presence of fubs with rubber seals eliminates unnecessary hassle. To cut off the required PVC pipeline length, it is enough to purchase a conventional hacksaw.
Inflammation resistance. Because of its low flammability, the material can be used in facilities where flammable objects are stored.
Lack of toxicity. The material does not allocate harmful substances into the environment.
Corrosion resistance.
The material practically does not enter into chemical bonds with alkalis, acids and petroleum products.
Small abrasive particles of various origins contained in wastewater are not dangerous for this material.

Disadvantages of plastic pipelines

The biggest problem lies in the fact that the 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 the manufacture of PVC, 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. An exception from the composition of plasticizers leads to a more rigid and durable type of PVC, or, in a different, non-controlled polyvinyl chloride (NSA) - safe plastic, which is better suited for the production of water supply pipes.

Due to the action of plasticizers (chemical compositions of liquid or solid form), the bases in contact with it acquire such characteristics as the plasticity, softness, tightness, simplification of processing and reduced labor costs. But here it is not necessary to do without negative sides: 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.

According to the appearance of the NFI-pipelines, the wall thickness, length, color and the presence of the skin differ.

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

In almost every residential or production facility there is a 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 the color palette of sewage pipes depends on the region of their application.

To date, manufacturers offer polymer pipes of 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 the red-haired polymer is perfect for operation in a winter period, where it can easily withstand any load, 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.

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 to sharp temperature differences are used for wastewater, which are not hot 70 ° C. They have high flexibility, so they can fit in 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 the 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.

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 cost less, they are easier mounted, have a large range - different diameters and lengths, there are almost no deposits on their smooth walls, 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 internal sewage layout;
- low pressure (PND) - it is possible to lay the outside, in trenches (have greater strength);
polyvinyl chloride (PVC);
polypropylene (PP)

And still a number of other thermoplastics and their combinations, but they are rare - people prefer to use already known materials.

The material of plastic sewer pipes is selected depending on the application. 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 various household appliances, descending the spent hot water into the sewer, it will not be superfluous. PVC pipes that have lower prices are more 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 places for the appearance of problems (leakage or blocking).

Another important characteristics of plastic pipes are diameter and wall thickness. In the marking, they usually go nearby: the numbers are 160 * 4.2. What decrypts: the outer diameter of the pipe is 160 mm, the wall thickness is 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 a large number of plumbing devices, a pipe is 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.

Name of the plumbing device	Diameter of plastic sewer pipe	Bias	Distance between central plum and siphon
Bath	40 mm	1:30	100-130 cm
Shower	40 mm	1:48	150-170 cm
Toilet	100 mm	1:20	up to 600 cm
Sink	40 mm	1:12	from 0 to 80 cm
Bidet	30-40 mm	1:20	70-100 cm
Kitchen sink	30-40 mm	1:36	130-150 cm
Combined Drain - Bath, Wash, Shower	50 mm	1:48	170-230 cm
Central Outline	100-110 mm
Taps from central riser	65-75 cm

As you can see, plastic pipes for sewage with a diameter of 30-40 mm are mainly used. Only for the toilet is necessary much larger size - 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 the sealing gum is inserted. The segments are connected simply: a smooth edge is inserted into the fuel. Since the dimensions are strictly normalized, for a hermetic connection of this, in principle, sufficiently. In practice, often the sealing ring is additionally labeled with silicone plumbing sealant.

When installing sewer plastic pipes, sometimes they have to cut them. It is convenient to do with the help of a hand saw with a web for metal - small teeth are well cut and leave an almost smooth edge. Also, you can use a grinder or an elet collectrol biz. In any case, before installing the cropped piece, its edge must be treated with sandpaper 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.

Plastic pipes today have almost completely supplanted metallic analogues from the sewage systems. They have such operational advantages as durability, low cost, minimum weight and simplicity of installation, which is achieved through the use of sewage fittings, which we will talk about in this article.

You will learn which fittings for sewage exist and from which materials they are produced. Varieties of fittings will be considered, their sizes and recommendations on the installation of the sewer system are provided with their own hands.

Building articles

Application of plastic products in sewage communications

For the arrangement of sewage systems, pipes and fittings are used from such materials as PVC (polyvinyl chloride), PE (polyethylene) and PN (polypropylene). Unlike steel and cast iron products that are connected by welding, mount plastic pipes is much easier, since their docking does not require special equipment.

The advantages of plastic sewage fittings include:

low weight, which facilitates their transportation and installation;
long service life - the operational resource of the polymer pipeline comes to 50 years, which is achieved due to the total stability of the material to corrosion and chemically aggressive substances;
wide temperature regime - can be used to remove hot water flows to 95 degrees;
an extensive fitting sorting, different forms and dimensions of which allow you to form a sewer pipeline of any configuration.

Present shaped elements used to connect individual pipes with each other, as well as to connect to the pipeline. Sewer fittings have dimensions corresponding to the diameter of the pipes presented in the market.

According to the provisions GOST №21.604 "Water supply and sewage", To lay internal sewage, you must use the following sizes of PVC pipes:

plum tube bath - diameter 40 mm (stacked with a slope of 1:30);
shower - diameter 40 mm (bias 1:48);
toilet bowl - diameter of 110 mm (bias 1:20);
sink - diameter 40 mm (slope 1:12);
bidet - diameter 40 mm (bias 1:20);
washing - diameter 40 mm (slope 1:36);
combined drain on shower, bath and sink - diameter 50 mm (bias 1:48);
central riser - diameter of 110 mm;
taps from central riser - 60 mm.

For installation of external communications you need to apply pipe diameter 160-200 mm. Sewer pipes and PVC fittings are selected so that their dimensions correspond to each other.

Features of the selection of pipes and fittings for sewage (video)

Classification of sewer fittings

A variety of connecting elements used for the installation of pipelines is classified in two parameters - the scope of application and the compound method. According to the design of the design, they are divided into fittings intended for installation of internal sewage, and products for external systems.

Depending on the connection method, the sewage fittings are classified on:

open (inside the plastic design, a rubber sealing ring is installed), which provides a solid fixation of the pipe and the tightness of the entire system;
under gluing, without a sealing ring.

In terms of reliability and durability, adhesive fittings won, since the rubber seal during operation can lose elasticity and grip, as a result of which a gap is formed between the walls of the United structures, which is the cause of leakage.

As a glue for the installation of PVC sewers, a mixture of polyvinyl chloride and tetrahydrofuran, which, after harvesting, form material for the operational characteristics of a similar plastic, from which the pipes themselves are made.

Verified glue compositions for the installation of polymer pipelines - " Tangit "," Vinylit "," Phoenix "and" Marx ",the acting VN 35-86 "Instructions for the installation of plastic pipes" recommends using " GIPP-127.“.

Varieties of fittings for PVC sewage

Consider the species of fittings for the internal sewage, equipped with a rubber sealing ring:

The coupling is used to connect two parallel pipes among themselves, there are also revision couplings in which the open window is provided for cleaning the system.
Reduction (adapter between different diameters) - is used for docking pipes, the dimensions of which do not coincide, as well as for connecting cast iron products with plastic.
Tee - allows you to perform parallel or inclined branch from the main pipeline, are produced with angle of inclination 45, 65 and 90 degrees.
Two percentage crosses - performs two perpendicular branches on pipes of identical or different diameters, tilt angles - 45 0 and 90 0.
Single-glossy crosses - used to arrange two parallel branches, angles 45 0 and 90 0. With the help of crossops, drain pipes from baths, sinks and plumbing devices to the main riser are most often summed up.
Removal - allows you to rotate in laying two parallel pipes, angles 30, 40 and 90 degrees.
Compensation - used when carrying out repair work to replace the damaged area of \u200b\u200bthe pipeline, which is pre-cut.
The plug - overlaps the transported liquid during repair or revision of the pipeline.
Aerator (sewer valve) - installed on the upper end portion of the sewer rim, blocks the release of sewage gases into the room through the toilet, which may occur due to air discharge inside the riser, in which the water hydraulication is suused from the siphon.

For the installation of external sewage, in addition to the same sorting of the connecting elements as when laying the internal system, the following types of shaped structures are used:

- It is designed to block the reverse stroke of the circulating fluid in the outer pipeline, it is mandatory for less than 2 cm;
two-star siphon - connects two parallel pipes, forming bending on the place of the joint, which creates an obstacle to the reverse course of sewage gases.

The technical requirements and sizes of connecting fittings from PVC are given in the following regulatory documents:

GOST №18559 - for non-pressure sewage;
GOST №52135 - for pressure systems.

Fittings should be selected according to the diameter of the pipes used. The market presents the following sizes of shaped designs for external sewage:

couplings - diameter 110-400 mm (revision coupling up to 315 mm), length 12-33 cm;
taps - ∅ 110-400 mm, the distance between the terminals is 1.5-9 cm;
the tee is 450 - ∅ 110-400, the length of the side fields is 14-53 cm, the height from the end part before the start of the protrusion - 14-50 cm;
check valve - ∅ 110-250, length from 30 to 52 cm;
double siphon - ∅ 110-200 mm, length 51-82 cm.

PVC fittings for mounting internal sewage have a range of diameters from 50 to 200 mm. Plastic clamps are used for fastening pipes on the walls, which are sitting on the carrying structure using two anchors.

Installation and connection of plastic pipeline must be performed in compliance with the following requirements:

Cutting PVC pipes of large sizes is performed by means of a special tool - pipe cutting, which can be replaced by a grinder or hacksaw. The main thing is that the slice is perpendicular to the axis of the pipe, since the hermetic connection cannot be performed in the presence of gaps at the place of the joint.
After cutting, the edge of the pipe must be cleaned from sowing with a file and emery paper.
When using glued fittings, the connecting areas must be preventing it, after which the glue can be applied. The composition is applied with a uniform layer with a brush, excess glue when docking structures are removed by the rag.
If fittings with rubber sealing contact surfaces are used before installation, you need to be covered, which will reduce the risk of leakage. It is necessary to install the pipe not until it stops, and so that it is formed 1 cm compensation gap. You will need to perform a preliminary docking and make an entry border on the pipe.

If done correctly, the sewer pipe will not require repair throughout the life.