What types of plastic pipes are there for sewerage? Diameters of sewer plastic pipes

For high-quality drainage and drainage of water, sewerage pipes are used. They differ both in material and in diametrical cross-section. It is these parameters that affect the quality and timing of the drain. The most common option is a pipe with a diameter of 110 mm. How justified this is, what pros and cons it has, as well as the nuances of installation, we will consider in this article.

Cast iron materials have been used for decades. Their service life is estimated at an average of 80 years. TO positive factors Cast iron products include their durability and high degree of strength. But one cannot fail to note the shortcomings. Products made of cast iron are quite heavy, which makes it difficult to installation work. Also, the surface of cast iron has roughness, which to some extent prevents the passage of water flows and allows elements to build up. As a result, the sewer becomes clogged. And most importantly, this type of pipes has a high price.

Not so long ago, plastic pipes appeared on sale, which turned out to be a good replacement for cast iron. They, in turn, are divided into the following types:

  • PVC pipes have a number of characteristics, such as the ability to use them for low temperatures, high degree of mechanical and chemical stress. But they are afraid high temperatures. For example, the maximum temperature that the material can withstand is 400 0 C. They have different strength indicators, depending on which their scope of application is determined:
  • Light level of strength, for arranging sewer pipelines that are installed at shallow depths without exerting any pressure on them.
  • With medium strength, PVC pipes can be laid across small roads.
  • Heavy PVC pipes are used in industry and can be laid under highways.
  • Polypropylene materials. This type of material is not used for arrangement external sewerage. It is better to use them in conditions where placement in the ground is not required. Usually this arrangement internal sewerage. This is because this material differs from PVC in less rigidity, and most importantly in the possibility of damage by rodents. But it is resistant to high temperatures up to 800 0 C.
  • Polyethylene corrugation. This is one of the most common types of pipes for external sewerage. Their diameter section varies from 200 mm to 800 mm. It's pretty durable material, it can be laid to a depth of up to 15 m. It consists of two layers: an outer corrugated one, which is made of thick polyethylene, and a smooth inner one, which has a smaller thickness.

Advantages of plastic pipe

Plastic products have a number of undeniable advantages. These include:

  • Corrosion resistance. Made from materials that do not react with destructive elements. The service life of plastic is less than that of cast iron, but still reaches 50 years.
  • During operation, plastic pipes do not create much noise, since the smooth inner surface ensures the unhindered passage of water.
  • The environmental friendliness of the material ensures safe operation in domestic conditions.
  • Low degree of thermal conductivity. This is a significant plus, since passing through the pipes hot water doesn't cool down.
  • Plastic has high resistance to temperature changes and pressure changes.
  • They are lightweight, which greatly simplifies the installation process. You don't need them to connect them. welding work. They are connected using special parts. The connections are ultimately reliable and sealed.
  • Plastic products do not require maintenance in terms of corrosion protection. There is no need to paint them. Suitable for both open use, and for closed.

Selection of wall thickness

One of the important parameters for reliable operation sewer pipes is their thickness. As water passes through the drain, it exerts internal pressure on the walls. Therefore, the thickness must be such that the walls can withstand the pressure exerted on them. But it should be noted that when drainage sewer water flows by gravity, high pressure it does not appear on the walls, which means that significant thickness is not required.

Basically, the wall thickness of external sewer pipes is determined by their diameter. Traditionally, the thickness of pipes with a diameter of 110 mm is 3 mm. If the diametrical cross-section is 150 - 160 mm, then their thickness is about 3.9 mm. Functionally, this thickness has a large practical significance. For example, if the meter is 3 mm steel pipe with a diameter of 110 mm weighs 1 kg, then a thickness of 3.9 mm with a diameter of 160 mm will already weigh about 2 kg.

Concerning plastic materials, then the dependence of the thickness and diameter parameters is preserved. The manufacturing process of PVC pipes is not complicated and, if necessary, you can change the thickness of the pipes during production.

Technical characteristics of 110 mm pipe

The main components of the diametrical section are as follows:

  • Internal diametrical section. This parameter is fundamental. It is according to this that all connecting elements are selected. At the sewer plastic pipes 110 mm inner diameter is 103.6 mm.
  • The nominal diameter determines the nominal value of the internal diametral section.
  • Outer diameter section.
  • Pipe wall thickness.

One of the main parameters is the diametrical cross-section. It is by these indicators that the scope of application is determined. plastic products. Pipes with a diameter of 110 mm are mainly used for the construction of sewage drains.

Decide on the choice of a pipe with a diameter of 110 mm and according to it technical specifications The table below will help you decide.

How to install a 110 mm pipe

The laying of sewer pipes is determined according to a certain technology. Compliance with it ensures high-quality functioning of the sewerage system. During installation, certain features should be observed and certain nuances taken into account.

Slope of the sewer system

One of the most important parameters is the slope of the sewer pipes. The drainage water should flow away easily and without any obstruction. The natural process of drainage requires the construction of some slope. According to the standard, the slope is 1 cm per 1 m of pipe. To arrange the slope, markings are first made, and then fasteners are installed in accordance with the markings. The marking is done using a level, preferably a laser. First, mark a horizontal line that runs level with the drain hole on the riser. Then it rises by a number that corresponds to the distance from the riser to the original drain point.

Connection process

An important and directly main factor in the quality arrangement of a sewer system is pipe connections. The process itself is simple, but there are some nuances that ensure the reliability and tightness of the joints. Negligence in this matter can lead to the following negative factors:

  • leaks;
  • unpleasant smell.

In order to prevent the defects listed above when connecting 110 mm pipes, sealing gaskets are used, which are available in several types: single-feather, double-feather and double-feather with a plastic ring. The installation of these gaskets is carried out with some differences, which should also be taken into account. For example, single-feather gaskets are usually installed, but when installing others, it is necessary to use a special lubricant. So, in order to correctly connect 110 mm sewer pipes:

  1. Insert the gasket into the socket. We make sure that distortions do not form. Also, you should first inspect the gasket so that it does not have any defects.
  2. As a lubricant, you can use available products: detergent, soap, Vaseline. The main thing is that these products do not negatively affect rubber gaskets and do not change their structure. It is difficult to predict this, so experts recommend using a specialized lubricant that is made on a silicone basis. Silicone itself cannot be used, as it is aggressive to rubber.
  3. After the seals are installed, all that remains is to connect the products together. During the work, we make sure that the joints are tight.

Sequence of connections

Let us clarify that 100 mm pipes are connected not only to each other. In arranging a sewer system, various fittings are used that allow turning or other bending if necessary. Here is an example of the sequence of connections of the sewer system:

  • The drainage system begins with a turning fitting, to which a flexible corrugated hose is connected from the inside, and from outer pipe 110 mm. Many people don't use this element. Then in this case the tightness of this connection cannot be guaranteed.
  • Don’t forget, when connecting the product to the fitting, a rubber gasket must be installed. We also monitor the planting depth.
  • If it is necessary to arrange a branching sewer system, tee fittings are used. To change the diametrical cross-section in the sewer system, adapter fittings should be purchased.
  • The last rule in the connection. All joints must be placed along the flow of water.

Rules for working with plastic pipes

Despite the apparent simplicity of assembling a sewer system made of plastic materials, there are some nuances that should be taken into account when working. First of all, prepare the tools:

  • Hacksaw or pipe cutter.
  • Bulgarian.
  • Sandpaper for cleaning.
  • Lubricant and glue for plastic pipes.

Rules for processing plastic pipes in case of cutting them:

  • After cutting the pipe into two parts, it is necessary to ensure that there is a chamfer on the cut for ease of connection.
  • The sections are lightly processed with a grinder and cleaned with sandpaper.
  • After this, the elements are cleaned of dust, and the ends are treated with a degreaser.
  • After the rubber gaskets are installed, apply a thin layer of glue to the end and insert it tightly into the fitting. For reliability when connecting, the elements can be turned a quarter turn.

When installing a sewer drain, it is necessary to carry out the work in such a way as not to return to this procedure for at least ten years. And this is quite possible if you adhere to all the tips and rules given above. Proper pipe laying is the key to the long-term functioning of the sewer system.

Until now, not all users understand the difference between the designations of pipe diameters.

  1. D is the outer diameter of the pipe. This size is required for selecting sockets, couplings, corners, threaded connections and other installation and connecting water supply fittings. It is this that is indicated on the labeling; it will help you to focus on it when compiling a list of elements of the sewer system.
  2. d – internal diameter of the pipe. The dimensions of internal automatic and semi-automatic shut-off valves are tied to it, and the speed of fluid flow is calculated. The wall thickness of sewer pipes is determined by the difference between the external and internal diameters. The internal diameter can be calculated using the formula d = D - 2S. S—wall thickness.
  3. D y – conditional pass. The value is used mainly by specialists; for ordinary consumers this parameter is not decisive; many have not heard of it at all.

Systems household use for the supply of water, heat and sewage disposal, in most cases they are mounted on the basis of plastic pipes. Polypropylene pipes are considered the most common and universal. For correct installation pipeline and its operation, you need to know what diameter plastic pipes are and what they are intended for.

Purpose and characteristics of plastic pipes

To designate polypropylene pipe products in the international format, two letters are used - PP. This material is produced chemical industry, thermoplastic polymers are used for its manufacture.

The specified pipe products are produced according to a certain standard, which regulates the sizes of plastic pipes and their characteristics.


As an example, here are some data and their corresponding standards:

  • The density of the material according to GOST 15139 is 0.9 g/cm 3 .
  • The melting point, determined by GOST 21553, reaches 149 0 C.
  • The elongation of the material upon reaching the yield strength in accordance with GOST 11262 is about 50%.
  • Tensile strength is regulated by GOST 11262, and can have a value of 34-35 N/mm 2.
  • The linear expansion coefficient according to GOST 15173 is 0.15 mm/m 0 C.

Pipe diameter

Most important characteristic is the diameter of plastic pipes. The following types of this parameter are distinguished:

  • Outer diameter section.
  • Internal diametrical section.

Internal and external section of polypropylene pipe

Communication systems for water supply, heating and internal sewerage are laid using small-diameter plastic pipes. In this case, the minimum value can be 16 mm, and the maximum - 50 mm.

Pipe products with large diameters are used when laying pipelines supplying drinking water and discharging sewage in the housing and communal services sector.

Types of polypropylene pipes depending on the scope of use

Polypropylene pipes are produced in only three names: PN10, PN20, PN25. However, they are enough to completely replace technologically outdated metal analogues.

Despite the thinness of the PN10 pipe, its service life is about half a century. The main application is cold water supply and heating systems, including underfloor heating systems (read: " "). PVC pipes small diameter can also be used in the construction of storm and sewerage systems. The external diameter ranges from 20 to 110 millimeters, the internal diameter ranges from 16 to 90 millimeters.


A pipe marked PN20 can function flawlessly for 25 years. Due to the larger wall thickness, about 18.4 mm, the product can have external parameters similar to PN10, but at the same time have a smaller internal diameter. This makes it possible to use these tubular products in systems with internal operating pressure up to 2 MPa. PN20 pipes are quite suitable for installing full-fledged heating systems. This became possible due to the resistance of the products to high temperatures, up to 90 0 C. For comparison, we can say that a PN10 pipe can function normally at a temperature of no more than 45 0 C.


In the manufacture of PN25 pipes, additional reinforcement of the products with aluminum film or fiberglass is used. The operating period largely depends on pressure and temperature working environment.


The following indicators are considered the main characteristics of pipe products of this type:

  • Carrier pressure no more than 2.5 MPa.
  • The outer diameter ranges from 21 to 80 millimeters.
  • The internal cross-section ranges from 13 to 50 millimeters.
  • Wall thickness can vary from 4 to 13.4 millimeters.

The price of a plastic pipe is determined by the listed characteristics.

Pros and cons of polyethylene pipes

On the positive side, new generation pipes are characterized by the following properties:

  • Compliance with environmental regulations.
  • Long service life, about half a century.
  • Resistance to freezing of the working environment and its further thawing. This property is explained by the ability polypropylene pipes expand and return to its original shape without deforming the shell.
  • Fast and convenient assembly of the communication system.
  • Resistance to aggressive chemicals.
  • Resistance to the occurrence of corrosive processes, as well as to the formation of blockages (subject to the pipe laying rules).
  • Low price.



A disadvantage of pipes is a negative attitude towards sudden temperature changes. In addition, such products are not recommended for use in rooms with high degree fire hazard.

The diameter or cross-section of a plastic pipe for laying water supply, heating and sewerage systems has great importance. This parameter indicates the pipeline capacity that provides the most efficient operation.

Plastic pipeline with a diameter of 5 cm

Construction and repair work is not complete without installing or replacing a sewer system. Iron and cast iron sections are gradually becoming a thing of the past. They are heavy, susceptible to corrosion and have a high price. Their use makes sense only at those facilities that experience high operational load.

To create internal sewer systems in residential buildings, government and commercial organizations, shopping, entertainment and sports centers, plastic pipes of 50 mm diameter are used. These products have excellent characteristics and weight positive qualities. Their use allows for plumbing work quickly and efficiently.

Advantages of 50 mm PVC sewer pipes

Plastic products have a wide range of applications due to their many advantages.

These include:

  1. Ease. The weight of 50 mm polyvinyl chloride pipes is quite small. They are tens of times lighter than similar metal products. This makes them easy to transport, carry and install.
  2. Affordable price. The mass production of this product has led to the fact that prices for 50 mm PVC pipes for sewerage have become purely symbolic.
  3. Ecological cleanliness. According to the plastic pipe certificate DU 50, these products can be used in residential premises, hospitals, kitchens and kindergartens. Plastic does not pose any danger to human health.
  4. Corrosion resistance. PVC pipe TV 50 for sewerage is not susceptible to rotting and mold.
  5. Durability. The service life declared by the manufacturers of PVC drainage pipes with a diameter of 50 mm is at least 50 years.
  6. Presentable appearance. PVC 50 sewer pipelines have a smooth, shiny surface that does not require painting.
  7. Smooth inner surface. Food residues do not linger on it and deposits do not form.
  8. Possibility of installation both indoors and outdoors. Plastic pipes diameter 50 has a wide temperature Range operation.
  9. Simplicity and high speed installation The sections are connected using sockets equipped with a rubber gasket.
  10. Low thermal conductivity. Thanks to this, condensation does not form on the pipeline.
  11. Good sound insulation properties. This quality helps to significantly reduce the noise of water running along the main line.
  12. A large assortment of different fittings for the construction of structures of any complexity. Corrugated PVC a 50 mm pipe allows you to install sewerage in the most difficult conditions.

You can purchase 50 mm PVC pipes at any hardware store.

Application area

Application of plastic pipelines

Due to their many advantages and varied sizes, 50 mm plastic sewer pipes have a fairly wide range of applications.

According to the method of use, they are divided into the following categories:

  1. For the construction of an internal sewer system.
  2. For the installation of external sewage systems.
  3. To create a rainwater drainage system.
  4. For the installation of water pressure systems.

Based on their purpose, the walls of the products have different thicknesses and materials of manufacture. The most durable are those produced for pressure systems. 50 mm plastic pipes for internal lines have the least strength, as they do not experience strong impact. They are used to divert Wastewater from kitchen sinks, washbasins and bathtubs. But even they are strong enough to withstand swipe or bend.

On a note: For ease of use, fragments for arranging the external drain are painted bright Orange color. This draws attention to them, which helps prevent destruction of the drain system.

Internal systems can be assembled from white, black and gray material. The most practical is gray plastic. Dust and scratches are practically invisible on its surface.

For ease of use, the following elements are used when assembling sewer systems:

  • tees for creating a branched highway;
  • adapters for inserting 50 mm plastic pipes into 110 mm risers;
  • couplings for connecting identical fragments;
  • angles for making highway turns;
  • stubs.

Fittings are more durable than pipeline products. To ensure insulation, special glue and sealant can be used. Considering that rubber gaskets quickly fail, you can purchase a set of spare gaskets.

Characteristics of sewer pipes with a diameter of 50 mm

When designing a sewer system, you need to rely on the properties of the material that will be used. This will help avoid mistakes and subsequent rework.

Main indicators and dimensions sewer PVC 50 mm pipes are as follows:

  • outer diameter - 50 mm;
  • internal diameter - 45 mm;
  • wall thickness - 22 mm;
  • manufacturing material - polyvinyl chloride, which does not support combustion;
  • length of one section - 25, 50, 75, 100, 150, 200 and 300 cm;
  • operating temperature - from - 40° C to + 90° C;
  • impact strength - 2.2 kg/1 running meter;
  • connection method - socket.

The assembly of sewer systems is carried out by joining parts in sockets or using fittings. Cutting of workpieces is carried out with a hacksaw for metal. Fastening to the surface is carried out using clamps. The walls of the pipes are quite strong.

Important detail: The technical characteristics of the 50 mm PVC sewer pipe allow it to be filled liquid concrete. This can be used for laying various communications in walls and horizontal slabs.

Features of the operation of plastic pipelines

PVC sewer pipes 50 mm do not require the creation of greenhouse conditions for transportation, storage and operation.

When working with these products, you must adhere to several rules:

  1. Do not use them for the construction of fire water pipelines.
  2. Only saw workpieces hand tools. The grinder can greatly melt their edges. After cutting, the edges of the cut are thoroughly cleaned of burrs.
  3. To avoid bending, products should be stored horizontally.
  4. It will be easier to join the fragments if the rubber gaskets are lubricated with Vaseline or silicone.

Assembling a sewer system is quite simple matter, which is accessible even to a beginner.

Video about joining sewer pipelines of different sizes

PVC sewer pipes have been replaced metal products. Pipes are needed in different sections of the sewer system different sizes. Suitable choice can be done by knowing the throughput and characteristics of the sewer pipeline.

Peculiarities

Pipe structures made of polyvinyl chloride are often used to equip wastewater drains, displacing cast iron and steel ones. Plastic sewer pipes are made from regular and unplasticized PVC. The material contains vinyl chloride and additional additives. High strength properties make it possible to use unplasticized PVC for organizing pressure pipelines.

Sewage pipes are designed to drain wastewater from a water drain, for the installation of a drainage channel, installation of intra-house and street sewerage. The use of PVC products for sewerage installations is justified due to the technical characteristics of the material. The long service life of sewer pipelines will allow the system to operate for up to 50 years. The tensile strength reaches 50 MPa, therefore street area The sewer system will withstand installation to the depth of soil freezing. The pipeline is capable of operating at pressures from 6 to 16 bar.

The use of polyvinyl chloride pipes for sewerage has the following advantages:

  • A variety of sizes and shapes of pipes and fittings will allow you to assemble sewer systems of any complexity.
  • Smooth internal walls do not allow sewage to settle, preventing the formation of blockages in small diameters and preventing the pipe passage from becoming clogged with sediment.
  • The low weight of the products and ease of cutting mean quick and easy installation and dismantling without additional tools.
  • Inertia towards chemicals and corrosive effects.
  • Affordable price of pipeline elements.

Operating temperature range from -10 to +65 degrees. At -18 degrees, polyvinyl chloride becomes brittle. The material is resistant to softening during short-term heating to +90 degrees.

Dimensions

Plastic sewer pipe elements are produced in accordance with GOST 51613-2000. The dimensions of PVC pipes are determined by such indicators as length, outside diameter, internal diameter of the socket, bore diameter, wall thickness. The outer diameter assumes the nominal size of the product. The throughput depends on the bore diameter.

The wall thickness determines the strength of the pipeline and what load the pipe structure can withstand.

They are classified according to strength class:

  • lightweight SN2 structures with a wall thickness of less than 2.3 mm can withstand loads of up to 630 Pa;
  • medium-heavy SN4 with walls from 2.5 to 12.3 mm depending on the diameter, cope with pressure from 600 to 800 Pa;
  • heavy SN8 pipes with wall thicknesses from 3.2 to 15.3 mm, varying in diameter, withstand pressures from 800 to 1000 Pa.

The sewer pipeline, capable of withstanding pressure up to 1.6 MPa, is made of unplasticized PVC with a wall thickness of 0.5 to 1.9 cm. It is used for laying to great depths, under highways, in pressure sewer systems.

Sewer pipes are divided depending on the installation location. External and internal are distinguished waste system. Pipes are used to install internal sewerage gray. Standard sizes diameters are 32, 40, 50, 75, 110 and 160 mm. The wall thickness is not designed for high loads, varies from 1 to 3.2 mm. The length can be 0.3, 0.5, 1, 1.5, 2 and 3 meters.

Pipes for external drainage are different orange. Depending on the amount of wastewater, diameters of 110, 125, 160, 200, 250, 300, 400 and 500 mm are produced. The wall size starts from 3 mm, the length varies from 1.2 to 3 m. For the arrangement of urban sewer systems, a diameter of 200 mm is used.

Depending on the pressure to which the walls of the pipeline are exposed, pressure and non-pressure are distinguished. sewer system. For internal gravity sewerage, pipes with a wall thickness of 1.8 to 3 mm are used. For street pipelines with free-flow drainage, products are produced with a wall size from 3.2 mm with a diameter of 11 cm to 1.2 cm with outer diameter 50 cm.

Pressure sewer system with pumping equipment requires increased strength characteristics. Plastic pressure pipes are made from unplasticized PVC with a greater thickness. The table shows possible wall parameters depending on the pressure tested from 800 Pa to 1.6 MPa.

In addition to smooth-walled PVC pipeline, corrugated pipe is produced. It is distinguished by increased rigidity and different diameters. Gray corrugation of small diameter, used to drain waste from washing, drying, dishwasher. Double-layer corrugated pipe structures large diameter from 11 to 120 cm are used for laying to a depth of up to 15 m with high mechanical impact. The table shows the dimensional form of corrugated pipes.

Outer diameter, mm

Inner diameter, mm

Corrugation protrusion pitch, mm

Inner side corrugated pipe It is manufactured with a smooth wall to prevent the accumulation of solid particles, and the outer surface is embossed. They are used for arranging sewer systems in multi-storey housing construction, industrial production, social and public facilities.

How to choose?

When selecting optimal size For PVC sewer pipes, the main parameter is calculated - the expected volume of wastewater that passes through the pipeline. In a private household, the amount of liquid drained depends on the number of people living. The more drainage points there are in the house, the wider the receiving drain pipe. External sewerage cannot be less than 11 cm in diameter. For internal wiring in an apartment, it is enough to choose sewer pipes with a small diameter of up to 7.5 cm. When discharging wastewater into a riser, the size of the circle should not be less than the diameter of the common main. For buildings with five floors and below, this figure is 11 cm; if there are more floors, then the diameter reaches 16–20 cm.

Use common sense to select the optimal size of pipes at various drain points. You should not install a bulky sewer network with high throughput in low-rise buildings and apartments. Efficiency will increase slightly, but the cost and location area will increase significantly.

Sewage pipes are selected according to the following criteria:

  • by diameter;
  • by wall thickness;
  • along the length of the free end.

The internal cross-sectional size or diameter determines the discharge load into the sewer system. Each sewage discharge point requires the use of a diameter of up to 50 mm. The drain hole under the toilet has a diameter of at least 10 cm, since solid particles go down the drain. In a private house, a pipe with a diameter of 110–200 mm is suitable for installing an external sewer system. For sewerage coming from multi-storey building, the cross-sectional diameter must be more than 20 cm. The size of the outlet to the sewer well in the yard can be 30–50 cm.

The thickness of the walls determines the strength class of the structure. The thickness must be selected according to the expected load on the pipeline. Lightweight pipes with walls of 1.2–2.2 mm are suitable for installation in systems with gravity drainage with minimal load in the internal sewer system. Typically, the diameter of such pipes does not exceed 11 cm. They can be installed to drain sewage from the kitchen and bathroom in apartments and private houses. Pipes must be freely accessible or covered with a box.

Pipes with strength class SN4 are the most common and are used for internal and external sewerage. Minimum diameter for pipes 5 cm with walls 2.6 mm. For a diameter of 11 cm, the thickness is 3.2 mm. Medium-heavy pipes are installed for the common house riser and outlet to the external drain. Such pipes are also used in external gravity sewerage in private and multi-apartment construction.

For a pressure sewer system, heavy pipes of class SN8 and higher are used. To accurately determine the wall thickness, you need to familiarize yourself with the power of the pump and what pressure it exerts on the system. The minimum wall thickness with a diameter of 9 cm is 3 mm, the maximum is 6.6 mm.

The selection of pipe length depends on the length of the pipeline in different sections. The smallest section for internal sewerage is 30 cm. The length can be easily changed independently depending on the configuration of the pipeline. To get a smooth cut of the required length, all you need to do is use a hacksaw. For external sewerage with straight sections, pipes with a length of 1.5 to 3 m are often used. The fewer connecting elements in the installation section, the stronger and more rigid the pipeline structure.

When choosing the size of sewer pipes, you can be guided by sanitary standards, which indicate the permissible diameter for various drains:

  • Kitchen drain – 32–50 mm.
  • The drainage from the bathroom from each point is 50 mm.
  • Drain from washing equipment – ​​25 mm.
  • Pipe supply to the riser – 50–75 mm.
  • Fecal drainage – 110 mm.
  • Central riser – 110–160 mm.
  • Output to external drain – 110–160 mm.
  • External drain with outlet from the bath – 160–200 mm.
  • With outlet from the pool – 20–30 cm.
  • City sewer lines – 30–50 cm.

PVC pipes are widely used to create sewer systems due to their ease of installation and operational characteristics. A sewer system can be assembled from modules of different sizes. The size range includes shaped products for transition to different diameter pipes (reducers), splitters and corner bends. The interchangeability of pipe elements allows renovation work in a short time.

Unlike other plastic analogues, products made from polyvinyl chloride have a convenient assembly mechanism. All components and fittings in the pipeline have a socket connection with o-ring. Additionally, you can coat it with glue or sealant for strength. If it is necessary to connect two sections of pipe, use a coupling equipped with rubber seals. All adapters for plumbing outlets from sinks, sinks, showers and bathtubs are equipped with a socket groove.

In addition to the socket connection, an adhesive joining method is used. Pipes differ in the shape of the end and the size of the walls. When selecting pipe products of a certain size, all fittings must be of the same diameter. This will help achieve tightness in the pipeline.

When installing sewer pipes, the angle of inclination for the gravity drainage system must be observed. If pipes with a diameter of 32–50 mm, then optimal inclination will be 0.03 degrees or 3 cm per linear meter. A circle size of up to 110 mm assumes a slope of 0.02 degrees or 2 cm. A diameter from 150 to 200 mm should be laid at an angle of 0.008 degrees, corresponding to less than 1 cm.

In the next video you will see the installation of plastic sewer pipes.