What is the diameter of the sewer pipes? The diameter of the sewer pipes. Main indicators and their ratios External sewerage pipe diameter

Not a single full-fledged residential building will be considered as such if it is not provided with high-quality sewage.

Sewerage is a necessary system that significantly improves the quality of our life. It is difficult to imagine a modern house not equipped with such amenities. Although, unfortunately, there are enough such buildings in areas remote from cities.

Nevertheless, sewers can also be designed with your own hands, if no other options for connecting it are foreseen. For construction, you will need to purchase sewer pipes, connecting them into a single working system.

What sewer pipes are there, what are their sizes and how do they differ? Now you will know.

Article content

Features and types

Sewer pipes are somewhat different from water pipes. Which, however, is quite obvious.

Plumbing is needed when a water supply system is to be laid that supplies clean water to the end user. Sewer pipes perform a different role. They remove drains, drain water and human waste.

Unlike pure water, waste can come in many different shapes and sizes. Consequently, the diameter of the sewer pipes, in order to avoid their premature clogging, increases significantly.

The material from which pipes for the sewerage of a private house are made must meet the requirements of stability, durability, strength and zero interaction with corrosion.

To choose the right sewer pipes, you need to pay attention to them:

1. Dimensions.
2. Execution material.

These three points are extremely important and are evaluated in the first place.

Line dimensions

The construction of a sewerage system in a private house begins with the selection of pipes, or rather, with the selection of their diameters. The diameters of sewer pipes vary greatly from each other. There are models of both a small sample, 32, 50, 75 mm, and a medium one from 100-110 mm to 160-200 mm.

It should be understood that the diameter of the sewer pipe clearly meets the requirements for it. Sizes are not universal. This is the difference between the 32 mm and 75 mm lines in the water supply system solely in the throughput of the line. The diameter of the sewer pipes has a much greater impact on the system.

Take, for example, samples whose dimensions are kept in the range from 32 to 75 mm. These products are usually used when it is necessary to lay an internal sewerage system. For example, models with a diameter of 32 mm are perfect for connecting the waste outlet from a small washbasin in the bathroom. Pipes up to 75 mm are a larger option, they can already be connected to a bathtub, a washbasin in the kitchen, etc.

Problems begin when the wrong requirements are imposed on the wiring in a private house. For example, they try to put 32-75 mm pipes where they don't belong.

The smaller the sewer billet in diameter, the smaller its overall dimensions, which means the greater the chance of clogging. In the washbasin, where the lion's share of the waste is ordinary water, the use of such lines is not critical. But to organize the removal of the same toilet bowl from pipes, the total dimensions of which in the cross section are less than 75 mm, is at least unreasonable.

Lines of large diameter

The same applies to products whose dimensions are not limited to two-digit numbers. Pipes with diameters of 100-110 mm and up to 160 mm are considered combined. They can be placed without fear in the internal wiring of the sewerage system of a private house anywhere. A pipe 100-110 mm in diameter is perfectly protected and will not cause you problems inside the house.

Sometimes products with diameters of 100-160 mm are even used to equip interfloor risers. However, one must be careful here. The riser collects waste from impressive volumes of house wiring. It is one thing to lay a line with a diameter of 100 to 160 mm on, for example, a common sewer branch connected to a bathroom and a washbasin at the same time.

And it’s completely different when several more bathrooms are added to the load. For safety reasons, for risers in a private house, it is recommended to buy pipes with a diameter of 160 mm or more. And it’s better to forget about risers from segments with a diameter of 100-110 mm.

Pipes larger than 160 mm in diameter are usually too expensive and bulky to be conveniently used indoors. However, they do an excellent job as an outdoor sewer. Moreover, only lines with a diameter above 160 mm in the external sewer are used. And the main pipelines are completely equipped with systems with cross-sectional dimensions from 250 mm and above.

Note that such recommendations relate more to wiring in a private house or an apartment building. At industrial enterprises, pipes of 32-75 mm in diameter are almost never used, and systems with dimensions of 100-110 mm and above are considered the most popular there.

Material

Modern sewer pipes are mainly produced from polymer substitutes. Gone is the era of cast iron and concrete, although the outdoor in our area is still quite common.

The most popular solutions for creating:

• polyethylene;
• polyvinyl chloride.

Both the first and second options have a lot of their advantages. Polyethylene products differ due to their greater strength. Their sizes, as a rule, only start from the level of 100-110 mm, therefore, mainly polyethylene products are produced for.

Polyethylene perfectly withstands external physical pressure, is not afraid of temperature changes or external influence of irritants, which makes it perhaps the most attractive material in terms of engineering ability.

At the same time, the cost of polyethylene is not that too high. Polyethylene sewerage is several times cheaper or cast iron.

- no less popular option. Polyvinyl chloride or PVC is not as durable as HDPE. It is more like plastic in our traditional sense. Nevertheless, PVC does an excellent job of laying the internal sewerage of a private house.

Manufacturers have reached an agreement that makes it possible to distinguish between two main directions in which sewage installation is carried out. They paint materials for internal sewage with diameters up to 110 mm gray, and products intended for laying external sewers with a diameter of 160 mm or more are painted orange or light brown.

Replacing the sewer riser (video)

Installation technology

Installing sewer pipes is a serious matter. There are many additional factors to consider here. In addition to the diameter, the internal wiring of the sewer, the external wiring, the connection scheme of both systems, the method of connecting the segments, the presence of risers, etc. are taken into account.

Installation always starts with planning. First select the material and diameter. We have already talked about them above. Internal sewerage is designed from pipes with a diameter of up to 110 mm.

The size is selected so that the line does not become clogged during operation. If it is necessary to assemble several bathrooms into one pipe, then its diameter is artificially increased. It is advisable to withstand sufficient, since in most cases the sewer is made free-flowing, that is, the waste in it is removed by gravity.

The pipes themselves are connected mainly in the socket. Socket connections are convenient for their practicality and ease of handling. The segments are simply connected to each other with the correct ends, rotated several times clockwise, and then the butt parts are sealed with sealant.

The last steps are not strictly necessary. Very often, a socket connection, without additional processing, provides the proper level of tightness.

The sewer system of an apartment or a country house is a complex structure, during which you should follow the rules and recommendations of professionals. Otherwise, you can face very unpleasant consequences.

For the arrangement of the sewer system, pipes of different sizes and diameters are required. Today, two types of pipes are popular:

• Plastic sewer pipes - light, comfortable, characterized by a long service life, good performance properties.
• Cast iron pipes - are used for arranging sewer systems much less frequently than plastic ones because of their heaviness and high cost.

The choice of pipes for sewerage is an important and responsible task. The service life of the system depends on their quality. If you make a mistake at this stage, leaks, blockages and other troubles may occur during operation. It is important not only to choose the material from which the pipeline will be made, the fittings for the connection, but you should also accurately calculate the dimensions of the pipes.

Note! The dimensions by which sewer pipes must be manufactured are regulated by the provisions assigned in SPiP.

When arranging or overhauling the sewer system of a country house or apartment, a project is first drawn up, materials and tools for installing the pipeline are selected. The main set of works can be started only after pipes, fittings and other parts have been purchased and prepared.

It is not so easy to choose the right sewer pipes. Particular attention should be paid to the diameter of the sewer pipes, as well as to the indicators of weight and length. Also, when designing a sewer system, the following indicators should be calculated:

• The angle of the slope, ensuring the correct, uninterrupted operation of the sewerage system, timely and fast transportation of wastewater to the cesspool.
• Number of connections and turns.
• Options for connecting sewer pipes to each other, with a sewer riser, with plumbing fixtures.

Today, a wide range is presented on the market, which differ not only in size, but also in the scope of use, technical characteristics, and material of manufacture. The correct choice of elements for the pipeline is the key to a reliable and long-term functioning of the sewer system, respectively, the owners will not have trouble during operation.

Diameter

The question of what diameter of sewer pipes to use is one of the most important. There are several indicators for determining the diameter of sewer pipes:

• The inner diameter of sewer pipes is one of the most important indicators. It is the main criterion for classification. It is important not only when choosing pipes, but also other elements of the pipeline (tees, couplings);
• The outer diameter directly depends on the inner diameter (always larger);
• The nominal diameter serves as a criterion for marking pipes in production;
• Nominal diameter;
• Wall thickness.

If, when choosing, you gave preference to cast iron products, please note that their inner diameter decreases over time. The rough surface of the walls contributes to the retention and accumulation of fatty deposits and sewage.

If all indicators are not indicated on the pipe, they can be subtracted from those available using special formulas. The diameter of the external sewer pipe, as a rule, exceeds the diameter of the elements of the internal pipeline. The SNiP has information on what the minimum allowable dimensions for arranging a sewerage system in an apartment or a country house may be.

Note! Often, pipe parameters are indicated in inches, which is not very convenient, especially if the work is done by a non-professional. There are special tables with which you can easily convert inches to millimeters. If there is no table at hand, you can convert the inch size to metric by multiplying it by 2.54.

Weight and length

When choosing pipeline elements, the weight of the sewer pipes is also important. Modern technologies make it possible to produce not only durable, but also very light materials that are easy to handle during installation. These are plastic products presented in three versions: polypropylene, polyethylene and polyvinyl chloride. As for cast iron products, they are too heavy; when working with them, one cannot do without the use of special equipment.

Their cost depends on the weight of the pipes, because the heavier the product, the more material it took to manufacture it. The weight is determined by the length of the pipe, the ratio of the outer and inner diameters.

When arranging the sewer system, one should not neglect such an indicator as length. The larger it is, the fewer connections will have to be made. Normally, the length of the pipes varies from one to six meters. If necessary, the products can be cut with a hacksaw for metal. Cast iron pipes are adjusted to size using a grinder.

The ratio of diameter and other parameters

Weight, length, wall thickness, diameter - indicators that are mutually dependent. The purpose and scope of sewer pipes depends on them. For the arrangement of the internal pipeline and the construction of external sewage, products of different sizes are used. By choosing them correctly, you can protect yourself from breakdowns and troubles that may arise during the operation of the system.

The dependence of the main indicators of sewer pipes on the diameter is determined by the following rules:

• For pipes with a diameter of 160 mm, which are used for arranging external sewage, the wall thickness is 3.9 mm. Pipes with a diameter of 110 mm are much lighter, their wall thickness is 3 mm;
• Large pipes (160 mm in diameter) weigh about two kilograms per linear meter, while products with a diameter of 110 mm weigh only a kilogram.

The dependence of diameter, weight and other indicators will be different if cast iron or plastic pipes are used.

The sewer system consists of pipes of different diameters. To choose the right pipes for the pipeline, you should pay attention to all the markings on the surface of the products. There, as a rule, two indicators are indicated: wall thickness and outer diameter.

Pipe sizing

On the market or in a plumbing supermarket, there is a wide selection of products that belong to the sewer pipe category. Dimensions are determined by the needs of the owner. Different products are used for arranging external, internal pipelines, connecting plumbing fixtures to the system.

If you do not have professional skills and special knowledge, in order to choose the right sewer pipes, follow the recommendations specified in SNiP. During operation, the pipe should not clog, leak.

To connect the toilet, bathtub and kitchen sink, pipes of different diameters are used. This is due to the fact that plumbing fixtures accept and release different types of sewage and work differently.

• To connect a toilet bowl to the system, you will need a pipe whose diameter exceeds 100 mm. This is due to the fact that it becomes necessary to pass a lot of water in a short period of time, as well as to transport solid waste of various sizes (fecal matter, toilet paper).
• A pipe with a diameter of 50 mm is suitable for connecting a bathtub and a sink. The fact is that the release of a plumbing fixture is small. Even if you install a large pipe, the water will not leave faster due to the outlet.

There are also pipes for connecting a shower stall, a washing machine and other appliances, but their diameter ranges from 25 to 50 mm.

Note! The diameters of sewer plastic pipes for the pipeline may be smaller than those of cast iron. Plastic products are distinguished by the fact that they have smooth inner walls that are unable to retain waste, and, accordingly, the throughput is better.

Diameter calculation

On products manufactured by manufacturers of sewer pipes, there are special markings by which their size is determined. First of all, it should be determined from what material the pipes will be used to equip the sewer system. Today you can buy a plastic pipe of almost any diameter. As for the length of the products, it can be easily adjusted with a hacksaw.

A value is applied to the plastic pipe, which determines the outer diameter of the product. Having this parameter and the wall thickness, you can easily calculate the inner diameter. The range of PVC sewer pipes includes a product line with a diameter of 25 mm to 200 mm. The length ranges from 1 to 6 meters, but it is not the main indicator, since the pipe can be cut. The most popular pipes with diameters of 110 mm.

As for cast iron products, their weight is much greater than plastic pipes. Cast iron pipes are shorter, they are produced in sizes from 1.5 to 3 m. The inner diameter of sewer pipes is indicated on the products, which can be in the range from 50 mm to 400 mm. It is possible to cut a cast-iron sewer pipe, but this is a rather time-consuming, sometimes dangerous process. Individual elements are connected using special fittings.

For the desired diameter calculation, the following formula is used:

• d- internal pipe diameter, mm;
• Q- heat flow, kW;
• v- coolant velocity, m/s;
• dT- temperature difference, deg.

Purpose of pipes of different diameters

Each pipe has its own purpose. The tables presented in SNiP allow you to calculate the required number of pipes for installing a sewer system. When choosing pipeline elements, the following data should be taken into account.

• A pipe with a diameter of 100 mm is used for arranging an internal pipeline when the usual number of plumbing fixtures for an apartment or a mansion (toilet, bathtub, shower, kitchen sink, washing machine) is connected to the sewerage system.
• A high-quality drain in sanitary facilities such as a bidet, a washbasin is provided by pipes whose diameter does not exceed 50 mm.
• For the installation of a sewer riser in a multi-storey building, pipes with a diameter of 150 mm are used.
• Exit to the cesspool, the combination of several risers is carried out using sewer pipes with a diameter of more than 200 mm.

Note! If a plastic pipe is used, its diameter may be slightly smaller than cast iron products. The patency of PVC pipes does not deteriorate during operation due to the accumulation of silt and grease inside.

Installation nuances

The construction of a sewer system is a rather complicated task. You can't do without professional advice. In order to correctly calculate the number and dimensions of pipeline elements, you should seek help in drawing up an estimate and a sewerage project from a specialist.

It is important to remember that it is impossible to make a transition from a large diameter pipe to a smaller diameter product. The junction will become a place for the formation of blockages, the occurrence of leaks, breakthroughs.

• When installing the pipeline, care should be taken to carry out revisions - these are holes that open if it becomes necessary to clean the pipes.
No one is immune from accidents in sewer systems. Therefore, each owner prefers to protect himself from such a scourge in his own way. For data...

If you are engaged in the construction of your house, or planned to carry out a major overhaul in your apartment, then you will have to face the need and, of course, the selection of materials. In addition, you need to draw up a project in order to calculate the correct number of pipes. The main parameter that you need to correctly determine is the diameter of the sewer pipe, the slope, the number of corners and the way the pipes are joined to each other.

You can start with what should be the diameter of the sewer pipe? By generally accepted standards, a pipe with a diameter of 100 millimeters is used in the toilet, into it, and in the bathroom from 40 to 50 mm.

Sewer pipe diameters

The difference in pipe diameters is due to the features of plumbing fixtures. So, for example, in a toilet bowl, a large amount of water with particles of different fractions is formed in one flush. In this case, you need to use a pipe with a diameter of 100 mm. As for the bathroom, a significant amount of water also accumulates in this plumbing fixture, but at the same time, the diameter of the sewer pipe is required to be smaller. What is the reason? In this case, you need to remember the rule: the patency of the sewer pipe is always equal to the narrowest point in its design. Thus, we should pay attention to the size of the drain hole and everything will become clear.

In the specialized literature, there are examples and methods for calculating the diameter of a sewer pipe. The calculation can be too complicated, because you need to take into account the angle of docking with the riser and a large number of other factors. In addition, using SNiPs, you can clean out the maximum permeability at a certain diameter. To put it simply, the diameter of the sewer pipe should be:

To install a sewer in a house or apartment, it is enough to use a pipe with a diameter of 100 mm for the toilet.

Example:

With standard wiring in the apartment, a riser with a diameter of 100 mm passes through the toilet, a tee with a socket of 100 mm for the toilet comes out of it, and a branch with a diameter of 50 mm for the rest of the plumbing points. For example, a washing machine, washbasin, bathtub or shower, kitchen sink, and dishwasher.

For a washbasin, bidet or urinal, as well as a sink in the kitchen, it is enough to use a 50 mm pipe;

Due to the gradual pollution of the main line, a 100 mm pipe is used for houses no more than five floors. In the case of multi-storey buildings, the pipe must have a diameter of at least 150 mm;

We select some sections located in a horizontal position, connecting several risers and going to the well with a diameter of 200 mm;

On the surface of plastic pipes, unlike cast iron, deposits do not form, so pipes with a diameter one step smaller can be used.

The whole variety of sewer pipes is not limited to the above values. On the market there are pipes with a diameter of 75, 90, 110, 160 and 300 mm. It is worth noting that it will be very difficult to pick up cuffs and fittings for such pipes, that it is best to refuse their use. Of course, there are exceptions where these pipes will become the only way out when organizing sewage.

The subtleties of sewerage

Starting the installation of a sewer pipe, you need to be able not only to choose the right diameter, but also take into account some of the nuances that allow you to create a high-quality and working system. So, in order for the sewer to fulfill its duties, it is necessary to take into account:

The sewer pipe, located horizontally, should not have a diameter larger than the riser into which water flows from it;

Horizontal connections are made using oblique tees. A right angle can only be used when docking with a riser;

In places where the sewer route turns, it is necessary to install windows for revision;

The sewer riser must be left open at the top so that air can freely enter the system;

The slope of a horizontally located pipe should be from 1 to 2 cm per meter;

If the slope is too large, then the water will create noise during the runoff, and the pipes will quickly become dirty, but if the slope is less than normal, then the water will not leave well;

It is impossible to allow the formation of counter-deviations. Sewerage is mounted so that the sockets are directed towards the water flow.

If you use the above tips, you will be able to correctly choose the diameter of the pipe for installing the sewer and in the future you will be able to use the system without problems.

One of the most important parameters that you should pay attention to when choosing pipes for a sewerage device is, in addition to the pipe material, the diameter of the sewer pipe, because pipes of different diameters are used for various internal sewerage systems. All sewer pipes are manufactured strictly in accordance with the Specifications. At the same time, manufacturers offer a huge selection of products of different sizes. Therefore, it is easy to choose exactly what is required for each specific case. How to do this - the article below will tell.

Influence of diameter on other pipe parameters

As we have already said, one of the main parameters of any pipe is its diameter. It defines the scope of its application:

1. to drain water from a free-standing bathtub or sink, use pipes with a diameter of no more than 75 mm;
2. pipes that drain waste from the toilet should already have a diameter of 100-110 mm;
3. sewer pipes of large diameters are used to divert all collected sewage out of the building.

The diameter of the sewer pipes determines their other parameters:

• Pipe wall thickness. For pipes of large diameter (up to 160 mm), the wall thickness is greater than for pipes with a diameter of up to 110 mm. It is respectively 3.9 and 3 mm.
• Pipe weight. 1 m of pipe with a diameter of 160 mm weighs about 2 kg, while a pipe with a diameter of 110 mm of the same length weighs just over 1 kg.

Inner and outer diameter

Usually, the factory marking indicates only the outer diameter of the sewer pipe and its thickness.

Pro tip: In order to determine the inner diameter of the purchased pipe, it is necessary to subtract twice the value of its thickness from the value of the outer diameter.

The inner diameter of the sewer pipe must be known in order not to make a mistake with the selection of pipes to perform certain tasks in the sewer system.

There is an approximate gradation of pipes used in certain cases for internal and external sewage:

• To drain water from a washing machine or dishwasher, pipes with a diameter of 25 mm are used.
• For drainage from a shower cabin, bathtub, sinks, pipes with a diameter of 32 mm are suitable.
• The general sewer wiring in the apartment is pipes with a diameter of up to 40-50 mm.
• To divert all drains to the outside, pipes of the largest diameter are used - from 160 to 200 mm.

Pipes made from various materials are usually used for different types of sewers. So for the device of external sewage, plastic pipes are often used, for example PVC sewer pipes: their diameter is most often 110 mm.

Cast iron pipes are marked, which indicates their nominal (actual) diameter. For example, the designation "DN 100" indicates that the diameter of the "conditional passage" of the pipe is 100 mm. Thus, in order to determine the nominal inner diameter of cast iron sewer pipes, it is enough to check their markings.

Smallest allowable diameters

According to the Sanitary Norms and Rules (SNiP), pipes can be used for various types of sewerage networks, the minimum size of which is:

• for the flow of industrial and domestic water within the quarter - 150 mm;
• for the same street networks - 200 mm;
• for a quarterly network that drains rainwater - 220 mm;
• for street storm network - 250 mm;
• for networks that output silt under pressure - 150 mm.

In some cases, minimum pipe sizes are allowed:

• for settlements, the volume of effluents in which does not exceed 300 cubic meters per day, both for street and quarterly networks that carry out the withdrawal of industrial water, it is possible to use pipes with a minimum diameter of 150 mm;
• for some production networks, if appropriate justification is provided, this diameter may be even smaller.

Determining the exact pipe diameter

Convert mm to inches

It is not very easy, at times, to determine the diameter of the required pipe, since it is often indicated not in millimeters, but in inches. To move from one unit to another, there are various tables that can be used.

The conversion table shown in the figure above is used if it is possible to measure the diameter (the pipe is not fixed) with a ruler or with a caliper.

Pro tip:

To measure the diameter of an existing (installed) pipe at home, you just need to attach a ruler to it and measure its “thickness”. If the resulting number is about 32 mm, then the bore diameter of the pipe is 1 inch; about 28 mm is already ¾ inch; 16 mm - ½ inch.

Calculation of the required pipe diameter

It is important to know the diameter of the pipes used in the installation of the system. The volume of liquid carrier passing through the pipes is directly related to their diameter. An accurate calculation of the diameter of the sewer pipes can be done independently.

The diameter is calculated by a simple formula:

where:

• V is the speed of movement of liquid masses through pipes. The indicator should not exceed the value of 0.7 / s. You can choose from the table below.

• h / d - indicator of the fullness of the pipeline. It is the ratio of the flow height h (maximum) to the inner diameter of the pipe. The minimum value should exceed 0.3, the maximum should not exceed 0.6.
• K is a coefficient depending on the material of the pipeline. So, for polymer products it is 0.5, for other materials - 0.6.

The most optimal version of the sewer system is easy to create if you adhere to the calculated pipe diameter. Drawing up a preliminary detailed design of the entire sewerage system in the house will allow you to determine the required number and size of pipes purchased for installing the system.

From this article, you can find out the features of such a communication element as a sewer drain pipe: its purpose, varieties of existing products that can be purchased in stores, their characteristics and prices. The text describes the specifics of drains and recommendations for installing a sewer riser, including instructions for dismantling the old pipeline.

Sewerage is one of the most important communication systems associated with housing water supply. For this reason, it is very important to pay special attention to the choice of components, their quality, in particular, drain pipes.

Drain pipes are used for the installation of a sewer communications system. Manufacturers offer a wide range of these products, differing from each other in material, functional characteristics and purpose.

Types of sewer pipes for internal sewage and external

Classification of existing drain pipes according to the material of manufacture:

• asbestos;
• copper;
• cast iron;
• plastic;
• reinforced concrete;
• steel;
• ceramic.

By purpose, all these products are divided into two categories. External pipes are laid outside the premises, while internal pipes are intended for the installation of water supply and sewerage in the room.

External sewerage systems are mounted outside the building or in the soil adjacent to it. Since their operation is carried out in outdoor conditions, such products must have improved properties:

• high strength;
• frost resistance;
• resistance to deformation changes;
• resistance to the influence of aggressive environments;
• resistance to high pressure on the walls.

Note! To organize an external drain system, it is better to take products made from materials with high corrosion resistance. These include painted metal, polymers and galvanized steel.

The most popular for internal sewage are pipes made of polymers. They have many advantages:

• affordable price;
• long service life;
• simple system of installation of internal sewerage;
• resistance to corrosion;
• low thermal conductivity;
• resistance to alkali and chemicals;
• a wide range of sizes and shapes;
• light weight;
• security.

Plastic sewerage: which pipes are better to use in the system

For the manufacture of plastic pipes, various polymeric substances are used. This product category includes elements made of polyethylene (corrugated and smooth), polypropylene and low pressure polyethylene. To determine which of them are most suitable for installing a sewer riser, you should familiarize yourself with the features of each type of pipe.

Features of plastic pipes:

The choice of pipes for sewerage: dimensions and prices of products

If a drain pipe is required in the bathroom, then the use of rigid or corrugated products made of polypropylene would be appropriate. The recommended pipe diameter in this case is 40 mm. The cost of such an element varies from 50 to 120 rubles. depending on length. If the room does not have free space, you can limit yourself to one knee. A large bathroom can accommodate two knees.

To organize a drain under the toilet, it is better to buy a PVC pipe for sewage, the price of corrugated products with a diameter of 110 mm is about 300 rubles. Due to the increased flexibility, the system can be adjusted to any toilet model and conveniently connected.

Helpful advice! Experts advise choosing pipes with thick walls. Such products will last longer before they wear out.

For arranging the drain from the sink into the sewer, corrugated products are most often used. It is allowed to use diameters of 40 mm, 32 mm, and in some cases this figure can reach 50 mm. It depends on the modification of the sink and siphon. The price of such products is in the range from 250 to 400 rubles.

System of standard sizes of internal diameter:

To connect the drain of the washing machine to the sewer, a special hose made of corrugated material is used, which is present as standard with this equipment. The connection is made through a siphon, and for these purposes, you can use the fork located under the sink.

HDPE drain pipes for sewerage: dimensions and price of outdoor products

They are also used to drain precipitation from the roof into the sewer. For these purposes, it is recommended to take products with rigid walls. The optimal material is polypropylene and HDPE. The diameter of the elements is selected taking into account the dimensions of the building.

The size of products for the removal of precipitation from the roof:

Most often, products with a diameter of 110, 160 and 200 mm are used in residential buildings. The wall thickness of such pipes is 3.2 mm.

The price of sewer pipes 160, 110 and 200 mm:

How to properly connect the washing machine to the sewer

Connecting the washing machine to the internal sewerage system and water supply can be done independently. This procedure should be approached responsibly, because the result depends on whether the equipment will work correctly and without interruption.

In itself, connecting the washing machine is not difficult. Difficulties arise during the organization of the drain. If the procedure is performed incorrectly, an unpleasant odor may appear in the room where the equipment is installed. In addition, there is a risk of contamination of the machine with water coming from other plumbing fixtures.

Helpful advice! For cutting metal elements of the pipeline, it is better to select a hacksaw with small teeth. Such a tool allows you to minimize the likelihood of chips. The smaller the teeth, the neater and smoother the cuts are.

Ways to organize a drain:

1. By installing a special siphon.
2. Through direct installation of the hose into the sewerage system.
3. Throwing the hose over the edge of the bathtub or washbasin.

The third way can be classified as temporary measures. In this case, you will not need to work with pipes and install a siphon, but further operation of the bathroom or sink will be accompanied by certain inconveniences. Waste water from the machine will leave traces of dirt on the floor. In addition, the method of fixing the hose is not very reliable, which is fraught with flooding. The hose break occurs during the spinning of the laundry due to strong vibration or when the pump is turned on to drain.

Features of the organization of the drain for the washing machine into the sewer

In the plumbing market, you can purchase special-purpose siphons for sinks, bathtubs and sinks. They have an additional branch for connecting a hose with a diameter of 22 mm. The process of connecting with a siphon is not complicated, in contrast to the organization of draining the washing machine directly into the sewer. The fact is that pipes with a diameter of 32 or 50 mm are used for the general sewerage system. However, there is no adapter that can combine them with a 22mm hose.

To connect in this case, you should use a rubber reduction with an adapter for a 22 mm hose. If it is located in the immediate vicinity of a common pipeline with a diameter of 50 mm, it can be cut into the system using a tee.

If the equipment is far away, a PVC pipe with a diameter of 32 mm can be laid between the hose and the outlet. To connect a PVC product to a common system, you will also need to use a rubber reduction. In this case, it will not be necessary to place the plastic pipe at an angle, since in this case the water is drained by force.

Note! For some washing machines, the drain hose may have different diameters at the ends. From the side of the unit, its size is 19 mm. The diameter of the end that connects directly to the pipeline is 22 mm. This nuance should be taken into account during operation.

Before work, you need to make sure that there is a non-return valve on the drain of the machine, which is capable of passing water in only one direction. If it is not available, refer to the manufacturer's information for the height level to accommodate the hose loop. In this place, you need to create a water seal so that unpleasant odors from the sewer pipe do not enter the room through the machine.

Most modern washing machines have a backflow valve, so there should be no problems connecting the hose. It will only be necessary to correctly connect the end smooth pipe and the rubber reduction. In some cases, fixation is performed to an additional outlet of the siphon. To prevent damage to the rubber reduction, it must be lubricated with a liquid dishwashing detergent before packing into the socket. Thus, the element will be easier to install in a smooth nozzle.

If an additional siphon outlet is used for connection, then it will be enough to remove the factory tube and install the nozzle from the hose in its place. To ensure sealing, a special coupling is used. It will seal the joint. The factory tube in the siphon is intended only to maintain the performance of the elements.