PVC sewer pipe. Plastic sewer pipes Dimensions of orange plastic sewer pipes table

To install new and replace old sewers, PVC pipes are widely used, which successfully compete with similar products made from other materials. PVC pipes for sewerage are available in standard and special sizes to order. By appointment, they are divided into internal, with a diameter of 25 to 110 mm, and external - from 110 to 650 mm or more. Products for external sewer systems are made in orange, and for internal - gray, because they differ markedly in their technical characteristics.

Often choose PVC pipes for sewerage, because it is profitable to purchase them. These lightweight and durable products have a long service life and are relatively cheap. And also they are easy to mount without resorting to special expensive equipment. It is only important to select the appropriate pipe diameter and plan the optimal installation scheme for the sewer system.

Characteristics of PVC pipes

PVC sewer pipes made from the same thermoplastic have:

• light weight;
• minimum thermal conductivity;
• absence of corrosive processes and chemical oxidation;
• durability (up to 50 years);
• shape retention after thermal exposure;
• dielectric properties, which eliminates the passage of current and the need to ground drains;
• thermal endurance from -25 to +65 .

Due to the internal smooth surface, silting and accumulation of dirt on the walls are prevented, there is no damage from the action of solid particles moving along the drain. This is especially important for gravity (without pressure) systems. Polyvinyl chloride thermoplastic, on the basis of which PVC sewer pipes are made, acquires improved properties after high temperature treatment and extrusion - it retains its shape well. Polyvinyl chloride contains ethylene and stabilized chlorine. To improve the quality of the material, various additives are added, and under high pressure a high-strength compound is obtained.

Structural diameters

All PVC sewer pipes are classified according to purpose, diameter and length. The variety of their sizes is explained by the fact that many objects where sewer systems are installed differ in the number and intensity of drains, and each of the water branches is designed for certain tasks and loads. The diameter of the pipe affects its throughput, therefore it has an important characteristic.

Internal sewerage system

Sewer pipes for internal drainage systems have a light stiffness classification and are therefore unsuitable for outdoor installation. These gray products with smooth inner walls are available in lengths from 25 cm to 3 m. They are connected to each other “in a socket”.

The most popular pipes with a diameter of 50-75 mm, with sufficient throughput. But the riser needs a large diameter, and the branch connected to it must have an internal section not less than that of the vertical pipe itself, but not more, in order to avoid blockages.

There are established standards based on calculations according to SNiP (building codes and regulations) for the selection of pipe diameters depending on the volume of liquid flushed per unit of time. For internal sewerage, the following parameters are recommended:

• Ø 25 mm - for dishwashers, washing appliances;
• Ø 30–47 mm - for sinks, bidets;
• Ø 38–50 mm - for kitchen sink, shower, bath;
• Ø 50 mm - for wiring the internal network, joint drain;
• Ø 70–86 mm - for riser outlets;
• Ø 100-110 mm - for the central riser and connecting the toilet to it.

Outdoor sewer system

These products are larger and more durable. Available in orange. Diameters are 110-630 mm, there are more. The most popular length is from 0.5 to 2 m, there are products up to 6 m. According to the classification of ring stiffness, there are three types.

Light (L) - laid in places where there is only pedestrian traffic, because they cannot withstand heavy loads, the laying depth is 80–200 cm.

Medium (N) - acceptable for light soils and where only cars can pass, the laying depth is 2–6 m.

Rigid (S) - have reinforced walls and withstand any load, are laid in places with heavy traffic and in the territories of large industrial enterprises, the pipe laying depth is up to 8 m.

PVC pipes for external sewerage are subject to changes in ground pressure, chemical environmental influences, and heavy loads. Therefore, materials for them are used with increased stability, providing them with a long service life (up to 50 years).

These pipes can be two or three layers. The outer layer consists of unplasticized PVC. In three-layer products, the inner layers are made of porous foam material. External pipes are connected by the method of "hot" technology with the formation of a monolithic structure. The dimensions of the pipes in diameters are not clearly standardized, but it is recommended that they correspond to the indicators of the external line.

Typical dimensions of external PVC sewer pipes:

• Ø 110 mm - the minimum used size, used in suburban areas;
• Ø 150–190 mm - for the withdrawal of wastewater to treatment systems;
• Ø 300 mm - designed for the sewer system of several houses, pool drains, etc .;
• Ø 630 mm - used for highways serving small villages;
• Ø 1100 mm - for city sewer lines.

Selection of the diameter of PVC pipes for sewerage

For the selection of pipes, the decisive parameters are the length, diameter, wall thickness. Pipe markings often have two numbers side by side. For example, 160 × 4.2, where the first is the outer diameter, and the second is the wall thickness. But in planning for calculations, it is also important to know the inner diameter in order to determine the throughput of a PVC pipe. It can be calculated by subtracting twice the wall thickness from the outer diameter: 160 mm - 4.2 × 2 = 151.6 mm. For calculations, the figure is rounded up to 150.

To select the pipe diameter, calculations are made according to SNiP 2.04.01-85. But they require a lot of data, and the calculations themselves are complex. Therefore, many use ready-made tables with average indicators, which have long been tested in practice.

Preparatory stage for pipe installation

First of all, it is necessary to draw up a diagram of the future communication system, perform calculations of consumables, calculate the number and size of fittings, parts needed for work. In addition to straight pipes, many more connecting elements are produced for easy sewerage installation. They come in different sizes and designs.

Their main types:

• crosses and tees for creating pipe layout;
• couplings and expansion pipes that are needed for repairs;
• reductions for connecting pipes with different diameters;
• rotary bends;
• plastic hatches for revision and cleaning of blockages.

When drawing up a plan, it is necessary to provide for a smooth transition in those places where turns are necessary - instead of one rectangular connection, put two fittings of 45 degrees. This will avoid blockages.

When purchasing pipes and additional parts, it is necessary to calculate the consumption of materials with a margin of approximately 15% more, so that downtime does not result. With proper preparation, installation work can be carried out in a private house in a few days, and in an apartment in a few hours.

The main stages of installation

When everything is purchased, it is necessary to prepare PVC pipes for laying. They are cut with special tools, but you can also use a hacksaw for metal. It is better to immediately mark the place of the cut in a circle and cut strictly at a right angle so that the connection is tight. The edges must be carefully cleaned with sandpaper. Connecting parts can be cut during installation.

Any sewage system is located at an angle, the angle of which is calculated even when drawing up the plan. Each functional area may have its own calculations, but on average 4–7 cm is done per meter. So that the pipes do not sag, they must be fixed to the wall after 1 meter.

Prepared pipes and fittings are assembled into the structure using sealed rubber bands, inserted tightly until they stop. The joints must be absolutely clean, it is recommended to lubricate them with various sealants, glycerin lubricants, soap solutions for greater strength.

After the work is done, the sewage system is tested for leaks. To do this, all plumbing is turned on at the same time, and another bucket of water is poured into the sink and bathtub. If leaks are detected, problem areas are more firmly fixed and additionally treated with sealants or building glue. Then a second test is carried out.

PVC sewer pipes are among the first to be used in the pipe industry.

When passing tests in the field, only these products gave positive results - after 50 years of work in the ground, the water pipeline showed full suitability for further operation for the same period.

European countries have appreciated the reliability and environmental friendliness of PVC products - today their use reaches 80%.

Advantages of PVC pipes

Currently, no other species can successfully compete with them. This is due to the following benefits of use.

• Their thermal conductivity approaches that of insulating materials.
• They are bacteriologically and toxically safe.
• They are highly combustible materials, the ignition temperature is 500°C.
• Resistant to chemical (deformation, corrosion, rust) and physical impact.
• Inert to acids, alkalis, etc.
• They have excellent hydraulic properties, which is especially important in horizontal sewerage sections.
• Over time, their throughput does not change - this is facilitated by a smooth inner surface. For the same reason, microbes and bacteria do not develop.
• They are distinguished by resistance to overgrowth of the walls.
• PVC sewer pipes can be used in a wide temperature range - they retain their properties from -20 ° C to + 60 ° C, they are able to withstand even hotter environments - close to 100 ° C without emitting harmful substances.
• Easy to assemble and take the desired shape,
• Even in the presence of a large amount of sand in the drains, wear resistance is great.
• Service life - at least half a century.

All the specified properties, assortment of pipe products and fittings for them must comply with the standard values ​​\u200b\u200bgiven in the tables of GOST and TU, according to which these products are manufactured.

Application area

First of all - for its intended purpose - for gravity drains of new or reconstruction of existing sewer systems (external - Ø 110 mm and above, internal - starting from Ø 50 mm - see table).

• During the construction of entertainment complexes - water parks, swimming pools and fountains.
• In the chemical industry - for the removal of aggressive compounds.
• As transportation of drinks - milk, carbonated and alcoholic products.
• For the needs of agriculture - they make drinking bowls for livestock and carry out watering.

Appointment depending on the assortment

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PVC pipes for sewerage are produced in the range of diameters 50 ÷ 630 mm.
Their assortment corresponds to the size tables used in sewer networks - both external and internal.

The choice is made in accordance with the need to solve the tasks. To simplify this process, a single standard has been created that regulates their sizes. The defining value is the diameter. Table 2 shows the size range of manufactured PVC products for sewer systems.

Manufacturers mark these products according to the outer diameter, indicating the wall thickness. The inside diameter is defined as the difference between the outside and twice the wall thickness.

• Internal sewerage is mounted from pipes with dimensions of 50, 110 and 125mm.
• External - starting from Ø 110 mm.
• Between buildings - with a diameter of 160 mm.
• Along the street - from Ø 200 mm.

When installing communications outside buildings, the dependence of structural rigidity on the expected load is taken into account:

PVC pipes Ø 110 mm

PVC sewer pipes Ø 110 mm have the widest range of applications - both when installing internal communications and external ones.
Their throughput allows them to be used in a small house or apartment, if the amount of plumbing in it is standard.

External sewer systems PVC Ø 110 are installed, if necessary:

1. remove wastewater from buildings and residential premises;
2. install external sewerage in cottages and low buildings;
3. perform a surface drainage system - as a continuation of linear and point drainage systems.

The widespread use of pipes Ø 110 is economically and technically justified. This is favored by:

1. their lightness and elasticity;
2. they are easy to assemble and, if necessary, dismantle.

What does a pressureless system mean?

• Drains are carried out by gravity, when pipes with a size of 110 mm are used:
• for continuous withdrawal of wastewater at a temperature not exceeding 80°C;
• for short-term withdrawal of wastewater at a temperature of 95 ° C.

When laying PVC sewer systems Ø 110 mm, the following should be taken into account:

• mandatory slope - 10-20 mm / m - to ensure the full volume of the catchment;
• the depth of laying should correspond to the level of soil freezing in the region (average value - 1-1.5 m);
• when the system falls asleep, there should be no stones and construction debris, in order to avoid damage;
• do not compact the soil above the sewer.

Pipelines made of PVC pipes with a size of 110 mm can be concreted if they are pre-wrapped with parchment and waterproofing material.

PVC pipes Ø 50 mm

Sewer pipes Ø 50 mm - products with a small diameter, correspond to the beginning of the size range of the sewer pipeline (table 2).
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Are used:

1. when installing external and internal sewer systems;
2. for drinking water supply and heating systems;
3. to create plastic drainage systems inside buildings, connect plumbing to them, as well as to drain drains - domestic and storm;
4. PVC internal sewerage Ø 50 mm is installed in rooms equipped with high temperature water outlets - from washing machines.

Quick and easy installation is ensured by the spigot connection.
Pipes Ø 50 mm have the proper rigidity, are resistant to high temperatures, and are mounted without the use of fittings.

If installation work and operation are performed correctly, then the service life of such sewage systems can be quite long - several decades.

Pipes Ø 50 mm grey, smooth surface. There is a socket for a connecting ring.

Complete with cuff.

Technical features of pipes Ø 50 mm

The extremely high temperature of the passed fluid is 70°C.
A short exposure (up to two minutes) to a hotter liquid is possible - up to 95 ° C.

The tendency to attenuation during ignition is expressed.

There is no reaction to all substances that can be used on the farm.

No release of toxic compounds.

Resistant to the release of acids - organic and inorganic, alkalis.

High strength allows you to withstand a pressure of 12 MPa.

An important task when laying pipelines is to ensure that there is no internal pressure.

Size range of sewer pipes made of polyvinyl chloride

As can be seen from Table 2, the diameters and wall thicknesses are interrelated values. They have fixed values ​​and comply with the norms of SNiP 2.04.01085. The same document defines the formulas for calculating all parameters of the sewer system. If necessary, you can calculate the pressure, temperature, docking angles. For the installation of sewerage in the house, it is enough to take into account the main indicators.

The sewer pipes presented in Table 2 for the installation of internal systems are made with a gray surface, for external communications they are painted red.

Summarize

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• When designing a sewer system, an accurate calculation of the dimensions of pipes for installation at a particular facility should be performed in order to provide the necessary throughput without purchasing elements of a larger diameter than is economically and technically justified.
• A prerequisite for normal operation is the free flow of air to prevent the formation of a low pressure area during flushing, when the water seal is sucked in.
• If the system is mounted correctly, then it will work for a long time and without unpleasant surprises.

All these qualities make PVC sewer pipes the most popular compared to all used today.

PVC sewer pipes have come to replace metal products. Different sections of the sewer require pipes of different sizes. A suitable choice can be made knowing the capacity and characteristics of the sewer pipeline.

Peculiarities

For arranging a sewage drain, pipe structures made of polyvinyl chloride are often used, displacing cast iron and steel. Plastic sewer pipes are made of ordinary and unplasticized PVC. The composition of the material includes vinyl chloride and additional additives. High strength properties make it possible to use unplasticized PVC for the organization of a pipeline with pressure.

Sewer pipes are designed to drain wastewater from a plumbing drain, for the device of the drainage channel, installation of the house and street sewerage. The use of PVC products for sewerage is justified due to the technical characteristics of the material. The long service life of sewer pipelines will allow the system to operate up to 50 years. The tensile strength reaches 50 MPa, so the street sewer section will withstand the laying to the depth of soil freezing. The pipeline is capable of operating under pressure from 6 to 16 bar.

The use of PVC pipes for sewerage has the following advantages:

• A variety of sizes and shapes of pipes and fittings will allow you to assemble sewers of any complexity.
• Smooth internal walls do not allow sewage to settle, preventing the formation of blockages in a small diameter and preventing the pipe passage from overgrowing from deposits.
• The low weight of the products and the ease of cutting ensure quick and easy assembly and disassembly without additional tools.
• Inert to chemicals and corrosive attack.
• Affordable price of pipeline elements.

Temperature mode of operation from -10 to +65 degrees. At -18 degrees, PVC becomes brittle. The material is resistant to softening during short-term heating up to +90 degrees.

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

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

According to the class of strength classify:

• lightweight SN2 structures with a wall thickness of less than 2.3 mm are capable of withstanding loads 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 pipes SN8 with wall thickness from 3.2 to 15.3 mm, varying with diameter, withstand pressure from 800 to 1000 Pa.

Dimensions of PVC sewer pipes: how to choose the right option?
Sewer pipes are used to equip the sewage disposal system. How to choose the diameter of PVC sewer pipes for different sections of the drain? Is the sizing chart for plastic outdoor products suitable for selecting wall thicknesses depending on the load on the piping?

When installing sewer systems, two types of pipes are used - cast iron and plastic. The size of these products is regulated by the Technical Specifications (TU). The standard size, namely the diameter, ranges from 50 to 110 mm.

There are products with a larger or smaller diameter. From this article you will learn the main parameters that PVC and cast iron products have.

They are produced in accordance with TU 2248-022-23208482-02, which allows you to choose the option for any system.

What are sewer pipes

Today, sewer systems are made of two types of pipes: plastic and metal. Plastic can be of three varieties, from:

1. PVC - polyvinyl chloride,
2. PP - polypropylene,
3. PET - polyethylene.

Advantages

• Resistant to chemicals such as acids, alkalis, solvents.
• Durability - they can be buried in the ground to a depth of 16 meters.
• Smooth inner surface, which prevents the formation of plaque inside.
• Light weight - the weight of one meter with a diameter of 110 mm will be only 1.5 kilograms.

Metal sewer pipes cannot boast of a large selection of materials; they are produced only from cast iron.

Advantages of cast iron pipes

• Durability - the service life of cast iron products exceeds 60 years.
• Durability - they allow you to install a riser of almost any length.
• Easy installation - products have a socket, which simplifies installation.

Of course, they are very heavy, but this is offset by their colossal strength.

After familiarizing yourself with the properties of the two types of pipes, you can proceed to their dimensions.

Dimensions of plastic pipes

As mentioned above, plastic pipes come in three varieties: PVC, PP, PET. They differ from each other in characteristics both basic and technical.

And only the sizes remain standard, regardless of the type. Thus, in one system, the use of several types of different materials is allowed.

PVC pipe size and application

Polyvinyl chloride pipes are produced in accordance with GOST R 51613 - 2000 and VSN 48 - 96. Pressure pipelines are regulated by GOST, and non-pressure pipelines by building codes (VSN).

In accordance with building codes, non-pressure pipes have three sizes in diameter - 50 mm, 90 mm, 110 mm. The wall thickness is 3.2 mm, the length is 0.5 - 8 m.

Pressure vessels are significantly different from their non-pressure counterparts. The number of standard sizes is 13 pieces, and the diameter varies from 63 mm to 315 mm.

However, despite such a large assortment of plastic pipes, not all are in demand. The most commonly used options are:

• Except for the most popular options 100 and 110 mm, then 75 mm pipes are very popular. They are used as outlets for bathtubs and showers.
• Pipes with a diameter of 100 and 110 mm are used for the construction of risers and the installation of external pipelines.
• 200 and 300 mm pipe is used in the installation of industrial sewage.

PET sewer pipes

Polyethylene pipes are produced in accordance with the GOST 22689.2-89 regulations, and have only 4 types of assortment. The diameter is - 40, 50, 90 or 110 millimeters. If the pipe is made of low-density polyethylene, then the thickness of its walls will be only 3 mm.

High pressure PET pipes are produced in smaller diameters, and the wall thickness is: 3 mm for pipes with a diameter of 40 - 50 mm, and 5 mm for pipes with a diameter of 90 - 110 mm. The length can vary from 2 to 9 meters, and this depends directly on the diameter of the product. The larger the diameter, the longer the segment.

Polypropylene pipe

Propylene inner pipes are produced in accordance with TU 4926-002-88742502-00. In accordance with these conditions, their diameter can be 50, 100 and 150 mm, and the wall thickness is from 3 to 5 mm, depending on the diameter. Polypropylene products are used both for risers and for outlet lines from plumbing fixtures.

There are also larger polypropylene counterparts that are used for laying external drains. For example, products of the famous brands Pragma and Korsis can have a diameter of 110 mm to 1.2 meters.

Dimensions of cast iron sewer pipes

Functionality is divided into two types:

1. SMU - there is no detachable connection, i.e. both ends are smooth,
2. SME - equipped with a bell at one end, smooth at the other.

The size is characterized by an internal diameter, for example: marking DN 100 means that the diameter inside is 100 mm, and outside it will be already 110 mm. Standard markings for cast iron pipes are from DN 50 to DN 400. Pipes without sockets, with smooth ends, have increased strength and are produced in lengths of 3 m, while conventional split pipes can be from 15 cm or more.

The wall thickness of cast-iron pipes practically does not differ from plastic pipes and is 4 - 5 mm. But despite the same dimensions - length, diameter and wall thickness, the mass of metal and plastic products differs significantly. For example, 1 meter of a cast-iron pipe with a diameter of 100 mm weighs 14 kg, and a plastic analogue of the same dimensions will have a mass of no more than 1.5 kg.

In the table below, you can find the recommended diameters of plastic pipes for internal or external sewage. All data provided are advisory in nature and may vary up or down, depending on the technical characteristics of plumbing fixtures or sewer systems.

Sewer pipe dimensions
The dimensions of sewer pipes made of plastic and cast iron are their length, diameter and weight. The recommended dimensions for internal and external sewerage are given.

Have you ever wondered what caused the great demand for PVC sewer pipes?

The thing is that they are easy to install, easy to use and most importantly - inexpensive.

The modern market offers a wide range of materials with which sewage can be equipped.

And in order to make the right choice, you need to have at least minimal knowledge about their characteristics.

Purpose of PVC pipes and main characteristics

The scope of this material depends on its physical properties. It does not hurt to know that polyvinyl chloride is one of the representatives of the group of thermoplastics, which, after heat treatment and even under mechanical stress, retain their shape and integrity. Ethylene, stabilized chlorine and additives to improve properties are also used in the pipe production process.

The main purpose of PVC pipes is their use in the sewerage system. Depending on their thickness, the scope of use and, accordingly, the type are determined. It could be:

• internal sewerage:
• outdoor,
• pressure system,
• gravity drain.

Plastic pipes: orange - for external sewage, gray - for internal

This classification refers to those models that have undergone appropriate processing. The best technical characteristics are not plasticized polyvinyl chloride PVC-U.

Operational properties directly depend on the technical characteristics. As for PVC pipes, they are characterized by such indicators:

• a high level of mechanical strength, moreover, the three-layer manufacturing technology and external corrugation allows it to be installed deep,
• resistance to the negative influence of an aggressive environment,
• perfectly smooth wall from the inside, which prevents the retention of solid elements,
• high internal pressure, minimum 6 bar and maximum 16,
• the highest drain temperature that is allowed is +65 degrees Celsius, and the minimum is -10 degrees. There are models that can withstand +90 degrees, but if this happens for a short time,
• specific gravity 2 kg per linear meter (the indicator varies depending on the thickness and diameter),
• the tensile strength is 50 MPa, and the service life is about 50 years.

Features of the diameter and size of the sewer pipe

PVC sewer pipe diameter

D - outer diameter of the pipe, Dy - inner diameter of the pipe, Dp - outer diameter of the socket, Lp - length of the socket, L - length of the pipe without socket, L1 = L + Lp

PVC sewer pipe diameter is the main parameter when choosing them, and this does not depend on whether the sewage system is equipped internally or externally. It is worth noting that the different sizes of pipes mean that they are designed for different tasks. Do not forget that the device of the sewer system will be easy and correct if you choose the right size.

PVC sewer pipe diameter table

According to the table, a pipe with a diameter of 40 mm with a slope of 1.3 cm should be used to drain from the bath, further:

• shower - diameter 40 mm, slope 1.48 cm,
• toilet - 100 mm / 1.2 cm,
• sink - 40 mm / 1.12 cm,
• bidet - 30-40 mm / 1.2 cm,
• sink - 30-40 mm / 1.36 cm,
• combined drain - 50 mm / 1.8 cm,
• central riser - 100 mm,
• outlets from the riser - 65-75 mm.

Pipeline options include:

• external diameter,
• inner diameter,
• conditional passage - means the internal section,
• nominal section.

PVC Sewer Pipe Size Chart

It will help to understand what are the sizes of PVC sewer pipes table. You can see it below:

Dimensions of PVC sewer pipes - Table 1

The dimensions of pipes for external sewage are not regulated in any way, the only recommendation is that its diameter should not be inferior to the size of the circumference of the external main. For example, pipes 110-250 mm in diameter can be used in private houses, and even more (about 400 mm) in heavy-load systems.

Dimensions of PVC sewer pipes - Table 2

The thickness of the material is also of considerable importance in operation, it depends on the stiffness class to which the pipe belongs. If we talk about the thickness of the walls, then there are no specific standards for arranging an internal sewage system, but at the same time, it is not advisable to use pipes thinner than 1.8 mm in gravity systems.

How to choose the optimal diameter of sewer pipes?

Of course, the presence of PVC pipes of different sizes can be considered an advantage, but for those who encounter them for the first time, certain difficulties may arise when choosing. To avoid misunderstandings, it is important to know that:

• the diameter of the horizontal pipe cannot be less than the riser through which the wastewater passes. This can cause blockages
• horizontal connections are mounted only with oblique tees and angles, this prevents unnecessary clogging,
• without fail, at each turn, a revision must be installed, which is a special hole for cleaning. In multi-storey buildings, they are installed every 3 floors. Even if the site is long (more than 12 m) and deaf, an audit will still not hurt,
• the optimal slope of the sewer pipe is 1.2 cm,
• cutting not too wide hollow objects is quite simple with a hacksaw or grinder.

How to choose a diameter? If you use a pipe to drain a dishwasher or washing machine, then its circumference should be 25 mm, and if it is a siphon or shower, then 32 mm. On average, sewer pipes installed inside the apartment should be 40-50 mm. For the street, hollow objects of circular cross section with a diameter of 160-200 mm are used.

Methods for connecting PVC pipes depending on their diameter

If the pipe circumference does not exceed 63 mm, then the following connection technologies are allowed for their connection:

1. socket welding - the principle is to place a smaller object in one that is larger,
2. sleeve welding - an additional part is used in the form of a sleeve.

This is what the clutch looks like

Some models have threaded connections and require flare fittings to use.

In the case of pipes larger than 63 mm in diameter, the butt welding method is used. No couplings are needed here, however, the reliability of the connection is in no way inferior to similar methods.

Diameter and dimensions of PVC sewer pipes
The diameter of PVC sewer pipes is the main parameter when choosing them, and this does not depend on whether the sewage system is equipped internally or externally.

PVC pipes for sewerage and water supply. Dimensions

Today, you will not surprise anyone with plastic pipes in water supply and sewerage systems. They confidently displace their metal counterparts from this niche of the plumbing market. Plastic pipes, including PVC products, are resistant to chemically active substances, are not subject to corrosion and are more durable. Modern industry produces several types of similar pipe products. Their characteristics and main differences will be discussed below.

Modern industry produces a wide range of PVC pipes to solve a wide variety of problems.

Types of sewer PVC pipes and their features

The arrangement of sewerage systems is carried out on the basis of the following types of PVC products:

• gray pipes. Are intended for laying of an intra house network of removal of household drains. The main diameters of gray PVC pipes are 50 and 110 millimeters. Such dimensions make it possible to lay plastic sewer lines from any household and sanitary appliances. A wide range of fittings allows you to create a line of various configurations. This factor is important when working indoors. The strength characteristics of the gray PVC pipe allow it to cope with the usual loads that occur in internal networks. But due to insufficient rigidity, such an element of engineering communication is not allowed to be laid in the ground,
• orange pipes. Outdoor networks - this is the main scope of such products.

Useful information! Orange sewer pipes should not be used in domestic networks, as they are less resistant to high temperatures.

The standard diameters of orange PVC plastic pipes are 110 and 150 millimeters, which makes it possible to organize the removal of sewage from any buildings and premises. Their main advantage - increased strength - is provided by a combination of two factors. These are the unique physical properties of the material itself and the increased wall thickness.

In practice, to create external highways, mainly orange smooth-walled products of the following stiffness classes are used:

• SN 4: Withstand periodic loads produced by passing light vehicles,
• SN 8: High strength. The laying of products of this class is allowed under highways with heavy traffic,
• corrugated pipes . Such plastic products have even higher mechanical strength. The area of ​​the outer surface of the corrugation with a variable section is greater than that of a smooth pipeline element of the same diameter. Due to this, the pressure created by the soil is redistributed. That is why even large corrugated pipes can withstand significant loads.

Gray smooth pipes are mainly intended for domestic sewage, therefore they are presented on the market in small diameters.

The industry produces two types of such products:

• single layer. The inner and outer surface is ribbed. The price of a single-layer corrugated pipe is relatively small. However, the efficiency of effluent removal through them is significantly deteriorating,
• two-layer. The inner surface is smooth and the outer surface is ribbed. This design provides a level of flow resistance that is no greater than conventional smooth wall sewer pipes of similar dimensions.

Typical corrugated PVC pipe diameters range from:

• outer 110 ≤ D out ≤ 1135 mm,
• internal 93 ≤ D vn ≤1000 mm.

Corrugated gray and orange products are widely used in the construction of filtration fields. This material significantly increases the service life of the drainage system and its durability. If we talk about drainage mains, then their arrangement without PVC corrugated products is simply impossible.

In addition, corrugated plastic pipe products are used in the laying of electrical communications and perform the function of protecting them from mechanical damage. But there is still such a factor as the possibility of a fire during a short circuit. And from this point of view, corrugated PVC pipes are an excellent solution. This is not only about the fact that they ignite at a temperature of 400 ° C. Corrugated PVC products are also self-extinguishing.

Advantages of PVC pipe products

The advantages of a plastic PVC pipe abound. Of these, it is worth highlighting:

• high strength,
• the absence of the phenomenon of overgrowing with solid deposits of the inner surface. Furthermore! PVC sewer pipe is self-cleaning. That is, the homeowner will not have to regularly clean the system,
• wear resistance. The passage of drains containing abrasive inclusions does not cause damage to the inner surface of the pipeline,
• environmental safety,
• affordable cost.

PVC pipes withstand heavy loads without loss of performance, they are suitable for laying in the ground

This list goes on and on. However, the above advantages are enough to give preference to PVC products when creating a sewer pipeline.

Useful advice! But we should not forget about the minus of PVC products: the maximum allowable temperature of the working medium transported for a long period of time is +40˚С. +60˚С declared by many manufacturers are allowed for short-term movement of liquid with such a temperature. Prolonged contact with hot water leads to a sharp reduction in the life of the PVC pipeline.

How to purchase PVC products for sewerage

A wide range of PVC products complicates their choice. Before buying, pay attention to the following physical and technical characteristics of such pipes.

• strength. The low density of the material leads to sagging of the pipeline in long sections. Especially noticeable is the increase in the size of the PVC pipe when it is full. Therefore, when mounting such sections, you will have to use additional brackets,
• working environment. The presence of aggressive liquids in the created sewage system is not excluded. This is important, for example, for small industries. For the pipeline to serve for a long time in such operating conditions, correlate the characteristics of its plastic components with the expected composition of the wastewater,
• section length. As you know, the linear dimensions of PVC pipes are different. Therefore, when developing a sewer system project, it is necessary to measure all distances. To form straight sections, it is better to use whole tubular products without any additional connections,
• pipe diameters. Different sections of the sewage disposal system are equipped with pipes with different sections. To organize a drain from the bathroom, you can use products with diameters of 50 millimeters. And the connection of the system to the central riser should be carried out by a pipe with a cross section of 100 millimeters or more.

A table of PVC pipe diameters and linear dimensions of sockets is presented below.

PVC pipes for sewerage and water supply
PVC pipes sizes. Types of sewer PVC pipes and their features. Advantages. How to purchase PVC products for sewerage. PVC pipes for plumbing. Pros and cons.

Have you ever wondered what caused the great demand for PVC sewer pipes?

The thing is that they are easy to install, easy to use and most importantly - inexpensive.

The modern market offers a wide range of materials with which sewage can be equipped.

And in order to make the right choice, you need to have at least minimal knowledge about their characteristics.

Purpose of PVC pipes and main characteristics

The scope of this material depends on its physical properties. It does not hurt to know that polyvinyl chloride is one of the representatives of the group of thermoplastics, which, after heat treatment and even under mechanical stress, retain their shape and integrity. Ethylene, stabilized chlorine and additives to improve properties are also used in the pipe production process.

The main purpose of PVC pipes is their use in the sewerage system. Depending on their thickness, the scope of use and, accordingly, the type are determined. It could be:

• internal sewerage:
• outdoor;
• pressure system;
• gravity drain.

Plastic pipes: orange - for external sewage, gray - for internal

This classification refers to those models that have undergone appropriate processing. The best technical characteristics are not plasticized polyvinyl chloride PVC-U.

Operational properties directly depend on the technical characteristics. As for PVC pipes, they are characterized by such indicators:

• a high level of mechanical strength, moreover, a three-layer manufacturing technology and external corrugation allows you to install it deep;
• resistance to the negative influence of an aggressive environment;
• perfectly smooth wall from the inside, which prevents the retention of solid elements;
• a large value of internal pressure, a minimum of 6 bar, and a maximum of 16;
• the highest drain temperature that is allowed is +65 degrees Celsius, and the minimum is -10 degrees. There are models that can withstand +90 degrees, but if this happens for a short time;
• specific gravity 2 kg per linear meter (the indicator varies depending on the thickness and diameter);
• the tensile strength is 50 MPa, and the service life is about 50 years.

Features of the diameter and size of the sewer pipe

PVC sewer pipe diameter

D is the outer diameter of the pipe; Dy is the inner diameter of the pipe; Dr is the outer diameter of the socket; Lp is the length of the socket; L is the length of the pipe without a socket; L1 = L+Lp

PVC sewer pipe diameter is the main parameter when choosing them, and this does not depend on whether the sewage system is equipped internally or externally. It is worth noting that the different sizes of pipes mean that they are designed for different tasks. Do not forget that the device of the sewer system will be easy and correct if you choose the right size.

According to the table, a pipe with a diameter of 40 mm with a slope of 1.3 cm should be used to drain from the bath, further:

• shower - diameter 40 mm, slope 1.48 cm;
• toilet bowl - 100 mm / 1.2 cm;
• sink - 40 mm / 1.12 cm;
• bidet - 30-40 mm / 1.2 cm;
• sink - 30-40 mm / 1.36 cm;
• combined drain - 50 mm / 1.8 cm;
• central riser - 100 mm;
• outlets from the riser - 65-75 mm.

Pipeline options include:

• external diameter;
• inner diameter;
• conditional passage - means an internal section;
• nominal section.

PVC Sewer Pipe Size Chart

It will help to understand what are the sizes of PVC sewer pipes table. You can see it below:

Dimensions of PVC sewer pipes - Table 1

The dimensions of pipes for external sewage are not regulated in any way, the only recommendation is that its diameter should not be inferior to the size of the circumference of the external main. For example, pipes 110-250 mm in diameter can be used in private houses, and even more (about 400 mm) in heavy-load systems.

Dimensions of PVC sewer pipes - Table 2

The thickness of the material is also of considerable importance in operation, it depends on the stiffness class to which the pipe belongs. If we talk about the thickness of the walls, then there are no specific standards for arranging an internal sewage system, but at the same time, it is not advisable to use pipes thinner than 1.8 mm in gravity systems.

How to choose the optimal diameter of sewer pipes?

Of course, the presence of PVC pipes of different sizes can be considered an advantage, but for those who encounter them for the first time, certain difficulties may arise when choosing. To avoid misunderstandings, it is important to know that:

• the diameter of the horizontal pipe cannot be less than the riser through which the wastewater passes. This can cause blockages;
• horizontal connections are mounted only with the help of oblique tees and corners, this prevents unnecessary clogging;
• without fail, at each turn, a revision must be installed, which is a special hole for cleaning. In multi-storey buildings, they are installed every 3 floors. Even if the site is long (more than 12 m) and deaf, an audit will still not interfere;
• the optimal slope of the sewer pipe is 1.2 cm;
• cutting not too wide hollow objects is quite simple with a hacksaw or grinder.

How to choose a diameter? If you use a pipe to drain a dishwasher or washing machine, then its circumference should be 25 mm, and if it is a siphon or shower, then 32 mm. On average, sewer pipes installed inside the apartment should be 40-50 mm. For the street, hollow objects of circular cross section with a diameter of 160-200 mm are used.

Methods for connecting PVC pipes depending on their diameter

If the pipe circumference does not exceed 63 mm, then the following connection technologies are allowed for their connection:

1. socket welding - the principle is to place a smaller object in one that is larger;
2. sleeve welding - an additional part is used in the form of a sleeve.

Some models have threaded connections and require flare fittings to use.

In the case of pipes larger than 63 mm in diameter, the butt welding method is used. No couplings are needed here, however, the reliability of the connection is in no way inferior to similar methods.

The sewerage system has long been no longer a luxury in a private house. The presence of sewerage allows you to install sinks, sinks, a bathtub, a shower and even a toilet bowl in the house, simplifying the life of a modern person, making it comfortable. Previously, cast iron pipes were used to create drain systems. The advantage of this material is its high strength, so it is able to withstand various mechanical loads. This material has a long service life, but it also has disadvantages - high cost and heavy weight. Despite all the advantages of cast iron, today it has been replaced by such a popular material as plastic. Plastic sewage has more advantages than cast iron, so the use of this material is widespread.

Varieties of plastic sewer pipes

Plastic sewer pipes are classified according to a number of the following parameters:

1. Scope of application;
2. Diameter. Particular attention when choosing a pipeline is given to the internal diameter;
3. Length. Depending on the material of the pipeline, products are produced both in a certain length (standardized) and in various footage;
4. Wall thickness, which directly affects such an indicator as strength and service life;
5. The material used to make the pipeline.

Plastic sewer pipes are divided into four main types:

1. Polyethylene;
2. Polypropylene;
3. PVC;
4. Polybutylene.

All these types of plastic pipes have found their use, both in multi-apartment buildings, and in private houses and even cottages. Before the construction of the sewage system, it is necessary to select pipes for its construction, since factors such as long service life and reliability influence the correct choice. To make the right choice of plastic pipes for the construction of sewers, you need to know the characteristics of each type of material.

Polyethylene pipelines

High-pressure polyethylene pipes are popular in the installation of waste systems, as they have the following advantages:

• long service life;
• reliability;
• good technical parameters.

In what cases is it appropriate to use polyethylene pipelines for the construction of sewers, we will consider in detail.

1. If the soil contains chemicals. Polyethylene is not exposed to the negative effects of chemicals, so it is also used to remove aggressive environments in the form of acids and alkalis in production.
2. When living in the northern regions. Polyethylene is not adversely affected by low temperatures, so it is advisable to use it for the construction of waste systems in regions with a harsh climate. If there is a possibility of freezing of the pipeline, then it is recommended not to neglect its insulation in order to avoid clogging of the pipe cavity.
3. When arranging sewerage from the kitchen. It is not uncommon for such cases when several drain pipelines are being built in a private house. One sewer is used for the bathroom, and the second for the kitchen. For the construction of a kitchen drain, it is recommended to use pipes made of polyethylene, as they have a smooth inner surface, so there is no deposition of fat accumulations on the walls.

The disadvantage of polyethylene is the tendency to soften at temperatures above 80 degrees. To eliminate negative consequences, it is recommended not to pour boiling water into the sewer or dilute it with cold water.

If you give preference to cross-linked polyethylene, then such a material can withstand temperatures up to 200 degrees. At the same time, it costs 2 times more than ordinary polyethylene.

Pipes made of this material are used for arranging water pipes, but in rare cases they are mounted for sewage. The main advantage of polypropylene is the low weight of the products, so even one person can handle the installation of the pipeline.

The advantages of polypropylene pipes are the following factors:

1. High degree of wear resistance.
2. The strength of the material, so it is not afraid of minor mechanical stress.
3. Resistance to high temperatures.

It can be used where there is a possibility of mechanical damage, and boiling water often descends through the pipeline. Among the shortcomings, it should be noted that the material is afraid of the cold, therefore, even at -15, a crack may occur. If the product is not sufficiently insulated, then the sewer will soon have to be changed. This material is not suitable for the northern regions, as well as for the removal of aggressive substances. When exposed to a negative environment (acid or alkali), the material decomposes.

PVC pipelines for sewerage

For the arrangement of waste systems, pipelines made of such material as polyvinyl chloride or PVC are often used. PVC pipes have many advantages due to which they have found their application in this area. Polyvinyl chloride sewer pipes are relatively inexpensive, and as efficient as possible.

The rationality of their use is due to the following factors:

1. Resistance to aggressive factors. If you often have to drain acids, alkalis and other types of chemical reagents into the sewer, then a PVC pipeline does this task best.
2. Ability to withstand medium mechanical loads. Plastic, although not designed for mechanical loads, but thanks to the ribbed base, this material is not subject to deformation.
3. Ability to withstand temperature fluctuations. The destruction of the material is observed only with prolonged exposure to a high temperature of +120 degrees.
4. There is no need to ground the pipeline, as PVC is non-conductive.

Corrugated two-component PVC pipelines are the most popular materials for the construction of sewer pipelines in the ground.

Polybutylene pipelines for sewerage

Polybutylene is one of the least used materials for the construction of sewage. This material is often used for water supply or construction of heating systems. However, due to the fact that the material promotes the development of bacteria, it is used for the construction of plumbing in rare cases.

The main feature of polybutylene is elasticity. After unwinding the pipeline from the bay, it very quickly assumes a straightened position. Due to its elasticity, this type of material is used for laying pipelines in the panels of frame houses, including for the construction of sewers. Polybutylene is highly flammable and also devastating at chlorine concentrations greater than 2 mg/L.

Sewer pipes made of plastic and their dimensions

What are sewer pipes made of plastic, and how they differ from each other, is now known. An important criterion that characterizes sewer pipelines is the standard size. The pipe assortment of plastic products is quite diverse, therefore, when choosing a pipeline, it is important to pay attention to the dimensions of the pipelines.

The diameters of PVC sewer pipes are presented in the table below.

Features of the selection of the optimal diameter

When laying PVC plumbing pipes for sewerage, it is important to consider the dimensions. To select the correct dimensions of pipelines for the sewer system, it is recommended to rely on the following features:

For external sewage, plastic pipelines larger than 110 mm are used. The construction of an external plastic sewer with a diameter of less than 110 mm for a private house can lead to the need for frequent revisions to clean the system. When constructing a sewage system, it is important to take into account criteria such as the number of floors in a private house, as well as the number of inhabitants.

What connects plastic pipes

When constructing a sewage system, in addition to pipelines, connectors will also be needed. Products such as fittings act as connecting elements. They come in different types and sizes, so let's look at some of them.

There are many other connector options that are used depending on their purpose.

Rigidity of plastic pipes: what does color mean

The rigidity of plastic pipes is closely related to strength. To distinguish products, manufacturers decided to paint them in different colors. The light brown color of the pipeline means that it is intended for arranging the sewage system indoors. Orange-brown products are intended exclusively for the construction of an external network.

Products differ from each other in the class of rigidity:

1. SN2 - are used for the construction of waste systems where there is no traffic.
2. SN4 - are used where there is moderate traffic.
3. SN8 - are used for the construction of sewers where there is an intensive movement of heavy vehicles.

When choosing plastic products, attention is paid to the class of rigidity, which will extend the life of the system.

Features of the installation work

If the installation of the sewer pipeline is carried out independently, which is quite realistic, then it is important to take into account some features of the work. These features include:

When connecting sewer pipelines, it is recommended to additionally coat the joints with waterproof sealants. This will eliminate not only the occurrence of smudges, but also an unpleasant smell in the room.

Plastic sewer products are characterized by efficiency, unlike their cast-iron counterparts. If there is a need to repair the sewer or construct a new drain, then for the construction it is recommended to give preference to a new type of material - plastic.