Parameters and sizes of plastic sewer pipes depend on their area of application - whether it is an internal or external pipe. The outer ones have greater wall thickness, and, consequently, strength. Plastic pipes differ in the material from which they are made:
- Pipes made of polypropylene (PP), the most common option, are produced in accordance with GOST 26996-86, which determines the composition of PP and copolymers. GOST does not establish a specific standard for them: “plastic pipes” sewer dimensions" But in a market economy standard sizes PP pipes developed independently: the following diameters of sewer pipes are available for sale: plastic pipes: 32, 40, 50 and 110 mm; length options: 150, 250, 500, 750, 1000, 2000 and 3000 mm.
- Pipes made of high-density polyethylene (HDP) are produced in accordance with GOST 22689.2-89. Since they are produced wound into coils and cut into pieces of any desired length, GOST establishes only their diameters: 40.50, 90 and 110 mm. PVP pipes are divided into pressure and non-pressure. For pressure pipes, GOST 18599-83 prescribes the diameter of sewer plastic pipes from 10 to 1200 mm.
- Polyvinyl chloride (PVC) pipes. The dimensions of this type of plastic sewer pipe are established by GOST 51613-2000. According to his instructions, PVC pipes should be from 10 to 315 mm in diameter, with a length of 4 to 12 m.
This article discusses in detail the features of such products as PVC pipes for sewerage: the sizes and prices of plastic elements and additional components used for installing a drainage system. In the text you can find a classification of pipes, their advantages and disadvantages, as well as an overview of the catalogs offered construction stores. This information can be used to select and purchase PVC products for sewer installation.
The sewerage system is constructed on the basis of pipes, which are an integral part of the system. During operation, these elements are subject to static and dynamic loads, so the selection of products should be approached thoroughly and attention should be paid to the technical characteristics.
Polyvinyl chloride products are widely used for the construction of both internal and external sewerage systems. Among other polymer products, they are considered the most popular and in demand. These cylindrical plastic products are made from polyvinyl chloride thermoplastic. This material has one advantageous property, due to which PVC pipes acquire improved characteristics. The fact is that polyvinyl chloride thermoplastic retains its shape well after heat treatment and extrusion.
According to GOST 51613-2000, free-flow PVC pipes for sewerage are tested for impact strength using the Charpy system. The maximum permissible number of elements that are subject to destruction should not exceed 10%.
Note! A slight change in the length of the elements after heating is allowed, but not more than 5%.
GOST also defines standard sizes of plastic pipes for sewerage, as well as maximum deviations from the parameters that are allowed in quality products. Polyvinyl chloride contains two components - stabilized chlorine and ethylene. In order to improve performance characteristics, manufacturers add various additives to thermoplastic mixtures. As a result, under the influence high pressure a composite connection with a high margin of safety is obtained.
Why is it profitable to buy PVC pipes for sewerage?
Polymer products have many advantages. Manufacturers have made plastic pipes lightweight, while maintaining enough high level strength. The cost is affordable for most buyers, so consumers prefer this type of product.
To the number the most important advantages can also be considered beneficial performance characteristics. Inner walls polymer pipes have a smooth surface with a slight presence of longitudinal stripes and waviness, so the likelihood of blockages caused by the accumulation of fecal fractions or growths is extremely low. Plastic is not subject to corrosion and is resistant to aggressive environments.
PVC pipes are ideal for the construction of pressure sewers. Moreover, installation of the system can be done with my own hands. This does not require the use special equipment. Available in a wide variety of sizes and mounting elements, which greatly simplifies the design and installation of pipeline layout.
Products intended for laying external sewers are characterized by frost resistance. The effective operational service life of pipes made from polymers exceeds 50 years. If you strictly follow the requirements installation technology, the sewer line will not be displaced. Docking nodes often diverge when the level of occurrence changes groundwater. But if there were no violations during the installation process, even in such conditions the system of polymer pipes remains sealed.
Important! Under the influence of ultraviolet radiation, the performance characteristics of pipes are reduced. Therefore, it is not recommended to store products in places where they will be exposed to direct sunlight.
Types of plumbing pipes and PVC adapters for sewerage
Range plastic products is very wide, thanks to which consumers can buy plastic pipes for sewerage of any modification and purpose. Taking into account the purpose and operating conditions, three categories of elements for highway construction can be distinguished.
All of them are in full compliance with the main standard sizes. Products with a lightweight design (SN-2) are used for laying sewerage in the pedestrian sidewalk area. The scope of their application also extends to recreation areas with green spaces, as well as areas that are not subject to traffic loads.
Pipes with average parameters (SN-4) are laid in areas where there is little traffic. Heavy type pipes (SN-8) are provided especially for industrial areas. These products are suitable for organizing a sewer system in areas with high traffic flow.
In addition to straight pipes for sewer construction, connecting elements are used. With their help, you can organize turns of the line (fittings equipped with a rubber seal). They are also used to form connections between the toilet and the sewer system from plastic pipes or joints between other elements.
The following types of adapters are available for sale:
- couplings for network maintenance;
- reductions connecting elements with differences in section size;
- tees and crosses for forming the distribution of several pipes;
- rotary bends;
- expansion pipes for repair work.
In addition, you can buy plastic sewer hatches in stores to carry out inspections. These elements are also used for service systems when blockages occur.
PVC pipes for sewerage: sizes and prices of products
The most popular diameter of PVC sewer pipes is 110 mm. Such products are lightweight and do not cause difficulties during installation. Pipes intended for construction outdoor system, can have a two-, one-, or three-layer structure. The outer layer is made of non-plasticized PVC. In three-layer products, the inner layers are made of foam material having a porous structure. It is a recycled product.
The pipe walls are connected simultaneously using “hot” technology. The result is a cylindrical product with monolithic design. Due to the cavities that form between the walls, it is possible to reduce the weight of the pipe.
Classification of products by ring stiffness class:
- L – lightweight products that are laid to a depth of 80-200 cm.
- N – pipes of medium hardness, intended for installation at a depth of 2-6 m.
- S - rigid products with large wall thicknesses that can withstand loads at a depth of up to 8 m.
Helpful advice! To organize an external system, it is recommended to use double-layer pipes with a corrugated structure. Thanks to the presence of stiffening ribs on the outside, the strength of the products increases.
Ring stiffness is marked with the abbreviation SN. Technical specifications pressure pipes and elements for systems where the movement of wastewater is carried out by gravity are completely different. In each case, the sewerage system is subjected to different loads: pressure pressure or the influence of gravity. For this reason, prices for pressure-type sewer plastic pipes are significantly higher than for elements for gravity systems.
Pressure pipes are available in three variations, able to cope with the influence of pressure of 10, 6 and 12.5 kg per cm².
Dimensions and prices of plastic pipes for sewerage: external system
For the construction of external and internal sewer systems, products of different sections are used.
Typical diameter sizes of plastic pipes for sewerage:
- 110 mm – minimum size sections for external pipes, used for drainage in summer cottages;
- 315 mm - products with this cross-section are intended for the construction of a common sewer system serving several houses;
- 630 mm – pipes with maximum size sections for the construction of a highway capable of serving a small village.
In addition, to work with external system you will need to buy a sewer pumping hose made of polyvinyl chloride.
Prices for fecal hoses:
| Manufacturer | price, rub. |
| Pedrollo TR (10 m) | 1650 |
| Omnigena (100 m) | 2500 |
| Aqua Planet Group (25 m) | 2870 |
Pipes for external sewerage are manufactured in orange color, so they cannot be confused with other product options. Cylindrical elements can have different lengths. The most popular lengths are 0.5, 1 and 2 m. There are other variations, for example, 3 m and 6 m. Some manufacturers have an extended range of sizes. They offer individual elements with a length of 12 cm.
Average prices for PVC products class SN 4 for external sewerage:
| Diameter, mm | Product length, mm | price, rub. |
| 110 | 560 | 95 |
| 1000 | 162 | |
| 2000 | 310 | |
| 3000 | 455 | |
| 4000 | 594 | |
| 6060 | 896 | |
| 125 | 572 | 116 |
| 1072 | 204 | |
| 2072 | 403 | |
| 3072 | 553 | |
| 4072 | 805 | |
| 6072 | 1050 | |
| 160 | 580 | 182 |
| 1000 | 294 | |
| 2000 | 565 | |
| 3000 | 837 | |
| 4000 | 1098 | |
| 6080 | 1662 | |
| 200 | 606 | 230 |
| 1200 | 527 | |
| 2000 | 862 | |
| 3000 | 1274 | |
| 4000 | 1673 | |
| 6090 | 2530 | |
| 315 | 1200 | 1225 |
| 2000 | 1973 | |
| 3000 | 2887 | |
| 4000 | 3917 | |
| 6140 | 5752 |
Price of PVC sewer pipes for internal sewerage
Pipes intended for arranging the internal drainage system are made in gray color. They have low price, since these products are characterized by a light rigidity class and are completely unsuitable for outdoor work. The most popular PVC pipes for sewerage are 50 mm in diameter. Although there are other section sizes on sale - 32, 40 and 110 mm.
The inner walls of gray pipes are smooth. The elements are connected to each other using the “socket” technology. The length varies from 25 cm to 3 m, although non-standard sizes are also found.
Note! Branch connecting plumbing to vertical pipe, must correspond to the diameter of the riser. The use of a smaller section is not allowed.
To build a drainage system in a bathroom, it is recommended to use pipes with a cross-section of 75 mm. They are suitable for connecting a shower cabin, bidet and washbasin to a public sewer system. They are characterized by a fairly high throughput.
For domestic wastewater, products with a diameter of 50 mm will be sufficient. They are light, elastic and resistant to high temperatures ( hot water) and the influence of chemicals (in case of cleaning the system chemically). To connect the toilet, it is better to take products with a cross-sectional size of 100-110 mm. They will withstand strong pressure because they are particularly durable.
Dimensions and prices of PVC pipes for indoor plumbing:
| Diameter, mm | Product length, mm | price, rub. |
| 32 | 250 | 30 |
| 500 | 45 | |
| 1000 | 60 | |
| 2000 | 105 | |
| 40 | 250 | 32 |
| 500 | 47 | |
| 1000 | 63 | |
| 2000 | 108 | |
| 50 | 250 | 35 |
| 500 | 48 | |
| 750 | 55 | |
| 1000 | 65 | |
| 1500 | 86 | |
| 2000 | 113 | |
| 3000 | 150 | |
| 110 | 250 | 90 |
| 500 | 120 | |
| 1000 | 160 | |
| 2000 | 240 | |
| 3000 | 450 |
Catalog of fittings for PVC sewerage and prices for products
Fittings are used in systems where the wastewater temperature does not exceed 80ºC. The products also withstand short-term removal of waste liquid at temperatures up to 95ºC.
In this case, drainage means:
- Dirty water from the toilet.
- Waste liquid from the shower stall and sink.
- Chemical compositions with a pH level in the range of 2-12.
The following parts are used for internal sewerage:
- couplings (with stop, full bore for repair);
- reduction;
- audits with a cover;
- tees (with an angle of 90, 67, 45º);
- two-plane crosses (with an angle of 90 and 45º);
- plugs;
- single-plane crosses (with an angle of 90 and 45º);
- bends (with an angle of 45, 30 and 90º);
- compensation pipes.
A set of fittings for an external sewer system looks almost the same, although there are certain differences.
The following parts are used for external sewerage:
- standard bends (with an angle of 30, 15, 45, 90 and 67º);
- double-socket bends equipped with rubber rings on both sides;
- standard couplings;
- standard and three-socket tees (the latter option with an angle of 90º);
- single-plane crosses (90º);
- , mounted horizontally with a slope of 2 cm per 1 m of length;
- two-arm siphons.
Average prices for connecting elements for an external system:
| Item type | Diameter, mm | Angle, º | price, rub. |
| Retraction | 110 | 15 | 125 |
| 30 | 125 | ||
| 45 | 130 | ||
| 60 | 150 | ||
| 87 | 130 | ||
| 125 | 45 | 135 | |
| 87 | 135 | ||
| 160 | 15 | 242 | |
| 30 | 264 | ||
| 45 | 295 | ||
| 60 | 315 | ||
| 87 | 367 | ||
| Tee | 110/110 | 45 | 235 |
| 125/110 | 45 | 275 | |
| 125/125 | 45 | 345 | |
| 125/110 | 87 | 355 | |
| 125/125 | 87 | 360 | |
| 160/110 | 45 | 430 | |
| 160/160 | 45 | 590 | |
| 160/110 | 87 | 400 | |
| 160/160 | 87 | 480 | |
| Audit | 110 | - | 480 |
| 125 | - | 500 | |
| 160 | - | 595 | |
| Stub | 110 | - | 48 |
| 125 | - | 100 | |
| 160 | - | 135 | |
| coupling | 110 | - | 107 |
| 125 | - | 110 | |
| 160 | - | 255 | |
| Check valve | 110 | - | 1940 |
| 125 | - | 2500 | |
| 160 | - | 3585 |
Recommendations for installing sewerage from plastic pipes with your own hands
The sewer system in old buildings was primarily made of cast iron. Despite the practicality of this material, sooner or later it needs to be replaced. For the construction of modern risers, more durable and lightweight materials are used.
Helpful advice! When replacing the pipeline, it is possible to organize ventilation, which was absent in old-type systems. This way, it will be possible to eliminate unpleasant sewer odors that may enter the room.
Experts even recommend refusing to use galvanized products, whose lifespan is no more than 10 years, and giving preference to polyvinyl chloride or polypropylene products. The shelf life of polymer elements is 30-50 years.
For dismantling old sewer You will need the following tools:
- large screwdrivers to remove small parts from the system;
- grinders with a metal disc;
- plastic film to cover the pipe opening at the cut;
- nail puller and chisel;
- funds personal protection(glasses, gloves, apron);
- hammer and perforator;
- scrap and grinding machine.
How to make the transition from a cast iron pipe to a plastic sewer: dismantling the old system
First you need to indicate the necessary indents. The first mark is placed at a distance of 10 cm from the ceiling level, and the second mark is placed at a distance of 80 cm from the tee. In the marked areas, you need to make cuts using a grinder, with a depth of half the cross-section of the pipe. Place a chisel on the top cut and hit it with a hammer.
A similar procedure must be performed from below. The hammer must be struck with force to crack the cast iron pipe so that the middle section can be removed.
The section of pipe coming from the ceiling must be covered with plastic film.
The lower part of the system consists of a tee and other connecting elements. To dismantle it you will need a crowbar or a nail puller. These tools are necessary to loosen the fixation zones. Once this is done, you can remove the . In some cases, you cannot do without using a hammer drill. It allows you to remove the cement that holds the fasteners in place.
You can use a screwdriver or chisel to chip away the cement. After this, the tee is removed. If it fails this procedure, to cut the fitting, you can use a grinder equipped with a disk designed to work with metal surfaces. In this case, you should step back from the socket by about 3 cm. After dismantling the connections, you should thoroughly clean the areas where they are located from dirt, and then treat the surface with a grinding machine.
Helpful advice! Before starting work, you must notify your neighbors, since you cannot use the toilet or bathroom while the pipeline is being replaced. Otherwise, the water upper floors will pour into the room and flood the neighbors below. For the same reason, all work must be carried out as quickly as possible.
Instructions for installing sewerage from plastic pipes
To perform installation work, you will need the following tools and materials:
- pipes with a cross-sectional size of 110 mm;
- outlet tee;
- rubber cuffs designed to seal and secure the fasteners between the PVC pipe and scraps of the cast iron system;
- a pipe providing a transition from a cast iron pipe to a plastic one and vice versa;
- pipe fastenings;
- soap, which will be used as a lubricant to facilitate installation of fasteners;
- vertical building level.
The process of installing plastic pipes is carried out in a similar way, only in reverse order. Into slices cast iron pipes you need to insert rubber sealing cuffs. The adapter is installed from above, the tee must be installed from below. The fixation of all elements must be as tight as possible to ensure the tightness of the sewer system. If the tee moves freely in the connection, it can be sealed using linen tape or silicone-based sealant.
Sewer lines are subject to wear and tear and will need to be replaced over time. Products made from polyvinyl chloride in the plumbing market have shown themselves to be positive side and in the near future they will replace outdated cast iron equipment.
Types of PVC pipes
Polyvinyl chloride is an innovative material used for the manufacture of pipes and fittings. Used for internal and external sewerage, gravity drainage, pressure communications, etc.
When laying sewer lines, they rely on the recommendations of the manufacturers: PVC products for internal sewerage exclusively gray, and for external decoration - orange.
Sewer pipes and fittings
The use of polyvinyl chloride products for interior spaces and a wide range of fittings allow you to create lines of any configuration. Their strength and reliability will cope with the loads arising in pipeline networks. However, this type is categorically inapplicable for outdoor use as it is not rigid enough.
External polyvinyl chloride pipes cannot be used inside the house, since they are unstable to elevated temperatures. The scope of their operation is external communication highways. Pipe diameter 100-150 mm allows for the removal of sewage from different buildings. Wall thickness is the main factor responsible for strength and durability.
Regarding the area of application, PVC sewer pipes are divided into:
- SN-2 is a lightweight version, used on sections with light loads, in particular, in residential areas and when laying household systems communications in the room.
- SN-4 – compacted version, used when laying sewer lines under roads where there is moderate traffic load;
- SN-8 is a heavy-duty option designed for urban sewers and for areas with high levels of traffic.
Types of sewer fittings At PVC assembly shaped products occupy an important place in sewer systems:
- crosses and tees used for wiring;
- turn signals, due to which the direction changes;
- gearboxes designed for connecting sewer pipes of different diameters made of PVC;
- pipes - allow you to reduce the impact of linear expansion on communications;
- couplings, plugs, revisions, clamps, etc.
It should be taken into account: the fewer bends, the more economical the installation, and the design will be more practical.
Important! When laying a pipeline yourself, the price will consist not only of the cost of the main material, but also of auxiliary elements, and it is much higher than the price of a PVC pipe.
Advantages and disadvantages of PVC products
PVC equipment has a number of advantages compared to metal:
- not subject to corrosion;
- has smooth walls that prevent the formation of precipitation;
- does not conduct electricity;
- is not a source of harmful substances;
- susceptible to temperature changes;
- long service life;
- ease of assembly and installation;
- reasonable price.
Like any other equipment, PVC systems have weaknesses:
- PVC products used at temperatures below 15˚C require thermal insulation;
- low level of thermal conductivity;
- It is not recommended to use PVC pipes in places where the operating temperature is above 60˚C;
- the presence of damage reduces service life and load resistance.
Sewer insulation Important! PVC pipes located in the apartment do not require insulating coating. When laying communications externally, the pipeline must be insulated and insulated.
Technical characteristics of PVC pipes
Length, diameter and wall thickness are the main parameters according to which the dimensions of PVC pipes are determined. The table below shows the standard sizes of PVC sewer pipes and their prices.
Type of sewer | External ⌀, mm | Internal ⌀, mm | Length, mm | Min wall thickness, mm | Average clearance, mm | Max wall thickness, mm | Price, rub/m |
| Internal | 32,0 | 30,0 | from 300 | 1,0 | 28,4 | 1,8 | from 24.0 |
| 40,0 | 38,0 | 1,0 | 36,4 | 1,8 | from 29.0 | ||
| 50,0 | 47,4 | 1,3 | 46,4 | 1,8 | from 51.0 | ||
| 75,0 | 71,2 | 1,9 | 70,4 | 2,3 | from 130.0 | ||
| 90,0 | 85,6 | 2,2 | 84,4 | 2,8 | from 199.0 | ||
| 110,0 | 104,6 | 2,7 | 103,2 | 3,4 | from 606.0 | ||
| External | 125,0 | 118,6 | from 1200 | 3,2 | 117,2 | 3,9 | from 229.0 |
| 160,0 | 153,6 | 3,2 | 150,2 | 4,9 | from 2300.0 | ||
| 200,0 | 192,2 | 3,9 | 187,6 | 6,2 | from 3800.0 | ||
| 250,0 | 240,2 | 4,9 | 234,6 | 7,7 | from 4300.0 | ||
| 315,0 | 302,6 | 6,2 | 295,6 | 9,7 | from 3500.0 | ||
| 400,0 | 384,6 | 7,7 | 375,4 | 12,3 | from 10000.0 | ||
| 500,0 | 480,4 | 9,8 | 469,4 | 15,3 | from 14900.0 | ||
| 630,0 | 605,4 | 12,3 | 591,4 | 19,3 | from 27700.0 | ||
| 800,0 | 769,2 | 15,4 | 751,0 | 24,5 | from 33,000.0 | ||
| 1000,0 | 960,8 | 19,6 | 938,8 | 30,6 | from 71400.0 | ||
| 1200,0 | 1151,0 | 24,5 | 1126,8 | 36,6 | From 92300.0 |
Branch under washing machine According to building codes PVC pipe diameters used:
- 25 cm – for washing machines;
- from 30 cm to 47 cm – for sinks;
- 50 cm – for wiring communications indoors;
- from 70 cm to 86 cm – layering from the riser;
- from 100 cm to 118 cm – for the toilet;
- from 150 cm to 190 cm – the section from the riser to city communications;
- 200 cm – drainage of waste water;
- from 240 cm to 300 cm – drainage of wastewater from reservoirs, swimming pools, Jacuzzis;
- from 300 cm to 1100 cm – urban sewerage systems.
Note! When laying a sewer system, you should adhere to the requirements of SNiP, otherwise stagnation of waste promises very unpleasant consequences.
Flare connection An important role in the installation and installation of sewerage systems is played by the socket, the main purpose of which is a quick and tight connection. Below is a table showing the standard sizes of sockets.
Nominal pipe ⌀, cm | Internal ⌀ bell, | Bell length, cm | Installation length, cm | ||
| Extended | Normal | Extended | Normal |
||
| 63,0 | 63,1 | 36,1 | 22,8 | 24,2 | 22,8 |
| 50,0 | 50,1 | 32,3 | 20,0 | 21,2 | 20,0 |
| 40,0 | 40,1 | 29,1 | 17,8 | 18,8 | 17,8 |
| 31,5 | 31,6 | 27,2 | 15,8 | 17,1 | 15,8 |
| 25,0 | 25,1 | 26,5 | 12,5 | 16,7 | 12,5 |
| 20,0 | 20,1 | 22,6 | 9,0 | 13,3 | 9,0 |
| 16,0 | 16,1 | 21,4 | 7,4 | 12,3 | 7,4 |
| 11,0 | 11,1 | 20,1 | 5,8 | 11,3 | 5,8 |
Main parameters of PVC sewer pipe
The weight of a polyvinyl chloride product depends on the wall thickness and diameter. However, this figure will be several times less than that of metal ones with identical parameters. At the same time, manufacturers are trying to reduce the material consumption of the product without losing strength. detailed information about the weight of one linear meter PVC sewer pipe can be found in the table below.
| diameter, mm | SN-4 | SN-8 |
| Weight, g | Weight, g | |
| 160 | 1830 | 2300 |
| 200 | 2900 | 3400 |
| 250 | 5000 | 5900 |
| 315 | 7900 | 9500 |
| 400 | 12800 | 15300 |
| 500 | 19600 | 24700 |
In addition to the above, selective information on pressure relative to wall thickness can be found in the table below.
| Diameter, mm | Minimum wall thickness | ||||
| Series, S | |||||
| 12,5 | 16 | 10 | 5 | 8 | |
| Pressure PN, atm | |||||
| PN-8 (atm) | PN-6 (atm) | PN-10 (atm) | PN-20 (atm) | PN-12.5 (atm) | |
| 630 | 2,4675 | 1,9740 | 2,9610 | 5,7246 | 3,7506 |
| 315 | 1,4805 | 1,4805 | 1,5792 | 2,8623 | 1,8753 |
| 900 | 3,4545 | 2,7636 | 4,2441 | 8,0934 | 5,3298 |
| 400 | 1,5792 | 1,4805 | 1,8753 | 3,6519 | 2,3688 |
| 750 | 2,8623 | 2,2701 | 3,5532 | 6,7116 | 4,4415 |
| 500 | 1,9740 | 1,5792 | 2,3688 | 4,5402 | 2,9610 |
Important! When purchasing a PVC pipe for sewerage, it is worth requesting a quality certificate to compare the declared and actual product values.
PVC Pipe Buying Guide
The huge variety of PVC pipes often puts the buyer in a difficult position, thereby complicating the choice. Before purchasing, you must carefully study the technical and physical properties of the product and decide under what conditions it will be used.
Conditions of use - Strength. Over long sections of the pipeline, sagging may occur. This phenomenon can occur when low-density PVC sewer pipes are used. In such situations, special brackets are recommended.
- Conditions of use. The time of using sewerage can be reduced significantly in cases where operating conditions are violated; for example, when aggressive particles appear in the pipeline.
- Length of the highway. Before designing a sewer system, it is necessary to make accurate measurements in accordance with linear characteristics of PVC pipes, on straight long sections it is better to use solid ones.
- Diameter. On sections of the sewer main, pipes of one or another section are used. Thus, for drainage in the bathroom, products with a diameter of 50 mm are used, and when connecting to a central riser - 100 mm.
PVC pipes reliable and practical, therefore they are leaders in the plumbing market. Before carrying out sewerage, you should carefully study the technical characteristics and requirements for operating conditions, compliance with which can significantly increase the service life.
Drainage systems made from modern polymer materials have enormous advantages over outdated structures made of cast iron and steel. Apart from the fact that there are a wide variety of sizes of PVC sewer pipes on sale, these products are distinguished by their excellent technical characteristics. PVC pipes are lightweight and easy to work with, polymer plastic resistant to mechanical stress, chemically active liquids, fungus and mold. Of course, not the least important is the durability, reliability and affordable cost of PVC plumbing pipes for sewerage, the dimensions of which allow you to create systems of any size and complexity. But, in order to carry out this work quickly and efficiently, you need to know what performance qualities are inherent in plastic sewer pipes.
Purpose of PVC pipes
The sizes of plastic sewer pipes are varied enough to transport a wide variety of liquids inside and outside the house to the final point, which may be general system sewage collection, collector or septic tank. Despite the fact that these products look almost the same, their purpose may not differ significantly depending on the model.
So, regardless of size, PVC sewer pipes have the following strength classification:
- Heavy. The products have reinforced thick walls that can withstand the most extreme pressure, both externally and internally. They are used for laying pipelines under roads, in industrial and other facilities with heavy traffic.
- Average. Withstands loads from light soil and movement passenger cars. They have a fairly wide range of use in pressure and non-pressure systems.
- Lungs. Pipes of this class are used to create internal sewerage, storm and drainage systems. They are laid underground only in places with pedestrian traffic, since they do not have a sufficient margin of safety. For the most part, they are used for arranging non-pressure internal sewage systems.
Using plastic pipes different sizes external and internal are created sewer structures, pressure and gravity drainage systems for wastewater, stormwater and melt water. When choosing PVC sewer pipes, you need to take into account that the size and color of the products are different. So, sections and fittings for interior works are gray in color. PVC pipes for external sewerage have more impressive dimensions. Products in this series have a bright Orange color. Regardless of type and size, plastic sewer pipes match perfectly in all respects.
Plastic pipe sizes
On a note: The efficiency and practicality of a drainage system directly depends on the size of the PVC drainage pipes used to assemble them.
This does not mean at all that you need to use the largest products. This approach is incorrect, as it leads to unnecessary expenses money, energy and living space indoors. Everywhere you need to find a middle ground.
Standard sizes of plastic sewer pipes are divided according to the following indicators:
- Length. The most common sections are 300 cm long. They are most suitable for renovation and construction of houses with ceiling heights of 240-280 cm. There is practically no waste left. To equip non-standard premises, you can purchase sections with lengths of 50, 100, 150 and 200 cm. This allows you to avoid unnecessary costs and unnecessary work associated with sawing into blanks and folding cut points.
- Outside diameter. This value is indicated on outside products. It is taken into account when designing a building and arranging external sewerage, as the initial data for making grooves in the walls, the depth and width of the trench. As a rule, parts with a diameter of 50 mm and 100 mm are used for furnishing apartments and houses.
- Inner diameter. This indicator determines throughput systems. It is measured in square centimeters or millimeters.
- Wall thickness. This indicator determines the strength of the structure. It directly depends on the rigidity class of the product. The wall thickness varies between 1.8-6 mm. For internal systems The thinnest pipes are sufficient. When arranging an external highway, it is worth selecting products with maximum wall thickness to guarantee resistance to soil pressure.
When purchasing sections, you need to purchase fittings of the appropriate parameters. To avoid unwanted discrepancies in sizes, it is advisable to buy a set of parts from one manufacturer. The goods must be taken with a margin of up to 15% to account for scraps and possible errors.
Video about installing pipes of different diameters
PVC sewer pipes were among the first to find application in the pipe sector.
When passing tests in field conditions Only these products gave positive results - after 50 years of work in the ground, the water supply system showed full suitability for further exploitation within the same period.
European countries have appreciated the reliability and environmental friendliness of PVC products - today their use reaches 80%.
Advantages of polyvinyl chloride pipes
Currently, no other species can successfully compete with them. This is due to the following advantages of use.
- Their thermal conductivity approaches that of insulating materials.
- They are bacteriologically and toxically safe.
- They are classified as highly flammable materials, the ignition temperature is 500°C.
- Resistant to chemical (deformation, corrosion, rust) and physical influence.
- Inert to acids, alkalis, etc.
- They have excellent hydraulic properties, which is especially important in horizontal sections sewerage.
- 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 their resistance to wall overgrowth.
- PVC sewer pipes can be used in a wide range of temperatures - they retain their properties from -20°C to +60°C, and can withstand hotter environments - close to 100°C without releasing harmful substances.
- Easy to install and take the desired shape,
- Even if there is a large amount of sand in the drains, the wear resistance is high.
- Service life is at least half a century.
All specified properties, assortment tubular products and shaped elements for them - must comply with the standard values given in the GOST and TU tables 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.
- For transporting drinks – milk, carbonated and alcoholic products.
- For needs Agriculture– they are used to make watering troughs for livestock and carry out irrigation.
Purpose depending on the assortment
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PVC pipes for sewerage are available in a diameter range of 50 ÷ 630 mm.
Their range 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 assigned problems. To simplify this process, a single standard has been created regulating their sizes. The defining quantity is the diameter. Table 2 shows the size range of manufactured PVC products for sewer systems.
Manufacturers mark these products by outer diameter indicating wall thickness. The internal diameter is defined as the difference between the external diameter and twice the wall thickness.
- Internal sewerage is installed from pipes of sizes 50, 110 and 125 mm.
- External – starting from Ø 110 mm.
- Between buildings - with a diameter of 160 mm.
- Along the street – starting from Ø 200 mm.
When installing communications outside buildings, the dependence of the structural rigidity on the expected load is taken into account:
PVC pipes Ø 110 mm
Sewage pipes made of polyvinyl chloride Ø 110 mm have the widest range of applications - both when installing internal and external communications.
Their capacity allows them to be used in small house or an apartment, if the amount of plumbing in it is standard.
External PVC sewer systems Ø 110 are installed if necessary:
- remove wastewater outside buildings and residential premises;
- mount external sewerage in cottages and low buildings;
- implement a surface drainage system - as a continuation of linear and point drainage systems.
The widespread use of Ø 110 pipes is economically and technically justified. This is favored by:
- their lightness and elasticity;
- They are easy to install, and if the need arises, they can be dismantled.
What does a gravity system involve?
- Drains are carried out by gravity when pipes measuring 110 mm are used:
- for continuous removal of wastewater at a temperature not exceeding 80°C;
- for short-term removal 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 area;
- the laying depth must correspond to the level of soil freezing in the region (average value - 1-1.5 m);
- when filling the system, there should be no stones or construction debris to avoid damage;
- Do not compact the soil above the sewer.
Pipelines made from 110 mm PVC pipes can be concreted if they are pre-wrapped with parchment and waterproofing material.
PVC pipes Ø 50 mm
Sewer pipes Ø 50 mm are products with a small diameter, corresponding to the beginning of the size range of the sewer pipeline (Table 2).
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Are used:
- when installing external and internal sewer systems;
- For drinking water supply and in heating systems;
- for creating plastic drainage systems inside buildings, connecting plumbing to them, as well as for draining wastewater - domestic and storm water;
- internal PVC sewerØ 50 mm is installed in rooms equipped with high-temperature water drainage - from washing machines.
Fast and easy installation is ensured by a socket connection.
Pipes Ø 50 mm have proper rigidity, are resistant to high temperatures, and can be installed without the use of fittings.
If installation work and operation is carried out correctly, the service life of such sewage systems can be quite long - several decades.
Ø 50 mm gray pipes with a smooth surface. There is a socket for a connecting ring.
Supplied with a cuff.
Technical features of pipes Ø 50 mm
Extremely heat the liquid passed through is 70°C.
A short-term exposure (up to two minutes) to a hotter liquid is possible - up to 95°C.
There is a tendency to extinguish upon fire.
There is no reaction to all substances that can be used on the farm.
There is no release of toxic compounds.
Resistant to the release of acids - organic and inorganic, alkalis.
High strength allows you to withstand pressure of 12 MPa.
An important task when laying pipelines is to ensure that there is no internal pressure.
Size range of manufactured sewer pipes made of polyvinyl chloride
As can be seen from Table 2, diameters and wall thicknesses are interrelated quantities. They have fixed values and comply with SNiP 2.04.01085 standards. The same document defines formulas for calculating all parameters of the sewer system. If necessary, you can calculate pressure, temperature, and joining angles. To install a sewer system in a house, it is enough to take into account the basic 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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- Designing sewer system, it is necessary to accurately calculate the dimensions of pipes for installation at a specific site in order to ensure the necessary throughput without purchasing elements of a larger diameter than is economically and technically justified.
- A prerequisite for normal functioning is the free flow of air to prevent the formation of an area low pressure when flushing, when the water seal is sucked inward.
- If the system is installed correctly, it will work for a long time and without unpleasant surprises.
All these qualities make PVC sewer pipes the most popular compared to all those used today.
