PVC sewer pipes. Plastic sewer pipes PVC sewer pipe

When installing wastewater disposal systems, cast iron pipes were previously widely used, less commonly made from other materials. But they all have a number of certain limitations in use, related, for example, to ease of transportation, specific installation, maintenance, and the like. PVC sewer pipes have become a good alternative and are being actively introduced in various industries, including in the public utilities sector, precisely because they do not have the disadvantages that characterize samples from other materials.

The abbreviation PVC stands for “polyvinyl chloride,” although such products are often called vinyl plastic or vinyl chloride. There is no difference, since we're talking about about the same material. Why is it so attractive for use in engineering systems drainage?

Characteristics of PVC pipes

All specified product features are generalized, since there are several types plastic pipes, which differ in production technology, and therefore in specific properties.

Flaws

1. Limited operating temperature range – from -10 to +65 °C, in some cases, up to +90 °C (short-term exposure). But for sewerage systems this is not important.
2. Thin-walled pipes may resonate in some cases. Therefore, when laying them in routes, it is necessary to carry out a number of additional operations to soundproof the highways.

Classification

By strength:

• SN8 - heavy. They are used when laying in routes passing under various objects, including highways.
• SN4 - medium. Likewise, only in areas with less traffic.
• SN2 - lungs. Such pipes are used at shallow depths in the ground, and are widely used in housing and communal services and the private sector.

By application:

• For internal sewerage – gray or black.
• For outdoor (outside buildings) - yellow or orange.

By pressure:

• Pressure.
• Non-pressure (gravity drainage).

According to manufacturing technology:

• PVC (PVC).
• PVC-U (PVC-NP) – unplasticized vinyl chloride. They are more durable and resistant to aggressive substances. Most often used in pressure systems.

According to the engineering solution:

• Smooth-walled.
• Corrugated.

By fastening method:

• Socket connection.
• Gluing.

PVC pipe cost

The range of products is quite large, but the data provided for individual types of products will help you navigate pricing (in rubles/linear meters).

• 160 mm – from 260 (for outdoor work).
• 110 mm (3.2 – wall thickness), socket – from 104 (for indoor installation) and 155 (for outdoor).
• 50 mm – from 55 (for internal installation).

1. The diameter of the external pipes must be greater than that of the central riser.
2. Approximate cross-sections for drain connections (mm):

• shower, sink, bath and the like - 40 (if combined drain - at least 50);
• various branches from central highways - at least 65;
• toilet, riser – 100.

Sewage is one of the most important systems that ensure a comfortable existence modern man. Therefore, its installation and repair is given Special attention. Currently, the most popular material for creating a sewer system is plastic. And this is not surprising, because plastic pipes are easy to install, light in weight, long term services and are very inexpensive. Therefore, they are increasingly displacing cast iron and steel sewers from the construction market.

Advantages of plastic sewerage

Plastic sewerage has a number of advantages that ensure its ever-growing popularity. Thus, layering does not form inside it due to the fact that it has a smooth inner surface. Installation plastic sewer does not require the use of complex tools. For example, you can cut a plastic pipe using a simple hacksaw, without burrs appearing, and even if they do appear, they can be easily cleaned off.

Thanks to modern technologies The plastic used to make sewage systems is very reliable and durable. You can assemble a plastic sewer with your own hands without special labor and without large material costs. Using heat treatment, a plastic pipe can be bent at any angle.

The undeniable advantages of plastic sewerage are:

• light weight;
• resistance to corrosion, influence chemical substances, aggressive drains, etc.;
• reasonable price;
• long service life;
• low thermal conductivity.

Types of plastic

Polypropylene

Polypropylene is used for the manufacture of pipes used in pressure sewer and water supply systems.

Characteristics of polypropylene:

• due to the fact that polypropylene is resistant to abrasion, it is perfect for sewers with abrasive wastewater;
• pipes made from this material, due to their low weight, are easy to transport and install;
• polypropylene is resistant to high temperatures: its softening is possible only at temperatures above 140ºС, and melting - above 175ºС;
• polypropylene is resistant to aggressive chemical compounds;
• polypropylene is easily destroyed during transportation if the ambient temperature is from -5 to -15ºС. But pipes laid in the ground can withstand lower temperatures;
• state standard exists only for polypropylene pipes, which include copolymers;
• size propylene pipe usually determined technical specifications, which are determined by the customer. Most often they have a diameter of 32 mm, 40 mm, 50 mm, 110 mm;
• the length of pipes made of this material varies from 150 to 3000 mm.

Polyethylene

Characteristics of pipes made of polyethylene:

• This type of pipe is very resistant to alkalis and acids. For example, containers in which electrolytes for charging batteries and alkalis for cleaning earthenware are stored are made of polyethylene;
• polyethylene easily withstands low temperatures. When water freezes in polyethylene pipes, they begin to stretch, and as soon as the ice plug melts, they return to their original size;
• due to the smoothness of the inner surface of polyethylene pipes, deposits do not form in the sewer;
• The disadvantage of this material is its low resistance to high temperatures. But there are still types of polyethylene that can withstand up to 80ºС.

Corrugated polyethylene

It is used to create street sewerage. It is made of two layers. In the production of corrugations, only high-quality polyethylene grades PE63 or PE80 are used. Corrugated polyethylene pipes They are not afraid of the effects of chemical compounds, and thanks to the ring rigidity they can be installed at a depth of one to twenty meters. Size corrugated pipes made of polyethylene for sewerage is determined by GOST 22689.2-89 and is 40, 50, 90 or 110 mm. Pressure pipes made of polyethylene in accordance with GOST 18599-83 have sizes from 10 cm to 120 cm. Pipes with a diameter of more than 160 mm are made in the form of segments from five to twelve meters long. Smaller diameter products can be in the form of lengths, coils or coils.

PVC

Polyvinyl chloride, or PVC, is the most commonly used material for the manufacture of plastic sewerage. PVC sewers are used to create new systems in new buildings, and are also used when replacing old sewer systems.

Characteristics of PVC sewerage:

• PVC is resistant to various chemical compounds (alkalis, oils, acids, etc.);
• Polyvinyl chloride is not flammable, but it deforms when exposed to temperatures from 65-70 degrees, and at temperatures from 120ºC it begins to decompose with the release of hydrogen chloride, so you should not use this material in engineering systems where high temperatures may be present;
• PVC is a dielectric, meaning it does not conduct electricity, so it does not require grounding;
• UPVC (unplasticized polyvinyl chloride), despite its elasticity, can break if subjected to strong impacts or bends;
• The density of polyvinyl chloride, depending on the brand, can vary from 1.35 to 1.43 g/cm3.

Plastic pipe sizes

The size used to create plastic sewer pipes depends on the load on the pipeline and its purpose. For example, when installing a sewer system in a private house, drain pipes from sinks and bathtubs should have a diameter of 40-50 mm, and from the toilet - 100-110 mm. This is due to the fact that when flushing water from the toilet cistern, a large amount of water enters the sewer system at the same time, in addition, solid waste can enter the sewer from the toilet, which can clog a small diameter pipe, so for the toilet you should use a pipe with a diameter of 100-110 mm. The patency of the pipe is determined by the patency of its narrowest section. In the bathroom, the narrowest area is the siphon outlet, so it makes no sense to use a pipe with a diameter of more than 40-50 mm for the bathroom.

Advice. Since plastic pipes, unlike cast iron ones, have a smooth inner surface and, accordingly, are not prone to the formation of deposits, the diameter of these products is from different materials may vary in the same area. So, you can replace a cast iron pipe with a diameter of 50 mm with a plastic one with a diameter of 40 mm, and the throughput of the sewer system will not be affected.

The table below provides recommendations for selecting pipe sizes for a particular sewer section. These recommendations are indicative and may vary up or down depending on the characteristics of the sewer system and the factors influencing it.

Polyvinyl chloride pipes (PVC) are made from the thermoplastic of the same name, which retains its shape after heat treatment. The main components of polyvinyl chloride are ethylene and stabilized chlorine, and with the help of additional additives, the properties of PVC pipes are improved.

Most often, PVC pipes are used for sewer networks, due to their ease of installation and low cost. Material for PVC production pipes: PVC polyvinyl chloride (PVC) and its twin PVC-U polyvinyl chloride (PVC-U) unplasticized. PVC-U pipes have better technical characteristics, and this allows them to be used in pressure systems, which is why they are used more often.

Advantages and disadvantages of PVC pipes

PVC pipes, thanks to a range of benefits, have become a leader among similar products for sewer installation:

The main disadvantage of PVC pipes is temperature restrictions, which are no more than +65°С and no less than -10°С.

Use of PVC pipes

Using PVC pipes it is possible to implement the following types of sewerage systems:

• internal sewerage;
• external sewerage;
• pressure systems external sewerage;
• gravity drainage of wastewater.

The names of the species themselves sewer systems quite accurately reflect the essence of the application. But it should be noted that of the types of pipes used, PVC-U is most often used, since they have better strength characteristics.

Selection and application of PVC pipes

A feature of sewer pipes when choosing is an unusual criterion - wall thickness. This follows from the fact that non-pressure pipes, and most sewer systems are non-pressure, there is no need to choose according internal pressure. The only reasonable approach is to ensure sufficient strength pipe walls for the volume of liquid that will fill it, and possible mechanical influences from external environment. For these reasons, when choosing sewer pipes, two parameters are taken into account:

• inner diameter, which should provide the predicted volume of wastewater;
• wall thickness to ensure sufficient mechanical strength from the vicissitudes of fate.

Internal sewerage

For internal sewerage As a rule, PVC pipes with grey color. Their characteristic features:

• smooth-walled;
• connection - socket;
• line of popular sizes: diameters - 32, 40, 50 and 110 mm, lengths from 315 to 3000 mm;
• the thickness is selected based on rigidity conditions, but as a requirement for gravity flow systems it is never less than 1.8 mm.

External sewerage

Pipes orange or yellow colors are for external gasket and are operated under more severe conditions, therefore for them there is a separate list of wall thicknesses for each diameter. So, for example, data for a diameter of 200 mm:

• For lungs rigidity conditions (SN 2) with a burial depth of up to 4 m, wall thickness 3.9 mm;
• For average rigidity conditions (SN 4) with a burial depth of up to 6 m, wall thickness 4.9 mm;
• For heavy rigidity conditions (SN 8) with a burial depth of up to 8 m, wall thickness 5.9 mm.

The same tabular data is available for other diameters. When designing sewer systems, they are taken into account.

Sewerage using pressure and free-pressure PVC pipes

In systems with forced removal of wastewater, i.e. using pumps, PVC pressure pipes are used. They are characterized by increased pressure on the walls, so the requirements are appropriate. Three types of pressure pipes are available 6, 10 and 12.5 kg/sq. cm. Additionally, you should choose the connection method:

Gravity sewer system uses the movement of wastewater under the influence gravity. To select such pipes, take into account external load, and during installation the pipeline must be tilted. Typically, pipes with a socket are used for free-flow sewerage.

The difference between PVC pipes and other polymer pipes

The most common plastic, polyvinyl chloride, is far from the only polymer that is used in the manufacture of sewer pipes. Along with it, the following plastics are used:

• polyethylene PE- the most common plastic for making pipes for transporting water. Due to temperature restrictions, it can only be used for cold water.
• cross-linked polyethylene- resistant to UV radiation, withstands high mechanical loads, has an upper temperature threshold of + 95 °C, solder connection, used for cold and hot water;
• polypropylene PPE- polypropylene pipes are widely used in various industries, thanks to their good mechanical properties and chemical resistance. The use of polypropylene pipes in cold and hot water pipelines is especially successful.
• polybutylene PB- cross-linked polyethylene, not widespread due to insufficient durability. Structural defects, cracks and peeling, appear within a few years. Produced in small quantities.
• polyvinylidene fluoride PVDF is a semi-crystalline thermoplastic with excellent mechanical, physical and chemical properties and is used in the pharmaceutical industry for pumping drugs.

Many of the plastic pipes can compete with PVC, but in terms of price-quality advantages, they have no competitors.

Prices of PVC sewer pipes

The prices of any product are the most interesting part after discussing the technical merits. Here you can never rely on today's figures - they largely depend on the manufacturer. And then the shipping cost comes in. But you still need to indicate guidelines, so let’s take one of the cost options for pipes with a diameter of 110 mm. This amounts to 165 rubles per 1 linear meter.

Additionally, it should be noted that prices for PPE pipes, the closest competitor to PVC, almost 3 times higher, although with a larger set positive qualities. In such cases, they say that there is an excess of advantages, but whether it is worth paying for them is up to the consumer to decide.

The final price of sewer construction, taking into account the installation of the system, can add completely unexpected somersaults to the estimate. For a rough estimate, let's take the option of calculating the construction of a sewerage system in a country house with our own hands.

It is assumed that the dacha is located in standard conditions: terrain differences are insignificant, level groundwater low, there are no quicksands, there is a place for discharging purified water, etc.

Every owner wants everything in his household to work, nothing to break, and to be easy to maintain and install. And sewerage is no exception. It needs to require as little attention as possible - it’s very inconvenient if it gets clogged, but it’s no less unpleasant to clean it. If you want to have a trouble-free drainage system, pay attention to plastic sewer pipes. They are gradually replacing cast iron ones, and all because they cost less, are easier to install, and have a large assortment - different diameters and length, almost no deposits form on their smooth walls, and their service life is about 50 years. This whole bouquet of properties determines their popularity.

Types of plastic sewer pipes

• polyethylene (PE):
  • high pressure (HPV) - for internal sewerage distribution;
  • low pressure (LDPE) - can be laid outside, in trenches (they have greater strength);
• polyvinyl chloride (PVC);
• polypropylene (PP)

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

The material of plastic sewer pipes is selected depending on the application. For example, polypropylene is more suitable for installing sewerage inside a house or apartment. It has a higher operating temperature range - it normally tolerates environments up to 70°C, and for a short time - up to 95°C. If there are different household appliances, discharging waste hot water into the sewer, it will not be superfluous. PVC pipes having more than low prices, are more appropriate when laying external sewerage - here the drains are usually already mixed, so the temperatures are lower and PVC can withstand them without harm (working up to +40°C, short-term increase to 60°C).

Also sewer pipes There are smooth and corrugated. Moreover, not only siphon bends can be corrugated. There are profiled pipes for sewerage with an internal smooth wall and an external ribbed one. They have greater strength - they can better withstand compressive loads (they have increased ring rigidity) and can be buried to great depths. Available in diameters from 110 mm to 1200 mm.

Dimensions and diameters

Sewage plastic pipes, unlike water and gas pipes, are produced in the form of lengths of 50 cm, 100 cm, 200 cm, etc. - up to 600 cm. Maximum length- 12 meters, but some manufacturers can make longer sections upon request. When laying long routes, this is convenient - there are fewer connections, fewer possible places for problems to arise (leaks or blockages).

Another important characteristics of plastic pipes are diameter and wall thickness. In the markings they usually go side by side: the numbers are 160 * 4.2. What does it stand for: outside diameter pipes 160 mm, wall thickness 4.2 mm. It’s worth remembering here that manufacturers indicate the outer diameter of plastic pipes, and many calculations and planning require knowing the inner one. It is easy to calculate: subtract twice the wall thickness from the outer wall: 160 mm - 4.2 mm * 2 = 151.6 mm. Calculations and tables usually contain a rounded result - in in this case- 150 mm.

In general, the industry produces plastic pipes for sewerage with a diameter of 25 mm. Maximum cross section depends on the type of pipe (smooth or corrugated) and the material from which it is made. For example, smooth sewer PVC pipes can be up to 630 mm in diameter, and double-layer profiled ones - up to 1200 mm. But these dimensions are of no use to homeowners or apartment dwellers. In private housing construction, diameters up to 100-110 mm are mainly used, rarely up to 160 mm. Sometimes, for a large cottage with big amount plumbing fixtures, you may need a pipe 200-250 mm in diameter.

How to choose a diameter for connecting plumbing fixtures

According to the rules, a calculation must be made; it is fully spelled out in SNiP 2.04.01085. This is a complex matter, a lot of data is required, so few people really think as it should. Over the years, accumulated practice has made it possible to derive the average diameters of polyethylene sewer pipes for each of the plumbing fixtures. You can safely use these developments - all calculations usually come down to these dimensions.

Name of plumbing fixture	Diameter of plastic sewer pipe	Slope	Distance between central drain and siphon
Bath	40 mm	1:30	100-130 cm
Shower	40 mm	1:48	150-170 cm
Toilet	100 mm	1:20	up to 600 cm
Sink	40 mm	1:12	from 0 to 80 cm
Bidet	30-40 mm	1:20	70-100 cm
Kitchen sink	30-40 mm	1:36	130-150 cm
Combined drain - bath, sink, shower	50 mm	1:48	170-230 cm
Central riser	100-110 mm
Bends from the central riser	65-75 cm

As you can see, plastic pipes for sewerage with a diameter of 30-40 mm are mainly used. Only for the toilet is much needed larger size- 100-110 mm. This is due to the peculiarity of its functioning - it is necessary to remove a large amount of water in a short period of time. At the same time, there must be room for air in the pipe, otherwise it will break the water seals on other plumbing fixtures and “aromas” from the sewer will enter the room.

When installing, you need to remember a few more rules:

You also need to remember about insulating or heating the sewer outlet in a private house. The vertical section that runs from the outlet to the entrance to the trench must be well insulated. Additionally, they are often used. In the case of sewers, they are usually laid outside and then covered with thermal insulation material.

That's it, that's all. The rules are simple, but if you follow them, everything will work for a long time and without failure.

Features of installation of plastic sewer pipes

Plastic pipes for sewerage on one side end with a socket into which a sealing rubber. The segments are connected simply: a straight edge is inserted into the socket. Since the dimensions are strictly standardized, this is, in principle, sufficient for a hermetically sealed connection. In practice, the O-ring is often additionally coated with silicone plumbing sealant.

When installing sewer plastic pipes, sometimes they have to be cut. Convenient to do with hand saw with a blade for metal - small teeth cut well and leave an almost even edge. You can also use a grinder or jigsaw. In any case, before installing the cut piece, its edge must be processed sandpaper with fine grain - remove possible burrs, make it even. Some piece of waste may get caught on the protruding pieces, and as a result, a blockage may form in this place. Therefore, we carefully smooth out the cut area.

When creating a sewer network in a house or apartment, it is often necessary to make a branch. There are fittings for this - adapters from one diameter to another, tees, angles with different degrees of rotation, etc.

Polyvinyl chloride (PVC) pipes are famous for their high resistance to chemically active substances, as well as their strength, which makes them indispensable in the construction and repair of external sewer systems.

Low price, light weight and ease of assembly of structures from PVC products have ensured the enormous popularity of this material.

Characteristics of PVC pipes

The operational parameters of polymer pipes depend on their technical characteristics. There are fundamental properties that are unique to this material:

• High resistance to mechanical deformation. Thanks to the three-layer manufacturing method and external corrugation, plastic pipes can be used in external sewer networks at a depth of up to eight meters.
• Smoothness of the inner surface. Solid elements included in wastewater can move freely inside the pipeline.
• Good resistance to internal pressure. PVC pipes can withstand pressures from 6 to 15 bar. The minimum and maximum values ​​are affected by the wall thickness and pipe design.
• Presence of temperature restrictions. At ambient temperatures above 65 degrees or below 10 degrees, deformation of polymer products can occur, which, of course, is a big disadvantage of polyvinyl chloride. Some models allow a short-term increase in temperature to 90 degrees.
• The material has a maximum tensile strength of 45-55 MPa (megapascal).
• Almost half a century of service life.
• High elasticity, no accumulation of deposits on the internal walls of the pipeline, resistance to rust.
• Smooth inner surface allows you to avoid cases of pressure drop.
• PVC pipes are not afraid of microorganisms that live in sewage, as well as ultraviolet rays.
• The wall thickness of plastic pipes varies from 1.3 to 36 millimeters (such thick pipes are used for industrial purposes).

Advantages of a plastic pipeline

PVC pipes for external sewerage boast many positive qualities:

1. Affordable price. The technology for producing polyvinyl chloride is a long-established process provided with all the necessary equipment.
2. Lightness of the material. This quality allows you to simplify the transportation, installation, maintenance, repair and dismantling of the sewer network - most of the work can be done alone without anyone’s help.
3. Simplicity installation work. To fasten most models of PVC pipes, you do not need to use welding machine– the presence of sockets with rubber seals eliminates unnecessary hassle. To cut the required length of PVC pipeline, it is enough to purchase a regular hacksaw.
4. Flame resistance. Due to its low flammability, the material can be used in buildings where flammable objects are stored.
5. No toxicity. The material does not emit harmful substances into environment.
6. Corrosion resistance.
7. The material practically does not enter into chemical bonds with alkalis, acids and petroleum products.
8. Small abrasive particles of various origins contained in wastewater not dangerous for this material.

Disadvantages of plastic pipeline

The most a big problem The problem is that the frost resistance of PVC products leaves much to be desired. By lowering the ambient temperature below 15 degrees, you can observe freezing of polyvinyl chloride pipes. This problem forces, during the construction of external sewerage, to pay special attention to the insulation of the drainage structure.

Another problem is the difficulty of connecting plastic pipes with metal counterparts. Cuts or scratches reduce the resistance of PVC pipes to physical activity Therefore, when fastening plastic to metal, it is prohibited to use threaded connections.

And finally, do not forget about the problem of recycling polymer pipes - burning plastic products leads to the release of chlorine into the atmosphere.

Difference between uPVC pipes and PVC pipes

For PVC manufacturing it is necessary to polymerize vinyl chloride. And to obtain vinyl chloride itself, petroleum raw materials and ordinary salt. To obtain polymers with other properties, certain changes are made in the manufacture of PVC products. The exclusion of plasticizers from the composition leads to a more rigid and durable type of PVC, or, in other words, unplasticized polyvinyl chloride (UPVC) - a safe plastic that is better suited than other materials for the production of drainage pipes.

• Due to the action of plasticizers ( chemical compositions liquid or solid form), the bases in contact with it acquire such characteristics as plasticity, softness, ductility, simplified processing and reduced labor costs. But even here you can’t do without negative aspects: plasticizers contain chlorine, which is released into the environment in small quantity. If you do not add a plasticizer, then you can get a strong material that does not enter into chemical reactions with water.

This material was invented in the late 80s of the last century. Nowadays, uPVC is used to make a wide variety of products that require resistance to mechanical deformation - from American football helmets to skateboards. And this is not surprising, because this modification of the polymer is the most durable compared to other types of plastic.

• Resistance to external pressure, stretching and compression is explained by the structure of uPVC molecules. Molecules of other plastics are connected by direct bonds, while the bonds of uPVC molecules after the heating process and further cooling of the primary mass acquire a cross-shaped structure. This is the secret of the special rigidity of the material compared to conventional PVC.

Experts carefully examined uPVC pipes and came to the conclusion that they can consistently last up to half a century. Because of this, external pressure and non-pressure sewers are so often constructed from this material.

• UPVC is often referred to as rigid PVC.

By appearance PVC-u pipes differ in wall thickness, length, color and the presence of sockets.

Classification of uPVC pipes according to GOST

Depending on the purpose of use, uPVC pipes can be divided into three main groups:

• pressure - systems that discharge wastewater using pumping stations;
• non-pressure - in other words, gravity pipelines;
• corrugated – suitable for installation work in hard-to-reach areas.

The thicker the walls of uPVC pipes, the greater their resistance to deformation. According to this property, uPVC products can be classified as follows:

• lightweight SN2 – ring stiffness up to 2 kN/m2 (the depth of the trench for laying the pipeline should not be deeper than one meter);
• medium SN4 – ring stiffness up to 4 kN/m2 (trench depth up to six meters);
• heavy SN8 - ring stiffness up to 8 kN/m2 (up to eight meters, pipelines can be laid under areas where vehicles often move).

By size, unplasticized polyvinyl chloride pipes are divided into:

• uPVC100 ( operating pressure up to 10 MPa) and PVC-U125 (working pressure up to 12.5 MPa) – perfect solution for pressure external drainage system;
• UPVC110 – pipes with a three-layer wall (thickness 3.2 mm), length 1, 2, 3, 4 and 6 meters;
• UPVC160 – three-layer walls, wall thickness 4 mm, length 1, 2, 3 and 6 meters, suitable for the construction of gravity sewers, hardness SN2 or SN4;
• UPVC200 – three-layer pipes, wall thickness almost 5 mm;
• PVC250 – three-wall pipes with a wall thickness of 6.2 mm, equipped with sockets and rubber sealing rings;
• PVC315 – three-layer pipes, wall thickness 7.7 mm.

According to the maximum pressure pressure UPVC products can withstand, they are usually divided into the following classes:

• PN6 – max. working pressure 0.6 MPa;
• PN10 - max. working pressure 1.0 MPa;
• PN16 - max. working pressure 1.6 MPa;
• PN20 - max. working pressure 2.0 MPa.

Features of polyvinyl chloride pipes of different colors

Almost every residential or industrial facility has a sewer system. Sooner or later, a question may arise related to the renewal and replacement of polymer pipelines, and it is no secret to anyone that independent procurement of materials is not an easy matter. And here it is important to understand that color palette sewer pipes depends on their area of ​​application.

Today manufacturers offer polymer pipes different colors. The existence of color differences is explained by the desire of manufacturers to make life easier for people by unifying their products, which simplifies the process of purchasing the necessary materials.

Let's consider the main purposes of this or that color:

• Gray and white pipes are intended for servicing internal sewer networks. The most common color. Not suitable for external sewer networks due to their technological parameters.
• The material for the production of black pipes is polyethylene. Products of this color are known for their versatility. But they have their own drawback - straight Sun rays they get very hot.
• Drainage outlets are usually constructed from green pipes.
• And finally, red sewer pipes, characterized by increased rigidity, are used for laying the external pipeline. We will dwell on products of this color in more detail.

Red PVC sewer pipes with 110 or 160 millimeters are much more resistant to temperature changes and aggressive reagents than products of other colors. The same can be said about their durability. In the manufacture of these products, polymers with an improved structure are used. The wall thickness of these pipes is almost twice as large, which is why they are so reliable.

Red pipelines are able to withstand high operating pressure, which makes them indispensable in the construction or repair of external pressure drainage systems. It is very important that the red polymer is perfect for use in winter period, where it can easily withstand any load, both internal and external (atmospheric and ground pressure). For example, PVC110 or PVC160 pipes can be safely laid in a trench several meters deep. But green or gray polymer pipes at such a depth crack and collapse relatively quickly. Low temperatures over time do not affect the strength of red pipes. On the contrary, they tolerate low or very high temperatures very well.