This article discusses in detail the features of products such as PVC pipes for sewage: the size and price of plastic elements and additional components used to install the drainage system. In the text you can find the classification of pipes, their advantages and disadvantages, as well as an overview of the catalogs offered by building stores. This information can be used to select and purchase PVC products to complete the installation of a sewer.
Features of pipes for PVC sewage: types of components, photos of products
Sewage is constructed on the basis of pipes, which are an integral part of the system. During operation, these elements are subjected to static and dynamic loads, therefore, the choice of products should be approached thoroughly and pay attention to technical characteristics.
Polyvinyl chloride products are widely used for arranging both internal and external sewage systems. Among other polymer products, they are considered the most popular and in demand. These plastic articles of cylindrical shape are made on the basis of a polyvinyl chloride thermoplastic. This material has one advantageous property, due to which PVC pipes acquire improved characteristics. The fact is that a polyvinyl chloride thermoplastic after thermal processing and extrusion procedures keeps its shape well.
According to GOST 51613-2000, PVC non-pressure pipes for sewage are tested for impact strength according to the Charpy system. The maximum allowable 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 the standard dimensions of plastic pipes for sewage, as well as the maximum deviations from the parameters that are permissible in high-quality products. Polyvinyl chloride contains two components – stabilized chlorine and ethylene. In order to improve their performance, manufacturers add various additives to thermoplastic blends. As a result, under the influence of high pressure, a composite compound is obtained with a high margin of safety.
Polymer products have many advantages. Manufacturers endowed plastic pipes with low weight, while maintaining a fairly high level of strength. The cost is available for most buyers, so consumers prefer this type of product.
Among the most important advantages can also be attributed to the beneficial performance characteristics. The inner walls of polymer pipes have a smooth surface with an insignificant presence of longitudinal strips and waviness, therefore the probability of formation of blockages caused by accumulation of fecal fractions or growths is extremely low. Plastic is not susceptible to corrosion and is resistant to aggressive media.
For the construction of pressure sewage PVC pipes are ideal. Moreover, the installation of the system can be done by hand. This does not require the use of special equipment. A wide variety of sizes and mounting elements are on sale, which greatly simplifies the design and installation of pipeline routing.
Products designed for laying outdoor sewage, inherent frost resistance. The term of effective operational service of the pipes made on the basis of polymers exceeds 50 years. If you strictly comply with the requirements of the installation technology, the sewer line will not be offset. Docking nodes often diverge when the groundwater level changes. But if in the process of installation there were no violations, even in such conditions, the system of polymer pipes remains tight.
Important! Under the influence of ultraviolet light, the performance of the pipes is reduced. Therefore, it is not recommended to store products in places where they will be exposed to direct sunlight.
The range of plastic products is very wide, so that consumers can buy plastic pipes for sewage of any modifications and purpose. Given the purpose and operating conditions, there are three categories of elements for the construction of the highway.
All of them are in full compliance with the main standard sizes. Products with a lightweight construction (SN-2) are used for laying sewage in the area of the pedestrian pavement. The scope of their application extends to recreation areas with greenery, as well as areas that are not subjected to traffic loads.
Pipes with averaged parameters (SN-4) are laid in areas where there is a small traffic flow. Especially for industrial areas, heavy type pipes (SN-8) are provided. These products are suitable for the organization of sewer system in places with high traffic flow.
In addition to direct pipes for sewage construction, connecting elements are used. With their help, you can organize turns of the line (fittings, complete with rubber seal). Also on their basis are formed connections of the toilet bowl with sewage from plastic pipes or joints between other elements.
The following types of adapters are available:
- couplings for network maintenance;
- reductions connecting elements with differences in section size;
- tees and crosses for forming the wiring of several pipes;
- rotary bends;
- compensatory connections for repairs.
In addition, in the shops you can buy plastic hatches for sewage, to carry out an audit. These elements are also used for servicing the system when blockages occur.
The most sought-after diameter of PVC sewer pipes is 110 mm. Such products are easy and do not cause difficulties during installation. Pipes intended for the construction of an outdoor system may have a two-, one- and three-layer structure. The outer layer is made of not plasticized PVC. In three-layer products, the inner layers are made of foam material having a porous structure. It is a recycled product.
The connection of the pipe walls is carried out simultaneously using the “hot” technology. The result is a cylindrical product with a monolithic structure. Due to the cavities that form between the walls, it is possible to reduce the weight of the pipe.
Classification of products according to the ring stiffness class:
- L – light products, which are laid at a depth in the range of 80-200 cm.
- N – medium-stiffness pipes designed for installation at a depth of 2-6 m.
- S – rigid products with a large wall thickness that can withstand loads at a depth of 8 m.
Helpful advice! For the organization of the outdoor system, it is recommended to use double-layer pipes with a corrugated structure. Due to the presence of stiffeners on the outside increases the strength of products.
Ring stiffness is marked with the abbreviation SN. The technical parameters of pressure pipes and components for systems where the movement of waste is carried out by gravity are completely different. In each case, the sewage system is subjected to different loads: pressure pressure or the influence of gravity. For this reason, the prices of sewage plastic pipes of pressure type are significantly higher than those of elements for gravity flow systems.
Pressure pipes are presented in three variations, able to cope with the influence of pressure of 10, 6 and 12.5 kg per cm ?.
For the construction of external and internal sewage, products of different sections are used.
Typical sizes of diameter of plastic pipes for sewage:
- 110 mm – the minimum size of the cross section for outdoor pipes, are used for diversion of waste in the suburban areas;
- 315 mm – products with such a section are intended for the construction of a common sewer system serving several houses;
- 630 mm – pipes with the maximum size of the section for the construction of a highway capable of serving a small village.
In addition, to work with an external system you will need to buy a hose for pumping sewage, made of polyvinyl chloride.
Fecal hoses prices:
|Pedrollo TR (10 m)||1650|
|Omnigena (100 m)||2500|
|Aqua Planet Group (25 m)||2870|
Pipes for outdoor sewage are made in orange color, so they can not be confused with other variants of products. Cylindrical elements can have different lengths. The most popular segments are 0.5, 1 and 2 m. There are other variations, for example, 3 m and 6 m. Some manufacturers have an extended size range. They offer individual elements with a length of 12 cm.
The average prices for PVC products class SN 4 for outdoor sewage:
|Diameter, mm||Product length, mm||price, rub.|
Pipes intended for arranging the internal system of taps are made in gray. They have a low price, since these products are characterized by a light class of rigidity and are completely unsuitable for outdoor work. The most popular for sewage PVC pipe 50 mm in diameter. Although on sale there are also other sizes of sections – 32, 40 and 110 mm.
The inner walls of gray pipes are smooth. The elements are connected to each other according to the “socket” technology. The length varies from 25 cm to 3 m, although there are also non-standard sizes.
Note! The branch connecting the plumbing to the vertical pipe should correspond to the diameter of the riser. It is not allowed to use a smaller section.
For the construction of the drainage system in the bathroom is recommended to use pipes with a cross section of 75 mm. They are suitable for connecting a shower stall, bidet and washbasin with a common sewer. They are characterized by a fairly high throughput.
For domestic waste there will be enough products with a diameter of 50 mm. They are light, flexible and resistant to high temperatures (hot water) and the effects of chemicals (in case of chemical cleaning of the system). To connect the toilet better to take products with a cross-section of 100-110 mm. They will withstand strong pressure, since they have a special resistance.
Sizes and prices of PVC pipes for plumbing in the room:
|Diameter, mm||Product length, mm||price, rub.|
Fittings are used in systems where the temperature of the effluent does not exceed 80? C. The products also withstand short-term discharge of waste fluid with a temperature of up to 95? C.
In this case, drains means:
- Dirty water from the toilet.
- Waste fluid from the shower stall and sink.
- Chemical compositions with a pH level in the range of 2-12.
The following parts are used for domestic sewage:
- couplings (with an emphasis, full bore for repair);
- revisions with cover;
- tees (with an angle of 90, 67, 45?);
- two-plane crosses (with an angle of 90 and 45?);
- single plane crosses (with an angle of 90 and 45?);
- taps (with an angle of 45, 30 and 90?);
- compensation pipes.
A set of fittings for an external sewer system looks almost the same way, although it does not do without certain differences.
For outdoor sewage apply the following parts:
- standard taps (with an angle of 30, 15, 45, 90 and 67?);
- double-bell bends, complete with rubber rings on both sides;
- standard couplings;
- standard and three-socket tees (the latter with a 90? angle);
- single plane crosses (90?);
- check valves, mounted horizontally with a slope of 2 cm per 1 m length;
- two-knee siphons.
Average prices for connecting elements for the outdoor system:
|Item type||Diameter, mm||Angle,?||price, rub.|
The sewage system in old buildings was predominantly cast iron. Despite the practicality of this material, sooner or later it needs to be replaced. For the construction of modern risers used more durable and lightweight materials.
Helpful advice! When replacing the pipeline, you can organize ventilation, which was absent in the old type systems. Thus, it will be possible to eliminate unpleasant sewage odors that can penetrate the premises.
Experts recommend even to abandon the use of galvanized and steel pipes, the term of which is not more than 10 years, and to give preference to polyvinyl chloride or polypropylene products. Shelf life of elements from polymers is 30-50 years.
To dismantle the old sewer will require the following tools:
- large screwdrivers to get small parts out of the system;
- grinders with a disc for metal;
- plastic film to block the opening of the pipe at the cut;
- nail puller and chisel;
- personal protective equipment (glasses, gloves, apron);
- hammer and hammer drill;
- scrap and grinder.
First you need to mark the necessary indents. The first label is placed at a distance of 10 cm from the ceiling, and the second – at a distance of 80 cm from the tee. In the marked zones it is necessary to make the saws with the help of a grinder, half a cross-section of the pipe. Attach a chisel to the top cut and strike with a hammer.
A similar procedure must be performed from the bottom. It is necessary to apply force to the blow with a hammer so that the cast-iron pipe splits and the middle part can be removed.
The pipe section going from the ceiling must be closed with a 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 catcher. These tools are necessary in order to loosen fixation zones. When this is done, you can remove the fitting. In some cases, do not do without the use of perforator. It allows you to remove the cement fixing fasteners.
It is allowed to use a screwdriver or chisel, with which you can break off cement. After that, the tee is removed. If it was not possible to perform this procedure, you can use a grinder equipped with a disk designed to work with metal surfaces to cut the fitting. At the same time, it is necessary to retreat from the socket about 3 cm. Dismantling the connections, you should thoroughly clean the areas of their placement from dirt and then treat the surface with a grinder.
Helpful advice! Before you begin, be sure to notify your neighbors, because during the replacement of the pipeline can not use the bathroom and bathroom. Otherwise, water from the upper floors will flow into the room and flood the neighbors below. For the same reason, all work should be carried out as quickly as possible.
For installation, the following tools and materials are required:
- pipes with a size of 110 mm;
- discharge tee;
- rubber cuffs for sealing and fixing the fasteners between the PVC pipe and the scraps of the cast-iron system;
- a nozzle that provides a transition from a cast iron pipe to a plastic one and vice versa;
- pipe fittings;
- soap, which will be used as a lubricant to facilitate the installation of fasteners;
- vertical building level.
The installation process of plastic pipes is carried out in a similar way, only in the reverse order. Rubber seals should be inserted into the sections of the cast iron pipes. The adapter is installed on top, below you need to install the tee. Fixing of all elements should be as dense as possible to ensure the tightness of the sewer system. If the tee in the connection runs freely, it can be sealed with the help of linen winding or silicone-based sealant.
|Name of service||price, rub.|
|Installation of sewage pipes PVC (F32)||210 (mp)|
|Installation of sewage pipes PVC (F50)||260 (mp)|
|Installation of sewage pipes PVC (F100)||320 (mp)|
|The organization of the assembly site for sanitary equipment||350 (pieces)|
|Arrangement of withdrawal under tehn.nuzhdy||800 (pieces)|
|Installation of a toilet bowl with floor type of placement||1550|
|Installation of a bidet with floor placement||1550|
|Installation of a suspended toilet||2100|
|Installation of bidet hanging type||2100|
|PVC replacement riser||2250 (floor)|
|Installation of PVC pipes in rooms with a ceiling height of more than 2 m||+10% of the cost of work for mp|
PVC-based sewage systems today are considered the most practical, convenient and affordable among other options. Regardless of whether the installation is done by a professional or by the apartment owner’s own efforts, the result fully justifies the costs. If all the requirements of the installation technology are maintained, such a system can last for more than half a century.