Sewage is subject to wear and eventually needs to be replaced. Products made of PVC plumbing market proved to be on the positive side and displace outdated iron equipment in the near future.
Kinds of PVC pipes
Polyvinyl - an innovative material used for manufacture of pipes and fitting products. It used during the internal and external drainage, gravity flow drain, pressure lines, etc.
When laying of sewer mains are based on manufacturers' recommendations: PVC products for domestic sewage only gray, and for the external arrangement - orange.
The use of PVC products for the interior and a wide range of fittings allow you to create lines of any configuration. Their strength and reliability to cope with the loads occurring in pipeline networks. However, this type is strictly applicable for outdoor use as insufficiently tough.
External PVC pipe is unacceptable to use inside the house, since they are not resistant to high temperatures. The scope of their operation - external communication line. Pipe diameter 100-150 mm allows removal of impurities from various structures. Wall thickness - is the main factor responsible for strength and durability.
For the application portion PVC pipes are subdivided into:
- SN-2 - lightweight version is operated at intervals with small loads, in particular in residential areas and in laying domestic communications systems in the room.
- SN-4 - compacted version used for laying sewer lines under roads, where there is a moderate traffic load;
- SN-8 - a heavy-duty version, designed for urban sewage and for areas with high traffic levels.
When assembling the PVC sewer occupy an important place fittings:
- and cross tees are used for routing;
- turn signals, by which the direction is changed;
- Gear for connecting different diameters of sewer pipes made of PVC;
- tubes - can reduce the influence of linear expansion in the communication;
- couplings, caps, auditing, clamps, etc.
Keep in mind: the smaller the bend, the more economical installation, the design will be more practical.
Important! When handwritten pipelining price will emerge not only from the cost of the main material, but also the auxiliary members, and it is much higher than the price of PVC pipe.
Advantages and disadvantages of PVC products
PVC equipment has several advantages as compared with a metal:
- It is not subject to corrosion;
- It has smooth walls that prevent the formation of precipitation;
- It does not conduct electricity;
- It is not the source of occurrence of hazardous substances;
- sensitive to temperature changes;
- long service life;
- ease of assembly and installation;
- affordable price.
As with any other equipment in PVC systems have weaknesses:
- PVC products used at a temperature below 15 ° C, requiring thermal insulation;
- low level of heat conduction;
- not recommended for use in PVC pipe where operating temperature is above 60 ° C;
- damage reduces the life and resistance to stress.
Important! PVC pipe located in the apartment is not need insulation coating. When the outer lining of communications necessary to insulate and isolate the pipeline.
Specifications PVC pipe
Length, diameter and wall thickness - major parameters in accordance with which determine the size of PVC pipe. The table below shows the standard sizes of PVC sewer pipes and their prices.
Type of sewage |
External ⌀, mm | Inner ⌀, mm | Length mm | Min wall thickness, mm | The average clearance, mm | Max wall thickness, mm | Price, RUR / m |
| internal | 32,0 | 30,0 | 300 3000 |
1,0 | 28,4 | 1,8 | 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 | 1200 3000 |
3,2 | 117,2 | 3,9 | from 229.0 |
| 160,0 | 153,6 | 3,2 | 150,2 | 4,9 | by 2300.0 | ||
| 200,0 | 192,2 | 3,9 | 187,6 | 6,2 | by 3800.0 | ||
| 250,0 | 240,2 | 4,9 | 234,6 | 7,7 | by 4300.0 | ||
| 315,0 | 302,6 | 6,2 | 295,6 | 9,7 | by 3500.0 | ||
| 400,0 | 384,6 | 7,7 | 375,4 | 12,3 | by 10000.0 | ||
| 500,0 | 480,4 | 9,8 | 469,4 | 15,3 | from 14,900.0 | ||
| 630,0 | 605,4 | 12,3 | 591,4 | 19,3 | from 27,700.0 | ||
| 800,0 | 769,2 | 15,4 | 751,0 | 24,5 | 33 000.0 | ||
| 1000,0 | 960,8 | 19,6 | 938,8 | 30,6 | from 71,400.0 | ||
| 1200,0 | 1151,0 | 24,5 | 1126,8 | 36,6 | from 92300.0 |
In accordance with building codes used in PVC pipe diameters:
- 25 cm - for washing machines;
- from 30 cm to 47 cm - for sinks;
- 50 cm - for routing communications in a room;
- from 70 cm to 86 cm - cuttings from the riser;
- from 100 cm to 118 cm - WC;
- 150 cm do190 cm - cut from the riser to the city's communications;
- 200 cm - drain water outlet;
- from 240 cm to 300 cm - removal of the waste water reservoirs, swimming pools, whirlpool;
- from 300 cm to 1100 cm - municipal sewer system.
Note! When laying the sewage system should adhere to the requirements of SNIP, otherwise waste stagnation bodes very unpleasant consequences.
An important role in the implementation and installation of sewage removed the funnel, the main purpose of which is to fast and tight connection. Below is a table in which standard sizes sockets are reflected.
Nominal ⌀ pipe cm |
Inner ⌀ bell, cm |
The length of the socket, see | Installation length, cm | ||
| lengthened | Normal | lengthened | 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 |
Weight of the product of polyvinyl chloride depends on the wall thickness and diameter. However, this figure is several times less than that of identical parameters of metal. The producers are trying to reduce material products without sacrificing strength. Detailed information about the weight of one meter of PVC sewer pipe can be found in the table.
| 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, with the selective information about the pressure relative to the wall thickness can be found by reviewing the table below.
| Diameter, mm | The 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! By purchasing the PVC pipe for drainage, it is necessary to request a certificate of quality for comparing declared and actual output values.
Guide to Buying PVC pipes
A huge variety of PVC pipe often puts the buyer in a difficult position, thus complicating the choice. Before purchasing you need to carefully study the technical and physical properties of the product and to determine the conditions under which it will be applied.
- Strength. Throughout parts of the pipeline may be sagging. This phenomenon may occur when using PVC pipes for sewage with a low density. In such situations, special brackets are recommended.
- Terms of use. While using sewer may at times be reduced in cases where the operating conditions are violated; for example, when a corrosive particles in the conduit.
- The length of the line. Before you design a sewage system is necessary to make accurate measurements in accordance with the linear characteristics of PVC pipes on long straight sections is better to use whole.
- Diameter. At intervals sewer line pipe is used or that section. So, for the drain in the bathroom products are used with a diameter of 50 mm, and when docking to the central riser - 100 mm.
PVC pipes are reliable and practical, therefore, lead plumbing market. Before the sewage should carefully review the specifications and required operating conditions, compliance with which is able at times to increase the service life.
