How to choose pvc sewer pipes

PVC sewer pipes are designed for installation of sewage systems, drainage and water supply. The popularity of plastic is due to the large number of its positive properties. Before choosing PVC sewer pipes, it is important to get acquainted with their technical characteristics, advantages and disadvantages, as well as the strength criterion.

Main characteristics

PVC pipes are highly resistant to various both alkaline and acid corrosive environments. This property allows to use them for installation of the sewerage. Specifications include a high melting point of 120 ° C, but plastic pipes are not recommended for production.

In living conditions, experts do not advise to exceed the temperature of drained liquids over 70 degrees, so you should be careful when draining boiling water into the sewage system from PVC pipes.

When considering the strength indicators, it is worth noting a rather high coefficient, but at the same time PVC is classified as brittle materials that are afraid of mechanical damage. You should not try to bend the pipes, as they can be damaged in a year or two after operation.

When using PVC pipes for installation of sewage under the road, you must use a box of brick or reinforced concrete.

The hardness of the plastic determines the only significant drawback of PVC pipes - noise during use. This can annoy households, but noise can be avoided by making noise insulation pipes.

Benefits and features

The great popularity of plastic pipes for installation of the sewer system is explained by the presence of such advantages:

  • long operational term;
  • small weight of elements;
  • convenience and ease of installation design;
  • affordable price.

When installing plumbing from plastic pipes, there is no need to use the services of specialists, since all the processes are quite simple and do not require special knowledge. All components of the system (pipes, fittings, transitions) are light in weight, so there will be no difficulties during transportation.

Choice of pipe size

If the installation work will be carried out independently, then it is necessary to select the correct dimensions of PVC pipes: diameter, length, wall thickness.

Modern manufacturers of PVC pipes indicate when marking the outer diameter. If necessary, calculate the internal diameter should do so: from the indicator of the outer diameter to take away the wall thickness (it is also indicated in the marking).

It is the inner diameter that plays an important role in the installation of sewage or drainage from equipment. For example, when arranging a drain for a dishwasher, pipes with an internal diameter of 25 mm are sufficient; for baths, showers, sinks and sinks - 32 mm, for wiring the system throughout the house (apartment) - 50 mm. If the sewage system is organized outside the building, then it is necessary to give preference to pipes with the largest diameter.

The wall thickness directly depends on the diameter - the larger it is, the smaller the thickness, and, therefore, the weight will also be small. According to GOST, plastic pipes can be of different lengths - from 1 to 6 m (1 m step). This will allow buyers to choose the required pipe size.

During the purchase of PVC pipes should pay attention to the presence of GOST, marking, evaluation of indicators after the test. Original packaging must also be present.

Strength criterion

Another important criterion that must be considered when choosing plastic pipes for the organization of sewage and sewage disposal, is the hardness class. Thus, each type of pipe is designed to perform a specific type of work in certain conditions. To install the drainage system inside the house, you can use pipes with a lower indicator of strength, and outside only the strongest pipes are used.

To facilitate the process of choosing PVC pipes by the consumer, manufacturers use various dyes. Internal sewage is painted gray, and external - brown and orange.

When laying the external sewage system, the degree of load is also taken into account, for example, for a private area, the class SN2 is suitable, if you have a car - SN4, if it is an industrial facility or the road is SN8.


To familiarize yourself with all the recommendations of experts regarding the choice of pipes for sewage installation, you need to watch the video:

Add a comment