How to connect two pipes

When repairing and replacing a pipeline, the connection of two pipes is of primary importance. Modern construction technologies suggest sparing methods of joining, i.e. without using a welding machine. This way of working greatly simplifies the task and allows you to connect independently in a short period of time. In this article we will talk about how to connect two pipes.

Welding? Last century

Why do many experts recommend connecting the pipeline without welding? Consider the main reasons for abandoning the traditional method:

• Welding has a relatively high cost. It is not always advisable to use professional welding equipment for small amounts of work. In this case, the cost of welding will far exceed its effectiveness.
• The difficulty of implementation. It is no secret that many construction works are carried out in difficult conditions. So, a rather cramped room, the absence of a power line, and the high humidity of the room do not allow us to use the welding method.
• Lack of mobility. In situations of increased danger, such as an accident or a breakthrough, it is necessary to act as quickly and efficiently as possible. To prepare welding equipment for work and to invite specialists, a considerable amount of time is required. In an extreme situation, this can lead to sad consequences.

We connect the pipes correctly

So, how to connect two pipes with a modern method? It is necessary to consider the main types of pipes used. They can be performed:

• from flexible materials. These include polyethylene, PVC, polypropylene, plastic, etc.
• from hard materials. Among them are metal, cast iron, steel, etc.

Depending on the type of materials used, different connection technologies are used.

Methods for connecting flexible pipes

Modern pipes of flexible materials are available in various shapes and sizes. A large variety of their structures allows to facilitate the installation process as much as possible and to lay pipes in hard-to-reach places.

Special materials are used to connect two flexible pipes - fittings. The process of pipe fastening with the help of fittings is quite simple and resembles the children's game “designer”.

Fittings are used for fastening and connecting pipes. There are several modifications. So, connecting parts, extension cords, turn parts, tees, etc. are used.

Fittings in the shape of the structure can be performed:

• in the form of the letter "G",
• in the form of a straight pipe,
• in the shape of the letter "T".

The choice of a particular shape depends on the type of pipe connection required.

Preparation for work

You must first make a work plan and calculate the required amount of building materials:

• On a sheet of paper, draw all the plumbing fixtures available in the room.
• Mark the central pipe stand and connect it with lines to the main plumbing fixtures. The resulting connection lines will mean the pipeline.
• Mark the joints and corners. Here it is necessary to connect the pipes with fittings.
• Calculate the number of fittings required and the length of the pipes used. Remember that for the sewage system it is necessary to purchase pipes with a diameter of 11 cm. For a regular pipeline - 5 cm.

Plastic pipe connection

1. It is recommended to start work from the bathroom and move to the main riser.
2. We attach a swivel fitting to the sanitary device. It is necessary to attach a sewer hose on one side and a plastic pipe on the other.
3. Other pipes are joined with tees.
4. If you are faced with the problem of connecting pipes of different diameters, use a fitting with an adapter function - gearboxes.
5. When working, follow the basic rules of slope, which will ensure the natural outflow of fluid.

This video shows how easily a compression fitting can be put on the pipe:

Methods for connecting metal pipes

Consider how you can connect two metal pipes. To work with them, special devices are also used - couplings. But they have higher strength, are made of rigid materials and equipped with special fasteners.

Tip! Experts recommend purchasing clutches from manufacturers - global market leaders. These include companies from France, Sweden and Switzerland.

Couplings are used for repairs in the pipeline system and for connecting its parts.

Modern couplings are made of quality materials. It allows to fasten among themselves the pipes made of various materials and different diameter.

In addition to the coupling, one should also note the threaded and flange connections. Compared with the coupling connection, they have lower strength, but are in a more acceptable price range.

• When threaded, metal pipes are simply screwed onto each other. This process does not require the use of additional equipment; however, it is rather complicated for execution in the conditions of city apartments.
• Flanged type of work involves the docking of pipes with flanges. They are fixed with special bolts.