Pipe plug - scope of use

13-03-2018
Instruments

Products such as metal plugs for pipes perform several functions in a pipeline. They can be installed both for technological and aesthetic purposes and are very important parts of any pipelines.

Below we will understand in which cases these products are used and the features of their installation.

The photo shows the different sizes of metal plugs.

When to use caps

The cap for sewer pipes is necessary in the following cases:

  1. In order to prevent foreign objects from getting into the pipes. This is necessary when arranging the layout. In the event that shut-off valves can be installed on the water pipe, such pipes should be turned off.
  2. In the implementation of the dismantling of some sections of pipelines. Here the plug for water pipes allows you to disassemble the individual branches of the system without disturbing the integrity of the main highways.
  3. Pneumatic, which is used in case of accidents on communications for various purposes. This may be a plug for a gas pipe or for a branch of the water supply system.
  4. All kinds of decorative and protective caps that are used in furniture production, when installing fences, that is, everywhere where pipes can be used.
Plastic protective elements for furniture legs.

Types of plugs, depending on the scope of their application

Today there are quite a large number of types of such protective elements.

Pay attention to the main ones:

  1. Threaded. The most common type, which can be found in almost every home. They are installed on both water and gas networks for domestic purposes. Most often, such parts are made of steel, but there may be options from other metals, equipped with pipe threads, which can be not only internal, but also external. They are most often installed on pipelines of small diameters (up to 2 inches).

Note! When assembling such elements, the joint should be sealed with FUM tape or linen underwrap. The latter option is considered more reliable, since even with the slightest return stroke of a stub with a FUM tape there is a high probability of leakage. The use of sealant is not recommended, since it makes it difficult to remove the plug in the future.

Threaded fitting.
  1. Flanged, which can be used on pipes with a diameter of more than two inches. They are flanges without holes, which are connected to the pipe by bolting. As gaskets, ordinary rubber is used (for cold water supply) or paronite for hot water systems.
  2. Spherical, used in critical networks with a working pressure not exceeding 100 atmospheres.
Spherical plug.
  1. Pneumatic, which allow in short periods to disconnect the damaged sections of the pipeline. Sometimes they are also called "inflatable plugs for pipes", since such products are rubber and increase in volume during air injection.

Features of mounting pneumatic plugs

Rubber pneumatic plug installed on pipelines for repair purposes.

Its installation is not particularly complex, but still has its own nuances, which will help you understand the following instructions:

  1. First, the damaged pipe section is removed.
Dismantling the damaged area.
  1. By the size of the line is cut technological hole.
  2. In that case, if the cutting was carried out with the use of welding, then the edges of the opening must be cooled.
  3. Through the resulting opening set in the trunk stub.
  4. Now air is injected into the product, and, expanding, it effectively closes the cross section of the pipeline.
Air injection into the installed structure.

Note! Such products allow you to operate the main highway, while performing work on damaged areas.

Decorative and protective plugs

Protective and decorative plugs for profile pipes are not used in pipelines, and differ mainly in the material of manufacture.

View Purpose
From plastic These are the most popular decorative pipe plugs. They are most often used in furniture production. At the same time, such nozzles are no longer designed to protect pipes, but to protect the finishing of a room.

They do not give the ends of the pipes from which the legs of various furniture are made to scratch the floor covering. They also give the furniture attractiveness and completeness.

Among these products are often found and plugs for square pipes.
From rubber They are not as common as plastic counterparts. Their main function is protective. They are used in the event that it is necessary to prevent the ingress of moisture and debris into the pipe. The strength is much inferior to their polymer counterparts, but their price is much lower.
Steel plates The simplest option is a metal plate that is welded to the end of the fence post. Most owners of suburban areas make such plugs for shaped pipes with their own hands. After welding, the plate is cut to the size of the pipe and polished.

Plates protect pipes from moisture inside. But, since they do not have any decorative attractiveness, often figured decorations of various kinds are welded on top.
Plate welded to the pole.

Conclusion

The undoubted advantage of modern modular communications is the use of plastic caps-plugs. Such elements make it possible to have access to branches that were previously simply brewed (see also the article Pipe D16t: standard and material features).

Now, if it is necessary to carry out any transformation of the pipeline, it is sufficient to simply remove the cap from the branch.

More interesting information can be found in the video in this article.

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