Rehau fittings: variations and mounting methods

To date, fittings are presented in a wide range. Manufacturers annually produce a large number of models. In the manufacture of the product resorted to steel, brass or bronze raw materials. You can also find models that are made from materials such as polymer or rubber. Each material has its own characteristics, distinguishing it against the background of other analogues.

For example, a steel pipe is famous for its durability and resistance to any mechanical stress. The polymer product can boast a long service life and relatively inexpensive cost. Rubber pipes are good for installation in the most inaccessible places, as the material involved in the manufacture, allows the product to bend.However, the manufacturer is not interested in selling a product with a standard set of properties. Brands are trying to modernize products as much as possible in order to become leaders. One of these is Rehau - a German company that produces modern polymer fittings of the highest quality.

The popularity of polymer pipes is well deserved. In comparison with other analogues, polymeric or plastic products have a huge number of advantages, valued in the field of pipe-rolling production. Plastic pipe does not deteriorate during operation, retains its functionality, is resistant to high humidity, microbes and external atmospheric influences and perfectly keeps its shape. This product has a relatively inexpensive cost. Reliable enough for widespread use, while you can not be afraid that the pipeline will be destroyed or take any damage.

The German concern Rehau went ahead and launched plastic products and fittings that were made of polymeric polyethylene. Polyethylene refers to thermoplastic ethylene polymers that have been processed under specialized conditions.As a result of the processing done, the manufacturer receives non-hazardous and fairly durable construction polymers, which have cheap cost and strong characteristics. Polymer products are great for installation in a residential or industrial pipeline.

To date, only two types of polyethylene are separated: LDPE and HDPE. For the manufacture of the first type requires a strong heat treatment and pressure. The result is high quality products for installation in water supply systems, but with a fairly high cost. For the second option, a low pressure is used, which leads to the manufacture of a cheaper and more practical product. This polymer pipe is used for installation in sewers.

Manufacturers of different countries annually produce more than a hundred different types of components for a pipeline system, in the manufacture of which a polymer was used. Such diversity is determined by the raw material and the method of combining them. As a rule, the fundamental method of joining pipes and fittings of polyvinyl chloride is an adhesive method, sometimes called cold welding. Under this circumstance, the joining of two pipes is carried out with the help of the adhesive preparation “Tangit”.

To clarify what modifications have occurred in the products of the German manufacturer of fittings Rehau, consider the disadvantages and advantages of the products. The qualities discussed below are attributed to both pipes and fittings manufactured by the Rehau brand. The concern is engaged in a complete set of its goods, which allows the consumer to get everything necessary for future installation work. If necessary, the heating and water supply system can only be assembled from products of this brand.

Of the advantages of Rehau polymer fittings can be noted:

• high resistance to corrosion;
• resistance to elevated temperature, so the fittings are able to withstand temperatures up to one hundred and ten degrees;
• have plasticity, the polymer pipe or fitting is able to maintain the shape given to them earlier;
• it is possible to bend the fitting with your own hands, without resorting to the help of a specialized tool;

• the presence of a smooth passing surface;
• high resistance to external influences (scratches, chips, abrasions, etc.);
• made of ecological material;
• the presence of a long service life (the warranty period of the pipe reaches fifty years);
• easy installation work, practical and convenient operation.

From the above list of advantages, the most important is resistance to high temperatures. The fact is that a large number of polymer models are still not adapted to these conditions. In this regard, polymer models were deformed or became soft, causing the product to become unusable. The presence of Rehau fittings in the form of memory indicates that the product is able to retain its original appearance. For example, flared and calibrated pipe models return to their original form after some time. This allows the fitting to wrap around the pipe more tightly. Thereby, a tight fixation of two parts occurs, which favorably affects the quality of the connected pipes.

German Rehau fittings are produced in huge quantities. A feature of these products is the convenience of installation work. The structural structure of the fitting is made in such a way that even a person who does not possess special skills and knowledge can install on his own.

Fittings are classified into the following three groups: compression (adjustable), crimp and welded. The first group has a rather unique structure. The design of the compression fitting involves tightening the nut, as in any other model. However, the nut must also be unique. It can be adjustable or obkidny format. It is used to tighten two fittings with the help of three ordinary turns that do not require preliminary preparatory work.

Crimp fittings are known for their ability to memorize the original shape. Most often they are used for pressing out pipes from cross-linked polyethylene.And after some period of time, due to its characteristics, crimp fittings help strengthen the final connection. The welded fitting practically does not differ from standard analog. The only requirement is to use exclusively branded polymer components. Components that were purchased in different brands and were made from different raw materials, in most cases do not fit together. Ultimately, this adversely affects the quality of the connection of two parts.

In essence, installation work using Rehau products is not much different from the usual standard procedure. The practicality and convenience of even the smallest products turns the assembly of a separate pipe billet into a single working system. The production of the German concern Rehau is the use of the newest modern technologies and the modification of products in order to increase its functionality and quality.

Installation work carried out with Rehau German products has one interesting feature. The diameter of the pipe at the site where the pressed fittings should be located does not decrease, but, on the contrary, expands.This will require the presence of a special expanding tool, with the help of which the installation is carried out on the site of increasing diameter.

You can find the detailed installation work with Rehau fittings below.

• To begin with, the expansion tools wind the pipe nozzle of the required diameter. In most cases, suitable Rehau Stabil attachment from the same manufacturer. It is versatile and perfectly combined for many fittings and pipes.
• Then the shrinkage rings are pulled onto the surface of the pipes, so that the chamfers of the sleeves are located at the joints. Do not forget that the shrinkage rings should not be in the area of ​​expansion of the connection. Otherwise, it will result in a limitation of efforts, an outstanding expander.
• Next on the pipes are put on dilators, the handle of which must be advanced to the end. Similarly, the product takes the desired shape.

• After that, press-fittings are installed on the expanding area.
• For this, press-fittings must be brought to working condition. In other words, the handles must be retracted and the fuses removed.And only then the installation work on the installation of the necessary nozzles takes place.
• After the above manipulations, the press fitting can be used for its intended purpose. Installation work is carried out on the fittings, which must be pressed into the inside of the pipes.
• Such manipulations are performed on all subsequent parts of the connection.

For details on mounting Rehau fittings, see the following video.