Fitting - what is it? Classification, instruction on selection and selection

When laying water supply and heating systems, fittings are used, which are presented today in a large assortment. They are used for connection at points of rotation, branching and transitions. These elements are irreplaceable when connecting pipes of different diameters. These nodes can be designed for polypropylene pipes or metal-plastic systems.

Classification of polypropylene fittings

If you needed a fitting, what is this device, you must know. These elements allow you to build systems with a large length, allowing you to provide transitions and turns. If we are talking about polypropylene fittings, then they can be classified in form. Different types of such elements can form angles, among them one should distinguish:

• Clutch;
• Corner;
• tee;
• Cross;
• adapter;
• "American woman";
• collector;
• Bypass.

Pipelines are connected with the help of shaped parts, their material should be the same as the pipes themselves. If the system consists of fiberglass reinforced lines, other types of products can not be used.

Polypropylene fittings reinforced with fiberglass can also be used. As an exception, a combination of polypropylene products with a metal or other materials. In this case, you can use a threaded element type "American".

Classification by location

PVC fittings can also be subdivided by their location. In this connection it is necessary to distinguish the shaped parts:

• Straight lines.
• T-shaped.
• Y-shaped.

Classify the fittings can also be a type of connection, they can be welded or compression. Crimping variety is implemented in a ready-made kit, it is not necessary to additionally collect it. If we compare it with a welded joint, then the first has advantages. The key advantages are:

• Ease of installation;
• No need for welding;
• The possibility of installation in all weather conditions, since crimping polypropylene fittings are not afraid of exposure to negative temperatures;
• No need for skills to collect the crimp fittings.

How to choose welded fittings

In a large assortment, a fitting is now on sale. What is and where this element is used, you can find out if you read the article. In the role of one of the simplest fittings is a coupling, which is necessary to connect the two ends of the pipeline. It can be used for welding reinforced and conventional pipes.

These works are carried out by the bell method. But among the shaped parts, you can also highlight corners, collectors, and tees. When choosing a tee, you need to pay attention to the fact that it can be transient or simple. In the first case, you can make the transition to a different diameter.

Additional advice on choosing

If it is necessary to lay a hot or cold water supply system, you should choose a collector that can be used to connect several collectors to a heat source. Sometimes it is supplemented by ball valves, which reliably protect against corrosion.

When the home master needs a fitting, what is it and what kinds of it happens, he must certainly know. For example, to move the pipeline by 90 ° you need a corner. Its welding is carried out by the bell-like method, these works assume the heating of the elements and their connection by inserting one into the other.

Classification of steel fittings

Steel fittings can be divided by purpose, they are represented by:

• Couplings;
• Tees;
• Fittings;
• Adapters;
• Plugs.

At the place of use, they can be classified into intermediate and connecting. If we are talking about the need to connect pipes of the same diameter, then use direct nodes, otherwise you need to stock up the transition parts. They have a threaded connection.

By the method of connection, steel fittings should be divided into:

• Compression;
• Press fittings;
• Push-fittings;
• Crimp;
• Threaded.

If you need a fitting, what is this design, be sure to find out. For example, threaded parts are the traditional way of joining elements. But compression fittings today are the most popular, because they are easy to install. They can be used to connect pipes from different materials. The universal method is the axial fittings, which can be used for different types of pipeline.

Instructions for the selection of threaded fittings

Threaded fittings can be made of different materials. If it's brass, then before you are the elements that are today the most common. The presence of the clamping ring ensures tightness to any joint. If you want to achieve anti-corrosion properties, then you should choose fittings with a coating, which is necessary when working with a water pipe.

If you want to purchase an item at an affordable price, copper fittings should be preferred. They are not rusted and remain functional for a long time. If you want to change the direction of the medium in the pipeline, then you must purchase the threaded fittings. But to create a point of separation of one stream into several it is possible to prefer a tee.

If it is necessary to create the connection of two pipes into a single system, couplings should be used, this element is an excellent choice for equipping the pipeline with different materials. In this case, you can connect the plastic pipe with a copper pipe. Fittings for copper pipes can also be made of a similar material. For example, plugs can seal the system and close the end of the pipe. Sometimes this part is used not only as functional parts, but also as a decorative element.

Choosing fittings for copper pipes, you should prefer those that are made of the same material, because they are the most durable, easy to install and reliable. To improve their characteristics, they are covered with special materials, among them:

• nickel;
• chromium;
• zinc.

Prices of fittings

Prices for PVC fittings will vary depending on the purpose of the element. For example, glue "American" will cost 119 rubles, while a lightweight glue "American" costs 105 rubles. Glutinous lowering bushing costs 16 rubles, but the stub is 13 rubles.

If you need PVC fittings, the price of them should interest you. For example, the collector will cost more, its cost is equal to 804 rubles. But the cross is 91 rubles. Adhesive clutch will cost 16 rubles. Reducing adhesive clutch is 33 rubles. Plastic fittings are presented today in a wide range, among others, there is a lowering tee, its price is 37 rubles. The angle of 90 ° is only 9 rubles. a piece.