Types of fittings for polypropylene pipes. What types of fittings and tees are there?

The types of fittings for propylene pipes differ from each other depending on the function performed. Most of them are designed to connect pipes in the same or different directions, including at an angle of 90 degrees. There are also plugs that are installed at the end of the pipe, as well as special attachments to prevent accidents. All common types of fittings and their parameters are described in the presented material.

Types of fittings

There are quite a few varieties of polypropylene fittings, since each element has its own characteristics in terms of installation and function. The main types are as follows:

1. The coupling (adapter) is a cylindrical element, consisting of polypropylene and metal. The coupling can be detachable, straight or transitional. Detachable (American) are equipped with a union nut. In transitional threads, the threads can be located both inside and outside. The sizes of polypropylene fittings of this type can vary greatly - from 20 to 90 mm.
2. The fittings are a design with a union nut and thread. Used for installation to a flexible hose pipe.
3. When considering what types of fittings for polypropylene pipes there are, it is necessary to mention a group of devices. It is represented by angles, water sockets, bends and corners. They come at an angle of 45 or 90 degrees, equipped with internal or external threads. Installed to connect a mixer, position a pipe higher or lower relative to another.Often equipped with a wall mount.
4. Crosses are a typical part, an example of which can be used to understand what fittings for polypropylene pipes are. Placed to ensure the intersection of several pipes. They are used to save space, as well as for a more aesthetic appearance.
5. A tee is a common part that is used to divert polypropylene pipes in one direction or another. Most often they are taken for radiator installation. There are various types of tees for polypropylene pipes - reverse, combined with external or internal thread. There are also parts without threads - they take the pipes away from the main direction at a right angle (90o).
6. Collectors are types of tees with a large number of branches (usually 2-6, sometimes more). They ensure uniform distribution of water in the heating system to maintain the same pressure.
7. Caps and plugs are placed in those places where the pipe ends, i.e. at dead ends. They can simply be put on it or fixed by screwing onto the internal thread.
8. Filters are mounted directly into the pipe to prevent clogging by suspended particles in the water.
9. Check valves are special devices that prevent water from flowing in the opposite direction, which can occur in an emergency (pump failure, water hammer). They are equipped with a nut that can be unscrewed if necessary, clean the valve and put it back.
10. Compensators are loop-shaped fittings. They are also designed to provide insurance in case of an accident (sudden pressure drop, temperature shock).

Considering what types of tees there are for polypropylene pipes, we can mention additional types of fittings.These are auxiliary elements that increase the reliability of attaching pipes to the load-bearing supports of the house.

Technical specifications

Fittings for polypropylene pipes, the photo of which is shown above, differ not only in purpose and size, but also in technical characteristics. When purchasing, you should pay attention to several parameters:

• density - the higher it is, the greater the load the part can withstand, in most cases it is 0.91 kg/cm3;
• the thermal conductivity coefficient should be small so that drops of condensate do not form on the outside of the parts;
• connection strength – ensures long service life, at least 10 years;
• resistance to chemicals, moisture, exposure to sunlight, temperature.

In order for the fastening to be as reliable as possible, it is important to select the correct sizes of fittings for polypropylene pipes. The indicators are standard - they exactly correspond to the diameter. The minimum value is 25 mm, the maximum is 90 mm. Installing fittings is not difficult - they do it during the welding process using a soldering iron with the necessary nozzles.