Polypropylene crane: description, advantages and disadvantages, installation

Today, pipeline systems made of polypropylene have found their wide distribution, because they have a lot of positive characteristics. But for their arrangement and operation special fittings are required, which are called ball valves. They will be discussed below.

Description

Polypropylene corner crane also refers to this variety. Its peculiarity is that such products are designed to shut off the water supply. The devices are used in systems of hot and cold water supply, as well as heating. The body of similar products is made of polypropylene, thanks to which the installation of cranes is carried out using the same technology used for connecting polypropylene pipes and other fittings. Their distinctive feature is high throughput and no need for repairs and maintenance. It should be noted that such a mechanism should not be used to adjust the intensity of the water flow, because in this case it will quickly fail.

Main characteristics

Polypropylene crane is on sale in a variety of varieties, but below are the characteristics of the crane PPRS PN20. The range of its operating temperature can range from 0 to 95 ° C, while the nominal diameter is 20.63 mm. Quite often consumers are interested in such a question as the period of operation. If it is a tap of the above-described modification, it can be used in cold and hot water supply systems. In the first case, the service life can reach 50 years, but if it is a hot water supply system, the temperature of the working medium should not be more than 75 ° C, while you can count on a service life limited to 25 years. It is also important to take into account the nominal pressure in the system, which should be 20 bar.

For reference

Polypropylene crane has the qualities of chemical stability, so it found its distribution in conditions not only of domestic pipelines, but also of industrial systems, in particular, it is used in pipelines whose internal surfaces are in contact with acids.

Main advantages

Among the advantages of the described products can be distinguished not only the durability and the absence of the need for maintenance during operation, but also low cost, compact dimensions, as well as good tightness. Any master with the help of improvised tools will be able to install such a mechanism, but in addition it will be necessary to prepare a welding machine. Ease of installation can also be called a weighty advantage. Among other things, the device has an attractive appearance, the internal surfaces do not form scale, and its weight is small. When you choose a polypropylene tap, you should pay attention to the fact that its internal diameter in the gate should correspond to the characteristic peculiar to the pipeline.

The main disadvantages of polypropylene products

If you still have not decided whether to buy a polypropylene tap, you should also learn more about the minuses, but they are not numerous. As mentioned above, this valve can not be used to regulate flow - this feature is sometimes a disadvantage for consumers. Among other things, the device can not be disassembled, so if it fails, replacing it is the main solution to the problem. Disadvantages though exist, but they can not be called critical.

Mounting Features

Cranes for polypropylene pipes are installed by a certain technology, which provides for compliance with several stages. The first of these is the location of the product. To the tap, you must ensure normal access so that the handle can be rotated freely. The next step is to choose a model. The main thing is that the thread is the same, otherwise it will need to be re-cut. When installing polypropylene cocks for heating, it is important to pay attention to the arrows, which are located on the outer surface of the faucet. They are necessary for indicating the direction of the water flow.

The next step will be winding the thread with a ribbon, which will improve the quality of the seal. After that, the tap can be screwed. The master should check to see if there is anything to stop when turning the knob. The crane is screwed with a certain force, if not, then an additional layer of sealant should be wound. Screwing the crane should be accompanied by some effort, while the tape itself will be squeezed out at the joints.

Methods of work

If the open end of the tap is an open thread, then it should be wrapped around the tape and the flange from the tap to the pipe - this will allow you to achieve maximum connection density. Next, you need to check the tightness, for which the system starts up water. If there is no moisture in the junctions, everything is in order, you can start full-fledged operation. Do not use gas switches when installing cranes , you only need to prepare sanitary.

Connection with the help of "American"

"American" for polypropylene pipes are threading devices that can be disassembled and can be used more than once. The advantageous use of such products is the rapid installation of even the largest parts in hard-to-reach places, with no additional effort to apply. This also applies to repair work in the process of operation.

There are several options, where "American" for polypropylene pipes are used. Among them:

• Presence of internal thread;
• Presence of a union nut;
• External thread;
• A combination of the methods mentioned above, in different configurations.

For similar threaded connections, fittings are required where there is a thread. Do it yourself on pipes made of polypropylene is impossible. In this case, the assistants are the sealant and Teflon tape. If besides polypropylene tap you want to use "American" when connecting pipes, then at the initial stage you need to prepare the last ones, cut and remove the chamfer, where necessary, and if plastic is the material of the product, you should perform the calibration.

The next step is to connect the fitting. It is strengthened by the part that is designed for welding. Then the other side of the connector is fixed and most often it is a thread. The master should tighten the fitting to check the quality of the work and, if necessary, correct the malfunction. It is important to make sure that there are no leaks, then the union nut must be tightened afterwards. It is necessary to provide density in order to achieve complete tightness. If there is no confidence in the "American" or you want to be reinsured, then you can rewind the fuselage thread on the choke thread.

Cost of polypropylene cranes

Polypropylene cranes, whose price is considered quite democratic, are now widespread and are presented for sale in a wide variety. For the faucet-valve, for example, you have to pay 295 rubles., While the ball valve costs 369 rubles. Polypropylene cranes for hot water systems can be purchased for 171 rubles. But the polypropylene crane of 20 mm in diameter costs 243 rubles.

If necessary, you can pick up a corner cock for the radiator with an "American", and if the diameter is 20 mm, then per item you have to pay 147 rubles. When installing pipeline systems, there is sometimes a need for a collapsible direct ball valve with a union nut. In this case, the product will cost 311 rubles.