Today, piping systems made of polypropylene are widely used, because they have many positive characteristics. But for their arrangement and operation requires special fittings, which are called ball valves. About them and will be discussed below.
Description
The crane polypropylene angular also belongs to this variety. Its feature is that such products are designed to shut off the water supply.
The devices are used in hot and cold water supply systems, as well as heating. The case of such products is made of polypropylene, so that the installation of the taps is carried out according to the same technology that is used when connecting polypropylene pipes and other fittings. Their distinguishing feature is high throughput and lack of need for repair and maintenance. It should be noted that such a mechanism should not be used to adjust the intensity of the water flow, since in this case it will fail quite quickly.
Main characteristics
A polypropylene tap is available in many varieties, but the characteristics of the PPRS PN20 tap will be given below. 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 term of operation. If we are talking about the valve of the above modification, then it can be used in piping systems for cold and hot water supply. In the first case, the service life can reach 50 years, but if we are talking about a hot water supply system, then the temperature of the working environment should not be more than 75 ° C, while you can count on a service life limited to 25 years. It is also important to consider the nominal pressure in the system, which should be 20 bar.
For reference
A polypropylene valve has the properties of chemical resistance, therefore it has 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, one can distinguish not only durability and lack of need for maintenance during operation, but also low cost, compact size, and also good tightness. Any master with the help of improvised means will be able to install such a mechanism, however, in addition, a welding machine will need to be prepared. Ease of installation can also be called a significant advantage. Among other things, the device has an attractive appearance, scale does not form on the internal surfaces, and its weight is small. When you choose a polypropylene tap, you should pay attention to the fact that its inner diameter in the valve must correspond to the parameter inherent in the pipeline.
The main disadvantages of polypropylene products
If you still have not decided whether to buy a polypropylene tap, then you should also familiarize yourself with the minuses in more detail, but they are not numerous. As mentioned above, this shut-off valve cannot be used to control the flow - this feature is sometimes a minus for consumers. Among other things, the device cannot be disassembled, so if it fails, replacing it is the main solution to the problem. Shortcomings, although they exist, can not be called critical.
Mounting Features
Cranes for polypropylene pipes are installed according to a certain technology, which provides for compliance with several stages. The first of these is the determination of the location of the product. You must ensure normal access to the crane so that the handle is rotated unhindered. The next step is to choose a model. The main thing is that the thread turns out to be the same, otherwise it will need to be re-cut. When installing polypropylene faucets for heating, it is important to pay attention also to the arrows that are located on the outer surface of the faucet. They are necessary to indicate the direction of water flow.
The next step will be wrapping the thread with fum tape, which will improve the quality of tightness. After that, the valve can be screwed on. The wizard should check to see if anything will interfere with the rotation of the knob. The crane is screwed with a certain effort, if this is not, then an additional layer of sealant should be wound. Screwing on the crane should be accompanied by some effort, while the tape itself will be extruded at the joints.
Methodology
If an open thread turned out to be on the second end of the tap, then it should be wrapped with tape and screwed on the flange from the tap to the pipe - this will achieve the maximum connection density. Next, you need to check the tightness, for which water is introduced into the system. If moisture does not appear at the joints, then everything is in order, you can begin full operation. Do not use gas keys when installing taps ; you need to prepare only plumbing.
Connection using the "American"
"Americans" for polypropylene pipes are thread-bonding devices that can be disassembled and can be used more than once. The advantageous use of such products is the quick installation of even the largest parts in hard-to-reach places, without additional effort. This also applies to repair work during operation.
There are several options where "American" are used for polypropylene pipes. Among them:
- the presence of an internal thread;
- the presence of a union nut;
- external thread;
- a combination of the methods indicated above, in different trim levels.
For such threaded connections, fittings with threads are required. It is impossible to do it yourself on polypropylene pipes. In this case, the sealants and the teflon tape will act as assistants. If, in addition to the polypropylene tap, you want to use the “American” when connecting the pipes, then at the initial stage you need to prepare the latter, cut and chamfer where necessary, and if plastic acts as the material of the product, then calibration should be performed.
The next step is to connect the fitting. The part that is designed for welding is strengthened to it. Then the other side of the connector is fixed and most often it is a thread. The wizard should tighten the fitting to check the quality of work, and if necessary, correct the problems. It is important to make sure that there are no leaks, the union nut should be tightened after that. It is necessary to ensure density in order to achieve complete tightness. If you are not sure about the “American” or you want to play it safe, you can wrap the fum tape onto the nipple thread.
The cost of polypropylene taps
Polypropylene cranes, the price of which is considered quite reasonable, are widespread and presented for sale in a wide variety today. For a valve tap, for example, you have to pay 295 rubles, while a ball valve costs 369 rubles. Polypropylene taps for hot water systems can be purchased for 171 rubles. But the polypropylene crane 20 mm in diameter costs 243 rubles.
If necessary, you can pick up a corner faucet for a radiator with an "American", and if the diameter is 20 mm, then for a unit of goods you will have to pay 147 rubles. When arranging pipeline systems, sometimes there is a need to install a collapsible ball valve with a straight nut. In this case, the product will cost 311 rubles.