For connection of metal-plastic pipes special devices are used, called fittings. They come in different configurations and provide connections along different axes: along a line, at a right angle. Compression fittings are very popular among masters.
The device and the principle of connecting the fitting
The device is simple - the union, the nut and the ring. Working with such connections does not require qualification or a special tool. All operations are performed with a wrench. Such fittings are attractive in that, apart from the simplicity of installation, they are suitable for dismantling. Although this is undesirable, since later it will be necessary to change the gasket, but in this sense they are convenient, especially since gaskets are not a deficit. And for any work on the installation of a pipe system, you have to change something while you are working.
If a part of the pipeline is damaged, in practice it is removed( cut out) and put a new "knee", connecting it in the system with the same fittings. This is done in order to avoid dismantling the previously installed ones( however, this option is not always available).Then it is necessary to disassemble.
Connecting pipes with
fittings Before connecting the pipe, its end is cut off strictly perpendicular to the longitudinal axis. It is best to do this with a special tool - a pipe cutter. Nevertheless, as I said, the special.the tool is not necessary, and a hacksaw for metal is quite suitable. The main thing - do it carefully, leaving no "shaggy" notches on the pipe. Of course, it's better to use a new blade for the hacksaw, and I would not advise cutting the pipe from metal plastic with an electric jigsaw - it's hardly possible to do it accurately.
When preparing for work, it is necessary to take into account such a detail. Unlike our country( and the former USSR), there is no single system of state standards abroad. We have it, it's all known GOST).Each firm - manufacturer has and respects its own standards, and often they do not match. Therefore, when you buy the necessary components, pay attention to ensure that the pipes and fittings are from the same manufacturer.
If this condition is not feasible, then acquiring fittings, you need to have a small sample of the pipe - to compare the diameters and the thickness of the walls. Plus, there are still on the market of such products and all-in-one types of fittings, this also needs to be remembered.
And the last thing on which we will stop today in this article of the blog Best houses. Before joining the pipe, its end should be leveled, cut as it was said( perpendicularly) and make a small chamfer for a smoother connection between the pipe and the union. The inner part of the end of the pipe must be treated( remove the barbs after the sawing).
After that, the pipe is put on the nut, then the ring. After this, the end of the pipe is put on the union. Only the hand( without the help of a wrench) the nut is screwed onto the union, it must go for a while on the thread. If not, then it turned out to be skewed. And at the very end of the nut "is" already key. Just do not forget that the pipe is made of plastic, so the booster should be soft.
We look at the video instruction for the installation of pipes:
