Fittings are an integral part of the pipeline system
In general, fittings are all kinds of knots,Used to connect different parts of pipelines. They are various in shape and configuration: corners (bends), tees, couplings, collectors, crosses, adapters, plugs. Pipe fittings are classified by their connection methods. So, they can be threaded, capillary (for soldering capillary), compression, self-locking, glue.
For joining metal-plastic pipes useCompression joints made of steel, plastic, brass, copper, polypropylene. Metal-plastic fittings are easy to use, because they have a special crimping ring. It is tightened with a wrench after putting it on the pipe.
For joining pipes from copper, fittings are used,intended for soldering capillary. The principle of their application is quite simple: the required assembly is put on the pipe and heated by a special heating pad until the copper or tin wire solder under the internal thread is melted. After that, it fills all the free space between the fitting and the pipe.
For the connection of metal-polymer pipes,special press fittings. Most often they are made of brass. Their crimp sleeve is made of steel. To install such a fitting, you need a special press.
All fittings have different properties thatdepend on the type of material from which they are made. So, brass knots have high impact resistance, durability and heat resistance. They are used in process pipelines, water and heat pipes. To give them increased resistance to corrosion, they are covered with a layer of nickel or chromium.