Flow trunk water filter

The water supply system in the city no longer correspond to any reasonable standards. But you want to protect not only directly connected to the water supply equipment, but also easy to drink from the tap, or even to cook. Wait for the power and utilities attend to the problems of citizens, it makes no sense. So I have to take things into their own hands and set the main flow in the flat water filter.

Cleaning system cuts directly into water and branch depending on the number and arrangement of cartridges capable of trapping various impurities. Only after it passed through the remaining water is distributed to consumers (boiler, mixer, washing /Dishwasher etc.). In accordance with what it should be removed from the general flow, there are several types of main filter.

primary purification

The main task "of mud" - delay large particles of rust, sand and other insoluble debris. No matter how complex was the cleaning system, first take the brunt of these filters. Typically, this is a strong fine mesh of non-corrosive metals. More advanced models may have a multilayer filter with a gradual decrease in the orifices.

coarse filters suitable for permanent use, because enough to restore them from time to time to wash out of the accumulated dirt and return to place.

Mechanical filters can go with an extra wrap of synthetic filament tow. These as pollution will have to change, although some craftsmen rinsed them from large debris and leave another for some time.

Fine cleaning

There are already used the system more complicated - with several filtration stages. Each is responsible for its own type of pollution, so that they can be combined, depending on the composition of the water in the main pipe.

• Small organic impurities and residual chlorine compounds are delayed by sorption with activated carbon cartridges. In order to increase their efficiency and removal from the stream of pesticides, petroleum and heavy metal ions based on their combined create filters with ion exchange materials.
• UV disinfection operate the processing units, water irradiating wavelength 250-260 nm. these systems are rather cumbersome and costly, besides, require a certain purity of the inlet flow, but they are effective in killing bacteria and viruses.
• Removal of colloidal iron - such cartridges accelerate oxidation of the metal dissolved in water and its loss into the precipitate, whereupon it merely lingers mechanical filters.

water softening

The abundance of the magnesium salt (Mg) and calcium (Ca) in water increases its rigidity, and to reduce the rate following processing methods are used:

• Magnetic pulse - universal devices which can be installed at any point in the system, regardless of temperature on the pitch. The magnetic field destroys scale crust which crumbles and mechanical cleaning is collected in filters or just goes to drain, without lingering on the interior surfaces of appliances.
• Filtration through ion exchange cartridges, where there are a substitution reaction with the sodium and potassium salts - gives a good effect softening, but the water must then retake the mechanical cleaning to remove the precipitated insoluble precipitate.

multistage system

There are universal mains filters for water purification - the so-called system with granular media. They are most effective as the liquid is removed from most of the contaminants and dissolved elements:

• salt;
• metals;
• Chlorine;
• Biological impurities.

In fact they work as a fine filter with softener, so that in a couple of them only requires a system that catches on the largest garbage input. The only drawback of such models - impressive dimensions, because of which they can fit only in a technical room. Granular media filters are placed in a large cylindrical tube and able to pass through a 25 m³/ч.

select the Features

The main thing to look for when buying a main filter - bandwidth. For use in the home system will be sufficient to 20-50 l / min. However, here it is all quite individual and depends on the particular family consumption, but in any case need to be guided to the maximum. It is equally important to take into account the pressure in the system, as a rule, it is 0.1-0.5 atm.

Also, one should distinguish backbone filters for cleaning of hot and cold water. The design of them can be the same, but the manufacturing materials are selected in accordance with the operating conditions. Typically, for hot water systems are models of heat-resistant plastic and stainless steel, and replaceable cartridges are made from polymers. In some cases, you can use the "hot" filter to a branch of cold water, but not resistant to high temperature design for the cold-water are not as versatile.

Installation and Connection

For the installation of a backbone treatment systems require a minimum set of tools: a screwdriver and a drill, the right size keys, FUM tape and dry cloth. They may also need to Bulgarian and welding machine, if you have to punch the filter in the existing water supply branch. Set of special hardware usually comes in the box with the system.

The procedure works:

1. Shut off the water at a portion where the filter is installed, depressurize, open all valves.
2. Mark the point of attachment to the wall (generally a pipe tie-level).
3. Drill holes and drive the dowels.
4. Disconnect branch pipe and install a filter through a flexible liner or sleeve. All connection points required to seal with PTFE tape and seal.
5. Secure with screws on the filter wall, sue him water and test it out.

pay attention to the direction of water flow during installation of the filter - the entry point on the body should be designation «IN».

After the system testing should not immediately take clean water per sample. Give it 5-10 minutes to drain and then can use.