Swimming pool filter system

Swimming pool filter system are one of the essential elements in the pool's filtration system, they work to achieve clean and crystalline water free of impurities. We all want to enjoy a good dip in transparent water and share it with friends and family, that is why it is important to carry out a good maintenance of the pool and choose the appropriate elements of the pool purifier.

How does the filtration system of a swimming pool work?

For a good filtration of the water, a movement through the hydraulic circuit is necessary, the stages that make it possible are suction, filtration and impulsion. A filtering deficiency can cause a proliferation of algae and bacteria and therefore green water and in poor condition for the bathroom.

• Suction: The pool water is sucked in by the pump and led to the treatment plant through the skimmer, sump, suction nozzles (pool cleaner intake). The water circulation is possible thanks to the suction pump, which is why it is important to have a pump with sufficient power and according to the volume of the pool.
• Filtration: The water supplied by the pump goes through the purifier that works to filter the impurities and obtain clean water. Larger filters will be retained in the skimmers and the pump pre-filter and therefore the filter will take care of the rest of the impurities. It is vitally important to choose a filter according to the power of the pump and vice versa.
• Impulsion: The pump returns the filtered water through the impulsion nozzles. The nozzles are placed on the opposite side of the skimmers for easier recirculation.

Pool filter system elements

To depuraste the pool water, three elements come into play: the filter, the pump and the selector valve. The filter and the pump is very important that they go in accordance, otherwise it would affect the correct maintenance of the pool. And the third component of the purifier is the selector valve that allows to execute the different functions of filter and pump.

Pool filters

It is one of the main elements of filtration equipment. There are different types of pool filters on the market: sand filters, cartridge filters and diatomaceous filters.

• Sand filters: they are the most used thanks to their efficiency and the little maintenance they need. The water is purified through a tank full of filtering load that can be flint (sand) or glass. They are also distinguished by the type of filter material: rolled, injected or blown. Depending on the space in the installation, the filter with a side or top selector valve will be chosen.
• Cartridge filters: these are filters for removable pools and pools with a low filtration volume. They require daily maintenance and replacement over a period of time.
• Diatomaceous filter: they have a higher performance and retention capacity, but at a higher cost.

It is important to take into account the pressure indicated by the pressure gauge that incorporates the filter, if it has a high pressure it means that a filter washing has to be carried out.

Pool pump

It is the other main element in the filtering system, its function is to bring the water flow to the filter for purification. The power of the pump must be correct to move the same amount of water per hour as the filter. That is why the agreement between pump and filter is what will guarantee a perfect maintenance of the pool. Sometimes the pool pump is also used for the manual pool cleaner, so you have to take into account the minimum power required for the pool cleaner.

In our online store we have the best brands such as ESPA, PSH, DAB so you can buy the most suitable pool pump for your installation.

Pool selector valve

The selector valve for the pool is an element whose function is to provide the different functions of the pool filter and pump. The 6-way valve, as the name indicates, has 6 positions: filtration, washing, rinsing, recirculation, emptying and closed.

Monobloc depuration system

Buying the monobloc water depuration system is a compact and complete solution. It is a filtration equipment composed of a filter, a pump and a selector valve. Especially recommended for removable and small pools with a low filtration volume.

Choosing the right pool filter and pump

To determine the ideal pool treatment plant for your pool, several parameters must be taken into account.

• Volume is the amount of water in the pool glass.
  Calculation: length x width x average depth
  Example: 8 mx 4 mx 1.5 m pool = 48 m³
• Flow is the amount of water in circulation in a period of time. For its calculation, the filtration time must be taken into account, we recommend a time of 6-8 hours a day.
  Calculation: (pool volume / filter time) m³ / h
  Example: 48m³ / 8 hours = 6 m³ / h

With these data we will see that at a height of 10 meters (mca) the pump provides us with a volume of 6 m³ / h. For example, we would choose the PSH Micro 50 pump that provides us with a flow of 6.2m³ and the lateral Millemiun astralpool filter with a diameter of 430 mm that provides us with a flow of 7m³ / h.

For pools that have manual pool cleaners, we recommend buying a pool pump with a minimum of 0.75 HP - 1CV, since they need a minimum of power.