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Poolking, your best swimming pool equipment manufacturer and supplier with more than 20 years experience.   ​​​​​​​  Email: sandy@poolking.co

How Pool Filters Work

Swimming pool filters use special filter sand to eliminate tiny dirt in the pool. Filter sand is used as a medium for removing dirt and is packed in the cavity of the swimming pool filter. When the control knob is turned to the "filter" position, the pool water containing suspended dirt particles is pumped into the filter pipeline, and then guided by the control switch to the water outlet of the swimming pool filter.

As the pool water passes through the pool filter, microscopic dirt is captured and filtered out by the sand bed. The filtered clean water is returned to the swimming pool through the control switch from the bottom of the swimming pool filter through the pipeline. This entire process is continuous and automatic and provides a complete cycle for the pool filter and plumbing system.

After a period of use of the swimming pool filter, the accumulated dirt blocks the water flow and weakens it. It is time to clean the swimming pool filter. For example, for the filter sand tank of Guangdong Boying Environmental Protection Equipment Co., Ltd., when the control switch is turned to the "backwash" position, the water flow becomes the reverse direction, and the water flow directly reaches the bottom of the filter cavity, and then passes through the sand. After each backwash, the control switch should be turned to the "flushing" position, and the water pump should be turned on for 0.5 to 1 minute, then turned off, and then turned to "Filter" position to restart normal filtering.

1. FILTER (normal filtration) 2. BACKWASH (backwash, discharge the dirt accumulated in the swimming pool filter) 3. RINSE (after backwash, discharge the dirt in the sewage pipe) 4. WASTE (without swimming pool filter, Direct drainage) 5. RECIRCULATE (not circulated through the swimming pool filter) 6. CLOSED (close the swimming pool filter equipment) 1. The scope of application of the swimming pool filter: The sand filter system has been used and improved for more than 50 years abroad and domestically. It is a mature and complete swimming water treatment system, mainly suitable for domestic water systems such as large, medium and small swimming pools and small and medium landscape pools. Swimming pool, water park and jacuzzi water filtration Seawater and freshwater aquaculture Industrial water purification Drinking water pretreatment Agricultural irrigation Due to its high-precision filtration, the diatomite filtration system is suitable for domestic drinking water systems and small and medium-sized private swimming pools. In recent years, the transformation of this system has been applied to the post-treatment of water quality in waterworks.

2. Features of swimming pool filter: It is made of glass fiber winding, resistant to deformation, corrosion and wear. The multi-port valve is easy to operate and simple. The unique water distributor and water collector form a uniform water flow. The underdrain drainage system has high efficiency and is easy to install. , without maintenance, the water turbidity is less than 2NTU. 3. Swimming pool filter type: stainless steel sand tank, top sand tank, side sand tank, horizontal sand tank filter, Poolking is the best swimming pool equipment manufacturer and supplier in China. Poolking exists to provide the highest quality swimming pool equipment while offering competitive pricing..

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Poolking’s sand filter warranty is 3 years for fiberglass filter,2 years for plastic filter.During the warranty period,if the filters parts have any damage,we can judge the factors according to the photos or videos, then we can offer free parts to replace. If the filters are damaged badly,we will provide a new one.
The pumps and lights are 1 year warranty,the method is same as filters.
---Poolking has a professional Quality Control team to guarantee each product is 100% inspected before packing. For example when the filter inner tank comes out, they will make a first water testing before bobbin wounding. After installation all the connections or manhole & sightglass, they will make the second water testing. During the packing procedure, QC team will inspect all the details like wounding, neck, internal resin and so on to make sure no leaking and without flaw.
Poolking’s Horizontal Sand Filters in Singapore Zoo
Singapore Zoo is covering an area of 28.3 hectares. Natural scene in the parkinstead of fences, creating a natural living environment for all kinds of animals. Thereare about 3000 animals running free and living peacefully with tourists. It has beeninstalled more than 40 nos POOLKING's stacking horizontal sand filters in Sea Lion,Manatee Penguin hall . POOLING is the first manufacturer in China to produce
stacked horizontal sand filter.
Best Best Quality production environment Factory Supplier
Poolking Best Best Quality production environment Factory Supplier
Poolking Best Quality production environment Factory
Poolking won well-known brand awards for consecutive 3 years
On December 6, the 2021 China Swimming Pool Hot Spring SPA Industry Annual Conference was grandly held.     While commending outstanding brands, it also established a new benchmark in industry.                                                                       Poolking won  Well-known brand awards and Product excellent quality award.
----Poolking utilize serval world class production machines to produce the products, and strict quality control system for each products. It treats a small flaw with zero tolerance.
Not only good quality products, but also fast and satisfying after sales service for clients. Let the clients enjoy the clear water and comfortable services.
If Poolking’s products are same quality than others but higher prices, how can Poolking survive ? However Poolking can defeat other players and seize more market share.
Poolking is your best choice!
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Best swimming pool equipment manufacturer - Poolkin will continue for innovative management and excellent quality. Imagination will subvert the future, intelligent manufacturing will lead the era, that's the motto of Poolking!

If you have any question,please contact us.

Contact: Sandy

Email: sandy@poolking.co

Sales Hot line: +86-20-34982303

WhatsApp:+86-13922334815

Add: No. 80, Danan North Road, Dagang Village, Dagang Town, Nansha District, Guangzhou City (temporary business premises)

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