Swimming pool sauna sand tank filter is a high-strength water treatment equipment. Also known as sand filter tank, sand tank filter, etc. The filtering sand tank is made of a mixture of glass fiber and imported resin, which is lightweight, high-strength, acid and alkali resistant, UV resistant, anti-aging, and has a large controllable flow range. The sand cylinder head (multi-directional valve) contains six control functions. It is convenient to perform flushing and backwashing operations on the filtered dirt. Therefore, it is widely used in water treatment industries such as environmental protection, food, and aquaculture. The drinking water type filter sand tank is more suitable for industries with higher requirements for filtered water quality because it increases the depth of filtration and has a more refined filtration effect.