There are two types of filter cap materials: polypropylene and ABS, which are divided into medium, short, long, and tower types. Widely used in combination, loop, ion exchanger, mechanical filter, non filter and other equipment for softening water quality, it can effectively filter and backwash air-water.

There are various types of water filter caps, including mushroom shaped, plum blossom shaped, tower shaped, and cylindrical shaped, all made of ABS engineering plastic. The structure is reasonable, the connection is firm, the compressive strength is high, the gap is not deformed, and there is no dead water corner area between the filter plates, no mud accumulation, and good effect. The (hourly water discharge) is 0.25 tons, 0.5 tons, and 1 ton. Long stem filter heads are commonly used in the backwash water distribution system of filter tanks; Short stem filter heads are used in filtration devices for water treatment equipment such as single water backwashing, gravity type, pressure type filter tanks, and ion exchange filter beds.