Is the pre-filter more expensive than usual? What do you mean? Is it said that the pre-filter will cost more water than usual? The front filter is a primary filter for the water entering the household, removing large particles such as sediment and rust in the water. Generally, the filter accuracy of the front filter is about 40 microns, mainly depending on the filter element, it can also reach 5 microns. The pre-filter will be more expensive because there is waste water discharged. Generally, the pre-filter needs to be cleaned after a period of use, and there are manual cleaning and automatic flushing, when the filter is washed, some water will be mixed with the dirt on the filter element to discharge the wastewater. Otherwise, I don't know where else the wastewater will be compared.

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What does liquid medicine filter 1.2X55mm 5um mean? Filter is an indispensable device on the conveying medium pipeline, usually installed in the pressure reducing valve, pressure relief valve, fixed water level valve, and the imported equipment of other equipment of the square filter. After the filter cartridge with a certain size filter screen, its impurities are blocked. when cleaning is needed, just remove the removable filter cartridge and reload it after processing. Therefore, it is extremely convenient to use and maintain. Filter area 1.2X55 filter effect is greater than 5 microns