A Primary Filter is an indispensable device on the pipeline for transporting media, usually installed in the pressure-reducing valve, pressure relief valve, fixed water level valve, and the inlet end of other equipment. Primary Filter consists of a barrel, stainless steel screen, drainage part, transmission device, and electrical control part. After the water to be treated has passed through the cartridge of the filter, its impurities are blocked. When cleaning is required, the removable cartridge can be taken out and re-installed after treatment, so it is extremely convenient to use and maintain. Next, we take a look at the features and applications of the Primary Filter. Here are some answers.