Its purpose remains the same: to protect sensitive and expensive downstream equipment—such as pumps, control valves, spray nozzles, and meters—from damage, clogging, and wear caused by pipeline scale, rust, weld slag, and other particulates.
Its core mission is to filter and remove solid particle impurities such as rust, sand, and pipe debris from fluid media like water, steam, oil, and gas, thereby protecting downstream precision equipment from damage or blockage.