[Removes Impurities and Dirt]: This water oil separator filter, universal oil water separator filter, mesh paint filter effectively prevents clogging of painting equipment and allows your paint to flow normally while removing unwanted insoluble impurities and dirt. Can be connected with paint spray gun, air line connector, pneumatic tools [Essential Tools]: The tool oil water separator filter, spray gun filter, air regulator filter is for automotive refinishing, marine, construction, woodworking furniture making and all industrial work, dust and particles in the spray gun filter, air compressor pipeline, ensure the gas is dry and effectively extend the life of pneumatic tools [The Best Friend of Pneumatic Tools]: The accessory transparent filter bowl, standard 1/4 male and female threads separates water, oil, moisture, dust and particles in the air compressor pipeline, ensures the gas is dry, effectively extend the life of the pneumatic tool. By pressing the relief valve, all the debris trapped inside will be discharged ... transparent filter accessory, standard 1/4 male and female threads separates water, oil, moisture, dust and particles in the air compressor line, ensures dry gas, effectively extends the service life of the air tool. By pressing the relief valve, all the trash trapped inside will be discharged [Universal Water Oil Separator Filter]: Universal standard 1/4" NPT male and female filter, standard 1/4 thread of this air filter, universal 6.35mm NPT inlet and outlet, suitable for spray paint gun, air line fitting, air tools, can visually check the accumulated moisture without removing the filter from the air tool, and discharge the water through the spring-loaded relief valve at the bottom