[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