Gravity spray gun cup paint filters are small, yet critically important, components integral to the operation of modern spray finishing systems, particularly HVLP (High Volume Low Pressure) and LVLP (Low Volume Low Pressure) guns. These filters are precision-engineered discs or cups typically mounted at the interface between the paint cup and the fluid inlet of the spray gun. Their primary function is to act as a final barrier, intercepting and retaining particulate contaminants, coagulated paint particles, and environmental debris that may be present within the coating material. By preventing these contaminants from entering the gun's intricate fluid passageway and nozzle assembly, the filter plays a direct role in safeguarding the equipment from potential clogging and abrasive wear. This ensures a consistent, uninterrupted flow of material, which is a prerequisite for achieving a uniform spray pattern and a high-quality surface finish across automotive refinishing, industrial coating