PVC ball valve is a quarter-turn valve made from polyvinyl chloride that controls fluid flow by rotating a spherical ball with a central hole. Its purpose is to turn water, air, and corrosive chemical flows on or off quickly and reliably. PVC ball valves are favored for their corrosion resistance, durability, cost-effectiveness, and ease of operation, making them ideal for plumbing, industrial, and pool systems, despite their lower temperature and pressure limits compared to metal valves.