4 inch PVC socket ball valves are heavy-duty shut-off valves designed with socket (solvent-weld) ends for secure integration into large-diameter PVC piping systems. They utilize a robust quarter-turn ball mechanism that delivers fast, reliable on/off flow control while maintaining smooth flow with minimal pressure loss. Constructed from corrosion-resistant PVC, these valves are lightweight relative to metal alternatives yet engineered for durability in low to medium pressure applications. Due to their large size and high flow capacity, 4 inch PVC socket ball valves are commonly used in municipal water systems, industrial piping networks, large-scale irrigation projects, and water treatment and distribution facilities.