The FNW 150PSI 3″ True Union Ball Valve FNW340 FE is a manual-operated ball valve designed for industrial use. Made by FNW, this unit has a 4-inch diameter and a high-pressure rating of 150 psi. It is ideal for controlling the flow of fluids in various systems, such as hydraulics, pneumatics, pumps, and plumbing. With its durable construction and proven reliability, this ball valve is a valuable addition to any business or industrial setting requiring precise control of fluid flow.