Parker Hannifin B7V3AB557A is a 3-way pneumatic valve rated for 150 PSI, designed for compact, robust air-flow control in industrial pneumatic circuits. This three-port valve directs compressed air between a pressure input and two outputs, or to exhaust, enabling straightforward actuation of pneumatics such as cylinders and other air-driven devices. The listing notes a 1/2 inch size in its description, indicating the port connections for this model.
