4-Way 3-Position Hydraulic Valves

4-way valves have 4 ports; Pressure (P), Tank (T), Advance (A) and Retract (B). The 3 positions are used to control the advance, retract and hold the tool or cylinder. 4-way valves are designed to operate double-acting hydraulic tools. and cylinders. They require a 4-way valve, providing control of the flow to each cylinder port.