THROTTLE CHECK VALVE Z2FS6B2-4X/2QV

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The Bosch Rexroth Z2FS6B2-4X/2QV (R900440565) is a high-performance industrial hydraulic twin throttle check valve designed for reliable flow regulation. This mechanically actuated valve, suitable for sandwich plate mounting, ensures precise throttling to the desired setting value with its direct-acting setscrew featuring a lock nut. It is identifiable by its spool symbol B B or B B and is capable of handling a maximum pressure as specified by its product group. The Z2FS6B2-4X/2QV valve's primary function is to limit the main or pilot flow of one or two actuator ports efficiently. It features two symmetrically aligned throttle check valves that permit flow restriction in one direction while allowing free return flow in the opposite direction. The hydraulic fluid's supply throttling occurs through channel A, where it passes through a throttling point created between the valve seat and the throttle spool, which can be adjusted axially for precise control. For the return flow, the valve seat moves against a spring towards the throttle spool, allowing an unobstructed flow as a check valve. This throttling effect can be applied to either supply or discharge depending on installation position. The Z2FS6B2-4X/2QV can be used for main flow limitation or pilot flow limitation in various applications, providing velocity adjustment for actuators or switching time adjustment for pilot-operated directional valves. The Z2FS6B2-4X/2QV comes in size 6 with compatibility with various hydraulic fluids including HL, HLP, HLPD, HVLP, HVLPD, HETG, HEES, HEPG, HFDU and HFDR. It has multiple adjustment types such as setscrew with lock nut and protective cap; lockable rotary knob with scale; spindle with internal hexagon and scale; and rotary knob with scale. With maximum operating pressures and flows defined by its component series X parameters, this Bosch Rexroth valve adheres to porting patterns according to DIN and ISO standards for seamless integration into hydraulic systems.