The Rexroth R900481624 (model Z2FS6-2-4X/2QV) is a brand new, original dual-way throttling check valve with a plate-mount design. It is suitable for limiting the main or pilot flow of actuators in industrial hydraulic systems, enabling unidirectional throttling and free backflow. It is commonly used to regulate actuator speed or directional valve switching time. The following are its key specifications:

Core parameters

Structure and Working Principle

• Employs a symmetrically arranged double-throttle check valve structure, installed between the directional valve and the manifold block. The throttle valve core is moved axially by adjusting the screw, changing the throttle orifice size to control the forward flow; in the reverse direction, hydraulic pressure pushes open the check valve seat to achieve unobstructed backflow.

• The "2Q" version is suitable for main flow limitation, used for actuator speed regulation; the "1Q" version is used for pilot flow limitation, adapting to the switching time adjustment of pilot-operated directional valves.

Features and Applications

• Features: Direct drive, precise adjustment, with a locking nut to prevent loosening, compatible with various hydraulic media, high reliability.

• Applications: Widely used in hydraulic systems of injection molding machines, construction machinery, machine tools, etc., to control the movement speed of cylinders or motors, optimizing system response and stability.