Z2FS
The valve type Z2FS is a twin throttle check valve in sandwich plate design. It is used for the main or pilot flow limitation of one or two actuator ports. Two throttle check valves aligned symmetrically to each other limit flows in one direction and allow free return flow in the opposite direction.
Product Description
In the supply throttling, the hydraulic fluid reaches actuator through channel via the throttling point created by the valve seat and the throttle spool. The throttle spool can be axially adjusted by means of a setscrew and thus allows for the setting of the throttling point.
The hydraulic fluid flowing back from the actuator moves the valve seat against the spring in the direction of the throttle spool and thus allows for the unhindered flow as check valve. Depending on the installation position, the throttling effect may be directly in the supply or in the discharge.
Main flow limitation (version “2Q”)For changing the velocity of an actuator (main flow limitation), the twin throttle check valve is installed between the direction-al valve and the subplate.
Pilot flow limitation (version “1Q”)With pilot operated directional valves, the twin throttle check valve can be used as switching time adjustment (pilot flow limitation). Then, it is installed between pilot control and main valve.
