The Rexroth Z2FS22 is a double throttle/check valve designed in a sandwich plate configuration according to the ISO 4401-08 standard (NG22). This specific model, R900443176 Z2FS22-8-31/S2, provides meter-out flow control, allowing independent throttling of flow in one direction for two separate actuator lines while permitting free flow in the opposite direction via integrated check valves. Adjustment is achieved using a socket head screw secured by a lock nut and protected by a cap. The sandwich plate design enables compact vertical stacking with other NG22 valves. This version features FKM seals (S2), offering compatibility with a wider range of hydraulic fluids and operating temperatures.