The Rexroth SL 10 PB1-4X/M is a high-performance, pilot-operated check valve designed for reliable hydraulic system control. As a sandwich plate valve, it allows for easy and compact integration into vertical stacking assemblies with other size 10 (NG10 / CETOP 5) valves. This component permits free flow from port A to B while blocking flow in the reverse direction. The blocked flow can be opened by applying sufficient pilot pressure to the X port, providing precise control over actuator movements and preventing unintended load dropping. Manufactured by Bosch Rexroth, this valve ensures durability and consistent performance in demanding industrial applications up to 315 bar.