The Rexroth R900071037, part of the Z2S 6 series, is a high-quality pilot-operated check valve designed for reliable performance in hydraulic systems. This valve functions to block oil flow in one direction while allowing free flow in the opposite direction. Its pilot-to-open feature enables the blocked flow to be released upon application of pressure at the pilot port. Designed as a sandwich plate valve, it conforms to the ISO 4401 porting pattern for size 6 components (NG6 / CETOP 3), ensuring easy integration into new or existing hydraulic circuits. It is commonly used for load-holding applications, preventing cylinder drift and ensuring safety and stability in industrial machinery.