Rexroth 1‑818‑509‑291 Cartridge Valve is a high-performance, factory‑new hydraulic control component designed for seamless integration into modular valve blocks and hydraulic manifolds. With the specific cartridge part number clearly specified, offering traceability and compatibility with Bosch Rexroth systems, this valve supports precision control functions such as pressure relief, sequence, or flow regulation across a wide range of industrial and mobile fluid power applications.
Manufactured by Rexroth to exacting OEM standards, the 1‑818‑509‑291 features precision‑machined internal spool and housing components, ensuring tight sealing and minimal internal leakage. Its robust design allows for dependable operation under high-pressure conditions—commonly up to 350 bar—while maintaining fast response times to protect sensitive hydraulic circuits. The cartridge body, made from hardened steel with reliable surface treatments, ensures exceptional durability, pressure resistance, and long service life.
This valve is designed for versatile installation in subplate, manifold, or parallel configurations. Its compact cartridge form factor enables high-density system layouts, reducing external piping and simplifying hydraulic architecture. During operation, the internal spool moves smoothly under system pressure or pilot signal, enabling accurate modulation of flow or pressure according to system demands. The cartridge can also be retrofitted into existing manifolds with standard Rexroth cavities, allowing performance upgrades without altering basic system design.
In maintenance and service applications, the cartridge valve’s modular structure simplifies replacement—field technicians can swap the element without disturbing surrounding components or requiring manifold removal. The valve arrives factory-tested to confirm leak-tight performance, correct dynamic response, and calibrated function.
Overall, the Rexroth 1‑818‑509‑291 Cartridge Valve delivers reliable, precise hydraulic control in a compact, modular package. Ideal for demanding applications in machine tools, presses, injection molding, and mobile platforms, it offers OEM-level quality, ease of integration, and long-term operational efficiency for fluid power systems.
