Bosch Rexroth R900599473 Hydraulic Check Valve

Bosch Rexroth R900599473 is a hydraulic check valve in the SL30 family, marketed as the SL30PA2-4X/M variant and catalogued under part number R900599473 (often listed as SL30PA2-43). This is a high‑performance, hydraulically pilot‑operated check valve designed for leakage‑free blocking of a selected port in industrial hydraulic circuits, with the pilot mechanism providing controlled operation of the valve. The PA2 designation indicates a pilot‑operated configuration, enabling precise control of when flow is permitted while preventing backflow when the valve is not actuated. Typical applications include securing unidirectional flow in a hydraulic circuit and isolating a branch or actuator path where tight backflow prevention is essential, especially in systems that rely on a reliable pilot signal to regulate valve behavior. The R900599473 part number identifies this specific SL30 size and 4X port variant, ensuring compatibility with Rexroth’s SL30 valve family and related mounting and accessory options used in professional hydraulic installations.