Product Overview
The Rexroth R900422886 (S 8 A1.0) is a direct-operated check valve from the Rexroth S-series modular valve family, engineered to permit free flow in one direction while providing zero-leak, leak-tight shutoff in the reverse direction. As a sandwich-style inline check valve, it is designed for block mounting within modular hydraulic systems, allowing unobstructed flow from the inlet to the outlet port while a spring-loaded poppet or seat element blocks reverse flow with high sealing integrity. This valve serves as a critical anti-return and load-holding element in industrial hydraulic circuits, protecting pumps, actuators, and downstream components from reverse flow surges, pressure spikes, and unintended load descent.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Check Valve (Flow Control & Modular Valve) |
| Model Designation | R900422886 / S 8 A1.0 |
| Manufacturer | Bosch Rexroth |
| Nominal Size | NG 8 (DIN 24340 / ISO 4401 interface) |
| Cracking Pressure | A1.0 = approximately 1.0 bar spring cracking pressure |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per Rexroth S-series specification) |
| Flow Direction | Free flow one direction; leak-tight shutoff in reverse direction |
| Mounting & Connection | Sandwich / modular block mounting, ISO / Manufacturer Interface |
| Sealing | Precision metal-to-metal seat with elastomer seals |
Engineering Features & Advantages
- Precision Performance: Spring-loaded poppet design delivers fast, positive closure with minimal pressure drop in the free-flow direction, ensuring reliable anti-return protection and load holding in demanding circuits.
- Leak-Tight Sealing: Precision-machined seat geometry provides excellent sealing integrity in the blocked direction, minimizing internal leakage and preventing drift of loaded actuators.
- Modular Integration: Sandwich-style construction enables direct stacking within Rexroth modular valve assemblies, simplifying circuit design and reducing piping and installation time.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened internal components resistant to wear and pressure cycling.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, ensuring drop-in interchangeability for R900422886 / S 8 A1.0.
Typical Industrial Applications
This Rexroth check valve is widely deployed in hydraulic power units and modular
PRODUCT IMAGES
REXROTH R900422886 / S 8 A1.0 Check Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH R900422886 / S 8 A1.0/ Solenoid Directional Spool Valve. This German-made hydraulic component features a reliable spool design, delivering leak-free, precise fluid control for heavy-duty industrial systems.