Product Overview
The Rexroth S10A0.0 (Material Number: R900420530) is a high-performance directional seat valve engineered by Bosch Rexroth for precise control of hydraulic fluid flow direction in industrial power units. Operating on a poppet-and-seat sealing principle, this valve provides zero-leakage shut-off in the closed position, making it ideal for applications requiring load holding, pressure isolation, or leak-free circuit blocking. The S10A0.0 is a direct-operated, spring-return directional seat valve designed for subplate mounting in accordance with ISO 4401 / DIN 24340 standards, ensuring seamless integration into existing Rexroth and compatible hydraulic manifolds. Its robust construction and precision-machined sealing elements deliver reliable switching performance and long service life in demanding industrial environments.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Directional Seat Valve (Poppet Type) |
| Model Designation | S10A0.0 / R900420530 |
| Manufacturer | Bosch Rexroth |
| Nominal Size | NG10 (Size 10) |
| Operating Pressure | Up to 315 bar (standard industrial grade) |
| Flow Rate | Up to 80 L/min (typical for NG10 seat valve) |
| Actuation Type | Direct operated, spring return / solenoid or manual actuation (model dependent) |
| Mounting & Connection | Subplate mounting per ISO 4401 / DIN 24340 (NG10 interface) |
| Sealing Principle | Metallic seat-to-poppet contact for zero-leakage closure |
| Hydraulic Fluid | Mineral oil based hydraulic fluids (HL, HLP) per DIN 51524 |
| Fluid Temperature Range | -20°C to +80°C (standard NBR seals) |
Engineering Features & Advantages
- Zero-Leakage Sealing: The seat-and-poppet design ensures bubble-tight closure, preventing internal leakage and enabling reliable load holding without drift in blocked positions.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
Its robust construction and precision-machined sealing elements deliver reliable switching performance and long service life in demanding industrial environments.
PRODUCT IMAGES


Rexroth S10A0.0 / R900420530 Directional Seat Valve
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- 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 S10A0.0 / R900420530 Directional Control Valve. This Germany-made hydraulic component features a solenoid-actuated design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.