Product Overview
The Rexroth R900420537 (S 15 A1.0) is a direct-operated, spring-loaded check valve designed for leak-free blocking of hydraulic flow in one direction while permitting free flow in the opposite direction. As part of the Rexroth S-series modular valve family, this cartridge-style check valve is engineered for installation in manifold blocks, sandwich plates, and custom hydraulic control blocks. The “S 15” designation indicates a size 15 cartridge interface, while the “A1.0” suffix denotes a nominal cracking pressure of approximately 1.0 bar, making it suitable for low-pressure pilot or return-line blocking functions. Its poppet-and-seat design ensures fast, positive sealing with minimal pressure drop in the free-flow direction, providing reliable backflow protection in industrial hydraulic circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Check Valve (Flow Control & Modular Valve) |
| Model Designation | R900420537 / S 15 A1.0 |
| Manufacturer | Bosch Rexroth |
| Operating Pressure | Standard Industrial Grade (Up to rated bar per Rexroth S-series specification) |
| Cracking Pressure | Approx. 1.0 bar (A1.0 spring rating) |
| Mounting & Connection | Size 15 cartridge interface, standard Rexroth modular mounting cavity |
| Sealing Principle | Poppet-and-seat, spring-loaded, zero-leak blocking in one direction |
Engineering Features & Advantages
- Precision Performance: Poppet-and-seat geometry delivers fast, positive shut-off with minimal internal leakage, ensuring reliable directional blocking in critical hydraulic circuits.
- Low Cracking Pressure: The A1.0 spring rating enables opening at approximately 1.0 bar, minimizing pressure loss in the free-flow direction and improving overall system efficiency.
- Compact Cartridge Design: Size 15 cartridge format allows direct integration into manifold blocks and sandwich plates, reducing external piping and potential leak points.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with hardened, wear-resistant internal components.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth OEM standards for drop-in service replacement.
Typical Industrial Applications
This Rexroth check valve is commonly deployed in hydraulic power units, plastic injection molding machines, metallurgical presses, CNC machine tool clamping circuits, and general manifold-based hydraulic systems where reliable backflow prevention and load-holding functions are required. It is equally suited for pilot-line blocking, return-line isolation, and modular valve stack assemblies in mobile and stationary hydraulic equipment.
PRODUCT IMAGES
REXROTH R900420537 / S 15 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 R900420537 / S 15 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.