Product Overview
The Rexroth SL 10 PA1-4X/V (Material Number: R900483371) is a pilot-operated check valve designed for leak-free load holding and controlled flow in hydraulic systems. As part of the Rexroth SL series, this valve is built to the 10 size (NG10) modular interface and belongs to component series 4X. It operates on the principle of a spring-loaded poppet that permits free flow in one direction while blocking reverse flow until a pilot pressure signal is applied to hydraulically unseat the poppet, allowing controlled return flow. This valve is typically used in modular (sandwich) manifold assemblies or as a line-mounted component to prevent actuator drift, hold loads securely, and enable controlled lowering or retraction in demanding industrial circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot-Operated Check Valve (Hydraulic Valve) |
| Model Designation | SL 10 PA1-4X/V / R900483371 |
| Nominal Size | NG10 (Size 10) |
| Component Series | 4X |
| Operating Pressure | Up to 315 bar (working pressure, depending on circuit configuration) |
| Pilot Pressure Ratio | Standard pilot ratio (e.g., 1:4.5 or as per PA1 configuration) |
| Mounting & Connection | Modular sandwich plate interface (ISO 4401 / DIN 24340 NG10) |
| Sealing Material | NBR (standard); consult manufacturer for alternative seals |
| Fluid Compatibility | Mineral oil-based hydraulic fluids (HL, HLP) per DIN 51524 |
Engineering Features & Advantages
- Leak-Free Load Holding: The poppet-type seat design ensures zero internal leakage in the blocked direction, preventing actuator drift and maintaining precise load positioning over extended periods.
- Pilot-Controlled Release: Hydraulic pilot pressure unseats the poppet for controlled reverse flow, enabling smooth and safe lowering of loads or retraction of cylinders without the need for external bleed circuits.
- Modular Sandwich Design: The NG10 interface allows direct integration into modular valve stacks, reducing piping complexity and installation time while maintaining a compact system footprint.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with hardened internal components and robust construction to withstand high pressure and demanding duty cycles.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth SL series valves, ensuring drop-in replacement without modification to existing manifolds or circuits.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
This valve is typically used in modular (sandwich) manifold assemblies or as a line-mounted component to prevent actuator drift, hold loads securely, and enable controlled lowering or retraction in demanding industrial circuits.
PRODUCT IMAGES
REXROTH SL 10 PA1-4X/V / R900483371 Pilot-Operated Check Valve
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Shop the genuine REXROTH SL 10 PA1-4X/V / R900483371 Pilot-Operated Check Valve. This German-made hydraulic component features a leak-free poppet design, delivering reliable fluid control for heavy-duty industrial systems.