Product Overview
The Rexroth L 10 PA1-4X/ (Material No. R900483371) is a pilot operated check valve from the proven Rexroth L-series modular valve program, designed for leak-free load holding and controlled flow blocking in industrial hydraulic systems. As a pilot operated (externally piloted, decompression-capable) check valve, it permits free flow in one direction and blocks reverse flow until a sufficient pilot pressure signal is applied to the pilot port, at which point the poppet is lifted off its seat to allow controlled return flow. The “10” designation indicates NG10 (Size 10) modular interface, and the “4X” series designation denotes the current Rexroth modular valve generation with standardized mounting patterns. This valve is typically sandwiched between a directional control valve and its subplate or manifold, providing reliable load holding, pilot-controlled lowering, and protection against unintended actuator movement in the event of pressure loss.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pilot Operated Check Valve (Modular / Sandwich Plate Design) |
| Model Designation | L 10 PA1-4X/ / R900483371 |
| Nominal Size | NG10 (Size 10) per ISO 4401 / DIN 24340 |
| Series | 4X (Rexroth modular valve generation) |
| Function | Free flow in one direction; pilot-controlled release of blocked flow |
| Operating Pressure | Up to 315 bar (working pressure, standard industrial grade) |
| Pilot Pressure Ratio | Standard Rexroth pilot ratio (typically 1:4.5 area ratio, model-dependent) |
| Mounting & Connection | ISO 4401 / DIN 24340 NG10 modular interface, sandwich mounting |
| Sealing | NBR (Buna-N) standard; FKM available on request |
| Hydraulic Fluid | Mineral oil per DIN 51524 (HL, HLP); other fluids on request |
| Fluid Temperature Range | -20 °C to +80 °C (NBR seals) |
Engineering Features & Advantages
- Precision Performance: The pilot operated check valve (modular / sandwich plate design) delivers precise, repeatable performance with low hysteresis and stable control across the full working range.
- Industrial Reliability: Designed for dependable long-term operation in demanding industrial environments, with quality bearings and sealing systems ensuring extended maintenance intervals.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original Rexroth standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
R900483371) is a pilot operated check valve from the proven Rexroth L-series modular valve program, designed for leak-free load holding and controlled flow blocking in industrial hydraulic systems.
PRODUCT IMAGES
Rexroth L 10 PA1-4X/ / R900483371 Pilot Operated 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 L 10 PA1-4X/ / R900483371 Pilot Operated Check Valve. This Germany-made hydraulic component features a leak-free poppet design, delivering reliable fluid control for heavy-duty industrial systems.