Product Overview
The Rexroth SL10PB3-44/M (Material Number R900438637) is a pilot-operated check valve from the proven Rexroth SL series, designed for leak-free load holding and controlled load lowering in industrial hydraulic systems. As a sandwich (modular) plate valve, it mounts between a directional control valve and a subplate or manifold, providing a compact, space-saving solution for blocking flow in one direction while permitting free flow in the opposite direction. The valve opens to allow reverse flow only when a pilot pressure signal is applied to the integrated pilot piston, ensuring precise, reliable control of actuator position under load. With a size 10 (NG10 / CETOP 5) interface, this valve is engineered for high-pressure industrial circuits requiring dependable load-holding performance and long service life.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Pilot-Operated Check Valve (Modular / Sandwich Plate) |
| Model Designation | SL10PB3-44/M (R900438637) |
| Nominal Size | NG10 (CETOP 5 / ISO 4401-05) |
| Operating Pressure | Up to 315 bar (working pressure, standard industrial grade) |
| Pilot Ratio | Standard pilot ratio (e.g., 4.5:1 or 10:1 depending on configuration) |
| Mounting & Connection | Sandwich plate mounting per ISO 4401-05 / CETOP 5 interface |
| Sealing Material | NBR (Buna-N) standard; FKM available for high-temperature applications |
| Fluid Compatibility | Mineral oil based hydraulic fluids (HL, HLP, HLP-D, HVLP) |
| Flow Direction | Free flow in one direction; blocked in reverse until pilot pressure is applied |
Engineering Features & Advantages
- Precision Performance: The pilot-operated design ensures leak-free blocking of flow in the reverse direction, providing reliable load holding without drift. The pilot piston opens the poppet only when the required pilot pressure is achieved, allowing controlled and precise load lowering.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, the SL10PB3-44/M features hardened, precision-ground internal components that resist wear and contamination, ensuring long service life and consistent performance in demanding hydraulic circuits.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards. The sandwich plate design allows direct integration between a directional valve and subplate without additional piping, reducing installation time and leak points.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original REXROTH standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
With a size 10 (NG10 / CETOP 5) interface, this valve is engineered for high-pressure industrial circuits requiring dependable load-holding performance and long service life.
PRODUCT IMAGES
REXROTH SL10PB3-44/M / R900438637 Pilot-Operated Check Valve
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH SL10PB3-44/M / R900438637 Pilot Operated Check Valve. This Germany-made hydraulic component features a robust poppet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.