Product Overview
The Rexroth H-4WMM22J71/F (Material No. R900953980) is a manually operated, direct-actuated directional spool valve from the proven 4WMM series, engineered for precise control of start, stop, and direction of hydraulic fluid flow in industrial power units. Featuring a robust cast-iron housing and a hardened, precision-ground steel spool, this valve delivers reliable switching performance in open-loop hydraulic circuits. The “J” spool configuration provides a defined flow path for cylinder and motor control functions, while the manual lever actuation ensures deterministic operation independent of electrical power. With a size 22 (NG22 / CETOP 10) interface, this valve is designed for high-flow industrial systems requiring dependable, repeatable directional control.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Manually Operated Directional Spool Valve |
| Model Designation | H-4WMM22J71/F / R900953980 |
| Manufacturer | Bosch Rexroth |
| Nominal Size | NG22 (CETOP 10 / ISO 4401-10) |
| Spool Type | Type J (4-way, 3-position, closed center) |
| Actuation | Manual lever with detent / spring return |
| Operating Pressure | Up to 315 bar (ports P, A, B); 160 bar max at T |
| Nominal Flow Rate | Up to 450 L/min (dependent on circuit) |
| Mounting & Connection | Subplate mounting, ISO 4401-10-10-0-94 interface |
| Hydraulic Fluid | Mineral oil HL/HLP per DIN 51524; viscosity 10–800 mm²/s |
| Seal Material | NBR (FKM available on request) |
| Fluid Temperature Range | -20 °C to +80 °C |
Engineering Features & Advantages
- Precision Performance: The integrated manual lever with detent / spring return ensures precise, repeatable control with low hysteresis and stable performance across the full working range.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust construction and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Precision-manufactured to original REXROTH specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
With a size 22 (NG22 / CETOP 10) interface, this valve is designed for high-flow industrial systems requiring dependable, repeatable directional control.
PRODUCT IMAGES
REXROTH H-4WMM22J71/F / R900953980 Manually Operated Directional Spool 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 H-4WMM22J71/F / R900953980 Manual Directional Spool Valve. This Germany-made hydraulic component features a robust spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.