Product Overview
The Rexroth 3WH6A53/ (Material Number R900472229) is a hydraulically operated directional spool valve from the proven Rexroth 3WH6 series, designed for precise control of start, stop, and direction of hydraulic fluid flow in industrial power units. Actuated by an external pilot pressure signal applied to the control piston, this valve shifts its spool without the need for electrical solenoids, making it ideal for hazardous areas, subsea or washdown environments, and applications requiring high switching forces. The 3WH6A53/ features a size 6 (NG6 / CETOP 3) direct-operated spool design with a spring-centered or spring-offset configuration, delivering reliable, leak-resistant directional control in demanding hydraulic circuits.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulically Operated Directional Spool Valve (NG6 / CETOP 3) |
| Model Designation | 3WH6A53/ (R900472229) |
| Actuation Type | Hydraulic pilot pressure via control piston (no solenoid) |
| Spool Type | A53 — 3-position, 4-way, spring-centered, closed-center |
| Operating Pressure | Up to 315 bar (working ports); pilot pressure per manufacturer data |
| Nominal Flow Rate | Up to 60 L/min (NG6 standard) |
| Mounting & Connection | Subplate mounting per ISO 4401-03 / DIN 24340-A6, CETOP 3 interface |
| Hydraulic Fluid | Mineral oil HL/HLP per DIN 51524; viscosity 10–800 mm²/s |
| Fluid Temperature Range | -20 °C to +80 °C (standard NBR seals) |
Engineering Features & Advantages
- Precision Spool Metering: Hardened, precision-ground spool and sleeve pair ensures minimal internal leakage, accurate flow metering, and long service life under high cycle rates.
- Hydraulic Actuation Reliability: Pilot-pressure operation eliminates electrical components, providing safe, spark-free switching in hazardous, wet, or high-vibration environments.
- Spring-Centered Fail-Safe: The A53 spool returns to the closed-center position upon loss of pilot pressure, preventing unintended actuator movement and enhancing system safety.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with high resistance to contamination and pressure spikes.
- Direct Fit Replacement: Precision-manufactured to original REXROTH specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
Actuated by an external pilot pressure signal applied to the control piston, this valve shifts its spool without the need for electrical solenoids, making it ideal for hazardous areas, subsea or washdown environments, and applications requiring high switching forces.
PRODUCT IMAGES
REXROTH 3WH6A53/ / R900472229 Hydraulically Operated Directional Spool Valve
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- 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 3WH6A53/ / R900472229 Directional Spool Valve. This Germany-made hydraulic component features a direct-operated spool design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.