Product Overview
The MOOG D661-4697C / G15JOAA5VSX2HA is a high-performance servo proportional valve from the MOOG D661 series, engineered for precise electrohydraulic control in demanding industrial and motion-control systems. Utilizing MOOG’s proven two-stage servo valve architecture, this valve integrates a high-response pilot stage with a robust main spool stage to deliver exceptional dynamic response, precise flow metering, and superior contamination tolerance. The D661 platform is widely recognized as an industry benchmark for closed-loop position, velocity, and force control, making it a critical component in applications requiring accurate, repeatable hydraulic actuation.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Servo Proportional Valve (Two-Stage, Spool-Type) |
| Model Designation | D661-4697C / G15JOAA5VSX2HA |
| Manufacturer | MOOG Inc. |
| Operating Pressure | Standard Industrial Grade (Up to 350 bar rated) |
| Rated Flow | Nominal flow per spool configuration (model-specific) |
| Pilot Stage | High-response nozzle-flapper / jet pilot stage |
| Spool Configuration | Four-way, three-position closed-center spool |
| Electrical Interface | Integrated valve electronics with analog command input |
| Mounting & Connection | Standard ISO 4401 / MOOG subplate interface |
| Filtration Requirement | ISO 4406 cleanliness class per MOOG specification |
Engineering Features & Advantages
- Precision Performance: Two-stage servo proportional design delivers high-resolution spool positioning, fast dynamic response, and accurate flow metering for closed-loop control of position, velocity, and force.
- Integrated Electronics: On-board valve electronics simplify system integration, improve signal conditioning, and ensure consistent performance across the operating envelope.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with robust spool and bushing design providing excellent contamination tolerance and long service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original MOOG D661 OEM standards, ensuring drop-in replacement without modification.
Typical Industrial Applications
The MOOG D661-4697C / G15JOAA5VSX2HA servo proportional valve is widely deployed
PRODUCT IMAGES

MOOG D661-4697C / G15JOAA5VSX2HA Servo Proportional 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 MOOG D661-4697C / G15JOAA5VSX2HA Servo Proportional Valve. This Germany-made hydraulic component features a high-response pilot stage, delivering leak-free, reliable fluid control for heavy-duty industrial systems.