Product Overview
The MOOG D661-4651 is a high-performance servo proportional valve from the MOOG D661 series, engineered for precise electrohydraulic control of position, velocity, force, and pressure in demanding industrial and mobile applications. Featuring MOOG’s proven two-stage servo jet design, this valve delivers exceptional dynamic response, high resolution, and minimal hysteresis. The D661-4651 is a direct-operated, closed-loop servo valve that converts low-power electrical input signals into proportional hydraulic flow output, making it an ideal choice for critical motion control systems requiring superior accuracy and repeatability.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Servo Proportional Valve (Two-Stage) |
| Model Designation | MOOG D661-4651 |
| Operating Pressure | Up to 350 bar (5,080 psi) rated |
| Rated Flow | Model-dependent (typically 5–100 L/min at 70 bar valve drop) |
| Mounting & Connection | Standard ISO 4401 / CETOP interface, subplate mounting |
| Actuation Type | Electrohydraulic, torque motor driven pilot stage |
| Spool Configuration | 4-way, 3-position closed-center spool |
| Hysteresis | < 3% (typical) |
| Response Time | High dynamic response, typically < 10 ms |
| Filtration Requirement | ISO 4406 cleanliness code 16/14/11 or better |
Engineering Features & Advantages
- Precision Performance: The MOOG D661-4651 utilizes a two-stage servo jet pilot design that provides extremely high resolution, low hysteresis, and excellent repeatability for closed-loop position, velocity, and force control applications.
- Superior Dynamic Response: Fast response times and high frequency response enable precise control in high-speed motion profiles, making it ideal for applications demanding rapid actuation and accurate tracking.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with robust construction, wear-resistant spool and sleeve assembly, and proven MOOG quality standards.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM MOOG D661 series specifications, ensuring drop-in replacement without modification.
- Direct Fit Replacement: Precision-manufactured to original MOOG specifications for direct replacement, minimising downtime and eliminating fitment issues.
Typical Industrial Applications
The D661-4651 is a direct-operated, closed-loop servo valve that converts low-power electrical input signals into proportional hydraulic flow output, making it an ideal choice for critical motion control systems requiring superior accuracy and repeatability.
PRODUCT IMAGES
MOOG D661-4651 Servo Proportional 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 MOOG D661-4651 Servo Jet Valve. This Germany-made 24V DC hydraulic component features a two-stage servo jet design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.