Product Overview
The MOOG D951-2009 /C servo proportional valve is a high-performance, two-stage electrohydraulic control valve engineered by Moog for demanding closed-loop and open-loop industrial motion control systems. Configured with the HPR18A1RKP019SM28F2Z00 pilot and main stage assembly, this valve utilizes a torque-motor driven pilot stage to precisely position the main spool, delivering proportional flow output that is directly commanded by an analog electrical input signal. The D951 series is recognized for its fast dynamic response, minimal hysteresis, and excellent repeatability, making it a benchmark component for applications requiring accurate velocity, position, and force regulation of hydraulic actuators. Its robust spool-in-sleeve metering design ensures stable operation across a wide range of pressure and flow conditions, while the integrated mechanical feedback mechanism maintains precise spool positioning proportional to the command signal.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Servo Proportional Valve (Two-Stage Electrohydraulic) |
| Model Designation | D951-2009 /C / HPR18A1RKP019SM28F2Z00 |
| Manufacturer | MOOG |
| Operating Pressure | Standard Industrial Grade (Up to 315 bar rated) |
| Rated Flow Capacity | Nominal 19 L/min at 70 bar valve pressure drop (per size code) |
| Pilot Stage Type | Torque motor with mechanical feedback |
| Mounting & Connection | Standard ISO 4401 / CETOP subplate mounting interface |
| Electrical Command Signal | Analog ±10 V DC or ±mA current command (typical) |
| Hysteresis | < 0.5% of rated signal |
| Response Time | High dynamic response, suitable for closed-loop control |
Engineering Features & Advantages
- Precision Metering Performance: The torque-motor pilot stage and spool-in-sleeve main stage deliver highly accurate, proportional flow control with minimal deadband, low hysteresis, and excellent resolution for precise actuator positioning and velocity control.
- Fast Dynamic Response: Optimized pilot and main stage dynamics enable rapid valve actuation, making the D951-2009 ideal for high-cycle closed-loop servo applications requiring tight tracking accuracy.
- Industrial Reliability: Constructed for continuous duty with durable, corrosion-resistant materials and proven engineering for maximum system uptime.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original MOOG standards, allowing straightforward retrofit into existing hydraulic systems without rework.
Typical Industrial Applications
The D951 series is recognized for its fast dynamic response, minimal hysteresis, and excellent repeatability, making it a benchmark component for applications requiring accurate velocity, position, and force regulation of hydraulic actuators.
PRODUCT IMAGES
MOOG D951-2009 /C / HPR18A1RKP019SM28F2Z00 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.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine MOOG D951-2009 /C / HPR18A1RKP019SM28F2Z00 Servo Proportional Valve. This US-made hydraulic component features a high-response pilot stage, delivering precise, leak-free fluid control for heavy-duty industrial systems.