MOOG D661-4577C Proportional Solenoid Valve
4 week ago
Product details
D661-011A
D661-027C
D661-030C
D661-031A
D661-039C
D661-043D
D661-053D
D661-061D
D661-1701E
D661-1702E
D661-1703E
D661-1704E
D661-1705E
D661-1705E-5
D661-1709E
D661-1710E
D661-1715E-4
D661-1719F
D661-1722E-5
D661-1727E
D661-1729E
D661-1730E
D661-188D-4
D661-1727E
D661-1729E
D661-1730E
D661-188D-4
D661-188D-5
D661-1901E
D661-1906E-4
D661-1907E-4
D661-1907E-7
D661-1912E
D661-1913E
D661-1915E-6
D661-1918E
D661-191D-5
D661-1924E
D661-1925E
D661-1926E
D661-1927E-4
D661-192D-5
D661-1931E
D661-1932E
D661-1933E-4
D661-1933E-6
D661-1937E-4
D661-1957E
D661-1960E
D661-1962E
D661-1963E
D661-1964E
D661-1965E
D661-1966E
D661-205A
D661-212D
D661-213C
D661-214D
D661-220A
D661-246A
D661-312A
D661-312A-4
D661-318B-5
D661-318D-4
D661-318D-5
D661-319D
D661-323D
D661-324D
D661-326D
D661-344A
1. Product Overview
TheMOOG D661-4577Cis a high-performanceelectro-hydraulic proportional directional control valvemanufactured by MOOG Inc., part of theD661 Series. Designed for hydraulic systems requiring precise, fast-response control, it is widely used in industrial automation, aerospace, marine engineering, and heavy machinery applications.
2. Core Features
(1) Proportional Control Technology
• Linear Flow Regulation: Precisely controls valve spool position via input current (typically 4-20mA or 0-10V signals), enabling continuous, stepless adjustment of flow or pressure.
• High Resolution: Control accuracy up to0.1%, ensuring stable system operation.
• Fast Response: Response time<10ms, suitable for dynamic applications (e.g., robotic joint control).
(2) Structural Design
• Direct-Acting/Pilot-Operated Options: The D661-4577C typically features a direct-acting design for medium-pressure systems; high-pressure variants may use pilot-operated structures.
• Spool Type: Slide valve design with zero-overlap or negative-overlap options to optimize control characteristics.
• Sealing Technology: High-performance seal materials reduce internal leakage and extend service life.
(3) Electrical Interface
• Integrated Amplifier: Optional built-in electronic amplifier simplifies system wiring.
• Compatibility: Supports standard industrial control signals (e.g., PWM, analog input) for seamless integration with PLCs, CNCs, and other controllers.
3. Key Technical Specifications
【表格】
Parameter D661-4577C Typical Value
Nominal Flow 30–100 L/min (model-dependent)
Max Pressure 350 bar (5075 psi)
Supply Voltage 24V DC (±10%)
Input Signal 4-20mA / 0-10V
Repeatability ±0.5%
Hysteresis <1%
Operating Temp -40°C to +85°C
Protection Class IP65 (dust/waterproof)
4. Typical Applications
(1) Industrial Automation
• Injection Molding Machines: Controls hydraulic cylinder injection speed and holding pressure.
• Die-Casting Machines: Regulates clamping force and opening speed for consistent product quality.
• Machine Tools: Enables smooth motion control of tool feed systems.
(2) Aerospace
• Flight Simulators: Precisely controls hydraulic actuator positions to simulate flight maneuvers.
• Landing Gear Systems: Adjusts retraction/extension speed for safety and reliability.
(3) Marine & Offshore Engineering
• Steering Gear Control: Optimizes steering response and reduces energy consumption.
• Deck Machinery: Controls hydraulic systems for cranes and anchors.
(4) Energy & Heavy Machinery
• Wind Turbines: Regulates hydraulic cylinder stroke in pitch control systems.
• Excavators: Controls compound movements of booms and buckets for improved operational efficiency.
5. Model Selection & Customization
MOOG offers multiple variants of theD661 Serieswith customizable options:
• Flow Range: 10 L/min to 300 L/min.
• Pressure Ratings: Up to 420 bar.
• Electrical Interfaces: Supports fieldbus protocols (e.g., CAN, EtherCAT).
• Special Coatings: For marine or corrosive environments.
6. Maintenance & Troubleshooting
• Regular Inspections: Clean filters and monitor oil contamination (recommended NAS 1638 Class 6 or better).
• Electrical Diagnostics: Use an oscilloscope to verify linearity between input signals and spool displacement.
• Common Issues:
• Insufficient Flow: Check supply pressure, spool binding, or internal leakage.
• Sluggish Response: Calibrate amplifier gain or replace worn seals.
7. Competitive Advantages
• Brand Reputation: MOOG is a leader in electro-hydraulic control, with products certified to ISO 9001.
• Global Support: 24/7 technical consultation and spare parts availability through a worldwide service network.
• Long-Life Design: Spool and valve body feature hard-coated surfaces, with a lifecycle exceeding 100 million cycles.
For detailed dimensional drawings, CAD models, or test reports, contact MOOG directly or authorized distributors.
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