The STAR 550 Series is a high-performance 2-stage servo valve designed for demanding industrial applications. Offering rated flows up to 75 l/min and a maximum operating pressure of 315 bar, this servo valve provides exceptional control, stability, and longevity.
Key Features
✔ Standard & High-Response Versions – Optimized for precision and speed
✔ ISO 10372-04-04-0-92 Mounting Pattern – Industry-standard compatibility
✔ Internal Pilot Supply (4-Port) – Ensuring efficient operation
✔ Suitable for 3-Way or 4-Way Applications – Versatile design
✔ Low Hysteresis & Zero Point Drift – Enhanced accuracy
✔ High Spool Drive Forces – Reliable performance in high-load applications
✔ Spool-in-Bushing Design – Increased durability and efficiency
✔ Dry Torque Motor with Mechanical Feedback – Improved responsiveness
✔ Sapphire Technology – Ensuring extended service life
Advanced Engineering & Customization
Specialized Designs for Unique Applications
- Compact Servo Designs – Space-efficient solutions
- Special Interfaces & Modular Components – Custom configurations available
Sapphire Flow Technology
- First Stage Stability – Precisely matched flow properties
- Long-Life Performance – Engineered for extreme environments
Connector Options
- MIL-C-5015 & MIL-DTL-38999
- Conduit-Style Male/Female
- Hermetic Sealing for Harsh Conditions
Custom Spool Lap & Bushing Port Geometries
- Zero Overlap – Maximized precision
- Overlap (Closed Center) / Underlap (Open Center) – Tailored to specific needs
- Dual Gain & Asymmetric Gain Options
Safety & Reliability
✔ Flame-Proof & Intrinsically Safe Options
✔ Class, Division & Zone Certifications
✔ Mechanical Failsafe Features
✔ Double & Triple Coil Redundancy for Critical Operations
Sapphire Ball-in-Slot Design – Unmatched Durability
✔ Incorporated in STAR Designs Since 1988
✔ Billions of Cycles per Service Life
✔ Extended Spool Life with Spool Rotation
✔ Ultra-Low Friction Sapphire-to-Steel Contact
✔ Unhindered Feedback Mechanism
The STAR 550 Series Servo Valve is engineered for precision, reliability, and long service life, making it the ideal choice for high-performance hydraulic control systems.
Extended warranties available. Contact us today to discuss your application!