743 and 744 Series Servo Valves
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Features:
- 2-stage flow control mechanical feedback valve
- Nozzle flapper pilot stage for high resolution and low hysteresis
- High spool driving forces, rugged design ensures long-life operation
- Instrinsically-safe version available for applications requring products certified for potentially hazardous environments
- Optional three coil pilot configuration for added protection against coil failure
- Field replaceable pilot stage filter
- Optional failsafe methods ensure reliable and predictable actuator motion in the event of signal loss
- Designed to meet all requirements of General Electric Specification 351A7620
| Specifications | 743 | 744 |
| Hydraulic Data | ||
| Rated Flow* | 75 to 95 l/min (20 to 25 gpm) | 190 to 400 l/min (50 to 100 gpm) |
| Standard Configurations | 95 l/min (25 gpm) | 190, 265 l/min (50, 70 gpm) |
| Max. Operating Pressure | 210 bar (3,000 psi) | 210 bar (3,000 psi) |
| Performance Data | ||
| 100% Step Response** | 25 ms | 110 to 170 ms |
| Frequency Response*** | 45 Hz | 7 Hz |
| Electrical Data | ||
| Rated Signal**** | 8 to 60 mA | 17 to 96 mA |
| Standard Configurations | 16, 48 mA | 17, 34.5, 96 mA |
| Physical Data | ||
| Size (Mounting Pattern) | Moog Standard | |
| Weight | 1.54 kg (3.4 lbs) | 8.38 kg (18.5 lbs) |
| Additional Options | Intrinsically Safe, Magnetic Null Adjust, Vented Motor Cap, Reverse Polarity Contact Industrial Application Engineering for additional Flow, Pressure and other options | Contact Industrial Application Engineering for additional Flow, Pressure and other options |
* @ ∆p 70 bar (1,000 psi)
** Response at 3,000 psi System Pressure
*** at 90° Phase Lag
**** Single Coil
