Deskripsi
Servo Valve
- Series : D633, D634
- Brand : MOOG Inc.
The MOOG D633 and D634 series valves are direct-drive servo valves integrating electronic components and analog interfaces. These servo valves utilize a permanent magnet linear motor for direct drive, allowing direct movement of the valve spool without the need for a pilot oil. The products are available in nominal sizes 03 (D633) and 05 (D634) conforming to ISO 4401 standards. Developed to meet demanding customer requirements, this series of servo valves features high functional flexibility, pressure-independent dynamic response, high drive force, and low power consumption.
Performance characteristics :
Directly driven by a linear force motor: no pilot flow required.
High thrust range linear force motor (lifting operation): No flow limit
Direct-drive design: Pressure-independent dynamic performance
Low current consumption in and around the hydraulic zero position.
When power is off, the valve core remains in the center position with the spring: the actuator stops operating.
Optional features and accessories:
Optional leaking oil interface Y
Other fluids can be provided upon request.
Product Dimensions:
Technical parameters :
| Origin | USA |
| Valve structure | Single stage, with valve core and bushing |
| Installation method | ISO 4401-03-03-0-05 |
| Installation location | any |
| Dimensions conform to ISO 4401 standard | Size 03 |
| weight | 2.5 kg; 5.51 lbs |
| Storage temperature range | -40 to +80 ℃; -40 to +176 ℉ |
| Ambient temperature range | -20 to +60 ℃; -4 to +140 ℉ |
| Vibration resistance | 30 g, triaxial |
| Impact resistance | 50 g, 6 directions, 3 ms |
| MTTFd value (according to EN ISO 13849-1) | 150 years |
| Max work pressure | |
| P, A, B | 350 bar; 5,000 psi |
| T-port (no Y-port) | 50 bar; 725 psi |
| T-port (with Y-port) | 350 bar; 5,000 psi |
| Port Y | Oil tank depressurization |
| Rated flow rate (Δp N = 35 bar (500 psi) per valve core) | 5, 10, 20, 40 l/min; 1.3, 2.6, 5.3, 10.6 gpm |
| Max flow | 75 l/min; 19.8 gpm |
| Leakage flow (≈zero overlap), typical value 1) | 0.15, 0.3, 0.6, 1.2 l/min; 0.04, 0.08, 0.16, 0.32 gpm |
| hydraulic oil | Hydraulic fluid conforming to DIN 52524 Parts 1-3 and ISO 11158 standards |
| Temperature range | -20 to +80 ℃; -4 to +176 ℉ |
| Viscosity range at 38℃ and 100℉ | |
| Fit value | 15 to 100 mm²/s (cSt) |
| Max allowed value | 5 to 400 mm²/s (cSt) |
| Typical static and dynamic data | |
| Step response time | ≤ 12 ms |
| Typical threshold | 0.05% |
| Max threshold | <0.1% |
| Typical lag | 0.1% |
| Max lag | < 0.2% |
| Zero drift at ΔT = 55 K (131 ℉) | < 1.5% |
| Rated flow sampling deviation | < 10% |
Selection Guide Models:
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