WK-HYDRAULIC
WK servo valve SFL212
| WK P/N | MOOG P/N |
| SFL218 Series | MOOG 760/761 Series |
| SFL218A Series | MOOG G631 Series |
| SFL218B Series | MOOG 06 Series And P&T EL-T76.00.MO |
| SFL214、216 Series | MOOG 072 Series |
| SFL212A Series | MOOG 30 Series |
| SFL212/B Series | MOOG 31 Series |
| SFZ141 Series | MOOG D633 Series |
| SFZ142 Series | MOOG D634 Series |
| SFL317 Series | MOOG 792 Series |
| SFL316 Series | MOOG 791 Series |
| SFD234 Series | MOOG D661 Series |
SFL212 Electro-hydraulic Flow Control Servo Valve
Performance indices
|
Item |
Unit |
Index |
|
| Supply pressure Ps |
MPa |
2～25 |
|
|
Rated supply pressure Pn |
MPa |
21 |
|
|
Rated flow Qn () |
L/min |
20 |
|
| Rated current In |
mA |
40 |
|
| Hysteresis |
% |
≤4 |
|
| Threshold |
% |
≤0.5 |
|
| Nonlinearity |
% |
≤±5 |
|
| Unsymmetry |
% |
≤±5 |
|
| Pressure gain |
% |
＞30 |
|
| Internal leakage |
L/min |
≤2.0 |
|
| Null bias |
% |
≤±1 |
|
| Null shift with temperature (ΔT=56℃) |
% |
≤±2 |
|
| Null shift with supply pressure of (80～110%) Pn |
% |
≤±2 |
|
| Null shift with return pressure of (0～20%) Pn |
% |
≤±2 |
|
|
Frequency response |
Amplitude ratio with (-3dB) |
Hz |
≥100 |
| Phase lag with (-90°) |
Hz |
≥100 |
|
| Working temperature |
℃ |
-15～100 |
|
| Weight |
kg |
≈0.4 |
|
Electrical interface
|
Item |
Unit |
Single coil |
Parallel coil |
Series coil |
|
Coil resistance |
Ω |
100 |
50 |
200 |
|
Rated current |
mA |
40 |
40 |
20 |
|
Coil inductance |
H |
1 |
0.5 |
2 |
Overall and installation dimensions
Overall dimensions
Installation dimensions
*Requirement: Flatness less than 0.01mm, roughness below .
| 0 | P | A | B | T | G | F1 | F2 | F3 | F4 |
| Ф5 | Ф5 | Ф5 | Ф5 | ф3 | M4 | M4 | M4 | M4 | |
| X | 22 | 14 | 30 | 22 | 32 | 0 | 44 | 44 | 0 |
| Y | 9 | 17 | 17 | 25 | 29 | 0 | 0 | 34 | 34 |
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