Audited Supplier
FF-502
Hydraulic
Custom Design
Null Adjustment
10, 20, 40, 60, 80 L/Min
100mA
Moog G631
609
Carton
national standard
Nanjing China
848120
Product Description
FF-502
Double flapper-nozzle force feedback, two stage electro-hydraulic flow control servo valve
Affordable replacement for Moog G631
Features:
Rated current, coil resistance and inductance
Double flapper-nozzle force feedback, two stage electro-hydraulic flow control servo valve
Affordable replacement for Moog G631
Features:
- An effective anti-contamination industrial servo valve, high reliability and quality performance.
- Mechanical null adjustment available for customers to adjust valve null bias.
- Manual override available to operate valve manually.
- An optional fifth supply port available on order to provide fluid to flapper nozzle stage.
- External filter, protection filter easy to replace.
Performance data:
| ITEM | MODEL FF-502 | |
| SUPPLY PRESSURE[MPa] | 2~28 | |
| RATED SUPPLY PRESSURE Ps[MPa] | 21 | |
| RATED FLOW Qn[L/min](valve pressure drop 7MPa) | 10,20,40,60, 80 | |
| RATED CURRENT In [mA] | 100 | |
| HYSTERESIS [ % ] | ≤5 | |
| THRESHOLD [ % ] | ≤1 | |
| LINEARITY[ % ] | ≤7.5 | |
| SYMMETRY[ % ] | ≤10 | |
| PRESSURE GAIN[%Ps/1% In] | >30 | |
| INTERNAL LEAKAGE[L/min] | ≤3.5 | |
| NULL BIAS[ % ] | ≤±3 | |
| LAP[ % ] | -2.5~ +2.5 | |
| NULL SHIFT WITH SUPPLY PRESSURE (80~110% Ps)[ % ] | ≤±4 | |
| NULL SHIFT WITH RETURN PRESSURE (0~20% Ps)[ % ] | ≤±4 | |
| FREQUENCE RESPONSE | AMPLITUDE RATIO WITH (-3dB)[ Hz ] | ≥17 |
| PHASE LAG WITH (-90°)[ Hz ] | ≥35 | |
| WORKING TEMPERATURE[ ºC ] | -30~ +95 | |
| NET WEIGHT[ kg ] | 2.3 | |
Rated current, coil resistance and inductance
| RESISTANCE OF EACH COIL AT 20ºC(Ω) | RATED CURRENT (mA) | PROXIMATE COIL INDUCTANCE(H) | ||||
| Differential, parallel or individual coils | series | series | individual | parallel | ||
| 28 | 100 | 50 | 0.8 | 0.25 | 0.2 | |
