September 12, 2025

609 FF-131 Electro-Hydraulic Flow Control Servo Valve

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  • Model No.: FF-131
  • Precision Control: Custom Design
  • Rated Current: 15 or 40 mA
  • Affordable Replacement for Moog: Moog G761
  • Specification: National Standard
  • HS Code: 848120
  • Power: Hydraulic
  • Leading Manufacturer and Supplier: Precision Control System and Product
  • Rated Flow: 6.5, 16.5, 32.5, 50, 65 or 100 L/Min
  • Trademark: 609
  • Origin: Nanjing, China
FF-131

Double Flapper-Nozzle Force Feedback, Two Stage Electro-Hydraulic Flow Control Servo Valve

Affordable Replacement for Moog G761
  1. High performance, fast dynamic response, reliable operation, and long service life.
  2. Die-forged aluminum body, compact design, and lightweight construction.
  3. Mechanical null adjustment available for user customization if needed.
  4. Easy-to-replace protection filter for maintenance convenience.

Performance Data:

ITEM MODEL FF-131/100 MODEL FF-131/101 MODEL FF-131/102 MODEL FF-131/125 MODEL FF-131/103 MODEL FF-131/104
Supply Pressure [MPa] 1.4~21 (28 allowable)
Rated Supply Pressure Ps [MPa] 21 (28 allowable)
Rated Flow Qn [L/min] 6.5 16.5 32.5 50 65 100
Rated Current In [mA] 15 15 15 15 15 40
Hysteresis [ % ] ≤3 ≤3 ≤3 ≤3 ≤3 ≤3
Threshold [ % ] ≤1 ≤1 ≤1 ≤1 ≤1 ≤1
Linearity [ % ] ≤7.5 ≤7.5 ≤7.5 ≤7.5 ≤7.5 ≤7.5
Symmetry [ % ] ≤10 ≤10 ≤10 ≤10 ≤10 ≤10
Pressure Gain [%Ps/1% In] >30 >30 >30 >30 >30 >30
Internal Leakage [L/min] (7 MPa) 0.7 0.9 1.4 2 3 3
Null Bias [ % ] ≤±3 ≤±3 ≤±3 ≤±3 ≤±3 ≤±3
Null Shift with Supply Pressure (80~110% Ps) [ % ] ≤±2 ≤±2 ≤±2 ≤±2 ≤±2 ≤±2
Null Shift with Return Pressure (0~20% Ps) [ % ] ≤±2 ≤±2 ≤±2 ≤±2 ≤±2 ≤±2
Null Shift with Temperature (Each 56°C change) [ % ] ≤±4 ≤±4 ≤±4 ≤±4 ≤±4 ≤±4
Frequency Response Amplitude Ratio with (-3dB) [Hz] ≥100 ≥100 ≥100 ≥100 ≥100 ≥100
Phase Lag with (-90°) [Hz] ≥100 ≥100 ≥100 ≥100 ≥100 ≥100
Working Temperature [ºC] -30~+100 -30~+100 -30~+100 -30~+100 -30~+100 -30~+100
Net Weight [kg] 1 1 1 1 1 1
Rated Current, Coil Resistance and Inductance

Resistance of Each Coil at 20ºC (Ω) Rated Current (mA) Approximate Coil Inductance (H)
Differential, parallel or individual coils series series
FF-131/100 200 15 7.5 ≈5
FF-131/101 200 15 7.5 ≈5
FF-131/102 200 15 7.5 ≈5
FF-131/125 200 15 7.5 ≈5
FF-131/103 200 15Reciprocating Car Washing Machine

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