Servovalves and Servo-Proportional Valves

Pilot-Operated Proportional Valves for Analog Signals
D680 Series

ISO 4401 Size 05, 07, 08 and 10

Optimized design of valve bodies for high rated flow
Reduced pilot flow due to 2-stage valve with direct-operated pilot valve
Low range of minimum pilot pressure required
Excellent dynamic response due to high natural frequency of pilot stage
Different fail-safe options available allowing the best fit to application

Specifications

Hydraulic Data
Rated Flow
30 to 1,500 l/min (8 to 395 gpm) @ ∆p 5 bar (75 psi) per land
Maximum Flow
3,600 l/min (950 gpm) ISO size 10
Maximum Operating Pressure
350 bar (5,000 psi)
Mounting Pattern
ISO 4401 Size 05, 07, 08 and 10 (NG 10, 16, 25 and 32)
100% Step Response
10 to 40 ms @ 210 bar (3,000 psi)
Electrical Data
Supply Voltage
24 VDC (18 to 32 VDC)
Rated Signal Options
+/-10 V, +/-10 mA and 4-20 mA