Moog Servo Valves For Analog Signals

Moog Servo Valves For Analog Signals Series D638 And D639

Directly driven by linear force motor: No pilot flow required

Linear force motor with high force range (improves operating limits): No flow limitations

Directly driven design: Pressure-independent dynamic performance

Low current consumption at and near hydraulic null

Spool is spring-centered at loss of power supply, causing actuator to stop

Integrated digital electronics with integrated pressure transducer allows a high degree of flexibility

Technical Specifications
Rated Flow: 5 to 100 l/min (1.3 to 26.3 gpm) @ ∆p 35 bar (500 psi) per land

Maximum Flow: 180 l/min (47 gpm) size 05

Maximum Operating Pressure: 350 bar (5,000 psi)

Mounting Pattern: ISO 4401 Size 03 and 05 (NG 6 and 10)

100% Step Response: 8 ms @ 210 bar (3,000 psi)

Electrical Supply Voltage: 24 VDC (18 to 32 VDC)

Rated Signal Options: ±10 V, ±10 mA, and 4-20 mA

Additional Options: Bus Interface