D661 Series Servo-Proportional Valve Products

Valve Construction:

A Two Stage Flow Control Proportional Valve with a ServoJet?Pilot Stage.?An LVDT is attached to the spool to provide spool position feedback.?An internal loop is closed around the spool position.

Typical Applications:

Wood Industry - Set Saw Positioning, Velocity Control and Edge Guide Positioning

Technical Data - Standard:

• Port Pattern: ISO 4401 - 05 - 05 - 0 - 94
• Rated Flow (@ 150 psi [10.5 bar]pressure drop):8 gpm [30 l/min] to 20 gpm [80 l/min]
• Rated Flow (@ 1000 psi [70 bar] pressure drop): 20 gpm [76 l/min] to 54 gpm [204 l/min]
• Operating Pressure: 5000 psi [350 bar]
• Step Response (@ 3000 psi [210 bar] for 100% stroke): 26 ms

Technical Data - High Response:

• Port Pattern: ISO 4401 - 05 - 05 - 0 - 94
• Rated Flow (@ 150 psi [10.5 bar]pressure drop):8 gpm [30 l/min] to 20 gpm [80 l/min]
• Rated Flow (@ 1000 psi [70 bar] pressure drop): 20 gpm [76 l/min] to 54 gpm [204 l/min]
• Operating Pressure: 5000 psi [350 bar]
• Step Response (@ 3000 psi [210 bar] for 100% stroke): 18 ms

Literature:

 D660 Series Servo-Prop. Control Valves with Integrated Electronics (12902Kb)

 D661 Series Installation and Operation Instructions (1100Kb)

 D661-G....A Series Servovalve With Bushing and Integrated 24 Volt Electronics ISO 4401 Size 05 (593Kb)
 641 to D661 Series Proportional Valve Conversion (1630Kb)