D681 Series Servo-Proportional Valve Products

Valve Construction:

A Two Stage Proportional Control Valve with a Direct Drive (D633 Series) 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:

Die Casting, Presses

Technical Data:

• 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): 11 ms

 D680 Series Mini Direct Drive Valve Piloted Servo-Proportional Control Valves (12332Kb)