78 Series Servovalve Products
Valve Construction:
Two Stage Flow Control Servo Valve with Mechanical Feedback Pilot Stage.
Typical Applications:
Wood Products and Material Testing: Position and Velocity Loops.
Technical Data: Standard
- Port Pattern: 1.75" Dia Circle Bolts on 2.375 in [6.03 cm] x 3.625 in [9.2 cm] Rectangle
- Rated Flow (@ 1000 psi [70 bar] pressure drop): 20 gpm [77 l/min] to 40 gpm [150 l/min]
- Operating Pressure: 3000 psi [210 bar]
- Step Response (@ 3000 psi [210 bar] for 100% stroke): 25 - 35 ms
Technical Data: High Response
- Port Pattern: 1.75" Dia Circle Bolts on 2.375 in [6.03 cm] x 3.625 in [9.2 cm]Rectangle
- Rated Flow (@ 1000 psi [70 bar] pressure drop): 20 gpm [77 l/min] to 30 gpm [114 l/min]
- Operating Pressure: 3000 psi [210 bar]
- Step Response (@ 3000 psi [210 bar] for 100% stroke): 10-18 ms
Literature:
 78 Series Servovalve (3507Kb)
 78 Series Installation and Operation Instructions - Electrohydraulic Servovalve (796Kb)
78N Series Explosion-Proof Servovalve Products
Valve Construction: ??/h4> Two Stage Flow Control Servovalve with Mechanical Feedback Pilot Stage.
Typical Applications:
Wood Products and Material Testing: Position and Velocity Loops.
Technical Data - Standard:
• Port Pattern: 1.75" Diameter Circle Bolts on 2.375 in [6.03 cm] x 3.625 in [9.2 cm] Rectangle
• Rated Flow (@ 1000 psi [70 bar] pressure drop):20 gpm [77 l/min] to 40 gpm [150 l/min]
• Operating Pressure: 3000 psi [210 bar]
• Step Response (@ 3000 psi [210 bar] for 100% stroke): 25 to 35 ms
Technical Data - High Response:
• Port Pattern: 1.75" Diameter Circle Bolts on 2.375 in [6.03 cm] x 3.625 in [9.2 cm] Rectangle
• Rated Flow (@ 1000 psi [70 bar] pressure drop):20 gpm [77l/min] to 30 gpm [114 l/min]
• Operating Pressure: 3000 psi [210 bar]
• Step Response (@ 3000 psi [210 bar] for 100% stroke): 10 to 18 ms.
Literature:
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