Electrohydraulic Proportional Throttles

CVU-**-EFP1-3* Series

Basic Characteristics

Nominal sizes [ISO 7368 (DIN 24342)]:

06 (NG16)
08 (NG25)
09 (NG32)
10 (NG40)

Max. operating pressure: 315 bar (4500 psi)

Flow ratings: up to 900 L/min (238 USgpm)

Amplifier

Danfoss-Vickers model EEA-PAM-571-A, to be ordered separately. Power input 20-34V DC, 24V DC nominal.

General Description

Proportional throttle (restrictor) valves for use where one or more of the following requirements exist.

• Remote control of machine actuator speed, linear or rotary.
• Speed control in accordance with machine operating cycles or programs.
• Meter-in, meter-out or bleed-off application of the throttle valve itself.
• Pressure compensated flow control with the aid of a pressure hydrostat module, in any of the same three application modes.
• Smooth control of machine acceleration and/or deceleration.
• For industrial and mobile applications.

Features and Benefits

• New 09 (NG32) size.
• Valves suitable for unidirectional and bidirectional control of flow.
• 4 valve sizes offer choice of flow capacities
  06 (NG16): 190 L/min (50 USgpm) at 10 bar (145 psi) Δp.
  08 (NG25): 450 L/min (119 USgpm) at 10 bar (145 psi) Δp.
  09 (NG32): 700 L/min (185 USgpm) at 10 bar (145 psi) Δp.
  10 (NG40): 900 L/min (238 USgpm) at 10 bar (145 psi) Δp.
• Designed for zero leakage when closed.
• Common amplifier for any valve size minimizes inventory.
• 24V DC nominal supply to amplifier to suit state-of-art control systems.
• Choice of command signals.
• Acceleration and deceleration requirements can be adjusted on-site by “ramp” potentiometer.
• Facility for on-site adjustment of “deadband” compensation and “gain”.
• Setting-up and fault diagnosis eased by panel display and signal monitoring points.

Functional Symbol

CVU-**-EFP1

Wiring Connections