Vickers | KDG3V833C330NE20
KDG3V833C330NE20
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The KDG3V833C330NE20 is produced by Vickers within the KDG Non-feedback Proportional Valves series and modulates flow and pressure in hydraulic automation circuits. The valve is hydraulic pilot operated, allowing the spool to move with pilot pressure instead of a direct electrical actuator. A spring centered build returns the spool to neutral when pilot pressure is released. Because the design omits a feedback sensor, command signals remain open loop and depend on external controls. Flow is metered both into and out of the actuator ports, delivering 330 L/min (87.2 US gpm) through ports A and B. The assembly tolerates system pressures up to 350 bar (5000 psi) and bolts to subplates using the ISO 4401-08 (CETOP 8, NFPA D08) interface.
With an Ng size of 25, the unit handles large flow channels without excessive pressure drop. The internal passages are compatible with AW oils and non-alkyl phosphate esters, provided fluid cleanliness is maintained at 17/15/12. There are no on-board electronics, so a separate proportional amplifier must generate the pilot signal, and manual override is absent, preventing mechanical spool shifts during power loss. Overall dimensions are 326.644 mm (12.860 in) in length, 149.098 mm (5.870 in) in height, and 4.520 in in width, enabling accurate space planning. These characteristics allow the valve to integrate into high-pressure hydraulic systems while keeping the control architecture simple.
Technical Specifications
Actuation Type
Hydraulic Pilot Operated
Build Type
Spring Centered
Feedback Sensor
No
Fluid Cleanliness
17/15/12
Fluid Compatibility
AW Oils, Non-Alkyl Phosphate Esters
Manual Override
None
Maximum Pressure
350 bar (5000 psi)
Metering Configuration
Meter In / Meter Out
Mounting Interface
ISO 4401-08 (CETOP 8, NFPA D08)
Ng Size
25
On-board Electronics
No
Port Flow (a And B)
330 L/min (87.2 USgpm)
Product Height
149.098 mm (5.870 in)
Product Length
326.644 mm (12.860 in)
Product Width
4.520 in
1620 Old Apex Road
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