Vickers | KDG3V533C80NE10
KDG3V533C80NE10
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The KDG3V533C80NE10 proportional valve belongs to the KDG Non-feedback Proportional Valves series manufactured by Vickers and is intended to modulate flow and direction in hydraulic automation. It is hydraulically pilot operated, so a low-pressure pilot circuit shifts the spool without large electromagnetic force. The valve mounts to manifolds that follow the ISO 4401-05 (NFPA D05/CETOP 5) interface, simplifying interchange with other cartridge blocks. Meter-in and meter-out ports provide balanced throttling of both supply and return flow, and each port can handle 80 L/min to satisfy medium-capacity actuators. Continuous service is supported by a maximum operating pressure of 315 bar, and the same 315 bar rating for fatigue pressure confirms endurance under cyclic loading. An external pilot supply keeps control pressure independent of the main line, and the design includes no manual override to prevent unintended spool movement. Compatibility with AW oils and non-alkyl phosphate esters broadens fluid options for varied plant specifications.
The valve’s control stage limits hysteresis to 4 %, while repeatability is held within 1 %, enabling consistent response to proportional commands. Overall dimensions of 215.9 mm in length, 70.358 mm in width, and 109.220 mm in height allow compact stacking on hydraulic manifolds. Fluorocarbon seals withstand elevated temperatures and aggressive additives, maintaining leakage integrity over prolonged duty cycles. Tank return passages tolerate up to 70 bar, which supports systems that maintain back pressure for counterbalance or line damping without risking seal failure. These characteristics make the KDG3V533C80NE10 a stable element for precise proportional control in presses, machine tools, and process automation.
Technical Specifications
Actuation Type
Hydraulic Pilot Operated
Fluid Compatibility
AW oils; non-alkyl phosphate esters
Height
109.220 mm
Hysteresis
4%
Interface
ISO 4401-05 (NFPA D05/CETOP 5)
Length
215.9 mm
Manual Override
None
Max Operating Pressure
315 bar
Max Tank Line Pressure
70 bar
Metering
Meter In / Meter Out
Pilot Supply
External
Rated Fatigue Pressure
315 bar
Rated Flow (per Port)
80 L/min
Repeatability
1%
Seal Material
Fluorocarbon
Width
70.358 mm
1620 Old Apex Road
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