Vickers | KDG3V833C330N20EN55
KDG3V833C330N20EN55
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The KDG3V833C330N20EN55 proportional valve is produced by Vickers for the KDG Non-feedback Proportional Valves series. It directs hydraulic flow in automated machinery by using hydraulic pilot operated actuation to shift the spool without mechanical linkage. A spring centered build returns the spool to neutral when the pilot signal is removed. The valve supports 330 L/min through the A port and the same 330 L/min through the B port, enabling balanced bidirectional flow. Meter in and meter out metering give predictable actuator speed control, while a maximum pressure rating of 350 bar permits use in high-pressure circuits. Mounting follows the ISO 4401-08 interface, which matches NFPA D08, CETOP 8, and NG25 manifold patterns.
There are no on-board electronics and no feedback sensor, so external controllers must generate the pilot signal and any closed-loop feedback. The valve lacks a manual override, eliminating the possibility of hand-actuated shifts during service. Viton seals withstand common AW hydraulic oils and non-alkyl phosphate esters that the design lists as compatible fluids. A required cleanliness level of ISO 4406 17/15/12 helps prevent wear and sticking in the precision spool lands. Physical dimensions are 326.644 mm in length, 114.808 mm in width, and 149.098 mm in height, allowing installation in standard valve stacks. These characteristics make the unit suitable for proportional flow control where consistent performance is needed without internal sensors.
Technical Specifications
A Port Flow
330 L/min
Actuation Type
Hydraulic Pilot Operated
B Port Flow
330 L/min
Build Type
Spring Centered
Feedback Sensor
No
Fluid Cleanliness
ISO 4406 17/15/12
Fluid Compatibility
AW Oils; Non-Alkyl Phosphate Esters
Interface
ISO 4401-08 (NFPA D08, CETOP 8, NG25)
Manual Override
None
Maximum Pressure
350 bar
Metering
Meter In / Meter Out
On-board Electronics
No
Product Height
149.098 mm
Product Length
326.644 mm
Product Width
114.808 mm
Seal Type
Viton
1620 Old Apex Road
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