Vickers | KHDG4V30215745121
KHDG4V30215745121
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The KHDG4V30215745121 valve belongs to the DG5 Two-Stage Directional Valves series from Vickers and serves hydraulic automation circuits by routing flow through proportional pilot operation. Actuation is solenoid controlled, with the solenoid located at the B port end to simplify cable runs on a manifold. A 24 V DC coil drives the pilot stage, while a plain manual override lets technicians shift the spool during commissioning or power loss. A feedback sensor is integrated even though no on-board electronics are present, so position data can be read by external hardware. Electrical connection is made with an ISO 4400 plug, and the mounting interface follows ISO 4401-03 / NFPA D03 / CETOP 3 patterns for direct installation on standard subplates.
The unit mounts on a subplate and is built as a single-stage valve, keeping pressure drop low and response predictable. Because it is a proportional pilot type, metering changes smoothly with coil current when the system uses antiwear oils or non-alkyl phosphate esters. Fluid cleanliness must be maintained at 17/15/12 to preserve spool clearance and sensor accuracy. There is no command input or digital communication protocol; modulation is achieved solely by the current supplied to the coil. Continuous service is permitted up to a fluid temperature of 70 °C, beyond which seal life may decrease. These features give the KHDG4V30215745121 reliable performance in hydraulic power units that rely on external electronics for signal processing.
Technical Specifications
Actuation Type
Solenoid Controlled
Build Orientation
Solenoid At B Port End
Coil Voltage
24 V DC
Command Input
None
Communication Protocol
None
Electrical Connection
ISO 4400
Feedback Sensor
Yes
Fluid Cleanliness
17/15/12
Fluid Compatibility
Antiwear Oils; Non-Alkyl Phosphate Esters
Interface
ISO 4401-03/NFPA D03/CETOP 3
Manual Override
Plain
On-board Electronics
No
Stage
Single Stage
Valve Mount Type
Subplate
Valve Type
Proportional Pilot
Working Temp Max
70 C
1620 Old Apex Road
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