Vickers | KDG4V32C28SZMUH760
KDG4V32C28SZMUH760
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The KDG4V32C28SZMUH760 proportional valve belongs to the KDG Non-feedback Proportional Valves series from Vickers and is intended for controlled flow and directional change in hydraulic automation circuits. It bolts to manifolds with the ISO-4401-AB-03-4-A mounting pattern, allowing interchange with other size 03 components. A type 2 closed-center spool provides blocked ports at the neutral position, while the C spring-centered dual-solenoid arrangement re-centers the spool when both coils are de-energized. Meter-out control is used so the valve modulates exhaust flow rather than supply flow to manage actuator speed. The unit supports a rated flow of 28 L/min yet remains responsive at the minimum recommended flow of 1.4 L/min. System pressure can rise to 350 bar, and a pressure drop through the four-way paths should stay within the 210 bar limit to maintain stable performance.
Electrical actuation is based on a 24 V DC coil that draws up to 1.6 A under maximum load. Coil resistance is 7.3 ohms at 20 °C, and the inductance measured at 1000 Hz is 20 mH, factors that influence driver design and switching behavior. Continuous duty is possible because the coil is rated for a 100 % ED operating factor, so temperature rise remains within safe limits during prolonged energization. Connection is made through a DIN 43650 (ISO 4400) interface to simplify maintenance and field replacement. A 25 ms step response from 0 to 100 % command supports fast position control in servo loops, while the tank line can handle pressures up to 210 bar without risk of back-pressure damage.
Technical Specifications
Coil Connection
DIN 43650 (ISO 4400)
Coil Inductance (1000 Hz)
20 mH
Coil Resistance (20 C)
7.3 ohms
Coil Voltage
24 V DC
Duty Factor
100% ED
Max Coil Current
1.6 A
Max Operating Pressure
350 bar
Max Recommended Pressure Drop (4-way)
210 bar
Max Tank Line Pressure
210 bar
Metering
Meter-Out
Minimum Recommended Flow
1.4 L/min
Mounting Pattern
ISO-4401-AB-03-4-A
Rated Flow
28 L/min
Spool Type
2 (Closed Center)
Spool/spring Arrangement
C (Spring-Centered, Dual Solenoid)
Step Response (0–100%)
25 ms
1620 Old Apex Road
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