Vickers | KBFDG4V-3-33C20N-Z-PH7-H7-10
KBFDG4V-3-33C20N-Z-PH7-H7-10
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The KBFDG4V-3-33C20N-Z-PH7-H7-10 valve belongs to the Directional Control Valves series and is manufactured by Vickers for proportional hydraulic automation. It operates from a 24 VDC supply that powers the on-board driver and solenoids. Control wiring is handled through a 7-pin plug with an enable line, and the valve will only energize when the enable voltage reaches 8.5 V, preventing accidental starts. The driver modulates the coils at a 10 kHz PWM frequency for smooth spool movement with minimal audible noise. A dual, spring-centered solenoid arrangement returns the spool to neutral when power is removed, while the neutral condition keeps port P closed and allows ports A and B to bleed to tank. Meter-in/meter-out metering enables accurate bidirectional flow regulation. The unit is rated for 20 L/min at a 5 bar pressure drop, and ports P, A, and B can be pressurized to 350 bar, so it handles high-pressure circuits.
An IP67 ingress protection rating seals the electronics and spool assembly against dust and temporary immersion for use in harsh environments. The design omits a manual override so unintended mechanical actuation is impossible during maintenance. A maximum differential input offset of 100 mV limits command error and preserves linear flow control, while a 3 A maximum supply current guides power-supply sizing and prevents coil overheating. A monitor output of ±10 V on pin F provides real-time feedback of the demanded spool position to external controllers. The ISO 4401-03 (D03) mounting pattern lets the valve bolt directly to standard subplates. A measured 17 ms step response from 0 to 100 % command supports rapid pressure or speed changes in closed-loop systems, bringing predictable performance and straightforward integration into mobile or industrial hydraulic manifolds.
Technical Specifications
Electrical Connection
7-Pin Plug With Enable (PH7)
Enable Threshold Voltage
8.5 V
Ingress Protection
IP67
Manual Override
None
Max Differential Input Offset
100 mV
Max Supply Current
3 A
Metering Type
Meter-In/Meter-Out
Monitor Output
±10 V (Pin F)
Mounting Pattern
ISO 4401-03 (D03)
Nominal Flow Rating
20 L/min (Δp 5 bar)
Pressure Rating (p,a,b)
350 bar (5000 psi)
Pwm Frequency
10 kHz
Solenoid Configuration
Dual, Spring Centered
Spool Center Condition
P Closed, A/B Bleed To T
Step Response (0–100%)
17 ms
Supply Voltage
24 VDC
1620 Old Apex Road
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