Proportional Directional Valve KFTG4V KFDG4V
The KFTG4V series from Vickers (now part of Eaton Group) is a proportional directional control valve commonly used in hydraulic systems to achieve precise flow control and directional switching. Application scenarios: injection molding machines, presses, metallurgical equipment, and other applications that require precise speed/direction control.
Basic characteristics
-Type: Electro hydraulic proportional directional valve with valve core position feedback (LVDT).
-Function: Control the direction and magnitude of flow through the proportion of electrical signals, suitable for open-loop or closed-loop systems.
-Structure: Typically designed as a four-way valve (4 ports: P, T, A, B) with a slide valve structure.
Typical model examples
-KFTG5V (same series reference):
-Specification: NG10 (diameter 10mm), maximum flow rate of about 40-60 L/min (depending on pressure difference).
-Pressure rating: up to 350 bar.
-Current input: ± 10V or 4-20mA (requires amplifier such as VT-5000 series).
Electrical control
-Amplifier: A dedicated proportional amplifier (such as VT-5000) is required to provide flutter signals to reduce hysteresis.
-Feedback: Built in LVDT (Linear Variable Differential Transformer) real-time monitoring of valve core position to improve control accuracy.
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