Figure 15From: Present Status and Prospect of High-Frequency Electro-hydraulic Vibration Control TechnologyNew type of 4-way high-speed rotary-valve: a leakage from rotor to stator; b leakage from control shaft to rotor. 1. Oil port B; 2. Low pressure oil port; 3. Control shaft; 4. Oil port A; 5. High pressure oil port; 6. Stator; 7. RotorBack to article page