Full definition
High-precision hydraulic valve with internal position feedback providing extremely accurate control of flow and pressure. Frequency response: -3dB at 100-400 Hz. Hysteresis: <0.1%. Command signal: ±10 mA or ±10 VDC. Requires very clean oil: ISO 4406 cleanliness class 14/11. Applications: CNC machine tools, precision presses, motion simulators, robotics. Brands: Moog (D633), Parker (72 series), Bosch Rexroth (4WSE).