MO-OG proportional valve D661 D662 D663 D664 D665 series D662-4196 D061-8132 Proportional Electro-hydraulic servo valve

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Product Description


MO-OG proportional valve D661 D662 D663 D664 D665 series D662-4196 D061-8132 Proportional Electro-hydraulic servo valve


MOOG servo valve is a two-stage valve. The first stage is the nozzle baffle plate, and its outlet pressure is controlled by the control signal. The second stage is the slide valve type, which executes the pressure from the control stage to the brake cylinder. When there is no signal, the servo valve baffle rests against the oil return nozzle due to the oil pressure at the outlet of the pressure nozzle. At this time, the oil pressure at the pressure port acts on the spool valve, so that the brake port is directly connected with the metering oil port, and the pressure at the brake port is consistent with the metering oil pressure controlled by the pilot. When the wheel angular speed detects that there is a deviation between the taxiing speed and the reference taxiing speed, The torque motor receives the deviation electrical signal. At this time, the torque motor drives the baffle to deflect towards the pressure nozzle to reduce the oil pressure acting on the upper end of the valve core. Under the action of the oil pressure at the lower end of the valve core, the valve core moves up and the metering pressure oil port is closed down, which will lead to the reduction of the pressure at the control port. When the pressure at the control port is reduced to a certain value, there will be the corresponding braking pressure.























































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0.0142 s.