working principle:

   Inputting a current command signal to the coil of the torque motor will generate electromagnetic force to act on both ends of the armature, and the armature will therefore drive the baffle in the spring tube to deflect. The deflection of the baffle will reduce the flow rate of a certain nozzle, thereby changing the pressure on the side of the spool connected to this nozzle, pushing the spool to move to one side, and opening the oil supply port (P) and a control oil port. The passage between the oil return port (T) and the other control port communicates the oil path. At the same time, the displacement of the valve core also produces a force on the spring rod, which forms a force on the armature baffle assembly Restoring torque. When the restoring torque is balanced with the torque acting on the armature baffle due to the electromagnetic force of the torque motor, the baffle returns to the zero position, and the spool valve core maintains the open position of this equilibrium state until the input given signal occurs Variety.

  In short, the displacement of the spool is proportional to the magnitude of the input current signal. Under a constant valve port pressure drop, the load flow through the valve is proportional to the displacement of the spool.

1. Rated flow: 4～63L/min

2. Working pressure: oil port P, X, A and B: 35Mpa

3. Response time: 0～100% spool displacement 5ms

4. Resolution: ≤0.5%

5. Zero drift: temperature change 38℃＜2.0%

6. Oil temperature -29℃～135℃

7. Recommended cleanliness level: regular use ISO 4406＜14/11

                  Long life use ISO 4406＜13/10