Steel ball fortune telling _ bead fortune telling

The hydraulic station suddenly has no pressure. What's the matter with turning it off and on again?

The situation you are talking about should be the problem of the oil pump. In the process of pressure, the pressure reaches the maximum, and then the oil pump suddenly loses pressure. Restart the oil pump after stopping, and there is pressure again.

This situation should be caused by the decrease of spring pressure under the steel ball in the center of the return disc.