with directional spool
valves,
HAWE leak-free directional seated
valves maintain a reliable operating pressure, but they also provide a high degree of switching reliability because dirt particles in the oil are flushed out continually when the
valve is open. Conversely, with directional spool
valves, greater hysteresis is anticipated. If the
valve stays in an energized position for a long time, the annular gap can get clogged up with dirt and cause the
valve to malfunction. 2) Efficient use of wind-generated...
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