Position-controlled proportional directional valve

Details Position-controlled proportional directional valve Position-controlled proportional directional valve

1990-12-03

1992-09-08

Michalsky, Gerald A.

Fluid handling

Systems

Multi-way valve unit

91387, F15B 13043

Patent

active

051449838

ABSTRACT:
The main control piston (8) is controlled hydraulically by pilot control slide valves, operated in each case via two control magnets (4, 6) with force build-up proportional to the control current. In the case of failure of the electrical activation, the valve is always positioned in the center position by pressure centering and in the case of failure of the pilot control pressure it is positioned in the center position by spring centering.

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