This is a hydraulic circuit design problem. I need some ideas on controlling a hydraulic cylinder with two separate manual valves. The cylinder must be controlled by either of two people (in different locations) using manually operated 3-position, 4-way directional valves. The valves cannot be spring-centered. Even if one operator has left his valve in the A or B position, then I would like the other operator to be able to shift the cylinder in the other direction. Any ideas?
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