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Registered
Join Date: May 2000
Location: Los Alamos, NM, USA
Posts: 6,044
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Some thought and research has provided this possible explanation:
It is used to actuate simultaneously, with matching flow to both cylinders, with one valve, two cylinders that are plumbed in series. The rod end of the first cylinder pushes out less fluid during the stroke. This volume of this fluid is effectively multiplied by routing it into the fixed dummy cylinder rod end. The non-rod end of the dummy cylinder feeds the second cylinder of the two in series. To reverse direction the rod end of the second cylinder is provided with the hydraulic pressure.
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