Pump 1 delivers fluid through flow-control valve 2 to the right end of cylinder 3, moving piston 4 to the left. At this, the spool of valve 5 is in the position shown. At the end of the stroke of piston 4, when it stops, the pressure increases in the left end of valve 5, shifting the spool to the right and connecting the delivery line of pump 1 to the right end of cylinder 6. When piston 7 has moved to the left and stops, the pump begins to deliver fluid to cylinder 8. The pistons and valve spools are returned to the initial position by a special arrangement (not shown). Relief valve 9 protects the system against overloads.
$4204$CHP,Dr$