I used to run a 1 pump 4 valve system (my first ever) just run 1 check valve to each cylinder same way a manifold works, if you want ALL the moves run 8 valves and have 4 'pump' valves and 4 'dump' valves, if you plumb the dump lines direct to the tank you can have 'panic' and 'sea saw' easily enough.
but the other guys are right, for the time and money (valves, hoses, fittings) you might just aswell get another pump.
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