Hydraulic manifolds

I was trying to figure out a way to activate the syringes that i will be using to represent a pneumatic hydraulic device. The idea i came up with uses a couple of motors and a gear system to move the plunger of the syringe up and down, activating the syringe on the other line. The intent originally was to create valves, which can be done for technologies proof of concept, but i decided to simplify by creating separate arrays of syringes within a manifold, where each array is activated separately. Here is a sketch showing such an array:

The strategy is to rig up the structure for the manifolds, and get the hydraulic network up, and then i will focus on some of the technical aspects of operating on it. If the motor, gear thing does not work, i might have to use muscle wire, or a servo motor.