Hydraulic Manifold, Various Combination of Valves

A manifold is composed of assorted hydraulic valves connected to each other. It is the various combinations of states of these valves that allow complex control behavior in a manifold.

Simply put, a hydraulic manifold distributes hydraulic oil throughout a circuit.  The flow of pressurized oil is regulated by hydraulic valves installed within the manifold and directed through hoses to some kind of work device, such as a hydraulic motor or a cylinder.