Below is a list of Hydraulic Manifolds manufacturers from Vernon Hills, Illinois. Hydraulic manifolds are devices that regulate fluid flow between components in a hydraulic system. They let an operator know how much fluid is flowing between the pump and actuators, the hydraulic devices that move or control a mechanism. Manifolds are composed of a variety of hydraulics valves that are connected to each other within the hydraulic system; the combinations of these valves are what enable complex actions and movements.