Will a single control valve work a double acting hydraulic ram?

A single control valve can work a double-acting hydraulic ram, but it requires proper configuration. The valve must be capable of directing fluid to alternate sides of the ram to enable extension and retraction. Typically, a double-acting ram would use a double-acting valve or a two-position, four-way valve to efficiently control both actions. It's essential to ensure that the valve can handle the flow and pressure requirements of the specific application.