A flow control element includes an element body formed as a unitary structure and disposed about a body axis. The element body includes a first surface, a second surface in spaced relation to the first surface, and an inner peripheral surface extending between the first and second surfaces and defining a central bore extending along the body axis. The element body additionally includes an outer peripheral surface extending between the first and second surfaces in spaced relation to the inner peripheral surface. A plurality of passageways extend between the inner peripheral surface and the outer peripheral surface, with each passageway having a pair of side surfaces extending in generally opposed relation to each other and a pair of beveled surfaces extending toward each other from respective ones of the pair of side surfaces.