A cascade trim (10, 110) for a fluid control valve, the cascade trim (10, 110) comprising: a valve cage (12, 112) defining a valve inlet and a valve outlet; and a valve stem (14, 114) reciprocally moveable within the valve cage (12, 112), the valve cage (12, 112) and valve stem (14, 114) each being configured to collectively define a first fluid passageway column (30, 130) and a second fluid passageway column (32, 132), each of the first and second fluid passageway columns (30, 32, 130, 132) extending between the valve inlet and the valve outlet; wherein reciprocal movement of the valve stem (14, 114) relative to the valve cage (12, 112) causes selective constitution and division of both the first fluid passageway column (30, 130) and the second fluid passageway column (32, 132); wherein the first fluid passageway column (30, 130) is formed to exhibit flow characteristics that differ from the second fluid passageway column (32, 132); characterized in that each of the first and second fluid passageway columns (30, 32, 130, 132) extend at least partially through the valve cage (12, 112) and the valve stem (14, 114); the valve stem (14, 114) being moveable between: a closed position relative to the valve cage (12, 112), wherein both the first and second fluid passageway columns (30, 32, 130, 132) are closed to prevent fluid from flowing between the valve inlet and valve outlet through the first and second fluid passageway columns (30, 32, 130, 132); a first passageway position wherein the first fluid passageway column (30, 130) is open and the second fluid passageway column (32, 132) is closed to allow fluid to flow between the valve inlet and valve outlet through the first fluid passageway column (30, 130); and a second passageway position wherein the second fluid passageway column (32, 132) is open and the first fluid passageway column (30, 130) is closed to allow fluid to flow between the valve inlet and valve outlet through the second fluid passageway column (32, 132). a valve cage (12, 112) defining a valve inlet and a valve outlet; and a valve stem (14, 114) reciprocally moveable within the valve cage (12, 112), the valve cage (12, 112) and valve stem (14, 114) each being configured to collectively define a first fluid passageway column (30, 130) and a second fluid passageway column (32, 132), each of the first and second fluid passageway columns (30, 32, 130, 132) extending between the valve inlet and the valve outlet; wherein reciprocal movement of the valve stem (14, 114) relative to the valve cage (12, 112) causes selective constitution and division of both the first fluid passageway column (30, 130) and the second fluid passageway column (32, 132); wherein the first fluid passageway column (30, 130) is formed to exhibit flow characteristics that differ from the second fluid passageway column (32, 132); characterized in that each of the first and second fluid passageway columns (30, 32, 130, 132) extend at least partially through the valve cage (12, 112) and the valve stem (14, 114); a closed position relative to the valve cage (12, 112), wherein both the first and second fluid passageway columns (30, 32, 130, 132) are closed to prevent fluid from flowing between the valve inlet and valve outlet through the first and second fluid passageway columns (30, 32, 130, 132); a first passageway position wherein the first fluid passageway column (30, 130) is open and the second fluid passageway column (32, 132) is closed to allow fluid to flow between the valve inlet and valve outlet through the first fluid passageway column (30, 130); and a second passageway position wherein the second fluid passageway column (32, 132) is open and the first fluid passageway column (30, 130) is closed to allow fluid to flow between the valve inlet and valve outlet through the second fluid passageway column (32, 132).