A spool valve comprising: a housing defining a bore extending along a longitudinal axis, a supply port in fluid communication with said bore and configured for supplying a hydraulic fluid to said bore, a first load port in fluid communication with said bore and configured for directing the hydraulic fluid along a first flow path, a second load port in fluid communication with said bore and configured for directing the hydraulic fluid along a second flow path, and at least one exhaust port in fluid communication with said bore and configured for exhausting the hydraulic fluid from said housing; and a spool disposed within said bore and moveable between at least a first position and a second position, wherein said first position opens fluid communication between said supply port and said first load port, opens fluid communication between said second load port and said at least one exhaust port, and closes fluid communication between said supply port and said second load port, and wherein said second position opens fluid communication between said supply port and said second load port, opens fluid communication between said first load port and said at least one exhaust port, and closes fluid communication between said supply port and said first load port; said spool including a supply portion disposed axially along said longitudinal axis between a first land portion and a second land portion, characterized in that said supply portion defines a truncated pseudosphere configured for directing the hydraulic fluid to said first load port when said spool is in said first position and directing the hydraulic fluid to said second load port when said spool is in said second position, wherein said truncated pseudosphere defines a surface having a constant negative curvature, wherein said truncated pseudosphere includes a ridge disposed at a midsection of said supply portion, wherein said ridge includes a diameter greater than a diameter defined by any other section of said truncated pseudosphere, wherein said truncated pseudosphere includes a first half and a second half wherein said first half and said second half are mirror images of each other opposite the ridge wherein said supply portion includes a first curve portion disposed between the first half of the truncated pseudosphere and the first land portion, the first curve portion defining a diameter continuously decreasing in size along the longitudinal axis from said first land portion to said first half of said truncated pseudosphere, and wherein said supply portion includes a second curve portion disposed between said second half of said truncated pseudosphere and said second land portion, said second curve portion defining a diameter continuously decreasing in size along said longitudinal axis from said second land portion to said second half of said truncated pseudosphere. a housing defining a bore extending along a longitudinal axis, a supply port in fluid communication with said bore and configured for supplying a hydraulic fluid to said bore, a first load port in fluid communication with said bore and configured for directing the hydraulic fluid along a first flow path, a second load port in fluid communication with said bore and configured for directing the hydraulic fluid along a second flow path, and at least one exhaust port in fluid communication with said bore and configured for exhausting the hydraulic fluid from said housing; and a spool disposed within said bore and moveable between at least a first position and a second position, wherein said first position opens fluid communication between said supply port and said first load port, opens fluid communication between said second load port and said at least one exhaust port, and closes fluid communication between said supply port and said second load port, and wherein said second position opens fluid communication between said supply port and said second load port, opens fluid communication between said first load port and said at least one exhaust port, and closes fluid communication between said supply port and said first load port; said spool including a supply portion disposed axially along said longitudinal axis between a first land portion and a second land portion, characterized in that said supply portion defines a truncated pseudosphere configured for directing the hydraulic fluid to said first load port when said spool is in said first position and directing the hydraulic fluid to said second load port when said spool is in said second position, wherein said truncated pseudosphere defines a surface having a constant negative curvature, wherein said truncated pseudosphere includes a ridge disposed at a midsection of said supply portion, wherein said ridge includes a diameter greater than a diameter defined by any other section of said truncated pseudosphere, wherein said truncated pseudosphere includes a first half and a second half wherein said first half and said second half are mirror images of each other opposite the ridge wherein said supply portion includes a first curve portion disposed between the first half of the truncated pseudosphere and the first land portion, the first curve portion defining a diameter continuously decreasing in size along the longitudinal axis from said first land portion to said first half of said truncated pseudosphere, and wherein said supply portion includes a second curve portion disposed between said second half of said truncated pseudosphere and said second land portion, said second curve portion defining a diameter continuously decreasing in size along said longitudinal axis from said second land portion to said second half of said truncated pseudosphere.