A flow splitter comprising: an inlet conduit including an inlet end and a junction end , the inlet conduit disposed along a main flow axis extending between the inlet end and the junction end , the inlet end defining an inlet opening , the junction end defining first and second junction openings , the first junction opening being disposed in spaced relationship to the second junction opening , the inlet conduit defining an inlet passage extending between the inlet opening and the first and second junction openings ; a first outlet conduit in fluid communication with the first junction opening of the inlet conduit , the first outlet conduit including a discharge end defining a first discharge opening ; a second outlet conduit in fluid communication with the second junction opening of the inlet conduit , the second outlet conduit including a discharge end defining a second discharge opening ; and a junction portion disposed at the junction end of the inlet conduit , the junction portion disposed between the first junction opening and the second junction opening ; wherein the inlet conduit includes a contoured portion that defines a flow restriction in the inlet passage adjacent the junction portion , the contoured portion defining first and second guide channels , the flow restriction disposed laterally between the first and second guide channels along a transverse axis substantially perpendicular to the main flow axis , the first and second guide channels each having a cross-sectional area greater than the cross-sectional area of the flow restriction , the flow restriction having a maximum height (H 1 ) along a height axis , the height axis being perpendicular to both the main flow axis and the transverse axis , and the first and second guide channels each having a maximum height (H 2 , H 3 ) along the height axis which is larger than the maximum height (H 1 ) of the flow restriction . an inlet conduit including an inlet end and a junction end , the inlet conduit disposed along a main flow axis extending between the inlet end and the junction end , the inlet end defining an inlet opening , the junction end defining first and second junction openings , the first junction opening being disposed in spaced relationship to the second junction opening , the inlet conduit defining an inlet passage extending between the inlet opening and the first and second junction openings ; a first outlet conduit in fluid communication with the first junction opening of the inlet conduit , the first outlet conduit including a discharge end defining a first discharge opening ; a second outlet conduit in fluid communication with the second junction opening of the inlet conduit , the second outlet conduit including a discharge end defining a second discharge opening ; and a junction portion disposed at the junction end of the inlet conduit , the junction portion disposed between the first junction opening and the second junction opening ; wherein the inlet conduit includes a contoured portion that defines a flow restriction in the inlet passage adjacent the junction portion , the contoured portion defining first and second guide channels , the flow restriction disposed laterally between the first and second guide channels along a transverse axis substantially perpendicular to the main flow axis , the first and second guide channels each having a cross-sectional area greater than the cross-sectional area of the flow restriction , the flow restriction having a maximum height (H 1 ) along a height axis , the height axis being perpendicular to both the main flow axis and the transverse axis , and the first and second guide channels each having a maximum height (H 2 , H 3 ) along the height axis which is larger than the maximum height (H 1 ) of the flow restriction . <EOS>