Abstract: A fuel cell compound valve that opens and closes an inflow line and an exhaust line of a fuel cell stack for a hydrogen fuel cell vehicle includes a support frame having a first bore to which the exhaust line is connected and a second bore to which the inflow line is connected. A first rotation valve is configured to receive a driving torque of a motor installed in the support frame, rotate, and open and close the first bore. A second rotation valve is connected to the first rotation valve and is configured to open and close the second bore. A first coupler protrusion protrudes from a first shaft in a longitudinal direction and has at least one first flat surface perpendicular to the longitudinal direction. A second coupler protrusion protrudes from a second shaft in the longitudinal direction of the first shaft.

Abstract: A fuel cell compound valve that opens and closes an inflow line and an exhaust line of a fuel cell stack for a hydrogen fuel cell vehicle includes a support frame having a first bore to which the exhaust line is connected and a second bore to which the inflow line is connected. A first rotation valve is configured to receive a driving torque of a motor installed in the support frame, rotate, and open and close the first bore. A second rotation valve is connected to the first rotation valve and is configured to open and close the second bore. A first coupler protrusion protrudes from a first shaft in a longitudinal direction and has at least one first flat surface perpendicular to the longitudinal direction. A second coupler protrusion protrudes from a second shaft in the longitudinal direction of the first shaft.