A flow control device , comprising: a housing including: a primary valve body defining a primary inlet and an outlet of the flow control device ; a secondary valve body defining a secondary inlet of the flow control device , wherein the primary and secondary inlets share a common central axis (Xi) and a central axis of the outlet (Y) is perpendicularly disposed relative to the common central axis (Xi); and a chamber defined by an inner circumferential surface of the housing , the chamber extending between the primary and secondary valve bodies for fluidly connecting the primary and secondary inlets with the outlet ; and a valve member reciprocally mounted in the chamber to (i) block fluid communication between the secondary inlet and the outlet when fluid pressure into the primary inlet is higher than fluid pressure into the secondary inlet , and (ii) block fluid communication between the primary inlet and the outlet when fluid pressure into the secondary inlet is higher than fluid pressure into the primary inlet , characterized in that the valve member comprises a cylindrical disc slidably mounted in the chamber and having a longitudinal length, the valve member comprising a flow groove extending linearly from a planar face of the disc and in parallel to the common central axis (Xi) along an outer circumferential surface thereof, wherein the flow groove extends only partially along the longitudinal length of the valve member , the flow groove providing the only fluid passage past the planar face of the disc, wherein the flow groove is configured to fluidly communicate the secondary inlet with the outlet when the fluid pressure into the primary inlet is equal to the fluid pressure into the secondary inlet . a primary valve body defining a primary inlet and an outlet of the flow control device ; a secondary valve body defining a secondary inlet of the flow control device , wherein the primary and secondary inlets share a common central axis (Xi) and a central axis of the outlet (Y) is perpendicularly disposed relative to the common central axis (Xi); and a chamber defined by an inner circumferential surface of the housing , the chamber extending between the primary and secondary valve bodies for fluidly connecting the primary and secondary inlets with the outlet ; and a valve member reciprocally mounted in the chamber to (i) block fluid communication between the secondary inlet and the outlet when fluid pressure into the primary inlet is higher than fluid pressure into the secondary inlet , and (ii) block fluid communication between the primary inlet and the outlet when fluid pressure into the secondary inlet is higher than fluid pressure into the primary inlet , characterized in that the valve member comprises a cylindrical disc slidably mounted in the chamber and having a longitudinal length, the valve member comprising a flow groove extending linearly from a planar face of the disc and in parallel to the common central axis (Xi) along an outer circumferential surface thereof, wherein the flow groove extends only partially along the longitudinal length of the valve member , the flow groove providing the only fluid passage past the planar face of the disc, wherein the flow groove is configured to fluidly communicate the secondary inlet with the outlet when the fluid pressure into the primary inlet is equal to the fluid pressure into the secondary inlet . <EOS>