A flow control device designed to be positioned at a junction area between a first line carrying a first fluid and a second line carrying a second fluid towards the first line, the flow control device comprising: - at least one wall member forming at least part of the peripheral wall of the first line, said wall member having an opening and being movable so as to reduce the cross-section of the first line, in the vicinity of the opening, from a full section state to a reduced section state, in use; - a valve comprising: - a housing secured to the wall member and having an inner passageway between a first port and a second port in fluid communication with the second line; - a shutter which is at least partially mounted in said housing and which can move in said housing between a closed position, in which the shutter closes the inner passageway, and an open position, in which the second fluid can flow through said inner passageway; - an actuator connected to the shutter, which can be moved with respect to the housing, and accordingly move the shutter in said housing, between a first position, corresponding to the closed position of the shutter, and a second position, corresponding to the open position of the shutter, the relative position between the housing and the wall member remaining unchanged during this movement of the actuator; wherein the actuator is arranged to be further movable from its second position to a third position and to cause, during this further movement, a move of the valve from a neutral position towards a sucking position, and to cause accordingly a move of the wall member secured to the housing, from its full section state towards its reduced section state; characterized in that • the first port is in fluid communication with the wall member opening; and in that • the housing is secured to the wall member in such a way that the first port substantially coincides with the wall member opening. - at least one wall member forming at least part of the peripheral wall of the first line, said wall member having an opening and being movable so as to reduce the cross-section of the first line, in the vicinity of the opening, from a full section state to a reduced section state, in use; - a valve comprising: - a housing secured to the wall member and having an inner passageway between a first port and a second port in fluid communication with the second line; - a shutter which is at least partially mounted in said housing and which can move in said housing between a closed position, in which the shutter closes the inner passageway, and an open position, in which the second fluid can flow through said inner passageway; - a housing secured to the wall member and having an inner passageway between a first port and a second port in fluid communication with the second line; - a shutter which is at least partially mounted in said housing and which can move in said housing between a closed position, in which the shutter closes the inner passageway, and an open position, in which the second fluid can flow through said inner passageway; - an actuator connected to the shutter, which can be moved with respect to the housing, and accordingly move the shutter in said housing, between a first position, corresponding to the closed position of the shutter, and a second position, corresponding to the open position of the shutter, the relative position between the housing and the wall member remaining unchanged during this movement of the actuator; • the first port is in fluid communication with the wall member opening; and in that • the housing is secured to the wall member in such a way that the first port substantially coincides with the wall member opening.