Abstract: A valve device (1) for fluid flow control includes two independent valves comprising two movable valve bodies (4, 5) within two valve spaces (V1, V2), wherein each valve body is controllable against the force of a return spring (7, 8) acting thereon. The invention is distinguished inthat the valve spaces (V1, V2) are located axially with respect to each other in one common housing (2, 3),that the housing between the two valve spaces is provided with an essentially fixed separating means (6) against which the two return springs are resting,that the housing comprises a common discharge channel (11) which communicates with the two valve spaces, andthat the device comprises a double one-way valve function (9, 10) in the area of the discharge channel in order to prevent unintentional flow actuation resulting from overflow between the valve spaces.