A valve for use in conjunction with an application device comprises a valve housing (12) and a valve spindle (32) which bears a sealing element (40) at a first free end (36) outside the valve housing (12) and, within the valve housing (12), is mounted displaceably between a closed position and a release position. The valve spindle (32) comprises at least one first piston element (44) and at least one second piston element (54), wherein the first piston element (44) is guided in a first piston space (20) and the second piston element (54) is guided in a second piston space (22), said piston spaces being bounded by the valve housing (12). A pressure fluid can be supplied in each case to the first piston space (20) and to the second piston space (22) in such a manner that a force acting in the same direction is exerted on the first piston element (44) and on the second piston element (54).
