Abstract: For a coaxial magnetic valve with an inner valve disk which can move in the axial direction, and with an outer valve disk which surrounds the inner valve disk and which can move in the axial direction, wherein these two valve disks are arranged coaxially to each other and each rises from its corresponding valve seat against the action of a closing spring, and with a magnetic drive for activating both valve disks, the magnetic drive includes two independent magnetic loops which are arranged one above the other in the axial direction, each of which has a coil, and they interact with two armatures which are arranged one above the other in the axial direction and which connect to the inner valve disk or to the outer valve disk, wherein the armature of the outer valve disk is penetrated by a connecting rod connecting the inner valve disk to its armature. With this double magnetic valve, each valve disk can be controlled separately.

Abstract: A double safety magnetic valve with two valves being accommodated in a housing, both axially displaceable valve disks thereof are disposed coaxially to, one another and each lifts from its respective valve seat through an axial movement in opening direction against the spring pressure of a first and second closing spring respectively, wherein the second, in flow direction of the double safety magnetic valve inner valve disk comprises as adjustment element a magnetic armature and the first, i.e. outer valve disk is motion-coupled with the inner valve disk in opening direction.

Abstract: In a double seat valve (1) comprising a valve body (8) with an upper valve disk (6) and a lower valve disk (7), an upper valve seat (4) for the upper valve disk (6) and a lower valve seat (5) disposed underneath for the lower valve disk (7), and an adjustment element for the valve body (8) for opening this valve body (8) against the action of a closing spring (9), the valve body (8) is guided displaceably on the adjustment element and that on the adjustment element a limit stop (14) is provided which takes the valve body (8) along in opening direction (10), which limit stop (14) is spaced from its bearing, effective in taking along, on the valve body (8) when the valve body (8) has been closed. Upon opening the adjustment element first performs an idle stroke, before the valve body is taken along. Upon closing the adjustment element performs an additional overtravel corresponding to the idle stroke, when the valve body already rests with both its valve disks on the respective valve seats.