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.

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.