Overtravel-double seat magnetic valve

A double seat magnetic valve comprising:

• a valve housing;
• a valve body with an upper valve disk and a lower valve disk;
• a upper valve seat for engaging the upper valve disk;
• a lower valve seat disposed underneath the upper valve disk for engaging the lower valve disk;
• a closing spring disposed between the valve body and the valve housing for urging the upper valve disk against the upper valve seat and the lower valve disk against the lower valve seat;
• an adjustment element for moving the valve body in an opening direction against the action of the closing spring in order to separate the engagement between the upper valve and upper seat and the engagement between the lower valve disk and the lower seat, the valve body being guided displacement on the adjustment element.
• a magnetic drive for actuating the adjustment element;
• a limit stop, disposed on the adjustment element, is provided for taking the valve body along in the opening direction, the limit stop being spaced apart from the valve body when the valve body is in a closed position with the upper valve disk engaging the upper valve seat and the lower valve disk engaging the lower valve seat;
• and
• a readjusting spring supported between the valve body and the adjustment element, the adjustment element being displaceably guided within a bearing in the valve body and effective in taking along the valve body against the action of the readjusting spring.