Patent ID: 7198058

Claim:
Device for actuating double seat valves, comprising: two closing elements ( 3 , 4 ) which are seat discs and move independently to each other, which enclose between them a leakage chamber ( 5 ), which is connected via at least one path of travel with the surroundings of a double seat valve, with the independently actuated first closing element ( 3 ), that after a partial stroke comes to rest on the dependently actuated second closing element ( 4 ) and likewise transfers this with its further opening movement into a full open position (H), with valve stems ( 3 a , 203 , 103 ; 4 a , 204 ) which fit into one another in a telescoping manner and that extend outward on the side of the second closing element ( 4 ) out of a valve housing ( 1 ), through which the closing elements ( 3 , 4 ), additionally to the full open position (H) and independent of each other, are each able to be brought in a first and second partially open position (T 1 , T 2 ), whereby the full open position (H) is generated through a main adjustment device ( 100 ) and the first and second partially open positions (T 1 , T 2 ) through the respective closing elements ( 3 , 4 ) assigned individual adjustment devices ( 200 ; 200 . 1 , 200 . 2 ), the individual adjustment devices ( 200 ; 200 . 1 , 200 . 2 ) are additively inserted between the main adjustment device ( 100 ) and the valve housing ( 1 ) and one actuating piston ( 205 , 206 or 206 / 206 . 1 ) is respectively installed on a control rod ( 3 a , 203 ; 4 a , 204 ), which can be brought axially movable in one direction on the control rod and in the opposite direction for engagement in a clamping connection with this control rod, and whereby the second partially open position (T 2 ) of the second closing element ( 4 ) is limited by a permanent stop position of a third actuating piston ( 206 ; 206 / 206 . 1 ) which is provided in the housing ( 201 / 202 ) of the individual adjustment device ( 200 ), characterized in that a stop position of a second actuating piston ( 205 ) is relative to the housing ( 201 / 202 ) provided for the first partially open position (T 1 ) of the first closing element ( 3 ) and is adjustable from its exterior in the area between the main adjustment device ( 100 ) and the individual adjustment devices ( 200 ) through a stop nut ( 214 ).