Abstract: The invention relates to a device (100) for actuating a process valve that has a first cylinder and a second cylinder, comprising at least one first control valve arrangement (102) that has at least a connector for a line to the first cylinder of the double-seat valve, an intake-air connector and an exhaust-air connector, and comprising a second control valve arrangement (103) that has at least a connector for a line to the second cylinder of the double-seat valve, a connector for an intake-air line and a connector for an exhaust-air line, wherein separate exhaust-air lines (104, 105) are provided for the first and the second control valve arrangement (102, 103).

Abstract: The invention relates to a device (100) for actuating a process valve (1), for use in foodstuffs technology, that has a valve member (4), an actuating element (14) being moved upon the shifting of the valve (1), in such a way that the position of the actuating element (14) is a measure of the position of the valve member (4), the device (100) for actuating a process valve (1) having a sensor that is arranged and/or realized in such a way that its output signal is a measure of the position of the actuating element (14), the sensor being a magnetostrictive sensor (151).

Abstract: The invention relates to a device (100) for actuating a process valve that has a first cylinder and a second cylinder, comprising at least one first control valve arrangement (102) that has at least a connector for a line to the first cylinder of the double-seat valve, an intake-air connector and an exhaust-air connector, and comprising a second control valve arrangement (103) that has at least a connector for a line to the second cylinder of the double-seat valve, a connector for an intake-air line and a connector for an exhaust-air line, wherein separate exhaust-air lines (104, 105) are provided for the first and the second control valve arrangement (102, 103)