Pneumatic actuating drive

Pneumatic actuating drive (1, 62) for final control elements having a drive housing (6) and a drive component (15) movable therein, to which drive component (15) is releasably attached a drive element (24) that exits from the drive housing (6) and can be moved together with the drive component (15) and which divides the drive housing (6) into a pressure chamber (16) and a reset chamber (17) with a reset element (19, 20) that acts on the drive component (15), and with a position controller (41) whose output (48) merges into an internal air supply duct (49), whereby the drive housing (6) can be reversibly installed in such a manner that, in a first installation position the reset chamber (17), and in a second installation position, the pressure chamber (16) adjoins the position controller (41), and whereby furthermore the drive element (24) includes an air duct (30) that merges on a side of the drive component (15) facing away from the position controller (41) into the chamber located there, characterized in that the reset chamber (17) includes a first connection aperture (34) which for the first installation position is connected to the air supply duct (49) and for the second installation position is closed, that a transfer connection (35, 62) is a separate component set into the reset chamber (17), said transfer connection connecting in the first installation position the first connection aperture (34) to the air duct (30), and that the pressure chamber (16) has a second connection aperture (33) which for the second installation position can be connected to the air supply duct (49) and for the first installation position can be closed.