The invention relates to a safety and control device for pressurized containers for application systems for liquid media, comprising a safety valve, a control unit for the operating pressure, a pressure indicator, and a pressure relief, and means for connecting the device to the pressure container. The device has a housing (1) having a compressed air supply (2) and an air outlet (3), wherein a multifunction slider (4) that is axially displaceable, is arranged inside the housing (1) and is enclosed by same. The multifunction slider (4) has a channel (5) connected to a blind bore (6) that is leading to the pressurized container, and depending on the position of the multifunction slider (4), is connected only to the compressed air supply (2) in the rest position, is connected to the compressed air supply (2) and the air outlet (3) in the operating position, and is connected only to the air outlet (3) in the venting position. At the end of the multifunction slider (4) that is located opposite the blind bore (6), said multifunction slider is connected to a pin (7), which protrudes from the housing (1) through an opening, and that at the end thereof has means (8) for pressure relief by manual actuation. In the housing (1), in the region of the pin (7), a spiral spring (9) surrounding the pin (7) is arranged, which supports the multifunction slider (4) with respect to the bottom (10)of the housing (1). There are locking means (11), which allow a locking of the pin (7) in a position protruding from the housing (1).