The special CO2 control valve is made from high-strength aluminum alloy and features an internally ultra-thin filter for high reliability. It is equipped with only one button for easy operation and offers automatic pressure compensation for quick and precise adjustment. The device operates with safe low voltage (9 V). Compatible with all standard reusable CO2 bottles with W21.8 x 1/14 threading. An adapter art. 2999 is required for operation (not included in the package).