Ista Acu dose CO2 Pressure Regulator

Features: ?Extremely precise needle valve assures accurate and reliable CO2 dosing. ?One stage pressure reduced to provides constant and reliable CO2 dosing. To assemble ?Turn the CO2 outlet controlling node to the closed position ?Connect and fasten the pressure regulator to the disposable CO2 cartridge until the pressure gauge displays a pressure reading. ?Slowly release the CO2 outlet controlling node of the pressure regulator to the desired CO2 injection rate. Caution ?Remove the pressure regulator ONLY when the CO2 cartridge is complete empty (pressure gauge indicates 0). ?Hand tighten and loosen only. D O NOT use any kind of tool to fasten the pressure regulator to the CO2 cartridge. ?Ensure that the pressure regulator O-ring is in correct position before cartridge change.