Made of aluminum alloy. It is strong, durable and effective. (bottle not included) The cap and the pipe are well sealed, tight, not deformed and never loose. A professional manometer monitors the pressure. It is cheap and simple to continuously generate pure CO2 by chemical reaction. Equipped with a safety valve, the pressure is greater than 4 kg, and the pressure is automatically reduced. The pressure of the carbonated drink bottle is 8 kg, which is safe and guaranteed. A professional manometer monitors the pressure. It is cheap and simple to continuously generate pure CO2 by chemical reaction. Bubble counter with non-return valve: Indicates the flow of CO2 and prevents the return of water into the bottle. Equipped with a safety valve, the pressure is greater than 4 kg, and the pressure is automatically reduced. The pressure of the carbonated drink bottle is 8 kg, which is safe and guaranteed. The safety valve supports manual pressure relief. When the pressure is less than 4 kg, it
