The Aqua Medic Solenoid Valve is a quality valve with pressure fittings for 6-mm flexible hose. The body of the valve is made from brass and is chrome plated. To prevent overheating, the valve uses 3.5-watt electrical power. The maximum useable gas pressure 6 bar. The valve can be connected to all CO2 units. Together with a timer, the valve can be used as a night shut off. In combination with a pH controller automatic control of the CO2 supply and the pH value.