The Aqua Medic M-Ventil Solenoid Valve has a high quality body manufactured from nickel plated brass with a maximum operating pressure of 6 bar. Pressure fittings for 6mm flexible hose can be connected to all the C02 units we carry. The solenoid coil consumes only 2.5 watts of electrical energy to prevent overheating. In conjunction with a pH controller, automatic control of the CO2 supply and pH can be achieved. If used with a timer, the valve will provide a night shut off system. 110 volt AC.