Aerisitor manual Star Plus 3/8" 1. Unscrew the valve cap from the Star Plus 3/8" valve. 2. Insert the handle into the valve and turn it clockwise to open the valve. 3. To close the valve, turn the handle counterclockwise until it stops. 4. Once the valve is in the desired position, replace the valve cap. 5. Test the valve by turning it on and off a few times to ensure that it is in proper working condition.