Order of execution
1. Before connecting the valve to the container, turn the knob fully counterclockwise.
2. Turn the knob counterclockwise until it reaches its highest position.
3. Connect the central hose with the valve fitting. Turn the knob fully clockwise.
4. Rotate the knob clockwise to punch a hole in the sealed cap at the top of the bottle.
5. Turn the knob fully counterclockwise to fill the center hose with air. Do not open the high and low pressure valves.
6. Loosen the center hose nuts connected to the pressure gauge fitting.
7. Release the air for a few seconds and tighten the nut