The V1 shut-off valve is closed when the handle is perpendicular to the direction of gas flow.
- Close the shut-off valve, V1, and vent valves, V2 and V3, and the shut off valve, V4, on the high pressure charging
hose. Rotate the valve handles clockwise to seat the needle.
- Unlock the adjustment knob of the shop air regulator, R3, by pulling the knob out. Turn the adjustment knob fully
counter clockwise to set the regulator at its lowest setting.
Figure 2-2. Connecting Nitrogen Tanks