Installation Manual

Use a 1/4” NPT compression fitting on the “IN” side of the regulator receiving air from
the air tank. On the “OUT” side of the regulator, you may install a 1/4” NPT quick
connect coupler, or use another 1/4” NPT compression fitting to route the air line to
the source of the item that pressure is being regulated to. If you are plumbing to air
locking differentials, we have included two 1/8” BSP Female to 1/4” NPT Male Adapters
for this use. You may require a T-fitting (not included), depending on your application.
3. Adjusting pressure 0-150 PSI
The pressure regulator knob locks when pushed towards the unit. To adjust pressure,
simple pull knob away from the regulator body and adjust as needed. Always lock the
adjustment knob in place before using pressure-adjusted air supply to keep pressure
regulated at a fixed pressure.
TIRE INFLATION GUN
OPERATING INSTRUCTIONS
Your Onboard Air System also comes with a Tire Inflation gun for airing up tires, and
adding compressed air to any inflatable item with a valve stem. The Tire Inflation Gun