VIAIR Ultra Duty OBA - Manual (Page 3)

USER MANUAL
ULTRA DUTY ONBOARD AIR SYSTEM
2.5 GALLON 200 PSI AIR TANK & PLUMBING
(USE CONTENTS OF PARTS PACKAGE #1)
Your 2.5 Gallon air tank comes with six 1/4” NPT port openings to allow installation in many configurations on
your vehicle. To insure safe and trouble-free use of your air tank, we strongly recommend that you install the
supplied drain cock and a safety pressure relief valve. (See Figure 1)
Tank Fittings:
Install the supplied compression fittings and/or quick connect fitting for the air tank in areas where they are
most appropriate for your installation using thread sealant or Teflon tape. Make sure that the safety valve is
installed in the top most position on the tank, and that the drain cock is installed in the lowest position on the
tank if the tank is to be installed in any other position than upright on the tank’s mounting legs. Be sure that all
fittings are accessible later in the installation process since you will have to plumb air lines to each fitting as
needed to utilize the air tank.
Mounting the Tank:
We have included 6 pieces of rubber bushings in your tank mounting hardware. You have the option of using
two layers of rubber bushings on one of your tank lags to slightly tilt tank toward the drain cock to improve
drainage. Use the provided longer bolts, and corresponding washers, and nuts to mount the tank to a suitable
chassis or body point on your vehicle.
IMPORTANT:
- Tank is rated for 200 PSI maximum working pressure.
- Tank is NOT to be used as a breathing device.
- Bleed pressure from tank before servicing or adding attachments.
- Use only attachments or tools rated for 200 PSI working pressure or less.
CAUTION! DO NOT PRESSURIZE YOUR TANK UNTIL YOU HAVE INSTALLED
ALL NECESSARY PORT FITTINGS AND ACCESSORIES.
- Apply sealant to threads of fittings prior to assembly and tighten each part with a wrench.
- Do not over tighten if your port fittings are made from brass, since brass threads can be stripped.
- Always release air from tank before servicing.
P/N 20001
OBA PLUMBING DIAGRAM
Typical System Configuration, May Vary Depending on Installation
15 Edelman
Irvine, CA 92618
949-585-0011
www.viaircorp.com
2.5
Gallon
Tank
Drain
Cock
Reducer
Pressure Switch
with Relay
Safety
Valve
Compression
Fitting
Compression
Fitting
Quick Connect
Couplers
Coil Hose
Dash Panel
Gauge
Leader Hose
From Compressor
Rev.1
Plumbing Diagram:
(Figure 1)