VIAIR 91025 User Manual

PART NO. 91025
It is essential that you and any other operator of this product read and understand
contents of this manual before installing and using this product.
Your air tank comes with six NPT port openings to allow installation in many positions
on your vehicle. To insure safe and trouble-free use of your air tank, we strongly
recommend that you install a drain cock and a safety pressure relief valve on your air
tank. We recommend use of our Tank Port Fittings Kit (Part No. 90005), which comes
with a drain cock, a 175psi safety valve, and three plugs.
IMPORTANT:
a. Tank is rated for 150 PSI maximum working pressure. Do not overfill. Overfilling
may result in death or serious injury.
b. Tank is not to be used as a breathing device.
c. Always wear ANSI approved safety glasses when operating air tank.
d. Bleed pressure from tank after each use, and before servicing or adding
attachments.
e. Use only attachments or tools rated for 150 PSI working pressure or less.
CAUTION! DO NOT PRESSURIZE YOUR TANK UNTIL YOU HAVE INTALLED ALL
NECESSARY PORT FITTINGS AND ACCESSORIES.
a. Apply sealant to threads of fittings prior to assembly and tighten each part with a
wrench.
b. Do not over tighten if your port fittings are made from brass, since brass threads
can be stripped. The fittings need to be only air tight.
c. Always release air from tank before servicing or repairs.
WARNING: DRAIN TANK AFTER EACH USE. FAILURE TO DRAIN TANK AND REMOVE
CONDENSATION WILL CAUSE TANK TO RUST PREMATURELY.
a. To remove any accumulated condensation inside the tank, bleed pressure from
tank until pressure is approximately 5psi to 20 psi.
b. Drain water from tank by opening the drain cock drain valve.
c. If drain cock valve is plugged, release all air pressure from tank, remove drain valve
and clean, then reinstall.
d. After water has been drained, close the drain cock.
IMPORTANT: Please observe air tank’s Date of Manufacture (stamped on tank leg).
Replace air tank 2 to 5 years from date air tank was first used, or use the date of
manufacture as reference. Your adherence to air tank draining guidelines will determine
the replacement date of your air tank. RUSTED TANKS CAN FAIL CAUSING EXPLOSIONS
OR FATAL INJURIES. Discard tank immediately if tank is rusted.
NOTE: When using a safety pressure relief valve, point the safety pressure relief valve
away from your body when releasing air. Use the pull ring on the safety relief valve; open
the relief valve to vent any pressure inside the tank before attempting to service tank.
USER MANUAL

VIAIR 91025 Specifications

General

Model	91025
Category	Tank Equipment
Max Working Pressure	200 PSI
Tank Size	2.5 Gallon
Number of Ports	2
Port Size	1/4" NPT
Material	Steel
Drain Port Size	1/4" NPT
Voltage	12V
Duty Cycle	100%

Summary

Important Safety and Usage Guidelines

Maximum Pressure and Overfilling

Tank rated for 150 PSI max working pressure. Do not overfill to avoid death or serious injury.

Prohibition as Breathing Device

Tank is not to be used as a breathing device.

Safety Glasses Requirement

Always wear ANSI approved safety glasses when operating the air tank.

Post-Use Pressure Release

Bleed pressure from tank after each use and before servicing or adding attachments.

Attachment Pressure Rating

Use only attachments or tools rated for 150 PSI working pressure or less.

Installation Precautions

Fitting Sealant and Tightening

Apply sealant to fitting threads prior to assembly and tighten with a wrench.

Brass Fitting Care

Do not overtighten brass fittings to prevent thread stripping; ensure they are airtight.

Service and Repair Safety

Always release air from the tank before servicing or repairs.

Tank Draining and Maintenance

Condensation Drainage Procedure

Drain condensation by bleeding pressure to 5-20 psi and opening the drain cock valve.

Drain Valve Clearing

If drain cock is plugged, release all pressure, remove, clean, and reinstall it.

Tank Replacement Schedule

Replace tank 2-5 years from first use or date of manufacture due to rust and failure risk.

Safety Valve Usage

Point safety relief valve away from body when releasing air; use pull ring to vent pressure.

Recommended Tank Installation

2.5 Gallon Tank Owners

Use rubber bushings to tilt tank for improved drain hole drainage.

Troubleshooting Chart

Tank Loses Air Pressure

Possible cause: Air leaks from fittings. Correction: Locate leak with soap/water and tighten.

Tank Leaks

Possible cause: Pinhole from internal rusting. Correction: Replace tank immediately.

Cannot Get Air From Tank

Possible cause: Low tank pressure. Correction: Increase tank pressure.

Warranty Information

Product Warranty Coverage

Warrants product free from defects for one year from purchase date.

Replacement Procedure

Return complete unit to retailer with proof of purchase for replacement or repair.