AIR-POWERED PRESSURE WASHER
Rating: 4GPM @ 3000PSI
Spark-Free Power for the Toughest Tank Wash Environments
When your tank cleaning operation demands serious pressure without the risk of electrical ignition, the MX-302AO Air-Powered Pressure Washer delivers. Engineered for tank wash operators, chemical depots, and transportation facilities working in and around flammable residues, confined spaces, and Class I hazardous locations, this air-driven workhorse is the intelligent alternative to traditional electric or gas-powered units.
At Tank Wash Solutions, we specify the MX-302AO because it solves the single biggest safety problem facing modern tank cleaning facilities: how to generate 4 GPM at 3,000 PSI of cleaning power without introducing an ignition source. With a 9 HP rotary air motor in place of a combustion engine or electric motor, the MX-302AO eliminates spark hazards entirely — making it the right choice for interior tank wash bays, MEA skid applications, and any environment where solvent vapors, isocyanates, latex residues, or LEL-rated atmospheres may be present.
Why Tank Wash Operators Choose Air-Operated Over Electric
Electric pressure washers introduce arc-flash and ignition risk in any tank environment that has handled flammable cargo. Gas units produce exhaust that’s unacceptable indoors. The MX-302AO sidesteps both problems — running cleanly off your existing plant air system at 150–200 CFM @ 80 PSI. The result is a single piece of equipment your team can move from bay to bay, deploy inside a tank for stinger washing, or station at a presolve station without a second thought about ignition sources.
For facilities running John-Henry VAPO-LOCK, LEL Reducer, isocyanate detergents like TC-555, or solvent-based pre-solves like LIQUI-FIRE RX, pairing your chemistry with a spark-free delivery system isn’t a luxury — it’s how modern, OSHA-conscious tank wash operations protect their crews and their P&L.
Specified By Henry Zeller
The MX-302AO is one component in a fully integrated tank cleaning ecosystem that Henry Zeller has refined over 30+ years in the industry. Whether you’re outfitting a complete wash bay, upgrading a high-pressure shell & tube skid, or simply replacing aging electric units with safer air-driven alternatives, Tank Wash Solutions consults from concept to installation — matching the right pressure washer to the right chemistry, the right wastewater treatment, and the right workflow for your facility.
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Built to Industrial Tank Cleaning Standards
Every component on the MX-302AO is selected to survive the chemical exposure, vibration, and continuous-duty cycles typical of professional tank wash operations:
- CAT Pumps Ceramic Plunger Triplex Pump — the industry gold-standard for high-cycle, high-pressure cleaning, with ceramic plungers that resist abrasion from particulate-laden wash water
- Stainless steel wheel kit with pneumatic tires — corrosion-resistant for facilities using caustic detergents, acid cleaners, and aggressive pre-solves
- Bell housing and flex coupling drive — protects the pump and motor from misalignment and shock loading
- Filter, regulator, and lubricator (FRL) with gauge — properly conditioned air protects the rotary motor and extends service life
- 3/8″ × 50′ hose with quick connects, trigger gun, lance, and nozzles — fully outfitted out of the box
Specs at a Glance
- Output: 4 GPM @ 3,000 PSIMotor
- Motor: 9 HP Rotary Air
- Pump: CAT Pumps Ceramic Plunger Triplex
- Frame: Stainless Steel with Pneumatic Tires
- Drive: Bell Housing & Flex Coupling
- Hose Package; 3/8″ × 50′ w/ QCs, Trigger Gun, Lance, Nozzles
- Air Conditioning; FRL with Gauge
- Air Requirements: 150–200 CFM @ 80 PSI (4-lug crowfoot inlet)
- Weight: 220 lbs
- Dimensions: 32″W × 48″L × 34″T (includes lift)
Request a Quote on the MX-302AO
Contact Tank Wash Solutions today to discuss whether the MX-302AO is the right fit for your tank cleaning operation. We’ll review your air supply, your chemical program, and your facility layout to confirm specifications and recommend any complementary equipment or chemistry that will maximize your return on investment.
Or fill out our Quick Call Request form below.