Description
Tackle grueling commercial fleet washdowns with direct-drive pump reliability and extreme water impact pressure. The Simpson Aluminum Water Blaster 4200 PSI 4.0 GPM gas cold water pressure washer strips baked grease, hydraulic film, and caked clay from fleet machinery. This heavy machine cleans commercial mower decks and tractor undercarriages. It cannot produce heated water streams.
A commercial Honda GX390 13HP engine couples to an industrial CAT triplex plunger pump through a direct-drive shaft connection. A heavy aircraft-grade aluminum frame eliminates rust from harsh wash bay chemicals, carrying a 50-foot steel-braided high-pressure hose, insulated spray lance, and five quick-connect spray tips. Thirteen-inch pneumatic tires roll across rough gravel equipment yards and broken jobsite surfaces with ease.
Direct Drive Aluminum Washer Specs
Commercial equipment fleet managers and highway maintenance shops require heavy-duty pressure washers to blast heavy mud from machinery rapidly. This machine delivers high-pressure cleaning power continuously.
- Honda GX390 commercial engine provides high horsepower for continuous pump output
- Industrial CAT triplex plunger pump generates 4200 PSI at 4.0 GPM for deep cleaning
- Aircraft-grade aluminum frame eliminates rust corrosion from wet wash bay chemicals
- Includes five quick-connect spray tips for targeted fan pattern adjustments
- Thirteen-inch pneumatic tires provide traction across muddy wash pads and gravel yards
- External unloader valve allows manual bypass pressure tuning to match cleaning surfaces
- Thermal relief valve purges hot water buildup during closed-trigger idle bypass cycles
Pump Bench Pressure Load Telemetry
Hydrostatic testing records continuous 4200 PSI discharge pressure at 4.0 GPM water flow at 3500 engine RPM. Direct-drive pump manifold oil temperature stabilizes at 145 degrees Fahrenheit across two hours of continuous washing. The Honda GX390 engine consumes 0.88 GPH at full operating load. Sound pressure tests measure 89 dBA at the operator position.
Pressure Washing Operational Boundary Filter
Check engine and pump oil levels, connect pressurized water supply, bleed air from the wand, start the engine, and squeeze the trigger. Maintain a fifteen-degree nozzle angle against metal surfaces. Do not direct high-pressure water jets at grease seals or radiator cooling fins.
- Pump crankcase oil requires replacement with synthetic pump oil every hundred hours
- Engine oil demands checking and topping off before starting every washing shift
- Water supply inlet screens require cleaning with fresh water to remove debris before each use
Commercial Washer Warranty Crate Manifest
Simpson protects this 60828 Water Blaster pressure washer with a 3-Year commercial engine warranty and 5-Year limited pump warranty. The shipment crate contains the aluminum pressure washer unit, 50-foot high-pressure hose, trigger gun, lance, five spray tips, and operator manuals.
