Pressure Washer GX390 Honda 4GPM 4000PSI Annovi Reverberi Industrial

Water Cannon 31H90 Industrial Pressure Washer – 4000 PSI, 4.0 GPM, Belt Drive with Honda GX390

Engineered for power, durability, and professional performance, the Water Cannon Model 31H90 is a top-tier commercial pressure washer designed for contractors, maintenance crews, and cleaning professionals who demand uncompromising quality.

At the heart of this powerhouse is the reliable GX390 Honda engine, renowned for its fuel efficiency, quiet operation, and exceptional long-term performance. Paired with a belt-driven Annovi Reverberi industrial-grade triplex pump, the 31H90 delivers an impressive 4000 PSI at 4.0 GPM, making it ideal for heavy-duty applications such as fleet washing, construction cleanup, equipment maintenance, and industrial surface preparation.

Built on a portable aircraft-grade aluminum frame, this unit is rugged, lightweight, and corrosion-resistant. The integrated pneumatic tires ensure easy maneuverability across rough terrain and job sites, while the commercial-grade 50-foot high-pressure hose provides extended reach without sacrificing performance.

Additional features include:

• 36-inch professional-grade spray lance with trigger control for precision cleaning
• Downstream chemical/soap injector for efficient detergent application
• Five quick-connect spray nozzles (0°, 15°, 25°, 40°, and soap) to tackle a range of cleaning tasks
• Quick-connect fittings for fast setup and hose swaps

Whether you're tackling grease-stained concrete, mud-caked machinery, or commercial buildings, the Water Cannon 31H90 provides reliable industrial cleaning power in a portable and serviceable package.

Key Specifications:

• Engine: Honda GX390
• Pump: Annovi Reverberi Industrial Triplex (Belt Drive)
• Pressure: 4000 PSI
• Flow Rate: 4.0 GPM
• Frame: Aircraft Aluminum Portable Chassis
• Tires: Pneumatic for Easy Transport
• Hose: 50 ft. Commercial Grade, High-Pressure
• Spray Wand: 36" with Trigger Gun
• Chemical Injection: Downstream Injector Included
• Spray Nozzles: 5 Quick-Connect Tips (0°, 15°, 25°, 40°, Soap)

 

 • ANNOVI REVERBERI INDUSTRIAL TRIPLEX PUMP  • 4GPM  • 4000PSI  • AIRCRAFT ALUMINUM PORTABLE FRAME WITH PNEUMATIC TIRES  • INCLUDES 50 FOOT HOSE COMMERCIAL GRADE HOSE  • TRIGGER CONTROL WITH 36 INCH SPRAY LANCE  • CHEMICAL/SOAP INJECTOR  • 5 COLOR SPRAY NOZZLES  • QUICK CONNECTS

Water Cannon Manufacturers Warranty 

 

GTIN:	685671359956
SKU:	31H90, 60827
PSI:	4000
GPM:	4
Variant MPN:	60827

All Pressure Washers ships via UPS or Motor Freight to the lower 48 states of the U.S. (excludes Hawaii and Alaska), with international shipping options available when you order by phone. Upon buying power washing equipment from All Pressure Washers, we will email you a receipt with tracking information so you can track your order.

We are currently offering FREE SHIPPING and handling on PREPAID orders over $99.00.* This free shipping rate applies to prepaid orders only, paid via credit card, fax checks, etc. For orders placed by phone or online that are under $99.00, a shipping charge of $15.30 will be applied.

Click HERE for information on international shipping and our shipping policies.