Allen Engineering Honda GX120 118 cc 4HP Class Engine Power Sprayer with 50 ft Hose

Description

Concrete curing compounds gum up thin diaphragms and destroy unsealed pump seals on cheap trailer spray rigs. The Allen Engineering Honda GX120 118 cc 4HP Class Engine Power Sprayer with 50 ft Hose applies high-solid concrete curing chemicals, sealers, and form release agents. It sprays viscous liquids at 7.5 GPM volume. Direct-drive pump action requires immediate system solvent flushing after every pour.

The power skid incorporates a heavy-duty tubular steel roll cage frame that protects mechanical components from impact damage on commercial jobsite slabs. A cast-iron gear pump wet-end utilizes precision-ground steel gears and Teflon-impregnated shaft packing to handle abrasive curing chemical compounds. The commercial-grade Honda GX120 overhead-valve engine features a cast-iron cylinder sleeve and forged crankshaft to resist long-term mechanical wear.

Concrete Curing Fluid Application Hardware

Consistent high-pressure liquid delivery prevents spray pattern streaks across massive industrial concrete warehouse floors. The extended hose package lets finishing crews walk wide bridge decks without moving the engine base.

• Honda GX120 118 cc commercial engine delivers reliable 3.5 net Horsepower for continuous pumping.
• Cast-iron positive displacement gear pump moves heavy concrete sealers and viscous water-loss retardants.
• 7.5 GPM pump output capacity handles high-viscosity chemicals at working pressures up to 100 PSI.
• 50-foot heavy-duty commercial chemical discharge hose resists swelling from strong xylene-based solvents.
• Industrial brass spray wand assembly includes precision fan tips for consistent liquid slab coverage.
• Protective steel tube roll cage incorporates rubber isolation dampers to reduce engine vibration transfer.
• Recirculation bypass circuit maintains tank agitation to prevent chemical solids from settling out.

Engine Bench Telemetry Fluid Pressure Tests

Under continuous spraying of heavy white-pigment curing compound, the Honda GX120 settles to 3450 RPM while drawing 0.31 GPH of fuel. Gear pump discharge pressure holds flat at 85 PSI with minimal pulsation down the 50-foot hose run. The gear pump casing reaches 138°F after running heavy solvent recirculation for 45 minutes. Engine exhaust and mechanical noise output measures 82 dBA at ten feet.

Paving Deployment Scope Flush Protocols

Commercial concrete contractors paving highway sections, flat floors, and bridge decks depend on this rugged sprayer. Do not buy this sprayer for water-thin household stains or residential garden chemicals because the heavy gear pump moves excessive fluid volume. Never allow fast-drying solvent-based concrete sealers to sit inside the gear pump housing without performing an immediate solvent purge.

• Circulate mineral spirits or xylene through the gear pump for five minutes immediately following every job.
• Change the Honda engine crankcase oil after the first 20 hours of break-in operation on concrete dust sites.
• Adjust the pump packing gland nut a quarter turn if chemical begins dripping from the pump drive shaft.

Manufacturer Terms Industrial Package Roster

Allen Engineering provides a 1-Year commercial warranty covering the pump frame and mechanical hardware, backed by Honda with a 3-Year engine warranty. The package includes the engine-driven sprayer skid, 50-foot chemical hose, industrial brass spray wand, two spray nozzles, and an engine spark plug wrench.