Trailer Sealcoat Applicator

HDP 750T Sealcoating Machine Delivers Exceptional Efficiency, Less Maintenance

In News by Neal Manufacturing

Neal Manufacturing gives commercial contractors increased efficiency with its HDP 750T trailer-mounted machine. The unit features a heavy-duty aggregate pump system that produces as much as 100 gpm for up to 50 percent faster coverage than diaphragm pumps. It also is equipped with a convenient water tank hand-wand holder, which eliminates the risk of damage from leaking sealer to cars, the machine or other surfaces.

Neal Manufacturing’s HDP 750T has a capacity of up to 750 gallons. Its high capacity minimizes the time associated with refilling the tank on large projects and additional trips to the sealer manufacturer or distributor. In addition to the hydraulically driven, electrically controlled HDP system, the unit comes with 75 feet of reinforced hose, a 6-foot hand wand and a six-nozzle spray bar. Users can add an additional hand wand or 87-inch spray bar for faster coverage. The spray bar can apply material in 16-foot passes for even greater efficiency on larger projects. Operators also can choose the optional 50-gpm electrically operated hydraulic piston pump, which delivers enough volume to operate two hand wands.

The HDP transfers as much as 100 gallons of material into the tank per minute, which is the fastest transfer rate on the market. It also can process high sand loads, which is a requirement on some state, federal and Federal Aviation Administration (FAA) projects. V-twin, 18-horsepower.

Neal Manufacturing designs its HDP pumps for low maintenance and longevity, with 75 percent fewer parts than traditional air pumps. They feature leather cups that tightly seal the plates to prevent material from leaking. Unlike diaphragm pumps that require daily flushing to prevent their rubber seals from degrading, the leather cups in the hydraulic piston pumps will not degrade. Users only need to flush them once per year, which can save up to 30 minutes per day. The seals last up to 200,000 gallons, depending on the sand load. Kohler Command PRO® gasoline engines power the HDP system and deliver high torque for strong material mixing in the tank. The pump also provides on-demand action; since it pumps only when pressure drops during spraying, it consumes less horsepower, reduces fuel consumption and increases engine life.

The pumps include 2.5-gallon material filters that capture more debris so the machines can spray longer between filter cleanings. They also feature Neal’s Generation III pump heads. The Generation III controller serves as the brain for the reciprocating cylinder – the unit that drives the material pump – and features a specialized, time-tested and reliable design for uninterrupted pumping power. In addition to more volume, Neal’s pump offers more power, increased suction and the ability to spray larger volumes of materials with heavy sand loads, either through multiple hand wands or a spray bar.

The HDP 750T has an in-line surge tank that reduces material surging to ensure continuous flow of material for uniform coverage. The machine’s hydraulic agitation system features a unique three-blade design; the blades are offset to ensure two blades are in the material at all times, which produces a more thoroughly mixed product. The shaft of the agitator also is made with solid steel for exceptional strength, durability and longer wear life.

The control panel on the sealcoating machine allows users to change the direction and speed of the pump and agitator. It also allows operators to accurately control the water cleanup system.

Large indicator lights alert users to the status of the machine from long distances. Users can access the tank through the 21-inch square manway that includes an interior safety lid and sandbag splitter.

Neal Manufacturing uses high-gauge structural tube steel to build its trailers. The tubular construction increases strength, which in turn minimizes the risk of cracks and structural failures that are more common in frames with C-channel construction. In addition, they can be towed from job to job with a standard 2-5/16-inch ball hitch or an optional pintle hitch. They also have breakaway safety switches that automatically apply the brakes and prevent the trailers from rolling out of control should the trailer get separated from the tow vehicle. The trailers also are equipped with the appropriate department of transportation lights for safe travel.

To ensure its customers know how to properly operate and maintain the machines, Neal Manufacturing also offers free training seminars at its Anniston, Alabama, location.

All machines are tested under load before being shipped to its customers.