The 4310 Pro Pak Plus tri-lobe PD blower from National Vacuum Equipment Inc. features increased power and productivity for faster tank loading, lower operating costs and quieter, maintenance-free operation, says Jason Reading, the company’s sales manager.

The frame-mounted, powder-coated blower can achieve maximum power of 931 cfm at 4,500 rpm. In addition, variable-speed capability allows operators to run it at lower rpm – say, 500 cfm for regular pumping – then rev it up to peak cfms for pulling longer distances or from deeper in the ground, Reading explains.

Reading says the blower allows a traditional vacuum truck to perform more heavy-duty work. “Everyone gets paid by the job, so if you can do more jobs per day, you’ll be more profitable,” he says.

“It’s also capable of continuous duty at 27 inches of vacuum, so you can run it all day without overheating, thanks to our ballast air manifold, which cools it as it runs via air injection,” he continues. “The Pro Pak Plus maintains constant vacuum, so you don’t have to wait to draw down vacuum before you can start pumping again. It provides instant vacuum.”

The unit is aimed mostly at new-truck buyers who specify particular pieces of equipment. But it also can be retrofitted for existing trucks, typically behind the cab or on the driver’s side of the truck, Reading says.

Unlike a vane pump, the blower doesn’t use oil for lubrication, which saves money through reduced maintenance and operating costs, according to Reading. The internal lobes come in very close contact, but don’t touch, so there’s no need for lubrication. This makes the unit environmentally friendly, too, eliminating the potential for oil leaks, spills or smoke.

Moreover, sound-dampening material makes the Pro Pak Plus a quiet pump alternative. That’s beneficial for contractors who clean, for example, restaurant or casino grease traps, or who sometimes work at night in residential neighborhoods.

The blower cabinet features a brushed stainless-steel finish. A stainless-steel filter screen prevents debris from penetrating the blower. In addition, a secondary aluminum moisture trap bolts to the cabinet instead of the tank, which provides easier access for inspecting and draining the trap and allows more room for graphics on the tank. 800/253-5500; www.natvac.com.