Positive Displacement Blowers
Gardner Denver Robuschi Tri-Flow 825
The Gardner Denver Robuschi Tri-Flow 825 blower for combination sewer jetter trucks achieves 19 inches Hg vacuum and delivers 4,311 cfm at 18 inches Hg while weighing less than 1,500 pounds, making it suitable for jetting and excavation work. When paired with the company’s product-tuned silencer, this unit is quiet and consumes 70% less space than a traditional silencer. For greater work site efficiency, it provides 6% higher flow and 7.2% more fuel efficiency at 18 inches Hg. 866-428-4890; ww.gardnerdenver.com/robuschi.
Howden 827 DVJ
The 827 DVJ dry-vacuum blower from Howden is a heavy-duty unit with integral ductile iron impellers. The casing head plates, gear cover and drive-end are gray iron. Carburized and ground spur timing gears are taper-mounted on the shaft and secured with a locknut, cylindrical roller bearings, splash lubrication on both ends, and easy-to-read sight glasses for maintenance. The blower is capable of handling high inlet temperatures for rough applications. Its efficient discharge jet plenum design allows cool atmospheric air to flow into the cylinder, so the blower continues to run under blank-off conditions. It comes in a compact, lightweight package and is capable of delivering more than 5,700 cfm in an 8-inch gear diameter frame, as well as 28 inches Hg. 800-557-6687; www.howdenroots.com.
National Vacuum Equipment
Challenger 1600
The Challenger 1600 high-vacuum blower from National Vacuum Equipment is a 1,600 cfm tri-lobe blower designed for continuous duty at maximum vacuum. It is available in ready-to-install hydraulic or belt-drive packages using corrosion-resistant stainless steel internal components. Available packages include silencers, check valves, moisture trap, cyclone, four-way vacuum/pressure changeover valve and a powder-coated skid. 800-253-5500; www.natvac.com.
Vacuum Pumps
Elmira Machine Industries / Wallenstein Vacuum 753 Series
The 753 Series vacuum pump from Elmira Machine Industries / Wallenstein Vacuum incorporates extra-wide vanes that allow up to an inch of wear, designed for longer service life and lower maintenance costs. It provides 422 cfm airflow at 1,200 rpm and is precision-machined to provide vacuum levels up to 28 inches Hg. Options include air, liquid or dual cooling systems where air injection is combined with liquid cooling. A pump-flushing port is included on the top valve for convenient routine maintenance. The quick-access housing end plate allows for easy internal inspection with no bearings to pull. Oil lubrication is via a mechanical piston pump driven by shaft rotation or available with a sight-feed valve oil regulator system using vacuum/pressure to draw oil with no moving parts. 800-801-6663; www.wallenstein.com.
Fruitland RCF870
The RCF870 vacuum pump from Fruitland is available in clockwise and counterclockwise rotation with top- and side-mount, four-way valve locations. The pump is available with hydraulic, angle (gearbox) and belt-drive options. It can be mounted on all Eliminator-style packages. It is a true 4-inch pump with 4-inch pipe connections producing 512 cfm and weighing 575 pounds. It is fan-forced air-cooled with an available air injection cooling system for continuous duty at higher vacuum. It includes an integral oil reservoir with low-consumption oil pump, an integral final filter and vane-wear test ports. 800-663-9003; www.fruitlandmanufacturing.com.
Moro USA PM80W
The Moro USA PM80W water-cooled vacuum pump is designed and built for low maintenance, long life and trouble-free service in tough industrial applications, according to the maker. It is a 424 cfm pump with 28 inches Hg maximum vacuum and 29 psi maximum pressure capability. It comes with Kevlar vanes, visual inspection ports in the casing, and Viton oil seals. Its low rotating speed is designed to extend pump life. With sealed or oiled bearings, there are no grease points. The oiling system is direct-feed and sealed to reduce downtime for routine service and maintenance. 866-383-6304; www.morousa.com.
Presvac Systems PV750
The Presvac Systems PV750 rotary vane pump is designed for continuous full-vacuum operation in extreme conditions. It offers 400 cfm at free air, 350 cfm at 15 inches Hg, a maximum vacuum of 27 inches Hg and maximum pressure of 35 psi. Dual fans and twin ballast ports efficiently cool the pump. The solid housing with deep cooling ribs allows for greater heat transfer from the vacuum chamber. Aluminum fans and shrouding work like a heat exchanger to aid in heat reduction. Multiple manifold and drive options are available for truck, trailer or stationary applications. 800-387-7763; www.presvac.com.
Westmoor Conde HD
Conde HD vacuum/pressure pumps from Westmoor are built in a variety of sizes from 35 to 230 cfm. They incorporate a slide valve/changeover valve, which is compact, low profile and works easily, according to the maker. Automatic oilers never need adjustment. They can be driven by a variety of power sources, including a gas or diesel engine package, PTO, right-angle drive or a hydraulic pump. They are double shafted and can be set up for clockwise or counterclockwise rotation. 800-367-0972; www.westmoorltd.com.
