ROOTS-FLO® Positive Displacement Blowers
Frames 404, 406, 409 and 412
Unit is available in 4 different models. Units are designed to be drop-in replacements for the DuroFlow® 45 series blowers and Big Jack Inc. A4 series. Piston ring seals reduce leakage through the shaft openings in the headplates. Lip type seals prevent lubrication from entering the air chamber.
Flow Range: 149 CFM to 3244 CFM
Pressure Range: 1 psig to 15 psig
Vacuum Range: 1” to 16”Hgg (Dry)
The basic model features a ribbed cast iron casing and ridged headplates, carburized and ground alloy steel spur timing gears secured to steel shafts with a taper mounting and locknut, and cast iron involute impellers. Oversized anti-friction bearings are used, with a cylindrical roller bearing at thedrive shaft to withstand V-belt pull. Detachable rugged steel mounting feet permit easy in-field adaptability to either veritcal or horizontal installation requirements.
Machined and dynamically balanced ductile iron impellers with integral shafts per ASTM 536 Class 60-45-12 and 80-60-3 for additional strength on maximum load operations. Impellers are computer designed for maximum efficiency.
At maximum load and speed our extra capacity cylindrical roller drive shaft bearing has 2.5 to 3 times longer bearing life than the competitive units ball bearing.
Gears are spur type SAE 8620 steel carburized and ground to 58-62RC for tough continuous operation, without inducing harmful thrust loads. Gears are reliably mounted with a taper fit to the shaft.
Main air seals are piston ring for minimal leakage. Bearing and drive shaft oil seals are Viton lip. All are proven Dresser ROOTS design and rated for severe duty.
Warranty: Twelve months of operation or eighteen months from date of original purchase.