Universal RAI® Positive Displacement Blowers - Dresser ROOTS

Whispair Max®


Universal RAI blowers are heavy duty blowers designed with detachable rugged steel mounting feet that permit easy in-field adaptability to either vertical or horizontal installation requirements. Because of the detachable mounting feet, these units can be easily adapted to any of four drive shaft positions - right hand, left hand, bottom or top. The compact, sturdy design is engineered for continuous service when operated in accordance with speed and pressure ratings. The basic model consists of a cast iron casing and cast iron involute impellers. Carburized and ground alloy steel spur timing gears are secured to the steel shafts with a taper mounting and locknut. Oversized antifriction bearings are used, with a cylindrical roller bearing at the drive shaft to withstand V-belt pull. The Universal RAI features thrust control, with splash oil lube on the gear end and grease lube on the drive end. After standard tests, the unit is sprayed with a protective paint and boxed or placed on skids. Available accessories include driver, relief valve, inlet and discharge silencers, inlet filter, check valve, extended base, v-belt or flexible coupling and drive guards. You can mount the Universal RAI in multiple positions to accommodate your specific needs. With your choice of 17 frame sizes, there's a URAI that fits right into your OEM or replacement application.

  • Flow Rates: 10 - 2370 ICFM (17 - 4027 m179;/hr)
  • Pressures: No more than 15 PSI (No more than 1034 mbar)
  • Vacuum: No more than 16 INHgV (No more than 539 mbar)
  • Horsepower: 0.1 - 70 bhp (0.07 - 52 kw)


Special Internet Pricing! Please Call for Details 630-372-9222