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RAS-DVJ (Whispair) Gas Blower

Heavy-duty, versatile, air injected vacuum blower

ROOTS® DVJ WHISPAIR™ dry exhausters have an exclusive discharge jet plenum design which allows cool, atmospheric air to flow into the cylinder. This unique design permits continuous option blank-off conditions with a single blower.

  • Vacuum to 27” Hg
  • Flows to 16,780 SCFM

Key Features

  • Available in v-belt or direct drive configurations
  • Rigid cast iron cylinder and headplates
  • Anti-friction cylindrical roller bearings
  • Splash lubricated spur timing gears
  • Inlet and discharge connections in standard pipe sizes
  • Involute profile ductile iron impellers

Benefits

  • High Vacuum Capability: This exhauster is designed to overcome the limitations of standard dry exhausters, achieving vacuum levels beyond 16” Hg with integral cooling to prevent extreme discharge temperatures and potential equipment damage.
  • Durable Construction: The DVJ blower features grey iron headplates, gear cover, drive end cover, and one-piece casing, along with carburized alloy steel spur timing gears taper mounted on the shafts, secured with a locknut. Cylindrical roller bearings ensure robust performance.
  • Efficient Sealing Mechanisms: Piston rings and lip-type oil seals minimize air leakage and prevent lubricant from entering the air chamber, with a hydrodynamic seal on the drive shaft preventing oil leaks.
  • Effective Lubrication: The vacuum exhausters incorporate splash oil lubrication at both ends for smooth and reliable performance.
  • Warranty Coverage: A warranty period of 12 months from date of original unit start-up or 18 months from date of original shipment is provided.

Key Features

Key Features

  • Available in v-belt or direct drive configurations
  • Rigid cast iron cylinder and headplates
  • Anti-friction cylindrical roller bearings
  • Splash lubricated spur timing gears
  • Inlet and discharge connections in standard pipe sizes
  • Involute profile ductile iron impellers

Benefits

Benefits

  • High Vacuum Capability: This exhauster is designed to overcome the limitations of standard dry exhausters, achieving vacuum levels beyond 16” Hg with integral cooling to prevent extreme discharge temperatures and potential equipment damage.
  • Durable Construction: The DVJ blower features grey iron headplates, gear cover, drive end cover, and one-piece casing, along with carburized alloy steel spur timing gears taper mounted on the shafts, secured with a locknut. Cylindrical roller bearings ensure robust performance.
  • Efficient Sealing Mechanisms: Piston rings and lip-type oil seals minimize air leakage and prevent lubricant from entering the air chamber, with a hydrodynamic seal on the drive shaft preventing oil leaks.
  • Effective Lubrication: The vacuum exhausters incorporate splash oil lubrication at both ends for smooth and reliable performance.
  • Warranty Coverage: A warranty period of 12 months from date of original unit start-up or 18 months from date of original shipment is provided.

Performance and Data Sheets