ROOTS 406 RAM DVJ WHISPAIR Dry Vacuum Blower

ROOTS™ 406 RAM DVJ WHISPAIR Dry Vacuum Blower

Model: 406 RAM DVJ WHISPAIR

The ROOTS™ 406 RAM DVJ WHISPAIR dry vacuum blower is designed for industrial vacuum systems that require dependable performance at deeper vacuum levels. Delivering airflow up to 668 CFM, this heavy-duty exhauster uses an exclusive discharge jet plenum design that introduces cool atmospheric air into the cylinder to help control operating temperatures during continuous high-vacuum operation. Rugged ductile-iron impellers, precision alloy-steel timing gears, and splash-lubricated bearings support reliable long-term performance in demanding industrial environments.

Key Specifications

Max Flow

668 CFM

Max Vacuum

27″ Hg

Maximum Speed

4000 RPM

Manufacturer

Roots

IO&M Manuals

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Literature

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Technical Details

The ROOTS™ RAM DVJ WHISPAIR series is engineered for continuous dry vacuum performance with advanced internal cooling capabilities. Its durable grey iron casing, integral shaft ductile iron impellers, and precision timing gears help maintain dependable airflow stability while minimizing heat related stress during high vacuum operation.

Model: ROOTS™ 406 RAM DVJ WHISPAIR

Flow Range: Up to 668 CFM

Max Δ Vacuum: 27″ Hg

Maximum RPM: 4000

Minimum RPM: 850

Max ΔT: 275°F

Inlet Connection: 4″ FPT

Discharge Connection: 5″ FPT

Jet Port Connection: 4″ FPT

Shaft Diameter: 1.5″

Drive End Lubrication: Oil

Gear End Lubrication: Oil

Required Oil Horizontal Unit: 55 ounces

Required Oil Vertical Unit: 27 ounces

Unit Weight: 365 pounds (165.9 kg)

ROOTS™ 406 RAM-DVJ Design and Features

Single-stage vacuum operation up to 27″ Hg vacuum

Exclusive discharge jet plenum design helps control operating temperatures

No valves, vanes, or Teflon rings that require frequent replacement

Alloy steel timing gears support dependable synchronization

Cylindrical roller bearings designed for continuous operation

Piston ring air seals help minimize internal leakage

Lip-type oil seals help protect the air chamber from contamination

Optional mechanical seals available for gas applications

Splash oil lubrication supports long-term internal protection

Available in horizontal and vertical configurations

Warranty Information

12 months from original unit startup or 18 months from original shipment, whichever occurs first.