ROOTS™ 409 TRI RAM Blower

Model: 409 TRI-RAM

The ROOTS™ 409 TRI-RAM positive displacement blower combines modern noise reduction technology with time-tested engineering principles to deliver exceptional volumetric efficiency. It delivers dependable airflow performance with reduced vibration and noticeably quieter operation for industrial pressure and vacuum systems. Engineered with tri-lobed-geometry impellers and proven WHISPAIR™ technology, this heavy-duty rotary positive displacement blower moves up to 847 CFM while maintaining smooth airflow consistency.

Key Specifications

Max Flow

847 CFM

Max Pressure

15 PSI

Maximum Speed

4750 RPM

Manufacturer

Roots

IO&M Manuals

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Technical Details

Model: ROOTS 409 Tri-RAM

Flow Range: Up to 847 CFM

Max Pressure: 15 psi

Max Vacuum: 16″ Hg

Maximum RPM: 4750

Minimum RPM: 850

Max ΔT: 240˚F

Inlet Connection: 125 mm

Discharge Connection: 125 mm

Shaft Diameter: 35 mm

Drive End Lubrication: Oil

Gear End Lubrication: Oil

Unit Weight: 335 lbs

Roots 409 Tri-RAM Design and Features

Tri-lobed impellers help reduce vibration and airflow pulsation

WHISPAIR™ discharge design supports quieter blower operation

Heavy-duty ductile iron impellers improve airflow efficiency

Precision alloy steel timing gears support reliable, long-term performance

Cylindrical roller bearings help extend bearing service life

Piston ring seals reduce internal air leakage

Splash oil lubrication protects internal components during operation

Sight glasses on both ends simplify routine maintenance checks

Detachable steel mounting feet support horizontal or vertical installation

Drive shaft extension allows flexible system configuration

Warranty Information

Models 409 through 621 include a warranty period of 24 months from original startup or 30 months from shipment date, whichever occurs first.

Models 722 through 832 include a warranty period of 12 months from original startup or 18 months from shipment date, whichever occurs first.