Description

Roots Dresser 624J RAM WHISPAIR Rotary Positive Blower – High-Performance Air & Gas Handling

The Roots Dresser 624J RAM WHISPAIR Blower is a heavy-duty rotary positive displacement blower engineered for reliable, quiet, and efficient operation. Built with Roots’ patented WHISPAIR™ design, this model minimizes pulsation and noise while reducing power losses, making it ideal for demanding industrial environments.

Key Specifications

• Max Flow: ~3,244 CFM

• Max Pressure: 10 psi differential

• Max Vacuum: 16″ Hg

• Max Speed: 3,000 RPM

• Connections: 10″ flanged inlet / 8″ flanged discharge

• Shaft Diameter: 2″

• Weight: ~910 lb (shipping ~1,037 lb)

• Lubrication: Splash type (gear & drive ends)

• Oil Requirement: 145 oz (horizontal), 83 oz (vertical)

Features & Benefits

• WHISPAIR Noise Reduction: Wrap-around plenum and jet design for quieter performance.

• Rugged Construction: Ductile iron impellers, grey iron headplates, and one-piece casing.

• Precision Gearing: Carburized and ground steel spur gears ensure rotor synchronization.

• Reliable Sealing: Piston ring and hydrodynamic seals minimize leakage and protect bearings.

• Flexible Installation: Detachable steel mounting feet for horizontal or vertical orientation.

Applications

• Wastewater aeration systems

• Pneumatic conveying

• Combustion air supply

• Industrial vacuum assist

• Process gas boosting

Documentation (PDFs)

For detailed specs, performance curves, and installation instructions, see:

• Roots RAM WHISPAIR Brochure – Frames 404J–624J (PDF)

• Roots Blower Installation, Operation & Maintenance Manual (PDF)