721 DVJ Whispair Vacuum Blower
Model: 721 DVJ WHISPAIR™
Roots™ 721 DVJ WHISPAIR™ vacuum blower is designed for high-capacity vacuum performance, delivering airflow up to 3125 CFM and vacuum levels up to 27″ Hg. This unit incorporates oil lubrication on both drive and gear ends and is engineered for stable operation within defined RPM and temperature limits. The Roots™ Whispair™ blower 721 DVJ unit shares the same durable construction features as RAM DVJ blowers, but is not configured for gas applications.
Product Specifications
Frame Size
721 DVJ
Flow Range
Up to 3125 CFM
Max Δ Vacuum
27″ Hg
Maximum RPM
2600
Minimum RPM
545
Max ΔT
260˚F
IO&M Manuals
Product Specifications
Roots™ 721 DVJ Whispair Vacuum Blower
Frame Size: 721 DVJ
Flow Range: Up to 3125 CFM
Max Δ Vacuum: 27″ Hg
Maximum RPM: 2600
Minimum RPM: 545
Max ΔT: 260˚F
Inlet Connection: 12″ Flange
Discharge Connection: 12″ Flange
Jet Port Connection: 12″ Flange
Shaft Diameter: 2.375″
Drive End Lubrication: Oil
Gear End Lubrication: Oil
Required Oil (Horizontal Unit) - Gear End: 155 ounces
Required Oil (Horizontal Unit) - Drive End: 70 ounces
Required Oil (Vertical Unit) - Gear End: 80 ounces
Required Oil (Vertical Unit) - Drive End: 40 ounces
Unit Weight: 1750 lbs (795.5 kg)
Shipping: Skid
Design & Features
Built with the same durable design as RAM DVJ vacuum blowers
Designed for high-vacuum industrial applications
Oil lubrication system on both drive and gear ends
Engineered for controlled thermal performance and operational stability
Multiple shaft orientation configurations available
Not configured for gas applications