This model is now obsolete, but Roots used to offer aluminum bronze impellers as an option for the 412 DVJ Dry Vacuum Exhauster models. These rotors caused the machine to be derated to a lower max speed and pressure rise than the standard ductile iron rotors, but the aluminum bronze material provided spark and corrosion resistance. Learn more about these Roots Blowers with Bronze Impellers here.

The Roots model number for this special 412-DVJ blower was 85850020 (the last two digits may also indicate the blower’s configuration: 858500TL, 858500TR, 858500BL, 858500BR, 858500LT, 858500LB, 858500RT, or 858500RB).
Inlet Connection: 6″ Flange
Discharge Connection: 6″ Flange
Jet Port Connection: 5″ Flange
Shaft Dia.: 1.5″
Drive End Lubrication: Oil
Gear End Lubrication: Oil
Required Oil for Horizontal Unit: 55 ounces
Required Oil for Vertical Unit: 27 ounces
Unit Weight: 575 pounds (261 kg)
412 ROOTS DVJ with Aluminum Bronze Impellers
| Shipping Weight: | 625 lbs |
|---|---|
| Shipping Dimensions: | 42 × 29 × 23 in |
| Max Flow | 1038 CFM |
| Max Vacuum | 27" Hg |
| Max Speed | 4000 RPM |
| Manufacturer | Roots |
Roots no longer offers the 412 DVJ blower with bronze impellers.
For service on an existing unit, please contact our service team.
For replacement, click here to view the standard 412 DVJ Blower. Or contact us to discuss other options for your application.
