Products Contain Ventilation Sleeve

Ventilation Sleeve

The Rheo Ventilation Sleeve provides localized dust and vapor control at the point of product transfer.

The Rheo ventilation sleeve provides localized vapor and dust control at the point of product transfer keeping employees safe and reducing product loss.

Ventilation Sleeve

Watch this video of the Rheo Ventilation Sleeve in action!

Dust Extraction

The Rheo Ventilation Sleeve provides localized dust extraction to contain airborne dust and vapor. The full perimeter slot design provides 360 degrees of extraction to ensure that proper air velocity is maintained in the dust zone despite obstructions, such as an operator’s hands or a drum liner.

This shows dust extraction and vapor control with the Rheo Ventilation Sleeve

Diagram displaying how the Ventilation Sleeve provides more efficient extraction compared to other options

Efficient Extraction Flow

The Rheo Ventilation Sleeve provides full perimeter extraction to deliver 150 fpm capture velocities within the dust zone of your process. Compare this difference to the conventional LEV approach that has no way of compensating for the flow obstructions such as an operator’s hand.


The Rheo Ventilation Sleeve has a removable cover that provides wipe-down access to all surfaces of the sleeve.

Engineer Drawing of the Rheo ventilation sleeve shows details


The Ventilation Sleeve shape and size can be customized to fit most applications. Various mounting methods are used to position the sleeve in the application opening.

Utility Requirements

The Ventilation Sleeve can be connected to any in-house dust extraction system or mobile dust collector/filter system. Utility requirements vary according to the diameter of the Ventilation Sleeve (airflow recommendations shown below).

Ventilation Sleeve diameter can be customized to allow integration with your in-house dust extraction system.

Ventilation Sleeve Inner Diameter
[Inches / Millieters]
Duct Size
[Inches / Millieters]
Extraction Air Flow Rate*
[SCFM / Liters Per Second]
Approximate Pressure Loss
[Inches WC / Millibar]
10 / 250 4 / 100 300 / 140 1.5 / 3.75
12 / 300 4 / 100 350 / 165 2 / 5
14 / 350 4 / 100 450 / 215 3.5 / 8.75
16 / 400 4 / 100 500 / 240 5 / 12.5
16 / 400 6 / 150 650 / 315 2 / 5
18 / 450 6 / 150 650 / 315 2 / 5
20 / 500 6 / 150 700 / 340 2.5 / 6.25
24 / 600 6 / 150 800 / 390 3 / 7.5

*Flow recommendations are calculated to provide:
• Capture Velocity [at center]: 150 ft/min (approximately)
• Duct Velocity: 3500+ ft/min

diagram displays the capture velocity in different zones in the containment region for the Ventilation Sleeve


The design of the Rheo Ventilation Sleeve targets specific capture velocities within the containment region. These velocities, listed in feet per minute (fpm), are illustrated in the image. This image is for reference only, the velocities will vary based on the inner diameter and the duct size.

Surface Finish

Rheo offers several different surface finish options to fit your application needs.

Visit our GMP Compliance page to learn more.

Rheo offers multiple surface finished for GMP compliance. See the options side by side.



By using the drum liner and the Ventilation Sleeve, very good containment levels can be achieved while simplifying the operator experience and reducing the amount of cleaning required. A video is available that illustrates this operation.