When You Can Use An Air Amplifier, or A Line Vac, or…Either?

One of the key applications that we use to promote our Line Vac Air Operated Conveyors is scrap trim removal. In cases where a continuous feed of material needs to be carried away, a properly sized Line Vac is just the thing. They’ll generate a moderate amount of vacuum and conveyance air flow, which can move the material over significant distance, if needed.

I had the pleasure of talking to a long-time customer recently, who has been using EXAIR products to successfully remove the backing strip from a continuous feed of label roll. Instead of the Line Vacs, though, they’ve been using Model 6044 4” Aluminum Adjustable Air Amplifiers. The low density, lightweight film backing doesn’t require much air flow at all to move it, and they only need to carry it away a few feet.

EXAIR's Adjustable Air Amplifier
EXAIR’s Adjustable Air Amplifier: Not always interchangeable with a Line Vac, but…

Recently, though, they introduced a new product with a slightly wider label. The film backing for this has been catching in the 3.02” ID throat of the 4” Air Amplifier, making a BIG mess as it backs up into the machine. They called me for a solution, and I’m glad they did, because (spoiler alert) I had one.

Our Air Amplifiers and Line Vacs both generate a modest vacuum and moderate vacuum flow, but, because they use two different principles of operation to do so, the Air Amplifier makes for a very high vacuum flow, at a lower vacuum level, where the Line Vacs generate a higher vacuum, but a lower vacuum flow.

In some cases, the Air Amplifier is the obvious choice…if you’re moving something that’s already airborne, you don’t need a whole lot of vacuum; you just need the flow to keep it moving. In others, the Line Vac is better suited…like when you’re transferring the bulk contents of a shipping container, where you’ll need a higher vacuum level to pick it up.

In this particular case, either will work…it’s a lightweight material that’s already in motion (no significant amount of vacuum required there), so the throat diameter was the deciding factor: our Model 130400 4” Light Duty Line Vac has a 3.75” throat; which is more than sufficient to prevent jamming. The air consumption on the 130400 (58.5 SCFM @80 psig) is even in the same neighborhood as the 6044 (50 SCFM @80 psig,) so, operationally, it’s almost an even swap as well.

EXAIR's Light Duty Line Vac
EXAIR’s Light Duty Line Vac: Not always interchangeable with an Air Amplifier, but…

If you’d like to find out how EXAIR products can be a viable solution to your problem, give us a call. We’re eager to help.

Russ Bowman
Application Engineer
(513)671-3322 local
(800)923-9247 toll free
(513)671-3363 fax
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