Snap-on Down Drafter
The "Down Drafter" was developed to answer the needs of specialized extrusion,
where blow back of liquids has to be minimized and avoided for improved drying
without disturbing the environment around it. It has our patented nozzle jets
mounted both in the front and rear of the body with a center drain in the bottom
that is threaded, allowing the customer to install a fitting to connect to piping
or a flexible hose to return liquid back to their process supply without using an
additional enclosure, if desired. It also allows the customer to gang multiple units
together, while minimizing liquid blowing back onto the product from the previous-in-line
air wiper. Lastly, it performs better at higher speeds than a standard
air wiper. Using the metering valve, you can tune and balance the
air flow between the jets for maximum drying effect on each product or profile.
The down drafter is available in sizes up to 1 1/4 inch (31.7mm).
Air Flow / Noise
Efficient, Quiet Operation
- Most manufacturing plants already use compressed air, making conversion to Air Wipes both quick and cost effective.
- Very often, a change to Air Wipes has resulted in reducing the number of compressors on line.
- Air Wipes require only a fraction of the horse power needed to generate the electrical requirements of a centrifugal blower.
- Air Wipes controlled air flow produces much lower noise levels than open lines or adjustable models.
| Air Flow | Down Drafter Flow per Jet | dB Level |
|---|---|---|
| 10 PSI (0.7 bar) | 0.238 SCFM (.0067m3/min.) | 74.5 |
| 20 PSI (1.4 bar) | 0.354 SCFM (.0100m3/min.) | 74.5 |
| 30 PSI (2.1 bar) | 0.460 SCFM (.0130m3/min.) | 74.5 |
| 40 PSI (2.8 bar) | 0.557 SCFM (.0158m3/min.) | 74.8 |
| 50 PSI (3.5 bar) | 0.653 SCFM (.0185m3/min.) | 75.0 |
| 60 PSI (4.2 bar) | 0.751 SCFM (.0213m3/min.) | 76.0 |
| 70 PSI (4.9 bar) | 0.843 SCFM (.0239m3/min.) | 77.5 |
| 80 PSI (5.6 bar) | 0.948 SCFM (.0268m3/min.) | 80.0 |
Down Drafter Models
| Part No. | Opening Size | Wire Size (Max.) |
Wire Size (Min.) |
Jet No. | Bracket Model |
|---|---|---|---|---|---|
| AMDD0062 | 0.062" (1.6mm) |
0.031" (0.8mm) |
N/A | 12 | AW463 |
| AMDD0125 | 0.125" (3.2mm) |
0.093" (2.4mm) |
0.031" (0.8mm) |
12 | AW463 |
| AMDD0187 | 0.187" (4.7mm) |
0.156" (4.0mm) |
0.093" (2.4mm) |
12 | AW463 |
| AMDD0250 | 0.25" (6.4mm) |
0.219" (5.6mm) |
0.156" (4.0mm) |
12 | AW463 |
| AMDD0312 | 0.312" (7.9mm) |
0.281" (7.1mm) |
0.219" (5.6mm) |
12 | AW463 |
| AMDD0375 | 0.375" (9.5mm) |
0.343" (8.7mm) |
0.281" (7.1mm) |
12 | AW463 |
| AMDD0500 | 0.5" (12.7mm) |
0.469" (11.9mm) |
0.406" (10.3mm) |
12 | AW463 |
| AMDD0625 | 0.625" (15.9mm) |
0.594" (15.1mm) |
0.469" (11.9mm) |
12 | AW463 |
| AMDD0750 | 0.75" (19.1mm) |
0.719" (18.3mm) |
0.594" (15.1mm) |
12 | AW463 |
| AMDD1000 | 1.0" (25.4mm) |
0.969" (24.6mm) |
0.719" (18.3mm) |
12 | AW463 |
| AMDD1250 | 1.25" (31.7mm) |
1.187" (30.2mm) |
0.969" (24.6mm) |
12 | AW463 |
| AMDD2000 | 2.0" (50.8mm) |
1.969" (50.0mm) |
1.469" (37.3mm) |
16 | AW484D |