Standard Air Knife™ – Hard hitting curtain of air for web, sheet and part blowoff.
What is the Standard Air Knife?
A quiet, energy efficient way to clean, dry or cool parts, webs or conveyors. The Standard Air Knife utilizes the coanda effect (wall attachment of a high velocity fluid) to create air motion in its surroundings. Using a small amount of compressed air as a power source, the Standard Air Knife pulls in large volumes of surrounding air to produce a high flow, high velocity curtain of air for blowoff.
Specials are available. Please contact us.
Why the Standard Air Knife?
Amplification ratios (entrained air to compressed air) of 30:1 are achieved with the Standard Air Knife, compared to 3:1 for drilled or slotted pipe. Air savings of 40% to 90% are possible when replacing these “homemade” blowoff devices. Pay-back is normally measured in weeks, not months or years.
The Standard Air Knife dramatically reduces “wind shear” by gradually introducing the entrained air to the ejected compressed air. Noise level is typically cut in half. The result is a high velocity, high volume sheet of air with reduced noise level and air consumption.
Drilled pipe or open jets, by contrast, provide minimal air amplification. They also produce unacceptably high noise levels as the compressed air shears into the still air.
3 Model 2012 12″ (305mm) Standard Air Knives
perform the drying cycle in this parts washer.
How the Standard Air Knife works
Compressed air flows through the inlet (1) into a plenum chamber. It is then throttled through a thin nozzle (2) extending the length of the Standard Air Knife. This primary airstream adheres to the coanda profile (3), which turns it 90° and directs the flow down the face of the unit. The primary stream immediately begins to entrain surrounding air (4), for an amplification ratio of 30;1 at 6″ (152mm) away.
 A Model 2012 12″ (305mm) Standard Air Knife |
Air Flow Pattern
Performance
Standard Air Knife Performance with .002″ (0.05mm) shim installed.
| Pressure Supply | Air Consumption per inch (25mm) |
Velocity @ 6″ (152mm) from target |
Sound level @ 3′ (914mm) | Force per Inch (25mm) @ 6″ (152mm) from target |
||||
|---|---|---|---|---|---|---|---|---|
| PSIG | BAR | SCFM | SLPM | FPM | M/S | dBA | Ozs | Grams |
| 20 | 1.4 | 1.3 | 37 | 4,000 | 20.3 | 65 | 0.45 | 13 |
| 40 | 2.8 | 2.0 | 57 | 5,800 | 29.5 | 74 | 1.1 | 31 |
| 60 | 4.1 | 2.7 | 76 | 8,500 | 43.2 | 80 | 2.0 | 57 |
| 80 | 5.5 | 3.4 | 96 | 11,000 | 55.9 | 83 | 2.7 | 77 |
| 100 | 6.9 | 4.1 | 116 | 13,000 | 66.0 | 86 | 3.3 | 94 |
Note: Performance on lengths over 36″ will vary.
Aluminium Standard Air Knife
Special Lengths Available – Contact us.
Stainless Steel Standard Air Knife
Special Lengths Available – Contact us.
| Standard Air Knife | ||
|---|---|---|
| Standard Air Knife Length | Aluminum Model | Stainless Steel Model |
| 3″ (76 mm) | 2003 | 2003SS |
| 6″ (152 mm) | 2006 | 2006SS |
| 9″ (229 mm) | 2009 | 2009SS |
| 12″ (305mm) | 2012 | 2012SS |
| 18″ (457 mm) | 2018 | 2018SS |
| 24″ (610 mm) | 2024 | 2024SS |
| 30″ (762 mm) | 2030 | 2030SS |
| 36″ (914 mm) | 2036 | 2036SS |
| 42″ (1067 mm) | 2042 | 2042SS |
| 48″ (1219 mm) | 2048 | 2048SS |
| Standard Air Knife Shim Sets | ||
|---|---|---|
| Model | Aluminum Model | Stainless Steel Model |
| 3″ (76 mm) | 2303 | 2303SS |
| 6″ (152 mm) | 2306 | 2306SS |
| 9″ (229 mm) | 2309 | 2309SS |
| 12″ (305 mm) | 2312 | 2312SS |
| 18″ (457 mm) | 2318 | 2318SS |
| 24″ (610 mm) | 2324 | 2324SS |
| 30″ (762 mm) | 2330 | 2330SS |
| 36″ (914 mm) | 2336 | 2336SS |
| 42″ (1067 mm) | 2342 | 2342SS |
| 48″ (1219 mm) | 2348 | 2348SS |
Shim Sets
A Standard Air Knife has a .002″ (0.05mm) gap setting. This gap is set with a shim positioned between the cap and body of the Standard Air Knife. Force and flow through the Standard Air Knife may be easily increased by adding shims to open the gap.
Standard Air Knife Kits include a shim set (three additional shims). Shim sets for aluminum Standard Air Knives include a .001″ (0.03mm) (Color: orange), .003″ (0.08mm) (Color: green) and .004″ (0.10mm) (Color: ocker) thick plastic shim. Shim sets for stainless steel Standard Air Knives include (3) .002″ (0.05mm) thick stainless steel shims.
| Accessories | |
|---|---|
| Model | Description |
| 9076 | Air Knife Plumbing Kit for Standard Air Knives size 24″-42″ |
| 9077 | Air Knife Plumbing Kit for Standard Air Knives size 28″-54″ |
| 9060 | Universal Air Knife Mounting System |
| 900517 | Universal Air Knife Mounting System Stainless Steel 303/304 |
| 9055 | EFC (40 SCFM), 1/4″ NPT |
| 9056 | EFC (100 SCFM), 1/2″ NPT |
| 9057 | EFC (200 SCFM), 3/4″ NPT |
| 9064 | EFC (350 SCFM), 1″ NPT |
