Full-Flow Air Knife™ – This low cost choice provides a curtain of air for blowoff, cleaning, drying and cooling.
What is the Full-Flow Air Knife?
EXAIR’s Full-Flow Air Knife is an effective way to clean, dry or cool parts, webs or conveyors. It utilizes the coanda effect to pull in large volumes of surrounding air, producing a high flow, high velocity curtain of air. The “Full-Flow” provides airflow across the entire length. A 12″ (305mm) Full-Flow Air Knife measures 12″ (305mm). It has the compressed air inlet(s) on the rear. Inlets are available on each end at a small additional charge but are not recommended when uniform airflow is required.
Specials are available. Please contact us!
| 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 | SLPM | M/S | dBA | Grams |
| 20 | 1,4 | 31 | 15,2 | 64 | 11 |
| 40 | 2,8 | 51 | 25,4 | 72 | 28 |
| 60 | 4,1 | 68 | 38,1 | 76 | 45 |
| 80 | 5,5 | 88 | 50,8 | 80 | 65 |
| 100 | 6,9 | 108 | 61,0 | 83 | 82 |
Note: Performance on lengths over 36″ will vary.
Aluminium Full-Flow Air Knife
Special Lengths Available – Contact us.
Steel Type 303SS Full-Flow Air Knife
Special Lengths Available – Contact us.
| Aluminum Full-Flow Air Knife Only | ||
|---|---|---|
| Full-Flow Air Knife Length | Aluminium | Stainless Steel |
| 3″ (76 mm) | 2603 | 2603SS |
| 6″ (152 mm) | 2606 | 2606SS |
| 9″ (229 mm) | 2609 | 2609SS |
| 12″ (305 mm) | 2612 | 2612SS |
| 18″ (457 mm) | 2618 | 2618SS |
| 24″ (610 mm) | 2624 | 2624SS |
| 30″ (762 mm) | 2630 | 2630SS |
| 36″ (914 mm) | 2636 | 2636SS |
Shim Sets
A Full-Flow Air Knife has a .002″ (0.05mm) gap setting. This gap is set with a shim positioned between the cap and the body of the Full-Flow Air Knife. Force and flow through the Full-Flow Air Knife may be easily increased by adding shims to open the gap. Kits include a shim set. Shim sets for aluminum Full-Flow Air Knives include a .001″ (0.03mm), .003″ (0.08mm) and .004″ (0.10mm) thick plastic shim. Shim sets for stainless steel Full-Flow Air Knives include (1) .002″ (0.05mm) thick stainless steel shim.
| Full-Flow Air Knife Shim Sets | ||
|---|---|---|
| Full-Flow Air Knife Shim Sets Length | Aluminium | Stainless Steel |
| 3″ (76 mm) | 2903 | 2903SS |
| 6″ (152 mm) | 2906 | 2906SS |
| 9″ (229 mm) | 2909 | 2909SS |
| 12″ (305 mm) | 2912 | 2912SS |
| 18″ (457 mm) | 2918 | 2918SS |
| 24″ (610 mm) | 2924 | 2924SS |
| 30″ (762 mm) | 2930 | 2930SS |
| 36″ (914 mm) | 2936 | 2936SS |
| More Accessories | |
|---|---|
| Model | Description |
| 9060 | Universal Air Knife Mounting System |
| 9001 | Automatic Drain Filter Separator, 3/8 NPT, 65 SCFM (1841 SLPM) |
| 9032 | Automatic Drain Filter Separator, 1/2 NPT, 90 SCFM (2548 SLPM) |
| 9002 | Automatic Drain Filter Separator, 3/4 NPT, 220 SCFM (6230 SLPM) |
| 9005 | Oil Removal Filter, 3/8 NPT, 15-37 SCFM (425-1048 SLPM) |
| 9006 | Oil Removal Filter, 3/4 NPT, 50-150 SCFM (1415-4248 SLPM) |
| 9008 | Pressure Regulator with Gauge, 1/4 NPT, 50 SCFM (1416 SLPM) |
| 9033 | Pressure Regulator with Gauge, 1/2 NPT, 100 SCFM (2832 SLPM) |
| 9009 | Pressure Regulator with Gauge, 3/4 NPT, 220 SCFM (6230 SLPM) |
| 9020 | Solenoid Valve Only, 120V, 50/60Hz, 1/4 NPT, 40 SCFM (1133 SLPM) |
| 9021 | Solenoid Valve Only, 200-240V, 50/60Hz, 1/4 NPT, 40 SCFM (1133 SLPM) |
| 9034 | Medium Solenoid Valve, 120V, 1/2 NPT, 100 SCFM (2832 SLPM) |
| 9035 | Medium Solenoid Valve, 240V, 50/60Hz, 1/2 NPT, 100 SCFM (2832 SLPM) |
| 9036 | Large Solenoid Valve, 120V, 3/4 NPT, 200 SCFM (5664 SLPM) |
| 9037 | Large Solenoid Valve, 240V, 50/60Hz, 3/4 NPT, 200 SCFM (5664 SLPM) |
| 9065 | Large Solenoid Valve, 24VDC, 1 NPT, 350 SCFM (9911 SLPM) |
» Universal Air Knife Mounting System (PDF)
» Standard and Full-Flow Air Knife (PDF)
» Air Knife Shim-Sets (PDF)
» Universal Air Knife Plumbing Kit – Model 9076 (PDF)
» Universal Air Knife Plumbing Kit – Model 9077 (PDF)
» Universal Air Knife Plumbing Kit – Model 9078 (PDF)
» Universal Air Knife Plumbing Kit – Model 9079 (PDF)
» Stainless Steel Plumbing Kit 24″-42″ (PDF)
» Stainless Steel Plumbing Kit 48″-108″ (PDF)
EXAIR’s EFC is an electronic flow control that dramatically reduces compressed air costs by turning off the compressed air when no part is present. This minimizes compressed air use for blow off, drying, cooling, conveying and static elimination operations. The EFC combines a photoelectric sensor with a timing control that limits compressed air use by turning it off when no part is present. Visit the EFC Page for more information.FAQ’s
- Air curtain made of aluminium with a plastic shim up to 82 °C
- Air curtain made of aluminium with a stainless steel shim up to 205 °C (custom built)
- Air curtain made of stainless steel with a stainless steel shim up to 427 °C*
- Air curtain made of PVDF with a PVDF shim up to 135 °C
*Temperatures above 427 °C can cause intracrystalline corrosion which obstructs the air gap.
Our Air Knives are designed to deliver a uniform/laminar airflow from the outset. If this is not the case, there may be some soiling on the inside of the Air Knife. Please open and clean the Air Knife following the operating instructions.
For lengths of more than 18″, the air knife must be fed via multiple compressed air inputs (up to 6 inputs depending on the length) in order to ensure a uniform airflow. In the case of the PVDF Air Knife, the material can also cause changes in the homogeneity of the airflow.
A guide for restoring a uniform airflow is available here.
Did you know that a single 3-mm hole consumes as much compressed air as a Super Air Knife model with a length of 152 mm (6″)? Additionally, an air knife offers a low noise level (below 70 dBA given an unobstructed blow-off path) and does not have a dead end (safety at work).
The amortisation period if you replace holes with optimised blow-off nozzles is less than 6 months.
To be able to answer this question, we need to investigate the specific use case. For example, the Super Air Knife could be operated with water to cool a workpiece or flush away loose residues. Experience shows that the water jet initially has a uniform outflow and then eddies further away from the air curtain. This means that use with water is possible.
If you need 360 ° wetting with water, we recommend our Super Air Wipe annular nozzle. The input pressure is up to 2 bar.
Of course, we also have legacy atomiser nozzles in various designs in our portfolio. They are suitable for cooling, washing, wetting, moistening, lubricating, etc.