Super Air Knife
The Super Air Knife is available from stock in standard lengths of 3", 6", 9", 12", 18", 24", 30", 36", 42", 48", 54", 60", 72", 84", 96" and 108" (76, 152, 229, 305, 457, 610, 762, 914, 1067, 1219, 1372, 1524, 1829, 2134, 2438 and 2743mm) in aluminum, stainless steel, and Type 316 stainless steel. PVDF is in stock in standard lengths of 3", 6", 9", 12", 18", 24", 30", 36", 42", 48", and 54" (76, 152, 229, 305, 457, 610, 762, 914, 1067, 1219, and 1372mm).
EXAIR now offers long Super Air Knives in 60" (1524mm), 72" (1829mm),
84" (2134mm), 96" (2438mm) and 108" (2743mm) lengths in one
piece construction. One piece construction ensures seamless airflow
and eliminates coupling multiple short length air knives together. One piece
construction decreases overall height by 1/2" making it better for tight spaces.
Special lengths and unlimited system lengths are available. Any number of Super Air Knives may be installed across a given area.
Magnetic bases with Flexible Stay Set Hoses are also available for smaller Super Air Knives. Please contact our factory.
Compressed Air Inlets:
A Super Air Knife has compressed air inlets on each end and the bottom. Knives 24"-47" should use the 2 inlets at opposite ends of the knife. Knives 48"-59" use 2 inlets at opposite ends plus 1 near the middle on the bottom of the knife. Knives 60"-83" use 2 inlets at opposite ends plus 2 inlets equally spaced on the bottom of the knife. Knives 84" and longer use 2 inlets at opposite ends plus 3 inlets equally spaced on the bottom of the knife.
The use of clean air is essential. Kits include an automatic drain filter with a 5 micron filter element that is sized properly for flow.
Materials of Construction:
The Super Air Knife is available from stock in aluminum, Type 303 stainless steel, Type 316 stainless steel, or PVDF construction. Other lengths are available on special order.
The Super Air Knife can be mounted using the Universal Air Knife Mounting System. It can also be supported by the compressed air pipe. Tapped holes (1/4-20) on the bottom are also provided.
A pressure regulator on the compressed air supply provides infinite control of flow, force and air consumption. Kits include a pressure regulator that is sized properly for flow.
The compressed air exhausts through a gap which is set with a shim positioned between the cap and the body of the Super Air Knife. Force and flow through the Super Air Knife may be easily increased by adding shims to open the gap. Shim sets for aluminum Super Air Knives include a .001" (0.03mm) (amber color), .003" (0.08mm) (green color) and .004" (0.10mm) (tan color) thick plastic shim. A red color .002" (0.05mm) thick shim comes installed in the Super Air Knife. Shim sets for stainless steel Super Air Knives include (3) .002" (0.05mm) thick stainless steel shims. PVDF Super Air Knife shim sets include (3) .002" (0.05mm) PTFE shims. Kits include a shim set (three additional shims).
Force and flow can be increased by installing additional shims that open the air gap.
|Super Air Knife Performance*|
|Air Consumption per Inch (25mm)
|Velocity @ 6" (152mm) from target
|Sound Level @ 3' (914mm)
|Force per inch (25mm) @
6" (152mm) from target
*with .002" (0.05mm) thick shim installed
12" (305mm) Super Air Knife tested
Super Air Knife Airflow Pattern
Changing Performance By Adding Shims
|The Super Air Knife is shipped with a .002" (0.05mm) (red color) thick shim installed, which works best for most applications. There are, however, some situations that require more force and flow. Thicker shims will increase the gap opening which offers higher velocity and harder hitting force. Air consumption and noise will be slightly higher. Shim sets are included with all kits or can be ordered separately.
Kits include a Super Air Knife, shim set, filter separator and pressure regulator.
Coupling Bracket Kits
Some applications require a Super Air Knife that is longer than our 108" (2743mm) length. Coupling Bracket Kits that join two Super Air Knives together are available. The kit includes two rigid plates along with the assembly screws. The bottom plate is supplied with a hole to access the bottom inlet.
The Model 110900 Coupling Bracket Kit is available for aluminum Super Air Knives which includes the two aluminum plates and stainless steel screws. The Model 110900SS for the stainless steel Super Air Knife includes two stainless steel plates and stainless steel screws.
Universal Air Knife Mounting System
The Model 9060 Universal Air Knife Mounting System is used to provide secure, precise positioning for any of the EXAIR Air Knives. It can be mounted on either the top or bottom of most Air Knives (Super Air Knife, Standard Air Knife and Full-Flow Air Knife).
The Universal Air Knife Mounting System has a durable, stainless steel construction that is suitable for a variety of industrial applications. Click here for more information about the Universal Air Knife Mounting System.
Air Knife Plumbing Kit
Super Air Knives that are 24" or longer must be supplied with compressed air at multiple inlets on the knife. The Universal Air Knife Plumbing Kits prevent you from searching for the right fittings or using undersized air supply lines. They provide properly sized compressed air hose or pipe, and fittings to interconnect the bottom or end compressed air inlets for best performance. A pressure gauge to monitor pressure at the Super Air Knife, which is an indication of proper air supply, is included.
Plumbing kits for aluminum Super Air Knives include nitrile/PVC hose and brass fittings. Plumbing kits for stainless steel Super Air Knives include cut to length type 316 stainless steel pipe and fittings and will also work on PVDF Super Air Knives.
Model 9076, 9077, 9078 and 9079 Plumbing Kits work with Aluminum Super Air Knives and provide the hose and fittings to couple the inlets for best performance.
Model 9240 (for 24" knives), 9241 (for 30" knives), 9242 (for 36" knives), 9243 (for 42" knives), 9244 (for 48" knives), 9255 (for 54" knives), 9246 (for 60" knives), 9247 (for 72" knives), 9248 (for 84" knives), 9249 (for 96" knives) and 9250 (for 108" knives) Plumbing Kits work with Stainless Steel Super Air Knives, as well as PVDF Super Air Knives, and provide the pipe and fittings to couple the inlets for best performance.
Electronic Flow Control
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. Click here for more information.