EXAIR’s Air Nozzle Blowoff Guide to see the details on our enormous selection .. EXAIR’s Super Air Knife is the latest generation of our engineered air knife. EXAIR’s Super Air Knife is a new generation of air knife that dramatically reduces compressed air usage and noise when compared to other blowoffs. The Super. EXAIR Super Air Knife, SCFM per Inch Maximum Flow Rate, 80 psig: Industrial Air Cylinders: : Industrial & Scientific.

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The Super Air Knife is the latest generation of air knife that dramatically reduces compressed air xir and noise when compared to aair blowoffs. The Super Air Knife offers a more efficient way to clean, dry or cool parts, webs or conveyors.

It delivers a uniform sheet of laminar airflow across the entire length with hard-hitting force. Noisy blowoffs become a whisper when replaced with the compact Super Air Knife.

Even at high pressures of 80 PSIG 5. Amplification ratios entrained air to compressed air of Compressed air flows through an inlet 1 into the plenum chamber of the Knkfe Air Knife. The flow is directed to a precise, slotted orifice. As the primary airflow exits the thin slotted nozzle 2it follows a flat surface that directs the airflow in a perfectly straight line.

This creates a uniform sheet of air across the entire length of the Super Air Knife. Velocity loss is minimized and force is maximized as the room air 3 is entrained into the primary airstream at a ratio of The result is a well defined sheet of laminar airflow with hard-hitting force and minimal wind shear. Super Air Knives in PVDF Polyvinylidene Fluoride offers superior strength and are resistant to UV-light, inorganic chemicals, solvents, ozone, weather, fungi, chlorinated hydrocarbons, highly corrosive acids, weak bases and salts.

The PVDF Super Air Knife is suitable for manufacturing processes that involve electroplating, solar cells, lithium ion batteries, transfer of acids and caustic chemicals, brine, solvent recovery, semiconductors, and medical devices. It can withstand temperatures up to o F o C. There are a variety of ways to blow the water from the bottles shown in the photo, but which method is best? The following comparison of drilled pipe, flat air nozzles, a blower and the Super Air Knife proves that EXAIR has the best choice for your blowoff, cooling or drying application.


Our goal for each of the blowoff choices was to use the least amount of air possible to get the job done lowest energy and noise level.

Compressed air pressure required for each was 60 PSIG 4. The table below summarizes the overall performance. Since your wxair part may have an odd configuration, holes or sharp edges, we took sound level measurements in free air no impinging surface.

Super Air Knife

This common blowoff is very inexpensive and easy to make. As shown in the test results below, the drilled pipe performed poorly. The initial cost of the drilled pipe is overshadowed by its high energy use. The holes are easily blocked and the noise level is excessive — both of which violate OSHA requirements. Velocity across the entire length was very inconsistent with spikes of air and numerous dead spots. As shown below, this inexpensive air nozzle was the worst performer.

It is available in plastic, aluminum and stainless steel from several manufacturers. The flat air nozzle provides some entrainment, but suffers from many of the same problems as the drilled pipe.

Operating cost and noise level are both high. Some manufacturers offer flat air nozzles where the holes can be blocked — an OSHA violation. Velocity was inconsistent with spikes of air. The blower proved to be an expensive, noisy option.

As noted below, the purchase price is high. Noise level was high at 90 dBA. There was no option for cycling it on and off to conserve energy like the other blowoffs.

Costly bearing and filter maintenance along with downtime akr also negative factors. The Super Air Knife did wxair exceptional job of removing the moisture on one pass due to the uniformity of exari laminar airflow. The sound level was extremely low. For this application, energy use was slightly higher than the blower but can be less than the blower if cycling on and off is possible.


Safe operation is not an issue since the Super Air Knife cannot be dead-ended. Maintenance costs are low since there are no moving parts to wear out. Exar target for each blow-off device was to consume the least amount of air possible to perform the task at the lowest energy and noise levels. The required air pressure for each device was 4. The table below summarizes the general performance.

Since the workpiece you are actually alr to blow off may have an irregular structure, holes or sharp edges, the noise level measurements were made in free air without hitting a surface. Special Lengths Available — Contact us. The Mounting System has a durable, stainless steel construction that is suitable for a variety of industrial applications. The kit includes two rigid plates along with the assembly screws. The Super Air Knife includes a 0,05mm installed Shim and is for most applications suitable.

Some applications need higher force and flow.

Super Air Knife™ and Accessories – Air Knives – Products

Force and flow can be increased by installing additonal shims that open the air gap. Shim-Sets could be buy as accessories: 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.