Product Overview: Back Blow Safety Air Guns

BackBlowNozzle

EXAIR’s highly engineered and efficient Back Blow Nozzle’s provide a powerful 360° airflow through an array of holes to remove coolant, chips or debris.  Back Blow Nozzle’s are the perfect solution for cleaning out the inside of any pipe, tube, hose or channels.

They are available in three different sizes:

M4 X .5 BB Nozzle

.25 NPT BB

1 NPT BB

The Back Blow Nozzle’s are also offered on the VariBlast, Soft GripHeavy Duty, and Super Blast Safety Air Guns.  They can be configured with different length extensions (up to 72″) to make nearly any cleaning job within reach!   We recommend the optional Chip Shield since the air stream is carrying the debris back towards the operator.

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Variblast Safety Air Gun 1604SS-6-CS, Includes 1004SS Back Blow Nozzle With 6″ Extension and Chip Shield. The 1604SS Is Offered In 6″, 12″, 24″ and 36″ Lengths.
1204SS-6-CS
Soft Grip Safety Air Gun 1204SS-6-CS, Includes 1004SS Back Blow Nozzle With 6″ Extension and Chip Shield.  The 1204SS Is Offered In 6″, 12″, 24″ and 36″ Lengths.
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Soft Grip Safety Air Gun 1206SS-6-CS, Includes 1006SS Back Blow Nozzle With 6″ Extension and Chip Shield.  The 1206SS Is Offered In 12″, 18″, 24″, 36″, 48″, 60″ & 72″ Lengths.
1306SS-6-CS
Heavy Duty Safety Air Gun 1306SS-6-CS, Includes 1006SS Back Blow Nozzle With 6″ Extension and Chip Shield.  The 1306SS Is Offered In 12″, 18″, 24″, 36″, 48″, 60″ & 72″ Lengths.
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Super Blast Safety Air Gun 1219SS, Includes 1008SS Back Blow Nozzle With 1′ Extension.  The 1219SS Is Offered In 1′, 3′ & 6′ Lengths.

Take it from me EXAIR’s Safety Air Guns fitted with a  Back Blow Nozzles are a must have for any operation that needs to remove debris from pipes, tubes or hose!

If you would like to discuss Safety Air Guns with Back Blow Nozzles or any of our quiet and efficient compressed air devices, I would enjoy hearing from you…give me a call.

Steve Harrison
Application Engineer
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Super Air Wipe Vs. Block Type Air Wipe

Air Wipes, which provide 360 degree blowoff, are typically used to remove heat, liquid, debris or static from wire, cable, pipe, tube, or extrusions.

We had a customer that was using a block type Air Wipe from a competitor to remove water from an extrusion.  These air wipes are built using a plastic material, typically with some additional ceramic insert to resist abrasion of the wire, the halves are hinged with air holes drilled into each half which carries air through the block and on to the wire. They were using these block air wipes on several lines. The interesting point of this blog is that it required 5 block type air wipes to equal the results of 1 EXAIR Super Air Wipe.

Since EXAIR’s Super Air Wipe equaled the performance of 5 of the competitors it consumed less air was less expensive and produced less noise.  Also in space sensitive applications the EXAIR Super Air Wipe is much thinner than the block type.  To highlight this the Super Air Wipe is 1.13″ thick on all 11 models that range from 3/8″ to 11″ throat diameter.   The performance of the block air wipe can only be changed by altering the inlet air pressure while the EXAIR Super Air Wipe can also be changed by adusting the inlet air pressure OR by adding an additional shim the force can be nearly doubled!

Many of these block type air wipes use a series of holes to direct the compressed air supply at an angle over the material that needs to be cleaned off.  EXAIR’s Super Air Wipe being an engineered compressed air product use’s fluid dynamic’s to create more force as demonstrated below. The air from EXAIR’s Super Air Wipes is a continuous 360 degrees, without the gaps a series of holes creates.

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How The Air Wipe Works

Compressed air flows through the inlet (1) of the Air Wipe into the annular chamber (2).  It is then throttled through a small ring nozzle (3) at high velocity.  This primary airstream adheres to the Coanda profile (4), which directs down the angled surface of the Air Wipe.  A low pressure is created at the center (5) inducing a high volume flow of surrounding air into the primary airstream.  As the airflow leaves the wipe, it creates a conical 360° ring of air that attaches itself to the surface of the material running through it (6) uniformly wiping the entire surface with the high velocity airflow.

Block type air wipes are generally available in standard sizes up to 7″ in diameter while EXAIR’s Super Air Wipes are available in stock diameters up to 11″ and we also offer custom sizes to suit many other applications.

If you have any items that need to have a 360 degree blowing pattern, I would enjoy hearing from you…give me a call.

Steve Harrison
Application Engineer
Send me an email
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Super Air Wipe Controls Coating Thickness On Tubing

A large manufacturing company called looking for a better solution to control the thickness of a curing agent being applied to the outside of tubing used in the automotive industry. The tubing is formed in an extruder and travels through a liquid cooling chamber and then air dried. After the tubing is dried, it is sent to a spray chamber where the curing agent is applied to the exterior. On the exit side of the spray chamber, the customer had installed several flexible air lines placed around the perimeter of the tubing to blow air across the surface to help control the coating thickness. This worked somewhat but they were seeing an increase in the amount of rejected material as the air pattern was sporadic and uneven, which caused streaking and dry spots in certain areas of the tubing. They reviewed our web site and familiarized themselves with our Air Wipes but were unsure of the best design and size to fit their need so they reached out for assistance.

After further discussing the process, their tube O.D. sizes range from 3/8″ – 1/2″, making our 1″ Air Wipe the ideal solution. As far as the design, the Standard or Super Air Wipe, I recommended they use our Model # 2451 Super Air Wipe kit due to the aluminum construction and stainless steel wired braided hoses being able to withstand the potential temperature in the area of 200°F. The kit includes a filter separator to remove any water or contaminants in the supply and a pressure regulator which would allow them to control the flow and force of the exiting air, to help “dial” it in to fit the demand of the application.

Super Air Wipe is available in sizes from 1/2″ up to 11″ in Aluminum construction and up to 4″ in Stainless Steel construction.

 

EXAIR Air Wipes features a split design, which can easily be clamped around the material, to provide a 360° uniform airflow, perfect for treating the surface of round shapes, like extruded tubing. If you have an application where you are needing to dry, cool or clean the outside of a pipe, hose or cable, contact an application engineer for help making the best product selection.

Justin Nicholl
Application Engineer
justinnicholl@exair.com
@EXAIR_JN