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Air knife

The Regular Air Knives performs at a 30:1 air amplification ratio that is less efficient that the Advanced Air Knife. Air consumption is ~3.4 SCFM per inch at 80 PSIG. (Made from aluminum or stainless steel metals.)

The Advanced Air Knife provides the best performance with a 40:1 air amplification ratio, making it the most efficient. Air consumption is ~2.9 SCFM per inch at 80 PSIG. (Made from aluminum or stainless steel metals.)

$116.00$2,542.00

Description

What is an Air knife?

An Air Knife is a device that blows compressed air to clean industrial products. Air Knifes uses laminar airflow to create a curtain of air to dry, clean, remove excess oils, liquids and dust from your manufacturing conveyor applications. The Air Knives may also be used for: printing, labelling, product cooling and packaging. The Air Knife nozzle design utilizes the Coandă Effect discovery by Romanian inventor Henri Coandă.

What types of Air knives do we carry?

Advanced Air Knife

The Advanced Air Knife provides the best performance with a 40:1 air amplification ratio, making it the most efficient Air Knife Streamtek offers.

Regular Air Knife

The Regular Air Knife provides good performance with a 30:1 air amplification ratio that is less efficient than the Advanced Air Knife. Air consumption is ~3.4 SCFM per inch at 80 PSIG. The Regular Air Knife is a good choice when a less expensive alternative is required. It has slightly higher noise levels and uses more compressed air than the Advanced Air Knife.

Advanced Air Knife

Regular Air Knife

Preset Gap

.002″

.002″

Air amplification ratio

40:01:00

30:01:00

Air consumption @80 PSIG

~2.9 SCFM per inch

~3.4 SCFM per inch

Material

Aluminum & Stainless Steel

Aluminum & Stainless Steel

Noise level

Low

Medium

Available Size

2″ (51mm) up to 54″ (1372 mm)

3″ (76mm) up to 54″ (1372 mm)

How does an Air Knife work?

Advanced Air Knife Video

(A) Compressed air enters the inlet at the rear or end ports and flows into a plenum chamber

(B) Surrounding air is entrained by the airflow producing an amplification ratio of 40:1 at a 6 inch distance which adheres to the coanda effect. The knife consists of a high-intensity, uniform sheet of laminar airflow sometimes known as streamline flow.

(C) The airflow now travels straight out of the Air Knife. The amplified air stream is a hard-hitting sheet of laminar flow with minimal wind shear, which reduces energy used in blow-off and cooling applications.

 

Regular Air Knife Video

(A) Compressed air flows through the inlet at the rear (or end) ports, and into a plenum chamber.

(B) As the compressed air stream leaves the Air Knife, the surrounding air is entrained into the airflow for an amplification ratio of 30:1 @ 6″ away and adheres to the coanda profile.

(C) The airflow now turns 90 and travels down the front face of the Air Knife. The amplified air stream is a hard-hitting sheet of laminar flow with minimal wind shear, which translated into reduced energy use in blow-off and cooling.

 

 

Air Knife Specifications

The Advanced Air Knife is available in thirteen standard IN-STOCK lengths of 2″ (51″), 3″ (76 mm), 6″ (152 mm), 8″ (203 mm), 9″ (229 mm), 12″ (305 mm), 18″ (457 mm), 24″ (610 mm), 30″ (762 mm), 36″ (914 mm), 42″ (1067 mm), 48″ (1219 mm), and 54″ (1372 mm).

The Regular Air Knife is available in twelve standard IN-STOCK lengths of 3″ (76 mm), 6″ (152 mm), 8″ (203 mm), 9″ (229 mm), 12″ (305 mm), 18″ (457 mm), 24″ (610 mm), 30″ (762 mm), 36″ (914 mm), 42″ (1067 mm), 48″ (1219 mm), and 54″ (1372 mm).

Air Knife Material Comparison
Temperature Rating Corrosion Rating
Aluminum Air Knife 275°F (135°C) Low
Stainless Steel (Type 303) Air Knife 400°F (204°C) Medium
*Stainless Steel (Type 316) Air Knife 800°F (427°C) High

Advanced Air Knife Performance

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 Ounces Grams
20 1.4 1.3 36 5,000 25 56 0.6 17
40 2.8 1.7 48 7,000 36 61 1.1 31
60 4.1 2.1 59 9,600 49 65 1.8 51
80 5.5 2.9 82 11,800 60 68 2.5 71
100 6.4 3.3 93 13,500 69 71 3.2 91

Regular Air Knife Performance

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 Ounces Grams
20 1.4 1.5 42 4,000 20 64 0.5 14
40 2.8 2.1 60 5,800 30 73 1.2 34
60 4.1 2.7 77 8,500 43 80 2.0 57
80 5.5 3.5 99 11,000 56 83 2.8 79
100 6.4 4.1 16 13,000 66 86 3.3 94

Industrial Air Knife Blower

  • Clean circuit board holes, flat sheet rubber and plastic; moulds.
  • Blow off liquid, chemicals, dirt, chips, and/or water prior to labeling or packaging.
  • Remove water, coolant, dust, and scrap in parts manufacturing and assembly operations.
  • Paper dust removal and control.

Air Knife Drying Systems

  • Bottles and cans, castings, sheet metal, and dip tank solution stripping.
  • Extrusions, wire, produce, wood preservative, drive-thru car wash, paint, coatings, and cloth.

Advantages of Air Knives

  • Quiet (69 dBA for most applications)
  • Minimal air consumption (40:1 air amplification)
  • Variable force and flow
  • No moving parts – maintenance free
  • Easy mounting
  • Compact, rugged, easy to install
  • 316 stainless steel available on special order
  • Special lengths available
  • Unlimited system lengths of uninterrupted airflow available

Air knife cooling

  • Extrusion cooling, food processing, and dimensional stability control.
  • Cool metal parts prior to coating and/or painting.
  • Replace general manufacturing fans
  • Cooling to set some inks

Compressed Air Knife Systems Applications

The Streamtek Air Knife uses innovative compressed air technologies to improve productivity, increase equipment efficiency, deliver enclosure cooling, spot cooling, conveying, and blow-off. If you don’t find a solution and/or idea for your application, or if you want additional details, call our factory at 1-705-770-4455 or email an Application Engineer at support@stream-tek.com.

Additional information

Weight N/A
Dimensions N/A
Type

Regular air knife, Advanced air knife

material

Aluminum, Stainless Steel

Size

2", 3", 6", 8", 9", 12", 18", 24", 30", 36", 42", 48", 54"

Accessories

Deluxe Kit: Unit, Filter Separator, Pressure Regulator /w Gauge, Standard Kit: Unit and Filter Separator, Unit Only