Air Knives

C.C. Steven, your ANSWER to compressed air challenges.

Curtain Transvectors

ITW Vortec’s Curtain Transvector® Air Knives efficiently blowoff wide surfaces of debris as well as provide high speed drying for a broad range of industrial applications. Ionizing Curtain Transvectors® add a Static Neutralizing Bar to kill static cling and discharge dust and particles for blowoff.

Watch Video on Air Knives!

Applications:

Since Curtain Transvectors are air amplifiers, they use a small amount of compressed air to deliver a powerful, high velocity, laminar sheet of air over wide areas, moving webs, sheets, film, strips, auto bodies and other large assemblies and objets. Our patented design produces increased thrust and velocity, reduced noise, excellent uniformity and significantly outperforms any competing, wide blowoff device.

Curtain Transvectors, as well as the Ionizing versions, have numerous and diverse processing, finishing, fabrication, assembly, and other industrial uses for cooling, drying, cleaning or static removal on wide surfaces.

Curtain Transvector at Work

Air Knives Deliver Flat Sheet of Amplified Air

Features & Benefits

  • Fraction of the cost of fans and blowers
  • No guards or rotating machinery
  • Instant on/off
  • Provides uniform blowoff for wide or long surfaces
  • Increases airflow with reduced consumption
  • Range of lengths available
  • Compact and easily mounted
  • No moving parts – Maintenance free
  • Ionizing option eliminates static
  • Quiet – Meets OSHA noise specifications
  • Output air is easily regulated

Curtain Transvectors are used for:

  • Printing and labeling
  • Converting and packaging
  • Films and laminating
  • Form and fill
  • Sheet and web materials
  • Conveying or hold down
  • Food processing
  • Paint preparation and drying

Description

Curtain transvectors use a small amount of compressed air to deliver a high velocity laminar sheet of air over wide areas such as moving webs, sheets, strips, autobodies and other large objects. Curtain Transvectors amplify the free surrounding air at a ratio of up to 25 times the compressed air consumed to provide greatly increased airflow while drastically reducing compressed air consumption.

Curtain Transvectors use the same impulse principle as other Transvector products to accelerate a large mass of stationary air with a thin sheet of compressed air, released at sonic velocity, through a linear slot which is 0.002” wide. As this sonic velocity air exits the slot, it collides with nearby still air, inducing and entraining a much larger flow.

Features

  • No moving parts, maintenance free
  • Easily controlled output
  • Fraction of the cost of variable speed blowers or fans
  • No guards or safety hazards
  • Instant on / off
  • Quiet — meets OSHA requirements
  • Easily mounted
  • Compact, ideal for limited space applications

Specifications

The Curtain Transvector Performance Chart below lists the SCFM consumption at various inlet pressures for each size of Curtain as well as the width and velocity of the output flow at various distances from the Curtain.


PSIG

Consumption / Output

Flow Characteristics at Distance from Outlet
6” 12” 18” 24” 2” 6” 12” 18”

10
SCFM 7.8 15.6 23.4 31.2 Velocity 975 825 575 475
Output 195 390 585 780 Width 0.5 2.5 5.0 5.75

20
SCFM 9.6 19.2 28.8 38.4 Velocity 1375 1250 1100 950
Output 240 480 720 960 Width 0.75 2.0 4.0 4.5

30
SCFM 12.6 25.2 3708 50.4 Velocity 1825 1750 1650 1400
Output 315 630 945 1260 Width 1.0 2.25 4.25 4.75

40
SCFM 15.0 30.0 45.0 60.0 Velocity 2775 2550 2150 1900
Output 375 750 1125 1500 Width 1.75 2.5 4.75 5.5

60
SCFM 21.0 42.0 63.0 84.0 Velocity 5500 4600 3200 3000
Output 525 1050 1575 2100 Width 2.0 2.75 5.25 7.5

80
SCFM 25.8 51.6 77.4 103.2 Velocity 7300 6350 4550 4200
Output 645 1290 1935 2580 Width 2.25 2.75 5.5 8.0

100
SCFM 33.0 66.0 99.0 132 Velocity 9200 7800 5650 5200
Output 825 1650 2475 3300 Width 2.5 3.0 5.75 8.25