Exair Standard Air Knife

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Standard Air Knife™

	Hard hitting curtain of air for web, sheet and part blowoff. A quiet, energy efficient way to clean, dry or cool parts, webs or conveyors. The Standard Air Knife utilizes the coanda effect (wall attachment of a high velocity fluid) to create air motion in its surroundings. Using a small amount of compressed air as a power source, the Standard Air Knife pulls in large volumes of surrounding air to produce a high flow, high velocity curtain of air for blowoff.
Model 2012 12" (30cm) Standard Air Knife opens mustard packets prior to fill.
	Printable PDF File

Applications

Advantages

Part drying after wash

Up to 10 dBA noise reduction

Sheet cleaning in strip mills

Reduced air consumption

Conveyor cleaning

30:1 air amplification

Part or component cooling

Aluminum or stainless steel

Web drying or cleaning

Compact, rugged, easy to install

Environmental separation

Stock lengths to 36" (91cm)

Bag opening/fill operations

Unlimited system lengths

Pre-paint blowoff

No moving parts

Scrap removal on converting operations

Variable force and flow

How the Standard Air Knife Works
	Compressed air flows through the inlet (1) into a plenum chamber (2). It is then throttled through a thin nozzle (3) extending the length of the Standard Air Knife. This primary airstream adheres to the coanda profile (4), which turns it 90° and directs the flow down the face of the unit. The primary stream immediately begins to entrain surrounding air (5), for amplification ratios of 30:1 at 6" (15cm).
		Kits include a Standard Air Knife, shim set, filter separator and pressure regulator.

Why the Standard Air Knife?

Compare Blowoffs

Amplification ratios (entrained air to compressed air) of 30:1 are achieved with the Standard Air Knife, compared to 3:1 for drilled or slotted pipe. Air savings of 40% to 90% are possible when replacing these "homemade" blowoff devices. Pay-out is normally measured in weeks, not months or years.

The Standard Air Knife dramatically reduces "wind shear" by gradually introducing the entrained air to the ejected compressed air. Noise level is typically cut in half. The result is a high velocity, high volume sheet of air with reduced noise level and air consumption.

Type of Blowoff		Air Consumption		Sound Level
Model #	Description	SCFM	SLPM	dBA
110018	18" (46cm) Super Air Knife	52	1329	71
2018	18" (46cm) Std. Air Knife	61	2234	87
N/A	18" (46cm) drilled pipe*	141	3996	92
* drilled pipe has (37) 1/16" (1.59mm) holes on 0.5" (13mm) centers

Standard Air Knife Specifications

The Standard Air Knife is available in six standard lengths of 6", 12", 18", 24", 30" and 36" (15, 30, 46, 61, 76 and 91cm). Special lengths up to 36" (91cm) and unlimited system lengths are available. Any number of Standard Air Knives may be installed across a given area.

Filtration:
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 Standard Air Knife is available in either aluminum or stainless steel construction.

Regulation:
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.

Shim Sets:
A Standard Air Knife has a .002" (.05mm) gap setting. This gap is set with a shim positioned between the cap and body of the Standard Air Knife. Force
and flow through the Standard Air Knife may be easily increased by adding shims to open the gap. Kits include a shim set (three additional shims).

Dimensions

Front View

Side View
(Aluminum)

Side View
(Stainless Steel)

Performance

Standard Air Knife Performance with .002" (.05mm) thick shim installed
Pressure Supply		Air Consumption per Inch		Velocity @ 6" from target		Sound level @ 3'	Force per Inch @ 6" from target
PSIG	Bar	SCFM	SLPM	FPM	M/S	dBA	Ounces	Grams
20	1.4	1.3	37	4000	20.3	69	0.45	13
40	2.8	2.0	57	5800	29.5	78	1.1	31
60	4.1	2.7	76	8500	43.2	84	2.0	57
80	5.5	3.4	96	11,000	55.9	87	2.7	77
100	6.9	4.1	116	13,000	66	90	3.3	94

Ordering Information
P/N	Description	Order Now!
EX2006	Exair 2006 6" (15cm) Air Knife
EX2006SS	Exair 2006SS 6" (15cm) Stainless Steel Air Knife
EX2012	Exair 2012 12" (30cm) Air Knife
EX2012SS	Exair 2012SS 12" (30cm) Stainless Steel Air Knife
EX2018	Exair 2018 18" (46cm) Air Knife
EX2018SS	Exair 2018SS 18" (46cm) Stainless Steel Air Knife
EX2024	Exair 2024 24" (61cm) Air Knife
EX2024SS	Exair 2024SS 24" (61cm) Stainless Steel Air Knife
EX2030	Exair 2030 30" (76cm) Air Knife
EX2030SS	Exair 2030SS 30" (76cm) Stainless Steel Air Knife
EX2036	Exair 2036 36" (91cm) Air Knife
EX2036SS	Exair 2036SS 36" (91cm) Stainless Steel Air Knife
EX2206	Exair 2206 6" (15cm) Air Knife Kit
EX2206SS	Exair 2206SS 6" (15cm) Stainless Steel Air Knife Kit
EX2212	Exair 2212 12" (30cm) Air Knife Kit
EX2212SS	Exair 2212SS 12" (30cm) Stainless Steel Air Knife Kit
EX2218	Exair 2218 18" (46cm) Air Knife Kit
EX2218SS	Exair 2218SS 18" (46cm) Stainless Steel Air Knife Kit
EX2224	Exair 2224 24" (61cm) Air Knife Kit
EX2224SS	Exair 2224SS 24" (61cm) Stainless Steel Air Knife Kit

EX2230	Exair 2230 30" (76cm) Air Knife Kit
EX2230SS	Exair 2230SS 30" (76cm) Stainless Steel Air Knife Kit
EX2236	Exair 2236 36" (91cm) Air Knife Kit
EX2236SS	Exair 2236SS 36" (91cm) Stainless Steel Air Knife Kit
EX2306	Exair 2306 6" (15cm) Air Knife Shim Set
EX2306SS	Exair 2306SS 6" (15cm) Stainless Steel Shim Set
EX2312	Exair 2312 12" (30cm) Air Knife Shim Set
EX2312SS	Exair 2312SS 12" (30cm) Stainless Steel Shim Set
EX2318	Exair 2318 18" (46cm) Air Knife Shim Set
EX2318SS	Exair 2318SS 18" (46cm) Stainless Steel Shim Set
EX2324	Exair 2324 24" (61cm) Air Knife Shim Set
EX2324SS	Exair 2324SS 24" (61cm) Stainless Steel Shim Set
EX2330	Exair 2330 30" (76cm) Air Knife Shim Set
EX2330SS	Exair 2330SS 30" (76cm) Stainless Steel Shim Set
EX2336	Exair 2336 36" (91cm) Air Knife Shim Set
EX2336SS	Exair 2336SS 36" (91cm) Stainless Steel Shim Set

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Standard Air Knife
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