A simple solution to excessive air consumption and noise levels on compressed air blowoff operations. EXAIR Air Nozzles and Jets produce outlet flows up to 25 times compressed air consumption using a small amount of compressed air as the power source.
Air savings, compared to open copper tubes or pipes commonly used for blowoff can be as high as 80%. Less compressed air means less noise. The typical noise level reduction is 10 dBA. All EXAIR Air Nozzles and Jets meet WorkSafe Australia and OSHA maximum dead-ended pressure and sound level exposure requirements and carry the CE mark.
An open 1/4″ (6mm) copper tube, by contrast, ejects pure compressed air at up to 40 standard cubic feet per minute (1,133 SLPM), the entire output of a 10 horsepower compressor. Annual energy cost can exceed $1,000 per year. Noise levels in excess of 100 dBA are commonly produced. When supply pressure exceeds 30 PSIG (2 BAR), an open pipe, tube or drilled holes violates OSHA static pressure requirements.
How Air Nozzles Work
Air Nozzles use the Coanda effect to amplify compressed airflow up to 25 times or more. As illustrated above, compressed air (black arrows) is ejected through a series of nozzles on the outer perimeter. As the air travels along the outer wall of the nozzle, surrounding air (blue arrows) is entrained into the stream. The airstream that results is a high volume, high velocity blast of air at minimal air consumption. The air is always ejected so it can vent safely, well below OSHA dead end pressure requirements, should the nozzle end be blocked.
How Air Jets Work
Air Jets utilise the Coanda effect (wall attachment of a high velocity fluid) to produce air motion in their surroundings. As illustrated above, a small amount of compressed air (black arrows) is throttled through an internal ring nozzle above sonic velocity. A vacuum is produced, pulling large volumes of surrounding, or “free” air, through the jet (blue arrows). Both the outlet and inlet can be ducted for remote positioning. If the end is blocked, flow simply reverses at well below OSHA dead end pressure requirements.
Watch the Video
Safe and Efficient Use Of Compressed Air
The inefficient use of compressed air for blowoff applications may create problems due to the energy costs, noise level and potential danger to personnel who are exposed to high pressure air. Open air pipes, copper tubes and drilled pipes are a few of the common abusers. They consume tremendous amounts of energy and often produce noise levels over 100 dBA.
Open Air Pipe or Copper Tube
Turbulent compressed air blasts straight out of the pipe or tube. It not only wastes huge amounts of compressed air but also violates OSHA noise and dead end pressure requirements.
Reduce Energy Costs
The best way to cut energy costs is through proper maintenance and use of the compressed air system. Leaks and dirty filters require maintenance on a regular basis. Energy savings can also be realised when replacing outdated compressor motors and controls with high efficiency models that often pay for themselves in a short period of time.
The most important factor to dramatically boost efficiency is proper use. Using engineered products like EXAIR’s Super Air Nozzles can cut operating costs since they use only a fraction of the compressed air of typical blowoffs. In addition, all of the Air Nozzles and Jets shown on this website can be cycled on and off with an instantaneous response. EXAIR’s EFC Electronic Flow Control is a control that limits compressed air use by turning on the air only when a part is present.
Air Consumption of Open Tube and Pipe
Pressure Supply
Air Consumption of Homemade Blowoffs
PSIG
BAR
Copper Tube
Open Pipe
1/4″
5/16″
3/8″
1/8″
1/4″
3/8″
80
5.5
SCFM
33
58
87
70
140
240
SLPM
934
1,641
2,462
1,981
3,962
6,792
Saving Money and Compressed Air
The table above shows the air consumption for typical homemade blowoffs. For air consumption and other data on EXAIR’s Air Nozzles and Jets, please see Specifications
Consider the following example where a Model 1102 Mini Super Air Nozzles replaces an 1/8” (3.2mm) open pipe. The compressed air savings is easy to calculate and proves to be dramatic. Payout for Air Nozzles and Jets, including filter and installation cost is measures in weeks – not years, as is the case for other cost reduction equipment. Based on a 40-hour work week, 52 weeks a year.
Example:
Existing blowoff is 1/8” (3.2mm) open pipe at 80 PSIG (5.5 BAR) supply.
Air consumption, from the table above, is 70 SCFM (1,981 SLPM).
Use a 1/8 Model 1102 Mini Super Air Nozzle also at 80 PSIG (5.5 BAR) supply.
Air consumption, from the table under Specifications , is 10 SCFM (283 SLPM).
For this example, the blowoff is continuous. If the duty cycle was 20%, then air saved would be 60 x .2 = 12 SCFM (1,698 x .2 = 350 SLPM).
Most large plants know their cost per 1,000 standard cubic feet of compressed air (10,000 standard litres). If you don’t know your actual cost per 1,000 SCF, $0.25 is a reasonable average to use. (Cost per 10,000 standard litres is approximately $0.089.)
Dollars saved per hour = SCFM saved x 60 minutes x cost/1,000 SCF (SLPM saved x 60 minutes x $0.089/10,000)
= 60 x 60 x $0.25/1,000 (= 1,698 x 60 x $0.089/10,000) = $0.90 per hour = $36.00 per week = $1,872.00 per year savings for One nozzle!
Reduce Noise Levels
High noise levels are a common problem for many plants. Compressed air noise often exceeds WorkSafe and OSHA noise level exposure requirements, resulting in hearing loss to those working in close proximity. Noisy blowoffs at 80 PSIG (5.5 BAR) that produce noise levels of 100 dBA can be reduced to only 74 dBA when using a Super Air Nozzle. At that pressure, it is still possible to obtain hard-hitting force without the high noise.
WorkSafe Australia Maximum Allowable Noise Exposure
LAeq,8h = 85 dB(A)
Exposure Time
16* hrs
12* hrs
8 hrs
4 hrs
2 hrs
1
hr
30 min
15 min
7.5 min
3.8 min
1.9 min
57 sec
28.8 sec
14.4 sec
7.2 sec
3.6 sec
1.8 sec
0.9 sec
Sound Level dBA
80
82
85
88
91
94
97
100
103
106
109
112
115
118
121
124
127
130
* The adjustment factor for extended workshifts is taken into account.
OSHA Maximum Allowable Noise Exposure
Standard 29 CFR-1910.95(a)
Hours per day (constant noise)
8
7
4
3
2
1
0.5
Sound Level dBA
90
91
95
97
100
105
110
Eliminate Harmful Dead Ended Pressures
Air can be dangerous when the outlet pressure of a hole, hose or copper tube is higher than 30 PSIG (2 BAR). In the event the opening is blocked by a hand or other body part, air may enter the bloodstream through the skin, resulting in a serious injury. All of the Air Nozzles and Jets manufactured by EXAIR have been designed for safety. All are safe to be supplied with higher pressure compressed air and meet OSHA standard 29 CFR 1910.242(b).
The Model 1213-12 Super Blast Safety Air Gun with Model 1111-12 Super Air Nozzle Cluster blows paper dust out of a web press with the airflow reaching deep into confined areas.
These PEEK (Plastic) Large Super Air Nozzles resist chemicals used in solar panel manufacturing.
A 1” High Power Flat Super Air Nozzle is used to tip a part from a chute and onto a conveyor.
This Atto Super Air Nozzle is blowing dust out of computer slots prior to assembly
This Stainless Steel Large Super Air Nozzle removes debris from a stainless steel screw conveyor.
EXAIR’s 303SS Air Jets provide reliable, efficient blowoff and cleaning within corrosive, high temperature or washdown environments.
Oddly shaped parts often require a combination of Air Nozzles and Air Jets for proper blowoff.
This PEEK material Atto Super Air Nozzle was chosen because of its non-marring quality for a blow off application on a sensitive lens.
This Pico Super Air Nozzle is keeping dust from accumulating on this photoelectric sensor
This 1” Flat Super Air Nozzle removes chips from a roller chain.
A Back Blow Air Nozzle cleans chips and coolant from inside a machined pipe
The M4 Back Blow Nozzle cleans out connections to a machining fixture.
A combination of Model 6013 High Velocity Air Jets and Model 6042 Adjustable Air Amplifiers dry this engine casting.
2” Flat Super Air Nozzles blow off metal parts as they are lifted through a vacuum chamber.
Flexible Stay Set Hoses™ are ideal where frequent repositioning of air nozzles is required.
Swivel Fittings make it easy to adjust the aim of the Air Nozzles and Jets.
Type 316 Stainless Steel Super Air Nozzles withstand high temperatures up to 538°C (1000°F), corrosive environments and mechanical wear.
Super Air Nozzles with Stay Set Hoses provide adjustability and precision.
Large Super Air Nozzles provide high force values for heavy duty applications like removing products from conveyor belts.
The Type 316 Stainless Steel 1” Flat Super Air Nozzle can be used in environments up to 538°C (1000°F).
A stainless steel 1” Flat Super Air Nozzle removes condensation from a label prior to scanning.
Super Air Nozzle Clusters blow debris across the 6-foot (1,829mm) continuous steel strip and off the other side.
EXAIR manufactures a wide selection of Air Nozzles and Jets, which are divided into two groups. The first group includes Air Nozzles and Jets that deliver force up to 624 grams (22 ounces) and are suitable for most applications. The second group includes Air Nozzles that produce high force up to 10.43 kg (23 lbs) where additional reach and force are required.
Type 303 Stainless Steel – high temperatures and corrosive environments. Maximum temperature 426°C (800°F)
Type 316 Stainless Steel – high temperatures and corrosive environments, and mechanical wear. Maximum temperature 426°C (800°F)
Brass – general purpose applications. Maximum temperature 204°C (400°F)
Zinc Aluminium Alloy – general purpose applications. Maximum temperature 121°C (250°F)
PEEK (plastic) – replaces metals in harsh environments. Offers chemical resistance, non-marring. Maximum temperature 160°C (320°F)
Standard Force Air Nozzles
This group of EXAIR air nozzles produce up to 624 grams (22 ounces) of force and are suitable for most applications.
Compact – fit easily in tight spaces
Engineered for efficient use of compressed air and optimum blowoff force
This group of EXAIR air nozzles produce up to 10.43 kg (23 lbs) of blowoff force and are suitable for applications requiring additional power and reach.
Strong force for part ejection, blowoff, drying and cooling
Higher air consumption for greater force and wider blowoff pattern
Standard Force Air Nozzles and Jets Comparison (sorted by compressed air consumption at 80 PSIG / 5.5 BAR)
Model
Material
Description
Inlet
Air Consumption
Force
Sound Level dBA
SCFM SLPM
Ozs Grams
1108SS
Stainless Steel – Type 316
Atto Super Air Nozzle
M4 x 0.5
2.5
71
2*
56.7
58
1108-PEEK
PEEK (Plastic)
Atto Super Air Nozzle
M4 x 0.5
2.5
71
2*
56.7
58
1108SS-BP
Stainless Steel – Type 316
Atto Super Air Nozzle
1/8 BSPM
2.5
71
2*
56.7
58
1108-PEEK-BP
PEEK (Plastic)
Atto Super Air Nozzle
1/8 BSPM
2.5
71
2*
56.7
58
1109SS
Stainless Steel – Type 316
Pico Super Air Nozzle
M5 X 0.5
4.9
139
5*
141.7
68
1109-PEEK
PEEK (Plastic)
Pico Super Air Nozzle
M5 X 0.5
4.9
139
5*
141.7
68
1109SS-BP
Stainless Steel – Type 316
Pico Super Air Nozzle
1/8 BSPM
4.9
139
5*
141.7
68
1109-PEEK-BP
PEEK (Plastic)
Pico Super Air Nozzle
1/8 BSPM
4.9
139
5*
141.7
68
1110SS
Stainless Steel – Type 316
Nano Super Air Nozzle
M6 X 0.75
8.3
235
8.1*
230
75
1110-PEEK
PEEK (Plastic)
Nano Super Air Nozzle
M6 X 0.75
8.3
235
8.1*
230
75
1110SS-BP
Stainless Steel – Type 316
Nano Super Air Nozzle
1/8 BSPM
8.3
235
8.1*
230
75
1110-PEEK-BP
PEEK (Plastic)
Nano Super Air Nozzle
1/8 BSPM
8.3
235
8.1*
230
75
BP1001
Brass
Safety Air Nozzle
1/8 BSPF
10
283
9*
255
78
BP1102
Zinc Aluminium Alloy
Mini Super Air Nozzle
1/8 BSPF
10
283
9*
255
71
BP1102-PEEK
PEEK (Plastic)
Mini Super Air Nozzle
1/8 BSPF
10
283
9*
255
71
BP1102SS
Stainless Steel – Type 316
Mini Super Air Nozzle
1/8 BSPF
10
283
9*
255
71
BP1103
Zinc Aluminium Alloy
Mini Super Air Nozzle
1/8 BSPM
10
283
9*
255
71
BP1103SS
Stainless Steel – Type 316
Mini Super Air Nozzle
1/8 BSPM
10
283
9*
255
71
BP1126
Zinc Aluminium Alloy
1″ Flat Super Air Nozzle
1/8 BSPF
10.5
297
9.8†
278
75
BP1126SS
Stainless Steel – Type 316
1″ Flat Super Air Nozzle
1/8 BSPF
10.5
297
9.8†
278
75
BP1010SS
Stainless Steel – Type 316
Micro Air Nozzle
1/8 BSPM
13
368
12*
340
80
BP1009
Aluminium
Adjustable Air Nozzle
1/8 BSPM
13
368
12**
340
79
BP1009SS
Stainless Steel – Type 316
Adjustable Air Nozzle
1/8 BSPM
13
368
12**
340
79
BP1100
Zinc Aluminium Alloy
Super Air Nozzle
1/4 BSPF
14
396
13*
368
74
BP1100-PEEK
PEEK (Plastic)
Super Air Nozzle
1/4 BSPF
14
396
13*
368
74
BP1100SS
Stainless Steel – Type 316
Super Air Nozzle
1/4 BSPF
14
396
13*
368
74
BP1101
Zinc Aluminium Alloy
Super Air Nozzle
1/4 BSPM
14
396
13*
368
74
BP1101SS
Stainless Steel – Type 316
Super Air Nozzle
1/4 BSPM
14
396
13*
368
74
BP1002
Brass
Safety Air Nozzle
1/4 BSPF
17
481
16*
454
80
BP1002SS
Stainless Steel – Type 316
Safety Air Nozzle
1/4 BSPF
17
481
16*
454
80
BP1003
Brass
Safety Air Nozzle
3/8 BSPF
18
509
18*
510
83
6019
Brass
Adjustable Air Jet
1/8 BSPM
18
509
16***
454
83
6019SS
Stainless Steel – Type 316
Adjustable Air Jet
1/8 BSPM
18
509
16***
454
83
6013
Brass
High Velocity Air Jet
1/8 BSPM
22
622
20†
567
82
6013SS
Stainless Steel – Type 316
High Velocity Air Jet
1/8 BSPM
22
622
20†
567
82
BP1122
Zinc Aluminium Alloy
2″ Flat Super Air Nozzle
1/4 BSPF
22
622
22†
624
77
BP1122SS
Stainless Steel – Type 316
2″ Flat Super Air Nozzle
1/4 BSPF
22
622
22†
624
77
1004SS
Stainless Steel – Type 316
Back Blow Nozzle
M4 x 0.5
4.5
127
N/A
N/A
75
BP1006SS
Stainless Steel – Type 316
Back Blow Nozzle
1/4 BSPF
22
622
N/A
N/A
80
BSPF = BSP Female
BSPM = BSP Male
All sound levels measured at 36″ (914mm)
*Force measured at 12″ (305mm) from target
**Force measured at 12″ (305mm) from target with a .008″ (0.20mm) factory setting
***Force measured at 12″ (305mm) from target with a .006 (0.15mm) factory setting
†Force measured at 12″ (305mm) from target with a .015″ (0.38mm) shim installed
High Force Air Nozzles Comparison (sorted by compressed air consumption at 80 PSIG / 5.5 BAR)
Model
Material
Description
Inlet
Air Consumption
Force
Sound Level dBA
SCFM SLPM
Lbs Grams
BPHP1126
Zinc Aluminium Alloy
1″ High Power Flat Super Air Nozzle
1/8 BSPF
17.5
495
1†
454
82
BPHP1126SS
Stainless Steel – Type 316
1″ High Power Flat Super Air Nozzle
1/8 BSPF
17.5
495
1†
454
82
BPHP1002
Brass
High Power Safety Air Nozzle
1/4 BSPF
32
906
1.8*
816
87
BPHP1002SS
Stainless Steel – Type 316
High Power Safety Air Nozzle
1/4 BSPF
32
906
1.8*
816
87
BP1104
Zinc Aluminium Alloy
Super Air Nozzle
3/8 BSPF
35
991
1.9*
862
82
BP1104SS
Stainless Steel – Type 316
Super Air Nozzle
3/8 BSPF
35
991
1.9*
862
82
BP1104-PEEK
PEEK (Plastic)
Super Air Nozzle
3/8 BSPF
35
991
1.9*
862
82
BP1105
Zinc Aluminium Alloy
Super Air Nozzle
3/8 BSPM
35
991
1.9*
862
82
BP1105SS
Stainless Steel – Type 316
Super Air Nozzle
3/8 BSPM
35
991
1.9*
862
82
BPHP1125
Zinc Aluminium Alloy
2″ High Power Flat Super Air Nozzle
1/4 BSPF
37
1,039
2.2†
998
83
BPHP1125SS
Stainless Steel – Type 316
2″ High Power Flat Super Air Nozzle
1/4 BSPF
37
1,039
2.2†
998
83
BP1111-4
Zinc Aluminium Alloy
Super Air Nozzle Cluster
3/8 BSPF
56
1,585
3.2*
1,451
82
1008SS
Stainless Steel – Type 316
Back Blow Air Nozzle
1 BSPF
57
1,614
—
—
89
BP1106
Zinc Aluminium Alloy
Super Air Nozzle
1/2 BSPF
60
1,699
3.3*
1,497
87
BP1106SS
Stainless Steel – Type 316
Super Air Nozzle
1/2 BSPF
60
1,699
3.3*
1,497
87
BP1107
Zinc Aluminium Alloy
Super Air Nozzle
1/2 BSPM
60
1,699
3.3*
1,497
87
BP1107SS
Stainless Steel – Type 316
Super Air Nozzle
1/2 BSPM
60
1,699
3.3*
1,497
87
BP1112
Zinc Aluminium Alloy
Super Air Nozzle
3/4 BSPF
91
2,577
4.5*
2,577
96
BP1112SS
Stainless Steel – Type 316
Super Air Nozzle
3/4 BSPF
91
2,577
4.5*
2,577
96
BP1113
Zinc Aluminium Alloy
Super Air Nozzle
3/4 BSPM
91
2,577
4.5*
2,577
96
BP1113SS
Stainless Steel – Type 316
Super Air Nozzle
3/4 BSPM
91
2,577
4.5*
2,577
96
BP1111-7
Zinc Aluminium Alloy
Super Air Nozzle Cluster
1/2 BSPF
98
2,773
5.7*
2,585
85
BP1114
Zinc Aluminium Alloy
Super Air Nozzle
1 BSPF
135
3,823
6.6*
3,005
99
BP1114SS
Stainless Steel – Type 316
Super Air Nozzle
1 BSPF
135
3,823
6.6*
3,005
99
BP1115
Zinc Aluminium Alloy
Super Air Nozzle
1 BSPM
135
3,823
6.6*
3,005
99
BP1115SS
Stainless Steel – Type 316
Super Air Nozzle
1 BSPM
135
3,823
6.6*
3,005
99
BP1111-12
Zinc Aluminium Alloy
Super Air Nozzle Cluster
1 BSPF
168
4,754
9.8*
4,445
89
BP1116
Zinc Aluminium Alloy
Super Air Nozzle
1-1/4 BSPF
188
5,324
9.4*
4,252
102
BP1117
Zinc Aluminium Alloy
Super Air Nozzle
1-1/4 BSPM
188
5,324
9.4*
4,252
102
BP1118
Zinc Aluminium Alloy
Super Air Nozzle
1-1/4 BSPF
300
8,495
15*
6,804
106
BP1119
Zinc Aluminium Alloy
Super Air Nozzle
1-1/4 BSPM
300
8,495
15*
6,804
106
BP1120
Zinc Aluminium Alloy
Super Air Nozzle
1-1/4 BSPF
460
13,026
23*
10,433
109
BP1121
Zinc Aluminium Alloy
Super Air Nozzle
1-1/4 BSPM
460
13,026
23*
10,433
109
BSPF = BSP Female
BSPM = BSP Male
All sound levels measured at 36″ (914mm)
*Force measured at 12″ (305mm) from target
*Force measured at 12″ (305mm) from target with a .025″ (0.64mm) shim installed