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kyAlfa Laval GJ A2Optimal tank cleaning through 2" openings
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ApplicationDesigned to fit through a 5.08 cm (2”) sanitary fitting, the Alfa LavalGJ A2 is ideal for retrofit applications to replace resource-heavy staticspray balls and costly manual cleaning. Compact and efficient,the Alfa Laval GJ A2 can accommodate typical opening sizes whiledelivering the improved cleaning effectiveness and range of rotaryimpingement. The efficient and durable design is ideal for tankcleaning in hygienic environments such as food and beverage andpersonal care applications.
Working principleThe GJ range of high impact tank cleaning devices combine pressureand flow to create high impact cleaning jets. Cleaning occurs at thepoint at which the concentrated stream impacts the surface. It is thisimpact and the tangential force that radiates from that point whichblasts contaminants from the surface, scouring the tank interior. Inconjunction with this impact, the device is engineered to rotate in aprecise, repeatable and reliable, 360° pattern. This full-coverage,global indexing pattern ensures the entire tank interior is cleaned,every time.
TECHNICAL DATA
Lubricant . . . . . . . . . . . . . . . . . . . Self-lubricatingMax. throw length . . . . . . . . . . . . . 4 - 5 m.
PressureWorking pressure . . . . . . . . . . . . . . 2.75 - 14 barRecommended pressure . . . . . . . . . 4 - 10 bar
Cleaning Pattern
First Cycle Full Pattern
The above drawings show the cleaning pattern achieved on acylindrical horizontal vessel. The difference between the first cycle andthe full pattern represents the number of additional cycles available toincrease the density of the cleaning.
Certificate2.1 material certificate
PHYSICAL DATA
Materials316L, PPS*, PTFE*, EPDM* (FKM* and FFKM*)* FDA compliance 21CFR§177
TemperatureMax. working temperature . . . . . . . . 95°CMax. ambient temperature . . . . . . . . 140°CWeight . . . . . . . . . . . . . . . . . . . . . 2.26 kgSurface finish . . . . . . . . . . . . . . . . Ra 0.8 µm
ConnectionsStandard thread . . . . . . . . . . . . . . . 1" ISO 2852 ClampAvailable option . . . . . . . . . . . . . . . 3/4" NPT female Thread
3/4" Rp female ThreadODØ38,1/1½" ISO 2037Weld-on
CautionAvoid hydraulic shock, hard and abrasive particles in the cleaningliquid, as this can cause increased wear and/or damage of internalmechanisms. In general, a filter in the supply line is recommended. Donot use for gas evacuation or air dispersion. For steaming we referto the manual.
Flow Rate (2 nozzle) Impact Throw Length
2 4 6 8 10 12 14 16 18 20
0.9
1.4
1.9
2.4
2.9
3.4
3.9
4.4
4.9
5.4
4
6
8
10
12
14
16
18
20
22
24
30 60 90 120 150 180 210 240 270 300 psi
m3/h USgpm
bar
2.54mm (.100")
3.4mm (.135")
4.2mm (.165")
3.8mm (.150")
5.1mm (.200")
4.7mm (.187")
Nozzle
2 4 6 8 10 12 14 16 18 20
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
2.7
2.9
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
10
30 60 90 120 150 180 210 240 270 300 psi
m. ft.
bar
2.54mm (.100")
Nozzle
Inlet pressure Inlet pressure
- - - Wetting, — ImpactFlow Rate (4 nozzle) Impact Throw Length (4 nozzle)
2 4 6 8 10 12 14 16 18 20
0.9
1.9
2.9
3.9
4.9
5.9
6.9
7.9
4
7
10
13
16
19
22
25
28
31
34
30 60 90 120 150 180 210 240 270 300 psi
m3/h USgpm
bar
2.54mm (.100")
3.4mm (.135")
4.2mm (.165")
3.8mm (.150")
4.7mm (.187")
Nozzle
3.2mm (.125")
2 4 6 8 10 12 14 16 18 20
0.9
1.1
1.3
1.5
1.7
1.9
2.1
2.3
2.5
2.7
2.9
3
3.5
4
4.5
5
5.5
6
6.5
7
7.5
8
8.5
9
9.5
10
30 60 90 120 150 180 210 240 270 300
m. ft.
3.2mm (.125")
2.54mm (.100")
2.54mm (.100")
Nozzle
psi
bar
Dimensions Cleaning Time
0.9 1.4 1.9 2.4 2.9 3.4 3.9 4.4 4.9 5.4
4
5
6
7
8
9
10 2
4
6
8
10
12
14
16
18
20
22
4 6 8 10 12 14 16 18 20 22 24 USgpm
rpm min
m3/h
30
3.75
3
5
LV
STD
HV
7.5
Stator
6
15
10
MV
A B C D E F G Hmm 503 343 431 31 30 47 47 61in 19.8 13.5 18.1 1.2 1.2 1.9 1.9 2.4
Standard DesignThe choice of nozzle diameters can optimize jet impact length and flow rate at the desired pressure. As standard documentation, the Alfa Laval GJ A2can be supplied with a “Declaration of Conformity” for material specifications.
TRAX simulation toolTRAX is a unique software that simulates how the Alfa Laval GJ A2 performs in a specific tank or vessel. The simulation gives information on wettingintensity, pattern mesh width and cleaning jet velocity. This information is used to determine the best location of the tank cleaning device and the correctcombination of flow, time, and pressure to implement.A TRAX demo containing different cleaning simulations covering a variety of applications can be used as a reference and documentation for tankcleaning applications. The TRAX demo is free and available upon request.
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Wetting Intensity
2.5
2.9
3.4
3.9
4.5
5.3
6.1
7.1
8.3
9.6
11
13
15
0.06
0.07
0.08
0.09
0.11
0.13
0.15
0.17
0.20
0.24
0.27
0.32
0.37
TD 523-208
(USgallon/ft2)
D2.2m(85”), H3.6m(140”), 2x3.81mm (2xØ3/16”) Time = 2
min.
D2.2m(85”), H3.6m(140”), 2x3.81mm (2xØ3/16”) Time = 8
min.
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Alfa Laval reserves the right to change specifications without prior notification.
How to contact Alfa LavalContact details for all countriesare continually updated on our website.Please visit www.alfalaval.com toaccess the information direct.
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