.
ky Powerful tank cleaning for small barrels and drums
Alfa Laval GJ 7
Application
The smallest rotary impingement tank cleaning device, the Alfa Laval
GJ 7 easily fits through a 3.8 cm access hole. Capable of operating at
both high and low pressures, this device delivers 2.27 kg. of cleaning
force at .76 m. The Alfa Laval GJ 7 offers quick and easy cleaning of
barrels, drums, and other small vessels in a wide variety of industries.
The device is part of the world-renowned Gamajet range of high
impact tank cleaning devices.
Working principle
The Gamajet range of high impact tank cleaning devices combine
pressure and flow to create high impact cleaning jets. Cleaning occurs
at the point at which the concentrated stream impacts the surface. It
is this impact and the tangential force that radiates from that point
which blasts contaminants from the surface, scouring the tank interior.
In conjunction with this impact, the device is engineered to rotate in
a precise, repeatable and reliable, 360° pattern. This full-coverage,
global indexing pattern ensures the entire tank interior is cleaned,
every time.
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TECHNICAL
DATA
PHYSICAL DATA
Lubricant . . . . . . . . . . . . . . . . . . . Food grade
Max. throw length . . . . . . . . . . . . . 2 - 2.5 m
Materials
1.4404 (316L), PTFE, EPDM (FKM and FFKM available)
Pressure
Working pressure . . . . . . . . . . . . . . 3.5 - 83 bar
Recommended pressure . . . . . . . . . 5.5 - 55 bar
Temperature
Max. working temperature
Max. ambient temperature
Cleaning Pattern
Weight . . . . . . . . . . . . . . . . . . . . . 6.8 kg.
Connections
Standard thread
. . . . . . . . 95°C
. . . . . . . . 140°C
. . . . . . . . . . . . . . . ½” NPT, ½” BSP
Options
Electronic rotation sensor to verify 3D coverage.
Caution
Do not use for gas evacuation or air dispersion.
First Cycle
Full Pattern
The above drawings show the cleaning pattern achieved on a
cylindrical horizontal vessel. The difference between the first cycle and
the full pattern represents the number of additional cycles available to
increase the density of the cleaning.
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Certificate
2.1 material certificate
Disclaimer: Information in this product data leaflet is intended for general guidance purposes. Specific data for device selection and sizing is
available upon request.
Flow Rate
Impact Throw Length
cm.
m3/h USgpm
1.35
300.4
6
5.75
1.25
2-Nozzle: 2.03mm(.080")
Stator: 5H
5.5
275.4
110
250.4
100
225.4
90
200.4
80
5.25
1.15
1.05
0.95
5
2-Nozzle: 1.9mm(.075")
Stator: 4H
4.75
4.5
3.75
3.5
0.75
0.65
0.55
175.4
70
2-Nozzle: 1.78mm(.070")
Stator: 4X
150.4
60
2-Nozzle: 1.78mm(.070")
Stator: 4
125.4
50
100.4
40
75.4
30
50.4
20
25.4
10
4.25
4
0.85
3.25
3
2.75
2.5
2.25
0.45
2
0
100
0
5
10
200
15
300
20
400
25
500
30
35
600
40
700
45
55
rpm
4
10
Stator
15
300
20
400
25
500
30
35
600
40
700
45
50
800 psi
55
bar
min
6 4 4X
5H
4H
Stator
5.75
6.5
5
10
200
10
Inlet pressure
- - - Wetting, — Impact cleaning
Cleaning Time .7-.8 NOZ
MV
SV
100
5
bar
Cleaning Time .100 NOZ
min
7
3-Nozzle: 2.54mm(.100")
2-Nozzle:1.78mm(.070")
Stator: 4X
2-Nozzle:1.78mm(.070")
Stator: 4
0
Inlet pressure
rpm
4
2-Nozzle: 2.54mm
(.100")
0
800 psi
50
in.
120
5
5.5
6
5.25
6
5.5
12
5
6
12
4.75
7
7
4.5
8
15
8
15
9
9
10
24
2.5
4
16 3.75
3.5
3
4.5
4.25
4
20
5
3.25
2.54mm Nozzle
(.100")
2.54mm
(.100")
10
20
1.5
0.34
2
0.44
2.5
0.54
3
0.64
3.5
0.74
4 USgpm
0.84
m3/h
3.5
1.90mm
(.075")
1.78mm
(.070")
3
2
0.45
2.5
3
0.55
0.65
3.5
0.75
4
0.85
4.5
0.95
1.05
2.03mm Nozzle
(.085")
5
5.5
USgpm
1.15
1.25
m3/h
Dimensions (mm)(in)
A
176
B
115
C
27
D
17
E
42
F
43
G
48
Standard Design
The choice of nozzle diameters can optimize jet impact length and flow rate at the desired pressure. As standard documentation, the Alfa Laval GJ 7
can be supplied with a “Declaration of Conformity” for material specifications.
TRAX simulation tool
TRAX is a unique software that simulates how the Alfa Laval GJ 7 performs in a specific tank or vessel. The simulation gives information on wetting
intensity, pattern mesh width and cleaning jet velocity. This information is used to determine the best location of the tank cleaning device and the correct
combination 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 tank
cleaning applications. The TRAX demo is free and available upon request.
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Wetting Intensity
(US
gallon/ft2)
0.06
2.5
0.07
2.9
0.08
3.4
0.09
3.9
0.11
4.5
0.13
5.3
0.15
6.1
0.17
7.1
0.20
8.3
0.24
9.6
0.27
11
0.32
13
0.37
15
TD 523-208
D1.8m, H2.8m, 2xØ2.03mm Time = 1.56 min.
D1.8m, H2.8m, 2xØ2.03mm Time = 6.25 min.
.
Alfa Laval reserves the right to change specifications without prior
notification. ALFA LAVAL is a trademark registered and owned by Alfa Laval
ESE03005EN 1015
How to contact Alfa Laval
Contact details for all countries
are continually updated on our website.
Please visit www.alfalaval.com to
access the information direct.
Corporate AB.
© Alfa Laval