Air Qya[ity lProducts
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Applications:
The sandtrap louversAST-1500,IST:1500and GST-1500are an externallouversusedin dry, dusty or
sandyenvironment.They are especiallydesignedto separatesandand large dust particlesfrom the inlet
air for air-conditioningplants.The designhelpsmaintaininga reasonableair flow rate characteristics
by
vertically
arranged
double
U
sections
meansof
and holes for sanddrainageto ensurekeepingmaintenance
to the minimum. The sandtrap louver can alsobe usedas a naturalventilatoror to alleviatethe load on
the main filtration stagesof air conditioningequipment.
INSTALLATION DIMENSIONS
Horizontalsection
L<2400
L>2400
l-,0o,
Supplied as separatesectionto be assembledon site
L+100
Verticalsection
1200< H<2400
Assembly(1)
H> 2400
Assembly(2)
il
/
It
Additional support for
reinforcement by others
a
Zamzanm
Air
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TECHNICAL INFORMATION :
Characteristics:
Construction:
. Aluminium construction:
. Self-cleaning.
. Sizesare availablein 150mm incriment in lenght.
U-sectionwith thickness=1.5 mm
. Singlesectionminimum dimensionL x H = 150x150 mm.
mountingframe- thickness1.5mm
. GalvanisedSteelconstructionwith thickness= 1.5 mm
. Single sectionwith H = l2O0 to 2400mm is suppliedwith
paintedor not in RAL colour
additionalsandchute (seeassebly1).
. SinglesectionmaximumdimensionLxH=2400 x 2400mm. . StainlessSteelconstructionwith thickness=1.2 mm
. Sandtrap louverswith H >2400 mm are split in height &
suppliedwith additionalsandchuteto be assembledon site SPECIFICATIONSDESCRIPTION:
(seeassemly2).
Example:
Aluminium sandtrap louvre demandingno maintenance,
with a doubleU- sectionand a sandevacuation
underneaththe louvre. The louvre is equippedwith a
ACCERSSORIES:
birdscreenin galvanisedsteelwire mesh(12.5 x12.5x
Birdscreen: in galvanisedsteelwire mesh
g 0.8 mm). Made out of aluminiumsheet.
(12.5 x 12.5x 0 0.8 mm) at the back of the louvre.
Type : AST 1s01
nomdim (LxH) ,..x ...mm
PRESSUREDROP:
2s
0
'75
50
100
125
pn
Irrrrlrrrrlrrrr
lrrrrlrrrrlrrrn/s
0,5
1,5
1,0
2,0
Application for a free flow or duct junction.
Indicatedspeedsare the speedsfor a nominal flow (LxH).
The speedin the slotsis triple this speed.
Usedin normalconditions,the sandtraplouvresaredeveloped
for velocitiesup to 2 mls. Velocitiesabove2 mls areusually
undesirablein dusty or sandyatriospheresas the ability of
the efficiency
thelouvreto removethe dustparticlesdecreases
of approximatly40-60Vocanbe expectedat velocitiesof 1.5
m/s. dependingon sandor dust particle size.
Selectionexample:
. flow =7200 m3lh
. Surfaceareafor v = 1.5m/s: 1.333m'z
. Dimensions(LxH): 1.350x 1000mm
. Pressurelossat v = 1.5m/s : 45 Pa
Performance Data:
The filtration performanceis dependanton the dust type
andthe velocityof the air:
Particle Size
Filtration Efficiency in Vo
at 1,0m/s
note: oarticle size in micron.
OrderingKey:
Example:
IST1501, StainlessSteelconstructionwith birdscreen450 x 450
I
S
T
I
5
0
I
0
4
5
0
0
/
5
0
0 : without birdscreen
1 : with birdscreen
G: galvanisedsteel consfuction
I : StainlessSteel constuction
A: aluminum constuction