Vertical Reverse Flow Units
GENERAL DESCRIPTIONS :
The Vertical Reverse Flow Units ( Self contained
cabinets ) are designed for installation as Powder
Sampling or Dispensing Hoods. These cabinets are produced
with working area of different sizes to suit the application.
Each cabinet is factory tested especially for the
These cabinets are designed to provide high degree
of protection of cabinet users and other staff from
exposure to aerosols or vapours which may be generated
during the preparation, manipulation, sampling and
dispensing of drugs. These cabinets are useful in
applications where immaculate working environment
Vertical Reverse Flow Units is a self contained system
to control potent powders when sampling or dispensing
These units are meant to provide protection to the
operator and environment. Here the floating particles
are sucked within the working area towards the pre-filters
with filtration accuracy of 5.0 microns and 3.0 microns.
Thus creating a negative pressure zone within the
working area. The air path then moves from the pre-filters
to HEPA filters & down towards the pre-filters
This re-circulation of air ensures the suction of
free particles within the working area to wards the
pre-filters and protect the operator.
These units are factory assembled and are made up
of S. S. 304 grade Stainless Steel material. These
units have smooth welded corners.
A direct driven statically and dynamically balanced
blower assembly with a volume control damper is used
for air circulation within the cabinet. Easy access
is provided to the blower compartment.
DISCHARGE FILTERS :
Discharge filters are generally HEPA filters certified
to achieve an filtration efficiency of not less than
99.97% and filtration accuracy of 0.3 microns. Hence
the discharge air complies with Class 100 U.S. Fed.
Std. 209 - E.
Pre-filters made from the fibre glass media to achieve
high filtration efficiency and filtration accuracy
of upto 5.0 microns. These are used to block major
particles from the ambient air being sucked by the
blowers and passing it through the discharge filters.
Thus enhancing the life of discharge filters.
Low voltage touch control panel in the front of the
cabinet is used for the unit operation. The unit comes
with the switchgear for safe & trouble free operation.
The fluorescent light fitted with glare free diffuser
panels ensures proper visibility with the working
A Magnehelic gauge is used for static pressure measurement
across the HEPA filters and also to monitor the blower
» Hour meter to record operation time.
» Static pressure transmitter. ( 4 - 20 mA )
» Variable blower speed control device.
» Ceiling or Stand mounting arrangement.
» Germicidal U.V. light.
» Power outlet.
» Temperature controlled Heated work surface.
» Onsite validation.
Writing and execution of DQ, IQ and OQ carried out
by our factory trained engineers.