The Pressure filters available
standard Plant range are of two basic types, in
terms of the filter media. Filters are available
with either graded sand. Depending on individual
merits, either one or a combination of both can
be used for particular water.
Pressure filter comprises a MS pressure vessel
containing the media, provided externally with
piping & valves to direct and control the
operation of filtering treatment of water.
An inlet distributor in the form of inverted
bell-mouth funnel directs the inflow of raw upwards
towards the top dish end to ensure even distribution
across the surface area of the filter bed. Filtered
water leaves the filter uniformly by means of
a bottom collecting system, which also serves
to distribute evenly the flow of water used to
clean the filter. The bottom collecting system
at the bottom, is a header with perforated laterals.
The filtering media is supported by layers of
crushed graded gravel and pebble of specific size.
The internal & external surface of sand media
filter vessel is painted with anticorrosive [epoxy
Pressure gauges at the inlet and outlet are standard
fittings to measure pressure loss across the unit.
A motorized (timer base)operated multi-port valve
fitted in a frontal piping to control the operation
i.e. filter , backwash and rinse the filters.
The valve supplied with standard design.