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■ Water Distribution System
Warm water flows through external piping (not included
with the tower) into a splash box chamber at the top of the
Aquatower. A splash box prevents the incoming water from
spilling out of the basin and helps provide uniform water
distribution. Water then flows by gravity from the basin through
nozzles to the fill.
■ Fill/Louvers/Drift Eliminators
Fill sheets include integral louvers and drift eliminators,
designed to minimize resistance to airflow. This patented
arrangement prevents water from escaping the fill sheets,
assuring proper heat transfer throughout wide variations in
airflow. Users find this fill operates ice-free even in extremely
cold weather.
The thermoformed 15 mil (.015″) thick PVC fill sheets
withstand hot water temperatures as high as 125°F. Fill sheets
are immune to biological and corrosive decay and their flame
spread rating is less than 25 per ASTM E-84. Galvanized
structural tubes support and stabilize the fill. They also hold
the bottom of the fill sheets above the cold water basin floor to
simplify basin cleaning. Removable 1″ x 1″ mesh galvanized
air inlet screens keep larger airborne trash out of the collection
basin and fill area.
Hot water distribution basin covers are provided as
standard equipment to keep the distribution basin free from
airborne debris and to reduce the likelihood of biological
growth.
All Aquatowers use Marley “Spiral Target” nozzles. These
inert polypropylene nozzles are evenly spaced thoughout the
distribution basin to assure uniform water distribution over
all portions of the fill. Their large openings resist clogging.
Nozzles are easy to remove and replace if you ever want to
change the design water flow rate.
Eliminator air-seal removed showing distribution area above fill
Spiral-target distribution nozzle
MX Fill
■ Cold Water Collection Basin
The Aquatower’s collection basin reduces operating
weight, simplifies basin cleaning, and assures proper outflow.
Water flows from the elevated area under the fill into the basin’s
rear depressed section, where side suction piping connects. A
bottom outlet is also available for gravity flow applications.
Standard equipment on each tower basin includes: a
screened suction connection; a threaded overflow connection;
a threaded and plugged drain connection; and a float-operated
make-up valve. Models 492A through 496B also include a
bottom outlet conforming to 125# flange specification. A blank
cover plate is provided to seal the outlet connection not used.