Canadian Finishing & Coatings Manufacturing Magazine September/October 2021 - 35

PAINT AND COATINGS MANUFACTURING: TiO2
THE SOLUTION
AODD pumps have long set the standard in efficient, effective and safe TiO2
pumping.
This pumping technology was invented 65 years ago by Jim Wilden, the founder of Wilden
pumps. Today, there is a full range of diaphragm pumps available that are ideally equipped
for use in paint and coatings production, some of which have been outfitted with innovative
Air Distribution System (ADS) that allow them to deliver world-class efficiency in paintproduction
applications.
of the product run while also being
able to reliably handle shear-sensitive
materials.
While AODD pumps can capably
handle the general challenges of
transferring TiO2
, there is one specific
challenge that must be overcome
- though TiO2
appears to be a very
fine powder, it is very abrasive in
slurry form, which poses a threat to
the longevity of the AODD pump's
diaphragms. Specifically, the high
level of abrasiveness of TiO2
slurry
exacerbates a phenomenon known
as " outer piston abrasion, " which is a
primary failure mode for AODD pumps.
Outer piston abrasion happens with
all standard diaphragm designs that
rely on an inner and outer piston to
hold the diaphragm in place. During its
operation, the diaphragm flexes around
the outer piston causing normal wear
of the diaphragm at the point where
they touch. Add a highly abrasive
slurry like TiO2
sandpaper
like
and the touching acts
the
on
diaphragm,
dramatically impacting its service
life. This abrasion, if left unchecked,
will cause the diaphragms to fail
prematurely.
The result of diaphragm failure is
increased pump downtime, and higher
maintenance, repair and replacement
costs - and you can add cleanup costs
to the equation if a product leak occurs.
In these days where reliable throughput
and product containment are at a
premium as manufacturing facilities
look to optimize their operating costs,
any interruption
in
schedule, or costs associated with a
product leak, can be deleterious to the
manufacturer's bottom line.
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Canadian Finishing & Coatings Manufacturing Magazine September/October 2021

Table of Contents for the Digital Edition of Canadian Finishing & Coatings Manufacturing Magazine September/October 2021
