Canadian Finishing & Coatings Manufacturing Magazine Jan/Feb 2023 - 46

PAINT AND COATINGS MANUFACTURING: CASE STUDY
With nearly 200 AODD pumps, divided between one-inch,
two-inch and three-inch (25-76 mm) variants, Bill Murphy,
technical field specialist for Phoenix Pumps, knew Wilden had
an alternative to increase the mean time between repair (MTBR)
for Dunn-Edwards' operations.
The one-piece, zero-adhesive design of the Chem-Fuse
Diaphragm perfectly complements the high demand of the
facility's AODD pumps because they have been engineered to
hold up against acids, caustics and other aggressive fluids, such
as latex. Chem-Fuse Diaphragms feature a one-piece design
that eliminates the need for an outer piston that is a common
leak point in traditional pie-shaped diaphragms that create a
trap area for product buildup that can wear over time, especially
when pumping abrasive fluids. Chem-Fuse offers safe, clean and
reliable product transfer with no product entrapment areas to
minimize product contamination, risk liabilities, and ultimately
increase diaphragm life. Available in Wil-Flex material in oneinch
(25 mm), one and a half-inch (38 mm), two-inch (51 mm),
three-inch (76 mm), and four-inch (102 mm) sizes, Chem-Fuse
also offers up to 100 per cent increased flow and suction lift
compared to other reduced-stroke IPDs. It also is easy to install
and easy to clean for faster changeovers.
The test pumps outfitted with Chem-Fuse exceeded one year
of operation-eight hours per day, five days per week. Operating
relatively trouble-free, the pumps equipped with Chem-Fuse
have improved Dunn-Edwards' operation by increasing the
service life of the pumps, requiring fewer service hours, minimal
maintenance downtime and costly draining cycles.
" The two main takeaways from having seen them in operation
is that they are lasting longer and the reduction in mating surfaces
makes them easier to rebuild and naturally more resilient as a
result, " said Chapin. " There are basically three parts to assemble
versus the old setup, which was seven. "
With the elimination of potential leak areas, extended flex
life, and easy cleanability for efficient product changing, the
Chem-Fuse design was ideal for the aggressive latex-handling
applications inside the Dunn-Edwards facility.
Because of the success of the AODD pumps outfitted with
Chem-Fuse, the Dunn-Edwards facility will install Chem-Fuse
diaphragms into every three-inch pump it uses for latex-handling
applications, ensuring a pump fleet with an operational life
measured in years instead of months. Doing so will allow the
facility to continue upholding its reputation of providing an array
of high-quality paints and coatings in a safe and eco-friendly
manner.
Rob Jack is the business development manager for Wilden, based
in California. He can be reached at rob.jack@psgdover.com.
46
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Canadian Finishing & Coatings Manufacturing Magazine Jan/Feb 2023

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