Created for water, wastewater and chemical-process
applications, the pumps have been designed without the need for contour plates
on the liquid side of the diaphragm. This straight-through valve-and-head
design allows for improved flow characteristics and the ability to handle
corrosive liquids. A
pump’s ability to handle 98 percent sulfuric acid at leachate treatment plants
that are located at sanitary landfills is a crucial consideration during the
process of treating for ammonia in the plant’s wastewater operations. During
this application, the 98 percent sulfuric acid is introduced to the
wastewater-treatment stream during the nitrification/de-nitrification process. The pumps can handle viscosities in excess of 5,000 cp and
pump capacity can be adjusted through the use of a micrometer dial while the
pump is running. In addition, the suction lift of the pumps allows users to
pull the sulfuric acid as much as 25 feet from tank to tank. The seal-less
design of the pumps eliminates the catastrophic breakdowns that can plague
other pump types. Pumps that feature seals are prone to product leakage that
allows the sulfuric acid to enter the pump’s gearbox.