Characteristics of some fluids are negatively affected due to agitation
and mixing; examples include paints might be thinned, cornstarch thickened and
egg whites separated from yolks. “Gentle pumping” improves process and
Semi liquid mixtures and viscous fluids are less “flowable” and often
contain particulate. Pumps that withstand the potential for abrasive wear
as well as handling the suction and discharge requirements for such applications
improve reliability and reduce maintenance.
As containment of the pumped fluid protects employees and the work
environment, likewise isolation of the pumped fluid from the environment
contributes to product purity. Peristaltic pumps eliminate a leakage path,
reducing potential of contamination either way.
These process characteristics relate directly to efficiency and
reliability. Compared to other pump styles, peristaltic hose pumps perform
the best for each of these common inlet conditions.
Technological advancements in peristaltic hose design have increased the
application range of modern peristaltic hose pumps. Innovative materials
and complex multilayered hose designs have increased the restitutive ability of
peristaltic pump hoses. Since the main wear component is the hose,
maximizing the number of compressions between replacements corresponds directly
to cost effectiveness.
It is easy being “green”!
The chemical processing industry as relates to pumping applications often involves non-water based fluids in which the
process or personnel benefit from being isolated from the material pumped.
Peristaltic pump applications in the CPI are often additive in nature,
transferring or dispensing fluid between locations.
Potential for cross contamination is eliminated by swapping hoses for
different colors rather than using expensive solvents that ultimately become a
hazardous fluid to recycle or dispose.
Water and waste treatment (WWT) applications involve dispensing chemicals
and moving gritty sludge.
It is common to replace AOD pumps due to sticky polymers clogging check
valves, high pressure related stalling and cold weather icing of input air
because peristaltic pumps have no valves, can output higher pressures and are
unaffected by cold weather. Get rid of the AOD’s and reduce your air
It is important to transfer abrasive flocculants, sludge and gritty scum
for further processing and disposal with a sealless design that is capable of
sufficient suction and pressure to move these semi liquid materials without
Food & Beverage Manufacturing
Typical WWT Chemicals
Disinfection & odor removal
Aluminum Sulfate Sodium Aluminate
Coagulation (flocculation) of suspended impurities
Removal of excess fluoride
Considering the effort required to make a nice “from scratch” meal at
home, imagine the throughput and automation required for mass production of
food. Whether it is a vitamin supplement, loaf of bread or your favorite
snack, peristaltic hose pumps are used to dose, mix and transfer ingredients due
to their accuracy and ease of clean-up.
There are no check valves or anything else in contact with the fluid
except the hoses, which are available in several FDA and EC certified materials.
Ingredients such as vitamins have a tendency towards crystallization and
are abrasive in nature. Since the rotary pumping mechanism of a
peristaltic hose pump is external to the material pumped, there is less
contamination and leakage potential. Dry cavity roller style peristaltic hose
pumps have a light food-grade grease applied externally to the hose whereas the
shoe style peristaltic pumps require glycerin or glycol reservoir for hose
A “MUST” have Pump!
Peristaltic hose pumps are used by wineries for transferring must (whole,
destemmed or pressed grapes), lees (residual yeast) and wine. Their gentle
pumping action decreases oxidation, shaking, emulsion and deformation of
grapes/seeds. They are also used for tank transfers (settling and blending
of wines) and barrel racking (transferring wine from aging barrels to tanks for
bottling). Unlike flexible impeller pumps which are easily damaged when
operated dry, peristaltic hose pumps can vacuum out a sump
or vessel quickly.
Having a flow range from 18 GPH to over 200 GPM and capable of a discharge
pressure over 200 PSI, modern peristaltic hose pumps truly solve common problems
due to their simplistic, easy-to-clean and maintain design.