Everything You Need to Know About Electric Diaphragm Pumps

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Everything You Need to Know About Electric
Diaphragm Pumps
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lectric diaphragm pumps, also referred to as
electric operated diaphragm pumps, serve as a
versatile and dependable pumping solution for a
wide range of industrial uses. In contrast to
pumps that depend on impellers, diaphragm pumps
employ a flexible membrane (diaphragm) to
generate suction and pressure for transferring
fluids. This innovative design comes with
multiple benefits, making electric diaphragm
pumps an attractive option for various industries.
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How Do Electric Diaphragm Pumps
Operate? Typically, an electric diaphragm pump
comprises of a casing, a diaphragm, a driving
mechanism (motor), and some check valves. The
electric motor powers either a camshaft or
linkage mechanism, causing the diaphragm to move
back and forth.
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When the diaphragm contracts inwardly (stroke),
it increases the chamber volume, creating a
vacuum that pulls fluid into the pump chamber
through the inlet check valve. Conversely, when
the diaphragm expands outwardly (stroke), it
reduces the chamber volume, pushing fluid out
through the discharge check valve.
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There are two configurations of electric
diaphragm pumps Single diaphragm pumps These
pumps employ one diaphragm for fluid transfer and
are typically used in applications requiring
lower flow rates and pressures.
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Double-diaphragm pumps Double-diaphragm pumps,
also known as electric operated double diaphragm
pumps (EODD Pump), utilise two diaphragms
separated by a chamber filled with a fluid, like
oil. The movement of one diaphragm transfers
pressure to the other, creating a design that
enables higher flow rates and pressures compared
to single diaphragm pumps.
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Advantages of Electric Diaphragm Pumps Electric
diaphragm pumps offer benefits over other pump
types, making them a preferred option for
different applications. Here are some key
advantages
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Self-priming Electric diaphragm pumps have the
ability to self-prime, allowing them to remove
air from the line and start pumping without
requiring pre-filling with liquid. This feature
is particularly useful when the pump is situated
above the source. 
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Dry-run capability In contrast to pumps that can
incur damage if operated without electric
diaphragm, EODD pump can function safely even
when the fluid source runs dry.
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Handling solids and shear-sensitive fluids
Thanks to their positive displacement design,
electric diaphragm pumps can effectively manage
fluids with suspended solids or abrasive
particles. Their pumping action minimises shear
stress on fluids, making them suitable for shear
liquids like paints and pigments, polymers, latex
solutions, slurries, mayonnaise, ketchup and
sauces, creams and shampoos, coatings, milk, and
oil emulsion.
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Accurate dosing Electric diaphragm pumps offer
dosing control, making them perfect for
applications that require precise chemical or
fluid dosing.
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Energy efficient Compared to air-operated
diaphragm pumps, electric diaphragm pumps are
more energy efficient, resulting in lower
operating costs. Quiet operation Electric
diaphragm pumps produce less noise than other
pump types. Easy maintenance Their simple design
allows EODD Pumps to offer lower maintenance
costs with minimal downtime.
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Applications of Electric Diaphragm
Pumps Electric diaphragm pumps are versatile.
They find diverse applications across industries.
Some common examples include
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Transferring chemicals in chemical processing
Pumping food-grade liquids in food and beverage
processing Dosing pharmaceuticals in the
pharmaceutical industry
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• They are also used in industries such as
• Water treatment
• Printing
• Paint and coatings

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• The construction sector also used EODD pumps for
  applications like
• Grout pumping
• Dewatering
• Agriculture sector uses diaphragm pumps for
• Spraying pesticides and fertilizers

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Selecting the Right Electric Diaphragm Pump When
choosing a diaphragm pump for your needs, there
are a few key factors to take into account Flow
rate and pressure requirements First, youll
need to determine the flow rate (amount per time
unit) and pressure (force per area unit) for your
use. This will help you in choosing the pump with
exact specifications to satisfy your needs.
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Fluid type Its important to think about whether
the materials of the pumps materials are
compatible with the fluid it will be
handling. Electric diaphragm pumps come with
wetted parts (such as diaphragms and valves) made
from materials like steel, PTFE (Teflon), or
Santoprene to ensure they work well with various
fluids.
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Viscosity The thickness of the fluid (its
resistance to flow) can impact how well the pump
performs. While electric diaphragm pumps can
handle a range of viscosities, its essential to
choose one thats suitable for handling your
specific viscosity level.
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Particle size If your fluid contains particles,
consider the particle size that the pump can
effectively handle. Portability Depending on
where you plan to use it, portability might be a
factor worth considering. Electric diaphragm
pumps are generally compact and lightweight,
making them convenient for applications.
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IDEX CognitoTM A Dynamic Electric Diaphragm
Pump In the world of electric diaphragm pumps,
IDEX shines as a manufacturer recognised for its
dedication to quality and innovative solutions.
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Their commitment to excellence is evident in
their Cognito line of electric diaphragm pumps,
which are tailored to deliver top-notch
performance and user satisfaction.
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IDEX Cognito Electric Operated Double Diaphragm
Pumps The IDEX Cognito series showcases electric
operated double diaphragm pumps, renowned for
their robustness and capability to tackle
demanding tasks. These pumps encompass the
advantages of diaphragm pumps, like
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• Self-priming
• Dry run resistance, and
• Handling of solid materials

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They also provide added benefits apart from the
ones listed above. CognitoTM Advantage This
exclusive technology by IDEX utilises an
IoT-enabled system for monitoring and analysis of
pump performance. It enables real-time data
collection for maintenance and enhanced process
optimisation.
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• CognitoSmartInsights Expanding on the
  CognitoTM Advantage CognitoSmartInsights offers
  data analysis to pinpoint issues and fine-tune
  pump operation for optimal efficiency.
• Material Choices The IDEX Cognito Electric
  Operated Double Diaphragm pumps present a range
  of options for pump components to meet chemical
  compatibility requirements.

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Selecting an IDEX Cognito Electric Operated
Double Diaphragm Pump By opting for an IDEX
Cognito Electric Operated Double Diaphragm pump,
you leverage the expertise of IDEXs engineering
prowess along with features found in the Cognito
series. When evaluating your options, remember to
take into account these aspects in addition to
the selection criteria mentioned earlier
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Different Cognito Models IDEX Cognito provides a
range of Electric Operated Double Diaphragm pump
models with varying flow rates and pressure
capabilities tailored to suit your specific
application needs accurately.
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Utilising Data If remote monitoring and
leveraging data for process optimisation are
crucial for your operations, features like
CognitoTM Advantage and CognitoSmartInsights from
IDEX Cognito can offer significant benefits for
you.
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• By teaming up with IDEX Cognito, you not only get
  access to top-notch electric diaphragm pumps but
  also a holistic solution that
• Boosts pump efficiency
• Simplifies maintenance tasks, and
• Enables data-informed decision-making for your
  industrial processes

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Conclusion Electric diaphragm pumps present a
solution for an array of industrial applications
that demand reliable, versatile, and efficient
fluid transfer solutions. Their ability to carry
self-prime runs, manage solids, and work with
shear fluids makes them highly valuable across
diverse industries. When selecting an electric
diaphragm pump, factor in considerations such as
flow rate, pressure requirements, fluid
characteristics, and portability specific to your
application.
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For users looking to enhance performance and
adopt data-driven management practices
effectively, the range of IDEX Cognito Electric
Operated Double Diaphragm pumps serves as an
ideal choice.
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The IDEX Cognito stands out for its design
functionalities, such as CognitoTM Advantage and
CognitoSmartInsights, and a range of material
choices. Its an option for individuals looking
to enhance their operations.
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Whether you need a dependable electric diaphragm
pump or a sophisticated system with remote
monitoring features, theres an electric
diaphragm pump that fits your requirements
perfectly. Discover the options on offer. Harness
the power of electric diaphragm pumps for your
industrial needs.
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