Centrifugal Pumps: Definition and Working Principle - Tapflo

Main centrifugal pump parts
Designs of centrifugal pumps
Performance curves
NPSHa and NPSHr
Self-priming abilities
NPSHr vs self-priming ability
Cavitation
Centrifugal pumps material configurations
Main applications of centrifugal pumps
Key Parameters for proper centrifugal pump selection
Centrifugal pumps – advantages and disadvantages
Advantages of tapflo pumps over the competition
Case Study: Industrial Pumps in Alcohol Production
Tapflo centrifugal pumps – accessories
Custom-built centrifugal pumps by Tapflo
Certifications
FAQs about centrifugal pumps

Article author: Georgi Georgiev
Strategic R&D projects leader

Centrifugal pumps (also known as kinetic pumps, velocity pumps, dynamic pumps, or rotodynamic pumps) are among the most commonly used pump types in industrial applications. So how does centrifugal pump work? They operate by converting the mechanical energy of the drive shaft into kinetic energy via a rotating impeller. This kinetic energy is then transformed into pressure energy within the pump casing, allowing the fluid to be discharged through the pump outlet.

Main centrifugal pump parts

1. Impeller. The rotating component that imparts kinetic energy to the fluid. Closed impellers Designed for clean, low-viscosity liquids Offer high efficiency Easier to assemble because they do not require precise axial adjustment Open impellers Typically used in hygienic applications (e.g., food, pharmaceutical industries) Designed for easier cleaning and inspection Certain open impeller designs could be suitable for liquids with soft solids Semi-open (or partially open) impellers Typically designed for handling liquids with soft solids or fibrous materials Provide a balance between solids handling capability and efficiency
2. Centrifugal pump casing types: Circular volute: The circular volute design is primarily used in hygienic centrifugal pumps and in applications where casings must be manufactured from solid bars, hot forging, or cold stamping to enhance structural strength and/or design flexibility. By minimizing pressure drops within the volute, it reduces the risk of cavitation and foaming in this area in sensitive liquids, often caused by pressure and velocity fluctuations in other designs. Spiral volute: The spiral volute is typically designed to maintain a constant flow velocity throughout the volute, which helps maximize hydraulic efficiency. It is well-suited for manufacturing methods such as casting and injection molding. The inclusion of a cutwater reduces internal liquid recirculation, further enhancing performance and minimizing energy losses.
3. Pump shaft. Connects the impeller to the drive system (e.g., motor).
4. Shaft seals: Single mechanical seal: Single mechanical seals are available in a variety of designs and material configurations to suit different operating conditions and fluid types. They may feature internal or external springs. These seals can be specifically designed for clean liquids, slurries, low-viscosity fluids, high-temperature liquids, and aggressive chemicals. Additionally, there are specialized designs for hygienic, chemical, and petrochemical applications, ensuring compatibility with industry-specific standards and requirements. Single mechanical seal with quench: A single mechanical seal with a quench system is used to isolate the pumped liquid from atmospheric exposure. This prevents issues such as crystallization and evaporation of the pumped fluid. Double mechanical seal in tandem arrangement offers similar benefits to a single mechanical seal with a quench, including isolation of the pumped fluid from the atmosphere. In addition, it provides enhanced safety through automated monitoring and control of the seal condition. It offers secondary protection by preventing external leakage in the event of failure of the primary (pump-side) seal, making it suitable for hazardous or environmentally sensitive applications. Double mechanical seal in a back-to-back arrangement provides effective isolation of the pumped liquid from the atmosphere and enables automated monitoring and control of the seal condition through continuous tracking of buffer fluid pressure, temperature, and level. Additionally, it protects the seal faces from abrasive particles by maintaining the buffer liquid at a higher pressure than the pumped fluid, ensuring that only clean buffer fluid reaches the seal faces.
5. Seal housing. Supports and encloses the shaft seal.
6. Bearing support. Maintains shaft alignment and supports radial and axial loads, Monoblock (close-coupled) executions use the bearing supports of the drives (e.g., electrical motors)

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Designs of centrifugal pumps

Centrifugal pumps can be categorized based on various criteria, including:

Design type: hygienic, chemical, petrochemical, and others, depending on industry-specific requirements.

Number of stages: single-stage or multistage, which affects the pump’s pressure capabilities.

Flow type: radial flow, mixed flow, or axial flow, each suited to different head and flow rate conditions.

Shaft sealing method: such as mechanical seals or magnetic drive (mag drive), depending on leakage prevention needs.

Impeller design: including closed, semi-open (half-open), or open impellers, which influence efficiency and suitability for handling solids and air content.

Each design is developed for specific industrial applications and operating conditions, ensuring optimal performance, reliability, and compliance with process requirements.

Performance curves

Centrifugal pump performance (or characteristic) curves illustrate the relationship between flow rate (Q), head (H), shaft power (P), efficiency (η), and net positive suction head required (NPSHr), typically at a constant speed or within specific speed ranges. Each pump size within a given series covers a defined QH range through impeller trimming, maximizing the total QH coverage of the entire series. However, due to rising energy costs and the fact that pumps usually achieve their highest efficiency at the maximum impeller diameter, selecting centrifugal pumps based on QHP curves across varying speeds (via speed control rather than impeller trimming) is becoming increasingly common.

Tapflo CTX series performance curves for selection by speed

Tapflo CTX series performance curves for selection by impeller diameter

Centrifugal pumps. CTX 80-212 performace curves - selection by speed

Centrifugal pumps. CTX 80-212 performace curves - selection by impeller diameter

NPSHa and NPSHr

NPSHa (Net Positive Suction Head available) is the net pressure (or head) available at the pump inlet to prevent the liquid from vaporizing and causing cavitation. It is calculated based on the following factors:

The pressure in the suction tank can be vacuum, atmospheric, or pressurized, depending on the system design.
The static suction head (positive if the liquid level is above the pump, negative if below).
Minus the pressure losses in the suction pipeline and its components (e.g., filters, elbows, valves).
Minus the vapor pressure of the liquid at the operating temperature.

In formula terms: NPSHa = (Htank + Hstatic – Hlosses) – Hvapor

Where:

Htank is the absolute pressure at the liquid surface in the suction tank,
Hstatic is the static head (positive or negative),
Hlosses includes frictional and local pressure losses in the suction pipeline,
Hvapor is the vapor pressure of the liquid at the pumping temperature.

NPSHr (Net Positive Suction Head required) is the minimum net positive suction head needed at the pump inlet to prevent cavitation during operation. It is determined through standardized NPSH testing performed by the pump manufacturer for each specific pump model under controlled conditions.

NPSHa must always be higher than the NPSHr (Net Positive Suction Head required by the pump) to avoid cavitation and ensure reliable pump operation. A minimum safety margin of 0.5 meters is commonly recommended, though this value can vary depending on specific industrial standards or company requirements. This margin should also take into account potential liquid temperature increases inside the pump, which can raise the vapor pressure and reduce the effective NPSHa. Maintaining an adequate margin helps prevent cavitation, which can lead to damage of pump components, reduced efficiency, and operational downtime.

The NPSHr of centrifugal pumps can be reduced (i.e., improved) by using an inducer, which is a small axial-flow impeller installed at the pump inlet. The inducer increases the fluid pressure before it enters the main pump impeller, thereby enhancing the pump’s suction performance and reducing the risk of cavitation in low NPSHa conditions.

Self-priming abilities

The self-priming ability of centrifugal pumps refers to their capability to evacuate air from the suction line and create a partial vacuum, allowing the liquid to be lifted and the suction pipeline to be primed in applications involving negative suction lift. This feature enables the pump to start pumping liquid without the need for manual filling of the suction pipeline.

Tapflo self-priming series CTXS	Tapflo self-priming series CTS

NPSHr vs self-priming ability

NPSHr and self-priming ability are often misunderstood and incorrectly associated with one another. Many industry professionals mistakenly assume that a pump’s self-priming ability directly corresponds to the negative suction head (or suction lift) it can handle. In reality, these are two separate concepts:

Self-priming ability refers only to the pump’s capability to evacuate air from the suction line and create vacuum to prime itself without manual intervention.

NPSHr (Net Positive Suction Head required), on the other hand, determines whether a pump can operate without cavitation at a given suction condition, and is the key parameter in evaluating how much negative suction lift a pump can handle.

Ironically, self-priming pumps often require a higher NPSHr than conventional centrifugal pumps, making them less suitable for high negative suction lift applications, despite their self-priming capability.

Cavitation

Cavitation occurs when the pressure in the suction pipeline or within the pump falls to or below the vapor pressure of the pumped liquid at the operating temperature. This causes the liquid to vaporize, forming vapor bubbles. As these bubbles move into regions of higher pressure than the vapor pressure within the pump, they collapse violently (implode).

The implosions generate high-energy microjets in just a few microseconds, occurring more than a hundred times per second. These jets can exceed velocities of 50 m/s, with local pressures reaching several thousand bar. Such extreme conditions can lead to severe erosion of pump components, increased noise and vibration, reduced efficiency, and even mechanical failure.

Centrifugal pumps material configurations

Material selection for industrial centrifugal pumps is critical and must be tailored to the specific liquid being pumped and the requirements of the industry in which the pump is used. Understanding material choices is essential when analyzing typical centrifugal pump applications, since pumps are widely used to transport fluids with very different chemical and physical properties:

Aggressive chemicals may require pumps made entirely of plastic materials (such as polypropylene or PVDF), which offer excellent corrosion resistance where metals would otherwise corrode.
In food, beverage, and pharmaceutical applications, only materials that are certified for contact with food products such as stainless steel (typically AISI 316L or 316Ti) and FDA compliant elastomers can be used. These materials must also meet hygienic design standards (e.g., EHEDG or 3-A).
The material of the mechanical seal faces is also crucial. Seal faces must not only resist chemical attack by the pumped fluid but also be compatible with the hydrodynamic lubrication properties of that fluid. Common combinations include carbon vs. silicon carbide or silicon carbide vs. silicon carbide, depending on the application’s abrasiveness, temperature, and viscosity.

Tapflo CTX or CT in ss316L	Tapflo CTP or CTM

Main Applications of Centrifugal Pumps

Food and Beverage Industry: Used for pumping raw materials and processed liquids such as water, vegetable oils, palm oil, animal fats, alcohol, beer, juice, coffee, tea, wine, and other consumables. In these centrifugal pump applications, equipment must often comply with hygienic standards (e.g., EHEDG, 3-A).	Pharmaceutical Industry: Applied for the transfer of oils, raw materials, ethyl alcohol, solvents, purified water, and other chemically pure or sterile liquids. Pumps are typically made from certified materials and must comply with top hygienic standards for the pharmaceutical industry.
Chemical Industry: Suitable for handling acids, alkalis, organic solvents, industrial oils, chemical reagents, liquid fertilizers, and industrial wastewater. Here, material compatibility and corrosion resistance are critical due to the aggressive nature of many fluids.	Galvanic Industry (Electroplating): Used for circulating acids, alkaline cleaning agents, and electrolytic solutions, often requiring non-metallic or corrosion-resistant materials.
Petrochemical Industry: Centrifugal pumps are used for fuels, lubricants, refined oils, and other hydrocarbon-based fluids, often in hazardous or explosive atmospheres, necessitating ATEX-certified designs.	Water Treatment Applications: Applied for water circulation in filtration and sedimentation processes, where pumps must reliably transport fluids with varying levels of purity and suspended solids.

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Key Parameters for Proper Centrifugal Pump Selection

Accurate pump selection depends on several critical parameters. If any of these are missing or incorrectly specified, it can lead to poor performance, premature failure, or unsafe operation.

Duty point (operating point):

Flow rate (Q) and head (H) at which the pump will operate.

Liquid properties:

Viscosity (minimum and maximum)
Density
Temperature (operating range)
Solids content (% by volume or weight)
Maximum solid particle size
Hardness of solids (abrasiveness)

System conditions:

NPSHa (Net Positive Suction Head available)
Suction and discharge pressure
Pipeline layout and elevation differences

Environmental conditions:

Minimum and maximum ambient temperature
Installation environment (indoor, outdoor, corrosive atmosphere, hazardous area, etc.)

Failure to consider or accurately specify any of these factors can result in incorrect pump selection, leading to inefficiency, cavitation, seal failure, or non-compliance with safety or process requirements.

Centrifugal Pumps – Advantages and Disadvantages

Advantages:

High efficiency for low-viscosity liquids:
Centrifugal pumps are highly efficient when pumping low-viscosity fluids such as water, alcohol, and light chemicals.

Ideal for high-capacity applications:
They are well-suited for applications requiring large flow rates at moderate to high heads.

Compact design:
Compared to rotary positive displacement and reciprocating pumps, centrifugal pumps typically have smaller overall dimensions and are easier to install and maintain.

Multistage capability:
Multistage centrifugal pumps are widely used for achieving very high heads (e.g., over 2000 meters) while still handling significant flow rates, making them ideal for high-pressure applications such as boiler feedwater, mine dewatering, and high building water supply.

Limitations:

Not efficient for high-viscosity fluids:
Efficiency drops significantly with increasing fluid viscosity

Limited effectiveness for low-flow or metering applications:
Centrifugal pumps are not ideal for very small capacities or where precise dosing/metering is required. In such cases, positive displacement pumps could be a better choice.

Advantages of Tapflo Pumps Over the Competition

Tapflo centrifugal pumps are designed with a “simplicity-first” philosophy, making them easy to commission, operate, and maintain. The design approach prioritizes functionality, reliability, and cleanability, without unnecessary complexity.

As the founder and visionary of Tapflo Group, Mr. Börje Johansson often emphasizes that “simple is art” and that Tapflo products should be no more complex than necessary to meet the essential requirements for mechanical strength, hygienic design, and operational reliability.

This philosophy translates into several customer benefits:

Reduced maintenance time and costs

User-friendly operation

High reliability with fewer components prone to wear or failure

Easy cleaning and compliance with industry standards

Tapflo design concept ensures optimal performance across a wide range of applications while keeping ownership costs low.

Don’t miss out – watch the other Tapflo videos right now and discover how Tapflo pumps can improve your operations.

Tapflo Centrifugal Pumps – Accessories

Tapflo centrifugal pumps can be equipped with a wide range of accessories to meet diverse process requirements and installation conditions. Available options include:

Hygienic shrouds. Ensure protection and cleanliness, especially in food, beverage, and pharmaceutical applications.
Adjustable feet. Facilitate easy alignment and leveling during installation.
Bracket supports. Provide stable and secure mounting to foundations or base frames.
Built-on frequency inverters (VFDs). Allow precise control of pump speed and flow for improved energy efficiency and process flexibility.
Inducers. Enhance suction performance by reducing NPSHr, ideal for applications with low NPSHa.
Quenching and buffer liquid systems. Ensure reliable mechanical seal operation in harsh or sensitive applications, protecting against dry running, contamination, and leakage.
Custom designs. Special configurations can be developed to meet specific customer requirements or unique application challenges.

Custom-Built Centrifugal Pumps by Tapflo

In addition to its standard industrial pump ranges, Tapflo Group offers custom-built centrifugal pump systems through its dedicated Tapflo Solutions department. This specialized division focuses on the design and delivery of complete turnkey units, tailored to meet specific customer requirements.

Tapflo custom systems can include:

Centrifugal pumps

Piping and pipeline components
(filters, pressure gauges, valves, etc.)

Mixers and agitators

Storage and process tanks

Lifting devices and handling equipment

Automation and control units
(including PLCs, sensors, and control panels)

These systems are developed according to customer specifications and process needs, providing fully integrated and ready-to-install solutions that reduce engineering time, ensure compatibility, and streamline commissioning.

SLES mixing and dilution unit

Certifications

Tapflo hygienic centrifugal pumps are designed in compliance with the strict sanitary standards of 3-A and EHEDG, ensuring suitability for use in food, beverage, and pharmaceutical applications.

Additionally, many Tapflo pump models are ATEX certified, making them suitable for operation in explosion hazardous environments, in accordance with the ATEX Directive 2014/34/EU.

These certifications confirm Tapflo’s commitment to safety, hygiene, and regulatory compliance across a wide range of industrial sectors.

FAQs about centrifugal pumps

What to Consider When Purchasing a Centrifugal Pump

The selection of a centrifugal pump should be based strictly on accurate and complete application and industry-specific data. It is essential that the selection be reviewed and confirmed by experts from the pump manufacturer, especially when the pump plays a critical role in your production process. Choosing a centrifugal pump suitable for the specific fluid properties, operating conditions, and the overall piping system design ensures long-term efficiency and reliability.

For reliable and correct pump selection, it is important to share operational experience with existing pumps used in similar applications. Many pump issues arise not because the pump was selected incorrectly, but because the application data provided during the selection process was inaccurate or incomplete.

In many cases, pumps that function well today had to be upgraded or modified during commissioning or long-term use. Unfortunately, the original application data on which the initial selection was based is often not updated to reflect these changes. This creates a knowledge gap that can lead to recurring issues in future pump selections.

It is important to remember that one of the most valuable assets for a pump end user is the accumulated experience with existing equipment. Leveraging this knowledge and maintaining up-to-date records of changes, performance, and operating conditions — including adjustments made to the piping system — is key to making informed and effective pump purchasing decisions.

How to Properly Operate Centrifugal Pumps and Improve Their Efficiency

For reliable operation, every centrifugal pump should run at or near the duty point or range for which it was selected. To achieve this, operators must monitor and control the suction and discharge conditions, as well as ensure the pump itself is in proper working condition.

Besides having well-trained operators, one of the most critical factors for correct pump operation is the use of proper monitoring and control equipment. An industrial pump without pressure monitoring at both the suction and discharge sides is like a car without a dashboard. Some drivers may believe they can “feel” the speed or engine temperature, but this is widely regarded as poor practice. A similar mistake is often made by industrial pump users who rely on intuition rather than data.

Likewise, operating a centrifugal pump without the ability to adjust discharge pressure is like driving a car without a steering wheel. It might work on a straight path, but the moment conditions change, control is lost. In real-world applications, suction and discharge conditions often fluctuate, so static operation is rarely efficient or sustainable.

To maintain optimal performance and improve efficiency under variable conditions, it is advisable to implement intelligent manual or automated control of pump speed and/or discharge pressure. Variable frequency drives (VFDs) and automation systems are becoming increasingly affordable, especially as energy costs continue to rise. As a result, such systems are quickly becoming the industry standard, and companies should begin preparing for their widespread adoption.

How Do Centrifugal Pumps Handle Abrasive Fluids?

Centrifugal pumps designed to handle abrasive fluid (commonly known as slurry pumps) are specifically engineered to pump liquids containing high concentrations of solid particles, often up to 60% by volume. These pumps are built with robust features to withstand the wear caused by abrasive materials.

Key design considerations include:

Wetted Parts Materials: Slurry pumps are often constructed with extremely hard metal alloys for applications involving solids with moderate hardness. When the solids are too hard for metallic materials (or the suitable metallic materials would be too expensive), easy to replace wear-resistant rubber linings are used instead to provide the necessary solution.

Mechanical Seals: These seals must also be pressurized with clean flushing fluid to prevent abrasive particles from entering and damaging the sealing surfaces. For very high-solids-content slurries, the pumps are typically equipped with mechanical seals that operate under suction-side conditions meaning the seal is located at the pump inlet.

Hydraulic Design: Slurry pumps have larger clearances and specially designed impellers (e.g., half-open or recessed) to minimize clogging and reduce erosion.

Overall, successful pumping of abrasive fluids requires not only the right pump design but also proper seal management, material selection, and flushing arrangements.

How Do Centrifugal Pumps Handle High-Viscosity Fluids?

In theory, there is no upper viscosity limit for fluids that centrifugal pumps can handle. A common industry joke says, “If a centrifugal pump can’t handle a fluid due to its high viscosity, a bigger centrifugal pump can.” While humorous, this reflects a truth: with appropriate scaling and design, centrifugal pumps can indeed be used for high-viscosity applications.

For example, large centrifugal pumps are successfully used to transport crude oil with viscosities up to 5,000 cP. In such cases, centrifugal pumps are often preferred over positive displacement (volumetric) pumps because they offer:

Higher reliability
Lower operational and maintenance costs
More compact designs for large flow rates

Although positive displacement pumps typically provide higher efficiency with viscous fluids, their significantly larger size and cost for high-flow applications make them less attractive in some industries.

However, it’s important to note that centrifugal pumps are typically designed for a maximum viscosity range depending on their intended application. For pumps used in industries such as food, pharmaceuticals, and chemicals, this range usually falls between 150 cSt and 500 cSt. Within this range, centrifugal pumps, especially with low head, can still operate more efficiently and competitively.

Are Centrifugal Pumps Self-Priming?

Most standard centrifugal pumps are not self-priming. They require the pump casing and suction line to be filled with liquid before startup. If operated dry or with air in the system, they will fail to generate suction and can be damaged.

However, there are special centrifugal pump designs that are self-priming. These pumps are capable of evacuating air from the suction line and create vacuum to lift fluid from a level below the pump without external priming assistance. Despite this convenience, self-priming centrifugal pumps are generally less efficient than standard designs due to their more complex internal geometry.

Additionally, self-priming models typically have a higher Net Positive Suction Head required (NPSHr), which limits their ability to handle significant suction lift (negative suction head). Because of these limitations, standard non-self-priming centrifugal pumps are often preferred for applications involving:

High flow rates
Continuous or high energy-consuming operation
Systems with large suction lifts or long suction pipelines

In such cases, a separate priming system is used to fill the suction pipeline and pump casing before startup. These systems operate only during priming and are then stopped and isolated. Common priming solutions include:

Vacuum pump (or small self-priming positive displacement pumps or vacuum ejectors)
Integrated extra piping, valves, automation and control units

This approach combines the efficiency and performance of standard centrifugal pumps with self-priming abilities.

The Most Common Problems Resulting from Improper Use of Centrifugal Pumps and How to Avoid Them?

Improper selection, installation, or operation of centrifugal pumps can lead to numerous performance and reliability issues. Below are some of the most frequent problems, their causes, and how to avoid them:

Common Problems:

Cavitation
Caused by operating the pump at or beyond the end of its performance curve, or due to insufficient NPSHa.
Result: Erosion of internal components, noise, vibration, and reduced efficiency.
Excessive Vibrations
Due to poor or unmaintained alignment between the pump and drive shafts.
Result: Bearing wear, shaft damage, and shortened pump life.
Incorrect Hydraulic Selection
Caused by inaccurate or incomplete application data during pump sizing and selection.
Result: The pump does not meet system demands, leading to poor performance or instability.
Wrong Material Configuration
Occurs when material selection does not match the pumped liquid’s properties (e.g., pH, abrasiveness, temperature).
Result: Corrosion or quick wear of pump components.
Mechanical Seal Failure
Often caused by accidental dry running, or startup with a closed suction valve.
Result: Seal faces overheat and fail, leading to leaks or total breakdown.
Double Mechanical Seal Damage
Caused by lack of quenching or buffer liquid, or incorrect buffer pressure.
Result: Quick seal wear and process fluid leakage.
Incorrect Operation After System Changes
When system modifications (e.g., flow, head, fluid properties) are made without consulting the pump manufacturer.
Result: Operating outside design parameters, risking damage and inefficiency.
Problems from Non-Original Spare Parts
Using non-genuine parts can compromise material quality and dimensional tolerances.
Result: Reduced performance, increased wear, or quick

How to Avoid These Issues:

Proper Training: Ensure that pump operators and maintenance technicians are well trained in both theory and hands-on operation.
Accurate System Monitoring: Use gauges, flow meters, pressure sensors, and control panels to monitor suction and discharge conditions in real time.
Preventive Maintenance: Regularly check alignment, seal condition, and bearing status. Monitor vibrations and noise.
Automated Control Systems: Install VFDs, pressure regulators, and alarms for abnormal operating conditions.
Consult the Pump Manufacturer: Always consult with the pump producer before making system changes or choosing spare parts.
Use Correct Startup Procedures: Always confirm open valves, primed suction lines, and adequate seal support systems before startup.

By implementing these best practices and investing in proper training and system instrumentation, many of the most common centrifugal pump problems can be prevented resulting in longer service life, higher reliability, and lower operating costs.

More information about Tapflo centrifugal pumps: worldpumps.com

We provide a wide selection of equipment used across all industry sectors, both in small and large enterprises. We offer professional devices for applications in:

hygienic sectors (beverages, confectionery, pharmaceuticals and cosmetics, fish processing, dairy, brewing, oils, fats, processed foods, and others),
industrial sectors (wastewater treatment plants, paper industry, surface treatment, chemical processes, mechanical industry, paint and coatings industry, leather tanning).

The bitumen industry focuses on the production, processing, and application of bitumen – including the manufacture of asphalt emulsions, modified bitumens, waterproofing masses, and more. Due to the nature of the material, the bitumen industry requires advanced technologies and specialized equipment to handle substances with high viscosity and extreme temperatures.

We offer a wide range of equipment, such as pumps and mixers, that enhance the efficiency and quality of production processes in the bitumen industry. By applying modern Tapflo solutions, it is possible to achieve bitumen products of the highest quality that meet the strict market requirements. By choosing our solutions, you can significantly increase the efficiency and safety of processes in your production facility.

The chemical industry is a very large and important sector of the economy, encompassing all types of enterprises that manufacture their products using chemicals.

At Tapflo, we provide modern industrial solutions that streamline manufacturing processes and improve chemical production efficiency. We understand that handling chemicals requires the use of the highest quality equipment, and that is exactly what we deliver. Our motorers ensure the selection of devices suitable for every type of chemical, including pumps, valves, mixers, and filters tailored to the specific medium. The highest quality of Tapflo equipment guarantees safety, accuracy, and optimization of production costs.

The household chemical manufacturing industry must continuously evolve to meet market demands and environmental standards by implementing modern technologies. The production process in the chemical industry, including cleaning agents, detergents, bleaches, and other products, is complex. Every manufacturer must use precise machinery to ensure quality, safety, and the highest efficiency of their installations.

We offer a range of equipment adapted to the challenging conditions of chemical production. Using Tapflo machines ensures efficient, safe, and environmentally friendly manufacturing.

We provide a wide range of equipment used across all industry sectors, both in small and large enterprises. We offer professional devices for applications in:

hygienic industries (beverages, confectionery, pharmaceuticals and cosmetics, fish processing, dairy, brewing, oils, fats, processed food, and others),
industrial sectors (wastewater treatment plants, paper industry, surface treatment, chemical processes, mechanical industry, paint and coatings industry, tanning).

The electroplating industry plays a key role in the production of various metal components. Electroplating processes require the use of equipment designed to operate in aggressive environments – with chemicals, acids, or alkalis.

Our offer includes electroplating pumps, valves, filters, and mixers, whose design and reliability enable the production of the highest quality metal coatings. We provide equipment used in industries such as metallurgy, electroplating, and paint finishing.

The cosmetics industry is a dynamically growing sector where production quality and efficiency are of paramount importance. Achieving these goals requires modern and reliable equipment such as pumps, mixers, valves, and homogenizers.

Thanks to the variety of available products, Tapflo can tailor flow solutions to the specific needs of customers in the cosmetics industry. Our technologically advanced machines play a fundamental role in production processes, ensuring high quality of cosmetic products. We guarantee precision, efficiency, and safety, which translate into superior product quality and consumer satisfaction.

We provide a wide range of equipment used across all branches of industry, both in small and large enterprises. We offer professional devices for applications in:

hygienic sectors (beverages, confectionery, pharmaceuticals and cosmetics, fish processing, dairy, brewing, oils, fats, processed food, and others),
industrial sectors (wastewater treatment plants, paper industry, surface treatment, chemical processes, mechanical industry, paint and coatings industry, tanning industry).

We provide a wide selection of equipment used across all branches of industry, both in small and large enterprises. We offer professional devices for applications in:

hygienic sectors (beverages, confectionery, pharmaceuticals and cosmetics, fish processing, dairy, brewing, oils, fats, processed foods, and others),
industrial sectors (wastewater treatment plants, paper industry, surface treatment, chemical processes, mechanical industry, paint and coatings industry, tanning industry).

Pumps and equipment for food production play a key role in ensuring efficiency, hygiene, and safety of manufacturing processes.

Investing in high-quality equipment pays off by improving product quality, increasing productivity, and reducing operational costs. By choosing the right food-grade pumps, mixers, or homogenizers from Tapflo, food industry companies can meet market challenges and deliver products of the highest quality to consumers. Every Tapflo device is characterized by compliance with strict sanitary standards such as EHEDG, 3-A, FDA, and USP VI.

We offer a wide range of equipment used across all industry sectors, both in small and large enterprises. We provide professional devices for applications in:

hygienic sectors (beverages, confectionery, pharmaceuticals and cosmetics, fish processing, dairy, brewing, oils, fats, processed food, and others),
industrial sectors (wastewater treatment plants, paper industry, surface treatment, chemical processes, mechanical industry, paint and varnish industry, tanning).

Industry Sector

We present to you the full range of products we supply. The proposals found here are addressed to users of various types of industrial applications in India. We offer comprehensive, professional and, above all, reliable diaphragm pumps, centrifugal pumps, peristaltic pumps, pulsation dampers, electrically operated diaphragm pumps, filter press pumps, submersible pumps, industrial mixers, filter units, hygienic valves, and other equipment to the Indian Industry to ensure the safe and trouble-free transportation of liquids. Our over forty years of experience and qualified staff of top specialists ensure that the industrial equipment we supply successfully meets the expectations of even the most demanding applications in the Indian Industry.

One of the most universal pumps available on the market, compressed air-operated diaphragm pumps can be used in a wide range of applications to transfer almost any medium. Their simple operating principle and robust, compact design enable these pumps to meet the high demands of various industries.

Trouble-free dry running. Smooth flow control. Self-priming up to 5 m.
No electrical installation required. Few components. Compact and robust design. Oil-free air distributor.
Compressed air supply.

Due to changes in the way we think about our impact on the environment, we are proud to present EODD – Electric Diaphragm Pumps. The product follows a modern approach but is still based on the original diaphragm pump technology, which has proven to be very effective. We consulted with our customers, who expressed a need for the features and benefits of a traditional diaphragm pump, but with the added advantage of lower operating costs. The pump is powered by a high-efficiency electric motor (IE3 class) and there is no chance of hydraulic fluid leakage, as the pump simply does not need it.

A Filter Press Pump is a specialized type of pump designed to fill a filter press with a slurry or suspension from an external storage or disposal facility, typically used in solid-liquid separation processes, typically at high pressures reaching 24 bar.

Tapflo Filter Press Pumps are known for their robust construction, reliable performance, and ability to handle high-pressure applications with ease. They are equipped with a non-return valve to prevent backflow and are available in various materials to suit different process requirements. Air operated filter press pumps have the unique feature that when the filter press is full, they stop and no additional safety systems are required to shut down the pump (like in case of electrically operated filter press pumps).

Tapflo offers a wide range of centrifugal pumps made of stainless steel and PP and PVDF plastics, including horizontal or vertical pumps, as well as magnetically driven pumps. Available in hygienic and industrial designs, Tapflo centrifugal pumps are among the most versatile pumps currently available on the market. Selected pumps can be designed for safe contact with food and are also available in ATEX explosion-proof versions.

Hose pump is a type of positive displacement pump that can be used to pump a wide variety of liquids. Tapflo industrial hose pumps use the principle of peristalsis, whereby the deformation and compression of a soft elastomer hose allows the liquid to pass through the device.

Pumps of this type are the best solution for delicate, corrosive, abrasive or dry media, including those containing solid particles. The special design, in which only the hose comes into contact with the pumped product, reduces operating costs by reducing wear on internal components and allows operation in very demanding conditions.

The SOMA SINUSOIDAL Positive Displacement Pump works according the Sinusoidal PUMP principle, which was developed by Manfred Sommer in 1982. The Sinusoidal curve shaped rotor is fitted on a pump shaft. Due to the design, four chambers are created in which the product will be transferred very gently – without any shear or damage to the product.
A scraper divides the suction and the pressure side. The rotor does not run against the housing or the cover. That means, that the housing and the cover will never wear out. SOMA offers an unlimited guarantee for the cover and the housing.

IBC containers and drums are widely used in industry – they are the simplest way to store and transport various liquids. Since many of these liquids must be mixed before use in the process, we offer a range of dedicated industrial mixers. These are simple, yet robust and safe to operate, high-quality devices. Designed and configured for common industrial applications, they enable mixing directly in the IBC container or drum. Thanks to the use of mixers, intermediate tanks can be omitted and the process becomes faster and more economical.

Our offer is complemented by pump units, industrial trucks, acoustic and thermal shields, and SKID technological systems. Bearing in mind the diverse needs of our customers, we offer not only a standard range of products, but also customised solutions tailored to your requirements. Our range includes pump units of various power ratings and sizes. We are able to supply motors and gear motors for every standard pump available in our offer. If you cannot find a solution that meets your expectations in our offer, we will be happy to design and implement a customised solution.

Pumps

Other Equipment

We specialize in designing unconventional solutions tailored to the most demanding needs of our clients. We do this by introducing additional functionalities to the offered devices, increasing their mobility, adjusting their dimensions or introducing advanced safety and control systems. We offer all solutions that increase the comfort and safety of work, such as stationary and mobile systems for unloading media from tanks, barrels, IBC containers, etc.

Our mission is to provide technical solutions that guarantee proper functionality and stable operation in any environment.

Unloading drums filled with highly viscous liquids has never been easier. Our High Viscosity System (HVS) is designed to simplify this task, offering automated efficiency and exceptional product-saving capabilities. With HVS, you’ll experience a smooth unloading process, allowing you to focus on other critical tasks while achieving up to a 99% product removal rate. Say hello to effortless drum unloading with HVS.

Simplify the unloading of highly viscous liquids with our High Viscosity System Quattro-type (HVS Quattro). It is designed for high-volume applications where multiple drums (typically four) are stored on pallets. The HVS Quattro allows you to switch between the drums easily, thanks to our revolutionary articulated arm. Experience an impressive product removal rate of up to 99% which will reduce your production costs.

Unloading drums containing highly viscous liquids has become more efficient and precise with our High Viscosity System Flexi-type (HVS Flexi). This system simplifies the task, providing automation and effective product-saving features. The HVS Flexi ensures a smooth unloading experience, allowing you to concentrate on other important tasks while achieving an impressive product removal rate of up to 99%. It is suitable for applications with low to moderate volumes, such as supplying filling or packing lines directly.

Experience efficient and safe tank emptying operations with our flexible Unloading System. Designed to handle IBCs (Intermediate Bulk Containers), Mauser, Goodpack or Bag-in-Box® containers, totes, drums, barrels, and various other storage vessels, this system efficiently manages both low and high-viscosity products across a wide range of industries. Using a reliable suction lance mechanism, its innovative design and customizable control system ensure optimal performance while maintaining the highest industrial safety standards.

SLES* is an organic chemical compound with excellent cleaning and foaming properties. For this reason, it is commonly used in the production of cleaning agents, soaps, shampoos, and household chemicals. SLES is typically supplied to manufacturers of these liquids at a 70% concentration, and due to its physical properties, such a concentrated solution is difficult to process and must be diluted below 27% before being used in the production line. Our system enables continuous dilution with maximum efficiency and safety, reducing costs for the company in the long term.

Achieving precise mixing of ingredients to obtain the desired final product—while maintaining strict proportions, accuracy, and sequence—poses a major challenge for industrial manufacturers. The mixer was created specifically for this purpose. It is based on a system for diluting concentrated ingredients such as SLES. However, it has been designed in a modular way, allowing us to easily configure the system to meet actual production needs. The ingredients of the final product can be drawn from various types of tanks.

Precise and repeatable filling operations with our versatile container filler. Designed for applications requiring high accuracy and compatibility with various containers and products, from small-volume containers to large industrial drums. Filling accuracy below 0.1% ensures optimal production line performance while maintaining the highest industrial and sanitary standards. Suitable for both high- and low-viscosity products.

Responding to the individual needs of users, Tapflo offers the delivery of compact, automated process systems on a “turnkey” basis. Every demand for a non-standard pumping system is an opportunity for us to create a unique, tailor-made SKID system. Thanks to our extensive design and manufacturing capabilities, we provide solutions developed with specific functionality in mind. We offer virtually unlimited possibilities for the development of pumping units, both in terms of mechanics and automation.

Tapflo presents a series of chemical unloading systems designed for every branch of industry where liquids need to be stored, transferred, and dosed. Our solution, based on the use of a diaphragm pump, is suitable for handling viscous liquids, chemically aggressive substances, as well as those containing solid particles.

Several tank sizes can be combined with pumps in various configurations. Additional options allow the system to be tailored to specific needs. In this way, we have created the simplest and most versatile pumping solutions on the market.

saThe use of protection systems ensures not only efficient but also safe operation of diaphragm, lobe, gear, screw, and centrifugal pumps. Protection systems detect hazardous situations and respond immediately, for example by automatically shutting down the device. The pump protection solutions offered by Tapflo operate based on dedicated sensors. These include media presence sensors such as optical indicators, as well as tuning fork and capacitive sensors designed to detect the presence of a medium or to monitor its level in tanks or pipelines.

Tapflo presents a series of hygienic covers designed specifically for diaphragm pump users. The stainless steel housing is durable and sealed, effectively isolating the pump from its surroundings. Filled with a dedicated insulation mat, the hygienic covers are an ideal solution for acoustic or thermal separation of the pump. Tapflo industrial covers combine user-friendly design with high-quality materials. Built to last, they will serve reliably for years in nearly any application.

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