Salvatore Robuschi RB pumps are centrifugal pumps with a multi-channel impeller. They are characterized by low operating costs, a wide selection of sealing systems, the ability to pump under low NPSHa conditions, and an impeller with large free passage for solids and high abrasion resistance. All pumps in this series have one sealing housing for all types of seals (single, tandem, cartridge, “back to back” or packing, according to API 682) and bearings designed according to ISO 5199.
Salvatore Robuschi RB pumps can pump liquids with high density, viscosity, also with gas, air and solids content. They maintain high efficiency and low noise levels. They can be used in general industry, food, chemical, refinery, paper, sugar, metallurgical and other industries.
FAST FACTS
Max. capacity: 3200 m3/h
Max. lifting height: 140 meters
Max. temperature: 220 °C
Pump materialss: 316 stainless steel, gray cast iron
Certifications: ATEX
FEATURES AND BENEFITS
High hydraulic efficiency, low NPSH
Multi-channel impeller – pumping liquids with solids
Transfer of hot, dense, and viscous media
Flexibility – one cover, 15 different seals
Modularity and easy maintenance
Available in monoblock, flange-mounted or shaft-extended versions.
Salvatore Robuschi RB pumps are centrifugal pumps with a multi-channel impeller. They are characterized by low operating costs, a wide selection of sealing systems, the ability to pump under low NPSHa conditions, and an impeller with large free passage for solids and high abrasion resistance. All pumps in this series have one sealing housing for all types of seals (single, tandem, cartridge, “back to back” or packing, according to API 682) and bearings designed according to ISO 5199.
Salvatore Robuschi RB pumps can pump liquids with high density, viscosity, also with gas, air and solids content. They maintain high efficiency and low noise levels. They can be used in general industry, food, chemical, refinery, paper, sugar, metallurgical and other industries.
RB series pumps are centrifugal process pumps with a multi-channel impeller with a special blade geometry to achieve low NPSH values and a large spherical passage area. This series of pumps is characterized by a modular design, interchangeable parts, a wide selection of sealing systems, the ability to pump under low NPSH conditions, and an impeller with a large free passage for solids and high abrasion resistance.
The RB series centrifugal pumps have a modular design that allows reducing spare parts and storage costs. Wszystkie serie wirowe Salvatore Robuschi posiadają jeden korpus uszczelnienia dla wszystkich typów uszczelnień – mogą być wyposażone w uszczelnienie single, tandem, cartridge, “back to back” or packed. Uszczelnienia mogą zostać wyposażone w PLAN zgodnie z API 682 (np. PLAN 11, PLAN 52, PLAN 53, PLAN 54).
Passage of solid parts, transfer of high viscosity media with low NPSH, high efficiency and low noise – these are the main features of the RB multi-channel impellers, which allow these pumps to achieve high performance even in critical conditions. The large suction inlet and the small number of blades reduce the inlet speed and ensure very good suction characteristics even in the presence of gas or air dissolved in the pumped liquid. The large width of the impeller and the shape of the blades reduce the speed of passage of the medium through the inside of the pump and improve efficiency when used with viscous liquids. The multi-channel impeller also allows the transfer of solid parts (non-fibrous) without clogging the pump and ensures high efficiency, similar to a closed impeller, and also higher in the case of high viscosity liquids. It is used in many different applications and is suitable for various installations.
Modularity and easy maintenance – 4 groups of bearing housings and shafts covering 15 different pump sizes. Oversized bases ensure high stability, and the flanged design avoids problems related to pump and motor misalignment.
Unified bearing housing – The same bearing housing can be used for pumps with closed, open, channel and vortex impellers. Design compliant with EN 5199, ensuring shaft deflection < 0.05 mm and min. 18,000 hours of bearing operation, also designed to balance axial and radial loads, and reduce operating temperature.
Performance – multi-channel impellers made with the lost wax method for high hydraulic efficiencies and low NPSH values.
Multi-channel impeller – the flow velocities at the inlet and outlet of a multi-channel impeller are very low compared to a traditional impeller, and the efficiency is close to that of closed impellers. Low speed also means low friction losses both on the suction side and when the liquid cuts through the blades, low NPSH and higher efficiency when pumping viscous liquids. Multi-channel impellers are also suitable for pumping liquids containing solids, contaminated liquids, purees, concentrates, etc. Thanks to these features, these pumps can be used in many different applications and are suitable for many different installations.
Flexibility – 12 different sealing systems can be installed in one body cover.
Wide range of applications – designed for the chemical, steel, petrochemical, food, sugar, and seawater desalination industries, as well as for hot water distribution and power plants.
The two main parts of a centrifugal pump are the impeller with blades (impeller) and the pump housing (casing). In the most common type – the centrifugal pump with a volute casing – the liquid enters the pump near the center of the high-speed rotating impeller. The liquid on the suction side moves along the axis of the impeller and due to the centrifugal force generated by the blades, it is thrown radially into the chamber in the casing. The casing gradually expands in a spiral manner towards the discharge nozzle, which reduces the velocity of the liquid and thus increases the pressure (diffuser effect). At the same time, as the liquid is thrown radially by the impeller due to centrifugal force, the pressure in the center of the impeller drops, enhancing the effect of drawing liquid into the pump, which enables a continuous liquid transfer process.
The impeller of a centrifugal pump is driven by a motor (most often electric) via a shaft. The pump head, along with the coupling and motor, constitutes the pump unit. In centrifugal pumps, gears are not used, and the rotational speed of the motor is transmitted directly. Most commonly, two- and four-pole motors are used (rotational speeds of approximately 2900 and 1450 rpm, respectively), and less frequently, six- and eight-pole motors are used (approximately 900 and 700 rpm).
A very important element of the pump is the seal at the point where the drive shaft enters the body. This seal is designed to prevent the pumped liquid from leaking out of the pump, maintain pressure inside the pump, and prevent air from entering the pump. Among the seals for centrifugal pumps, we can distinguish gland packing packings, single mechanical seals, and double mechanical seals. We also distinguish a special type of pump – sealless (hermetic) pumps.
1. Reinforced bearing (ISO5199)
The bearing housing is standardized according to EN ISO 5199 and guarantees a shaft deflection of < 0.05 mm and at least 18,000 hours of operation. It is designed to optimize axial and radial pressures and lower operating temperature. All bearing housings are adapted for the use of a reinforced “HD” bearing, which can operate for up to 100,000 operating hours. The “HD” bearing is a combination of an angular contact bearing and a cylindrical roller bearing.
2. One casing, 12 sealing systems
For each pump size, a unique casing can accommodate any type, brand and sealing choice. The dimensions of the sealing chamber have been designed to guarantee effective and correct liquid circulation. By changing a few components, the sealing arrangement can be easily modified, making the pump ready for new plant or process requirements and reducing spare parts inventory.
3. One Casing, Two Impellers
Each pump size can utilize a unique casing that applies to both closed (fitted with a wear ring) and open (with replaceable wear plate) impellers. This versatility allows for easy application of the pump in new installations and processes.
4. Wear ring
The pump is equipped with a replaceable wear ring.
Monoblock version with standard B5 electric motor.
Version with independent support with bearings in oil bath and mounting flange for coupling with flanged motor. This version is available for motor sizes up to IEC 160.
Shaft version: pump with independent oil or grease lubricated bearings, coupling (short or spacer), base and motor.
A cylindrical chamber built according to EN-12756 can be equipped with any type of mechanical seal.
Single mechanical seal
The most popular mechanical seals for use with non-contaminated liquids (no solids). The pumped liquid lubricates the sealing surface and dissipates heat.
Double back-to-back seal
A back-to-back double seal is a solution with a pressurized chamber. The external barrier fluid, supplied at a pressure approximately 0.5 – 1 bar higher than the pressure of the pumped medium, separates the product from the atmosphere.
Double tandem mechanical seal
This type of seal has two pairs of face seals facing in the same direction. The use of this seal allows for a gradual reduction of pressure from the pump chamber or the use of a flushing medium and monitoring of the main mechanical seal of the product. The external service liquid reservoir serves to separate the pumped product from the atmosphere.
Cartridge seal
A cartridge seal resembles a standard seal, but the stationary part of the cartridge seal is built into the housing, and the rotating part is mounted in a sleeve sealed with an O-ring. The cartridge seal housing is a mounting element in the pump, which eliminates the need to install a seal cover.
packing seal
Packing seal is a special cord wound around the shaft separating the space between the pump body and the drive. It does not provide 100% tightness due to the need for continuous lubrication and cooling of the cords.
For thickening/evaporation plants, viscous and waste liquids, circulation, critical suction applications, biodiesel and bioethanol production plants.
Textile and tanning industry
For chemical baths with suspensions and stringy liquids.
RB series pumps are centrifugal process pumps with a multi-channel impeller with a special blade geometry to achieve low NPSH values and a large spherical passage area. This series of pumps is characterized by a modular design, interchangeable parts, a wide selection of sealing systems, the ability to pump under low NPSH conditions, and an impeller with a large free passage for solids and high abrasion resistance.
The RB series centrifugal pumps have a modular design that allows reducing spare parts and storage costs. Wszystkie serie wirowe Salvatore Robuschi posiadają jeden korpus uszczelnienia dla wszystkich typów uszczelnień – mogą być wyposażone w uszczelnienie single, tandem, cartridge, “back to back” or packed. Uszczelnienia mogą zostać wyposażone w PLAN zgodnie z API 682 (np. PLAN 11, PLAN 52, PLAN 53, PLAN 54).
Passage of solid parts, transfer of high viscosity media with low NPSH, high efficiency and low noise – these are the main features of the RB multi-channel impellers, which allow these pumps to achieve high performance even in critical conditions. The large suction inlet and the small number of blades reduce the inlet speed and ensure very good suction characteristics even in the presence of gas or air dissolved in the pumped liquid. The large width of the impeller and the shape of the blades reduce the speed of passage of the medium through the inside of the pump and improve efficiency when used with viscous liquids. The multi-channel impeller also allows the transfer of solid parts (non-fibrous) without clogging the pump and ensures high efficiency, similar to a closed impeller, and also higher in the case of high viscosity liquids. It is used in many different applications and is suitable for various installations.
Modularity and easy maintenance – 4 groups of bearing housings and shafts covering 15 different pump sizes. Oversized bases ensure high stability, and the flanged design avoids problems related to pump and motor misalignment.
Unified bearing housing – The same bearing housing can be used for pumps with closed, open, channel and vortex impellers. Design compliant with EN 5199, ensuring shaft deflection < 0.05 mm and min. 18,000 hours of bearing operation, also designed to balance axial and radial loads, and reduce operating temperature.
Performance – multi-channel impellers made with the lost wax method for high hydraulic efficiencies and low NPSH values.
Multi-channel impeller – the flow velocities at the inlet and outlet of a multi-channel impeller are very low compared to a traditional impeller, and the efficiency is close to that of closed impellers. Low speed also means low friction losses both on the suction side and when the liquid cuts through the blades, low NPSH and higher efficiency when pumping viscous liquids. Multi-channel impellers are also suitable for pumping liquids containing solids, contaminated liquids, purees, concentrates, etc. Thanks to these features, these pumps can be used in many different applications and are suitable for many different installations.
Flexibility – 12 different sealing systems can be installed in one body cover.
Wide range of applications – designed for the chemical, steel, petrochemical, food, sugar, and seawater desalination industries, as well as for hot water distribution and power plants.
The two main parts of a centrifugal pump are the impeller with blades (impeller) and the pump housing (casing). In the most common type – the centrifugal pump with a volute casing – the liquid enters the pump near the center of the high-speed rotating impeller. The liquid on the suction side moves along the axis of the impeller and due to the centrifugal force generated by the blades, it is thrown radially into the chamber in the casing. The casing gradually expands in a spiral manner towards the discharge nozzle, which reduces the velocity of the liquid and thus increases the pressure (diffuser effect). At the same time, as the liquid is thrown radially by the impeller due to centrifugal force, the pressure in the center of the impeller drops, enhancing the effect of drawing liquid into the pump, which enables a continuous liquid transfer process.
The impeller of a centrifugal pump is driven by a motor (most often electric) via a shaft. The pump head, along with the coupling and motor, constitutes the pump unit. In centrifugal pumps, gears are not used, and the rotational speed of the motor is transmitted directly. Most commonly, two- and four-pole motors are used (rotational speeds of approximately 2900 and 1450 rpm, respectively), and less frequently, six- and eight-pole motors are used (approximately 900 and 700 rpm).
A very important element of the pump is the seal at the point where the drive shaft enters the body. This seal is designed to prevent the pumped liquid from leaking out of the pump, maintain pressure inside the pump, and prevent air from entering the pump. Among the seals for centrifugal pumps, we can distinguish gland packing packings, single mechanical seals, and double mechanical seals. We also distinguish a special type of pump – sealless (hermetic) pumps.
1. Reinforced bearing (ISO5199)
The bearing housing is standardized according to EN ISO 5199 and guarantees a shaft deflection of < 0.05 mm and at least 18,000 hours of operation. It is designed to optimize axial and radial pressures and lower operating temperature. All bearing housings are adapted for the use of a reinforced “HD” bearing, which can operate for up to 100,000 operating hours. The “HD” bearing is a combination of an angular contact bearing and a cylindrical roller bearing.
2. One casing, 12 sealing systems
For each pump size, a unique casing can accommodate any type, brand and sealing choice. The dimensions of the sealing chamber have been designed to guarantee effective and correct liquid circulation. By changing a few components, the sealing arrangement can be easily modified, making the pump ready for new plant or process requirements and reducing spare parts inventory.
3. One Casing, Two Impellers
Each pump size can utilize a unique casing that applies to both closed (fitted with a wear ring) and open (with replaceable wear plate) impellers. This versatility allows for easy application of the pump in new installations and processes.
4. Wear ring
The pump is equipped with a replaceable wear ring.
RBM
RBL
RBB
Monoblock version with standard B5 electric motor.
Version with independent support with bearings in oil bath and mounting flange for coupling with flanged motor. This version is available for motor sizes up to IEC 160.
Shaft version: pump with independent oil or grease lubricated bearings, coupling (short or spacer), base and motor.
RBV
RBC
Vertical version with intermediate sleeves.
Cantilever vertical type.
A cylindrical chamber built according to EN-12756 can be equipped with any type of mechanical seal.
Single mechanical seal
The most popular mechanical seals for use with non-contaminated liquids (no solids). The pumped liquid lubricates the sealing surface and dissipates heat.
Double back-to-back seal
A back-to-back double seal is a solution with a pressurized chamber. The external barrier fluid, supplied at a pressure approximately 0.5 – 1 bar higher than the pressure of the pumped medium, separates the product from the atmosphere.
Double tandem mechanical seal
This type of seal has two pairs of face seals facing in the same direction. The use of this seal allows for a gradual reduction of pressure from the pump chamber or the use of a flushing medium and monitoring of the main mechanical seal of the product. The external service liquid reservoir serves to separate the pumped product from the atmosphere.
Cartridge seal
A cartridge seal resembles a standard seal, but the stationary part of the cartridge seal is built into the housing, and the rotating part is mounted in a sleeve sealed with an O-ring. The cartridge seal housing is a mounting element in the pump, which eliminates the need to install a seal cover.
packing seal
Packing seal is a special cord wound around the shaft separating the space between the pump body and the drive. It does not provide 100% tightness due to the need for continuous lubrication and cooling of the cords.
Performance curves
Video
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A wide selection of material designs, seal types (packing, mechanical, or lip seals), and additional options such as
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Doseuro pumps are distinguished by high reliability achieved through continuous product development, updating production techniques, quality control and rigorous testing at all stages of production. Each metering pump model has been carefully designed, built and tested to ensure long life and usability.
The history of CDR dates back to the pre-World War II era. In the early 1950s, Ferdinando Abordi acquired “ARI Pompe” – a family business whose production was based on cast iron pumps for domestic, agricultural and industrial use. In the mid-1960s, the evolving market demanded a new and sophisticated product, and CDR transformed to fulfill special customer orders. The production of stainless steel and special alloy pumps was started. Subsequently, the production of horizontal and vertical centrifugal pumps, compliant with DIN 24256 standards for the chemical industry, was implemented.
Jessberger is a family-owned company based in Ottobrunn near Munich. The company specializes in the production of electric and pneumatic drum and container pumps, vertical and horizontal screw pumps, dosing pumps for high-viscosity media, hand pumps and a wide range of accessories such as flow meters, nozzles, etc. Jessberger’s unparalleled reputation in the field of drum pumps is the result of personalized and professional support and maximum flexibility in all areas and direct contact with customers. Jessberger attaches the greatest importance to strict quality control.
Nova Rotors is an Italian manufacturer specializing in progressive cavity pumps, twin-screw pumps, and centrifugal pumps. Founded in 1990, the company has built a strong reputation for innovation, reliability, and customization, offering solutions for industries such as wastewater treatment, food & beverage, chemicals, and pharmaceuticals. With a focus on efficiency, durability, and hygienic design, Nova Rotors pumps are trusted worldwide for handling a wide variety of fluids — from low-viscosity liquids to highly viscous and abrasive products.
EMEC is an Italian manufacturer of dosing and control systems, specializing in high-quality solenoid and motor-driven dosing pumps, controllers, and accessories for water treatment and industrial applications. Founded in 1982, EMEC has become a trusted global supplier known for precision, reliability, and innovation in chemical dosing technologies. With a strong focus on research and development, EMEC provides tailored solutions for sectors such as water treatment, swimming pools, agriculture, and industrial processes.
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 offers custom-designed solutions tailored to non-standard requirements within industrial manufacturing processes.
Combining various flow components into a single comprehensive unit allows us to meet the individual needs of customers related to: required equipment and functionality, available space, the positioning of connection flanges, and mobility.
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.
Dosing with a diaphragm pump has never been so easy and precise. The Electronic Dosing System is a control unit designed for pumping applications. When combined with a Tapflo diaphragm pump, it allows for the dosing of nearly any liquid. By counting and summing the pump strokes, we can achieve doses with an accuracy of up to 60 ml (for the TR20\* pump size).
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.
The two main parts of a centrifugal pump are the impeller with blades (impeller) and the pump housing (casing). In the most common type – the centrifugal pump with a volute casing – the liquid enters the pump near the center of the high-speed rotating impeller. The liquid on the suction side moves along the axis of the impeller and due to the centrifugal force generated by the blades, it is thrown radially into the chamber in the casing. The casing gradually expands in a spiral manner towards the discharge nozzle, which reduces the velocity of the liquid and thus increases the pressure (diffuser effect). At the same time, as the liquid is thrown radially by the impeller due to centrifugal force, the pressure in the center of the impeller drops, enhancing the effect of drawing liquid into the pump, which enables a continuous liquid transfer process.
