Salvatore Robuschi RG series pumps are process centrifugal pumps with an open impeller, with a modular design, high interchangeability of parts, a wide selection of sealing systems and the ability to pump under low NPSHa conditions. They are designed in accordance with ISO 2858/5199 standards. Models in this series have a single sealing body for all types of seals (single, tandem, cartridge, “back to back” or packing, also PLAN according to API 682).
They can be used for non-abrasive, slightly contaminated liquids, liquids with a gas content of up to 15%. Used in the chemical, petrochemical, food, and sugar industries, in seawater desalination plants, absorption devices in environmental motorering, power plants, the steel industry, and hot water distribution.
Salvatore Robuschi RG series pumps are process centrifugal pumps with an open impeller, with a modular design, high interchangeability of parts, a wide selection of sealing systems and the ability to pump under low NPSHa conditions. They are designed in accordance with ISO 2858/5199 standards. Models in this series have a single sealing body for all types of seals (single, tandem, cartridge, “back to back” or packing, also PLAN according to API 682).
They can be used for non-abrasive, slightly contaminated liquids, liquids with a gas content of up to 15%. Used in the chemical, petrochemical, food, and sugar industries, in seawater desalination plants, absorption devices in environmental motorering, power plants, the steel industry, and hot water distribution.
Circulation transfer in evaporation plants, pumping of press water in fish processing, ethyl alcohol, wine with grape residues.
Wastewater treatment
Pumping water with 10% air content, sewage, sludge, transfer in flotation recirculation.
Chemical industry
Transfer of nitric acid, 98% sulfuric acid or 12.5% iron sulfate with suspended particles, pumping glycerin and sodium hydroxide, fatty acid, salt water.
The RG series centrifugal pumps are designed with a modular construction in mind in order to reducing spare parts and storage costs. Many devices use common spare parts. These pumps are designed in accordance with ISO 2858/5199 standards, making them interchangeable with other machines manufactured to these standards. In addition, all Salvatore Robuschi centrifugal series have one seal housing for all seal types. When replacing a few elements, the pumps can be equipped with single, tandem, cartridge, “back to back” or packing seal. The seals can be equipped with a PLAN according to API 682 (e.g. PLAN 11, PLAN 52, PLAN 53, PLAN 54).
Modularity – 3 groups of bearing housings and shafts covering 35 different pump sizes. The replaceable wear plate ensures a long pump life and reduces maintenance costs. In addition, the bearing housing allows adjustment of the axial clearance on the drive side. Oversized bases provide high stability, and the mounting flange design avoids problems associated with 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 25199, ensuring shaft deflection < 0.05 mm and min. 18,000 hours of operation, also designed to balance axial and radial loads, and reduce operating temperature.
Performance – impellers made of micro-cast by the lost wax method for high hydraulic efficiencies and low NPSH values.
Flexibility – 15 different sealing systems can be installed in one body cover.
Wide range of applications – designed for the chemical, steel, petrochemical, food, sugar, seawater desalination plants, 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 – EN25199)
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 drastically reduce operating temperature. All bearing housings are suitable for the reinforced “HD” version, which is equipped with angular contact bearings and roller bearings. This series also includes a stronger bearing housing that can operate for up to 100,000 working hours.
2. One casing, 12 sealing systems
For each pump size, a unique casing can accommodate any type, brand and sealing choice. The sealing chamber dimensions 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 use a unique casing that applies to both closed (fitted with a wear ring) and open (with a replaceable wear plate) impellers. This versatility allows the pump to be easily used in new installations and processes.
4. Wear plate and adjustment
The replaceable wear plate guarantees a long pump life and reduces maintenance costs. In addition, the bearing housing is equipped with an axial clearance adjustment that is easily accessible from the drive side.
Monoblock version with standard B5 electric motor.
RGL
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.
RGB
Shaft version: pump with independent bearings lubricated with oil or grease, 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.
AISI 316
Optionally: AISI 304, AISI 904, Duplex, Superduplex, Hastelloy B or C)
Industry
Application example
Food industry
Circulation transfer in evaporation plants, pumping of press water in fish processing, ethyl alcohol, wine with grape residues.
Wastewater treatment
Pumping water with 10% air content, sewage, sludge, transfer in flotation recirculation.
Chemical industry
Transfer of nitric acid, 98% sulfuric acid or 12.5% iron sulfate with suspended particles, pumping glycerin and sodium hydroxide, fatty acid, salt water.
The RG series centrifugal pumps are designed with a modular construction in mind in order to reducing spare parts and storage costs. Many devices use common spare parts. These pumps are designed in accordance with ISO 2858/5199 standards, making them interchangeable with other machines manufactured to these standards. In addition, all Salvatore Robuschi centrifugal series have one seal housing for all seal types. When replacing a few elements, the pumps can be equipped with single, tandem, cartridge, “back to back” or packing seal. The seals can be equipped with a PLAN according to API 682 (e.g. PLAN 11, PLAN 52, PLAN 53, PLAN 54).
Modularity – 3 groups of bearing housings and shafts covering 35 different pump sizes. The replaceable wear plate ensures a long pump life and reduces maintenance costs. In addition, the bearing housing allows adjustment of the axial clearance on the drive side. Oversized bases provide high stability, and the mounting flange design avoids problems associated with 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 25199, ensuring shaft deflection < 0.05 mm and min. 18,000 hours of operation, also designed to balance axial and radial loads, and reduce operating temperature.
Performance – impellers made of micro-cast by the lost wax method for high hydraulic efficiencies and low NPSH values.
Flexibility – 15 different sealing systems can be installed in one body cover.
Wide range of applications – designed for the chemical, steel, petrochemical, food, sugar, seawater desalination plants, 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 – EN25199)
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 drastically reduce operating temperature. All bearing housings are suitable for the reinforced “HD” version, which is equipped with angular contact bearings and roller bearings. This series also includes a stronger bearing housing that can operate for up to 100,000 working hours.
2. One casing, 12 sealing systems
For each pump size, a unique casing can accommodate any type, brand and sealing choice. The sealing chamber dimensions 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 use a unique casing that applies to both closed (fitted with a wear ring) and open (with a replaceable wear plate) impellers. This versatility allows the pump to be easily used in new installations and processes.
4. Wear plate and adjustment
The replaceable wear plate guarantees a long pump life and reduces maintenance costs. In addition, the bearing housing is equipped with an axial clearance adjustment that is easily accessible from the drive side.
RGM
Monoblock version with standard B5 electric motor.
RGL
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.
RGB
Shaft version: pump with independent bearings lubricated with oil or grease, coupling (short or spacer), base and motor.
RGV
Vertical version with intermediate sleeves.
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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Centrifugal pumps with closed impeller – RD series
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industrial sectors (wastewater treatment plants, paper industry, surface treatment, chemical processes, mechanical industry, paint and coatings industry, tanning).
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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).
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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).
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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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In post-war Japan, the infrastructure for water supply and treatment plants was underdeveloped, and poor-quality drinking water spread many infectious diseases. Toshio Yamada wanted to change this, so in 1965 he began producing equipment for chlorine disinfection at his home in Ikuno-cho, Asago City, Japan. This became the starting point for what would later become the pump manufacturer Tacmina. In 1965, the first dosing pump, the “N-Feeder S-Type,” was launched, and today Tacmina is a well-known global supplier of dosing pumps and pulsation-free diaphragm pumps of the highest quality.
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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.
