Submersible Pump Performance: Separating Myths from Facts

Thousands of visitors, music, culture, and plenty of outdoor activities – the Pfadi Folk Fest 2026 was once again a major event for Switzerland's scout community. Organised entirely by volunteers, the large open-air festival brought together people from across the country for several days of shared experiences and entertainment.
But an event of this scale also requires reliable infrastructure behind the scenes. That is where our Swiss market partner Pumpen Lechner stepped in – with Tsurumi pumps providing reliable wastewater disposal throughout the festival.

September 9 was a very special day for our colleagues at Tsurumi France: not only did they celebrate the inauguration of their new headquarters in Saint-Estève-Janson, but also the 35th anniversary of Tsurumi's French subsidiary.
A great double occasion – and one that called for a celebration together with colleagues, customers, and friends of the company. Representing Tsurumi Europe, Daniel Weippert, Birger Schmidt, and Hiro Naruse travelled to France to join the celebrations and personally congratulate the entire Tsurumi France team.

Reliability, durability and exceptionally long service life have made Tsurumi pumps highly successful in demanding applications around the world. Unfortunately, market success also attracts imitation. Some suppliers offer copies of Tsurumi high-performance pumps that may look similar at first glance – but appearances can be deceptive.

Tsurumi pumps are designed to prevent overheating during dry running and protect their sealing surfaces from damage. This allows them to operate reliably around the clock, even when water levels are low.
For continuous operation, however, energy efficiency is also an important consideration. That is why Tsurumi offers contractor pumps equipped with electronic level control. The pumps start automatically when the water reaches a predefined level and switch off again as soon as the water level drops below it. This ensures that the pumps only operate when they are actually needed.

Pump blockages are one of the most common reasons why submersible pumps lose performance or stop operating altogether. Solids accumulating around the impeller, suction plate or discharge pipe reduce hydraulic efficiency, increase wear and can eventually lead to costly downtime.
Fortunately, many blockages can be prevented through proper pump selection, correct system design and regular maintenance.

Selecting the right sewage pump is a key factor in ensuring reliable wastewater and industrial dewatering operations. Every application places different demands on pumping equipment, whether it involves fibrous materials, abrasive solids, sludge or corrosive liquids. Choosing the appropriate pump and impeller configuration helps reduce clogging, minimise wear and improve long-term system performance.

Submersible pumps are often required to perform under the toughest operating conditions. Whether in mining, construction, wastewater management or industrial applications, they must handle abrasive slurries, corrosive liquids and demanding duty cycles every day. Without the right selection, installation and maintenance, these harsh environments can significantly reduce pump life and increase operating costs.
Fortunately, there are proven ways to maximise reliability, minimise downtime and extend the service life of your Tsurumi submersible pump. Here are six practical recommendations from our experts.

A major milestone is approaching in one of Berlin's most important water infrastructure projects. Construction of a new 30-metre-deep stormwater overflow basin began in January 2025, and after around 18 months of continuous dewatering, the project is now preparing for its first test flooding.
Throughout the construction phase, groundwater and surface water have been reliably collected in pump sumps and removed using Tsurumi submersible pumps. For this demanding application, our trusted market partner Biergans Pumpen-Vertrieb GmbH selected Tsurumi's robust LH series, which has delivered virtually wear- and maintenance-free operation under challenging site conditions.
As the project progressed and operating conditions changed, the originally installed LH 23.0 was complemented by the even more powerful LH 25.5, ensuring maximum performance and reliability throughout every stage of construction.
With the completion of the basin now in sight, Berlin's impressive Stormwater Overflow Basin No. 4 is almost ready for its test flooding. The drainage process will once again rely on Tsurumi technology, with two GPN622 pumps equipped with protective cages standing by for operation.
From the very beginning, Biergans Pumpen-Vertrieb GmbH has supported this flagship project with premium Made in Japan pump technology and outstanding technical expertise. The upcoming test flooding marks another significant milestone as this major infrastructure project moves towards completion.
Once operational, the underground basin will provide a storage capacity of 16,750 cubic metres—equivalent to approximately four and a half modern Olympic-sized swimming pools. It forms an important part of Berliner Wasserbetriebe's long-term Storage Capacity Programme, designed to strengthen Berlin's stormwater management infrastructure and help protect the city's waterways during heavy rainfall events.
#Tsurumi #TsurumiPump #Berlin #Infrastructure #WaterInfrastructure #StormwaterManagement #Dewatering #SubmersiblePumps #MadeInJapan #Engineering #Construction #PumpTechnology #FloodProtection #Wastewater #BerlinerWasserbetriebe #BiergansPumpen #Reliability #HeavyDutyPumps

Many cases of overheating motors or underperforming pumps are not caused by the quality of the motor itself. In fact, the root cause is often found in the electrical power supply.
A common mistake during troubleshooting is measuring the electrical values when the pump is not operating under full load. In such situations, the readings may appear to be within standard limits, while the actual problem only becomes visible during normal operating conditions.
To ensure accurate diagnostics, the following points should always be considered:
1. Measure only while the motor is running
Electrical measurements should always be taken when the motor is in operation to obtain meaningful results.
2. Check for voltage drop
Undersized conductors or excessively long cable runs can cause significant voltage drops under heavy load conditions.
3. Measure all three voltage pairs
Check the U, V and W phase pairs. Standard operating voltage is typically between 380 and 400 volts.
4. Monitor voltage balance
Large voltage differences between phases can lead to increased motor temperatures and premature failure.
5. Isolate and inspect each phase
Disconnect and test each phase individually to identify potential mechanical blockages or load-related deviations.
6. Perform a warm-up test
High starting currents combined with poor electrical connections can quickly reduce system performance and efficiency.
Understanding the relationship between power quality and pump performance is essential for reliable operation and long service life. Proper electrical testing under real load conditions can help prevent unnecessary downtime, reduce maintenance costs, and improve overall system efficiency. Very important: Electrical work must only be performed by qualified electrical personnel.
If you have any questions about this topic or would like to learn more about our pump solutions, our team will be happy to assist you. Simply send us a short email, and we will get back to you as quickly as possible: sales@tsurumi.eu
#stronger4longer #Tsurumi #TsurumiEurope #PumpTechnology #IndustrialPumps #MotorPerformance #PowerSupply #ElectricalEngineering #PumpMaintenance #IndustrialSolutions #EnergyEfficiency #Troubleshooting #PumpSystems #EngineeringExcellence #PreventiveMaintenance #IndustrialEquipment #TechnicalSupport #PumpExperts

⛏️ From today until Thursday, our colleagues from Tsurumi Sverige are proudly exhibiting at the Euro Mine Expo in Skellefteå — one of Europe's most important meeting places for the mining industry.
Visitors can find Tsurumi at Stand 280 in the Copper Hall, where we are showcasing our powerful and highly efficient pump solutions designed specifically for demanding mining applications. Known for their reliability, durability, and long service life, Tsurumi pumps help mining operators maintain efficient and dependable dewatering processes even under the toughest conditions. ⚙️
Held every two years, Euro Mine Expo attracts approximately 200 exhibitors from 40 countries, bringing together industry experts, suppliers, and decision-makers from across the global mining sector. The exhibition provides an excellent platform for networking, innovation, and the exchange of the latest technologies and solutions shaping the future of mining. ????????
We are excited to be part of this important industry event and look forward to welcoming visitors, partners, and customers to our stand throughout the exhibition.
#Stronger4Longer #Mining #EuroMineExpo #Tsurumi #MiningSolutions #Dewatering #PumpTechnology #MiningIndustry #IndustrialPumps #InnovationInMining

Tsurumi looks back on a highly successful IFAT 2026 in Munich, where the company welcomed numerous visitors from across the international water and wastewater industry over the course of the four-day exhibition.
The event once again proved to be an important platform for exchanging ideas, presenting innovative technologies, and strengthening relationships with customers and partners. Tsurumi's high-performance pumps and digital solutions attracted significant attention throughout the exhibition, while the company's Japan-inspired booth in Hall B1 created a welcoming environment for in-depth technical discussions and networking.
Particularly encouraging for the Tsurumi team was the strong interest shown by industry professionals in the company's broad portfolio of construction, industrial, and wastewater solutions. Visitors explored technologies including cutter pumps, aeration systems, foam separators, and digital monitoring applications. The many conversations held during the exhibition also provided valuable insights into current market requirements and operational challenges faced by customers in the field.
Tsurumi emphasises that direct dialogue with users and partners remains an essential part of product development and innovation. The exchange of practical experience and application-specific requirements helps the company continuously improve its technologies and services.
Although IFAT 2026 has now concluded, the trade show season continues for Tsurumi across Europe. In the immediate aftermath of IFAT, visitors in northern Italy still have the opportunity to experience Tsurumi solutions at SAMOTER in Verona, where the company's Italian market partners at DRAGFLOW are presenting heavy-duty construction and industrial pumps at Booth D6.
Additional exhibitions and industry events are scheduled throughout Europe until the end of June, underlining Tsurumi's ongoing commitment to staying close to customers and industry professionals across the region.
Further information about upcoming trade shows and exhibition dates can be found on the Tsurumi website.
#stronger4longer #IFAT2026 #WaterTechnology #WastewaterManagement #IndustrialPumps #Engineering #TradeShow #SAMOTER #Infrastructure #Tsurumi #IFAT26 #IFAT #dragflow #dragflowdredge

Tom from our Tsurumi team in Düsseldorf recently returned from a visit to one of the most advanced pump and motor production facilities operated by our parent company in Kyoto, Japan — and his impressions speak volumes.
What immediately stands out is the extraordinary level of integration. From raw material processing and precision machining to fully automated assembly and final performance testing, every step of the production process is seamlessly connected under one roof. This end-to-end approach not only drives efficiency but ensures consistently high quality and reliability across the entire product range.
The sheer scale of operations is equally impressive. The facility handles everything from compact units to large, custom-built pumps, all supported by cutting-edge testing infrastructure. Large-scale performance testing systems and dedicated research and development laboratories underline the company's commitment to innovation and engineering excellence.
Advanced manufacturing technologies are at the heart of this operation. Robotics, flexible production systems, and even 3D-printed moulds are used to push precision and consistency to new levels. Yet, beyond the machinery, it is the mindset that truly defines the facility: a relentless focus on quality, continuous improvement, and long-term thinking.
This philosophy becomes even more tangible at the ACQUA MUSEO, located within the Kyoto site. The museum offers visitors a journey through the history and evolution of water technology and pumping systems. It highlights how today's sophisticated solutions are built on decades of engineering expertise and innovation. The exhibition also emphasizes the crucial role pumping systems have played in shaping modern cities, improving public health, and enabling industrial development.
The combination of state-of-the-art manufacturing and deep respect for technical heritage creates a powerful perspective: innovation does not begin from scratch — it is built on experience, knowledge, and continuous refinement.
For a closer look at this impressive facility in action, watch the video here:
https://www.youtube.com/watch?v=_CCpRZuMLWk
#Tsurumi #Innovation #ManufacturingExcellence #Engineering #Industry40 #PumpTechnology #Kyoto #ContinuousImprovement #stronger4onger

Today, April 8, the highly anticipated Mining Türkiye officially opens its doors in Istanbul, bringing together key players from the mining industry across the region.
Visitors to the exhibition will have the opportunity to experience cutting-edge dewatering solutions firsthand at the booth of our Turkish market partner BİLGİ MÜHENDİSLİK TİCARET, located in Hall 7, Booth 706B.
Among the highlights on display are two of the most powerful pumps from the Tsurumi Manufacturing portfolio:
The GSZ2-75-4L, equipped with a 75 kW motor, weighs an impressive 1.2 tons and delivers up to 17,500 liters of water per minute.
The LH6110, featuring a 110 kW motor, achieves a pumping capacity of 3,000 liters per minute with a delivery head of up to 177 meters.
These exceptional specifications make both units ideally suited for demanding mining applications and a perfect match for one of the region's most important industry events.
Another standout exhibit is the KTZ pump in a horizontal dry installation—an innovative configuration made possible by Tsurumi's unique double inside mechanical seal with oil lifter technology. This solution demonstrates the brand's commitment to reliability and engineering excellence.
In addition, visitors can explore a wide range of other pump series on display, including the KTZ, KTV, and KRD models, as well as compact single-phase pumps from the HS and LB series.
Our Turkish colleagues warmly invite all attendees to visit the booth, discover the latest technologies, and discuss individual project requirements in person.
We look forward to welcoming you in Istanbul!
#stronger4longer #MiningTürkiye #Tsurumi #DewateringSolutions #MiningIndustry #PumpTechnology #IstanbulEvents #EngineeringExcellence #IndustrialPumps #TsurumiEurope

Understanding how a pump operates within a system is essential for achieving both efficiency and reliability. Tsurumi highlights the importance of pump performance curves as a key tool for selecting and operating pumps სწორly—helping to avoid excessive wear, vibration, and premature failure.
A pump performance curve shows the relationship between flow rate and head pressure, indicating how a pump performs under different conditions. By identifying the correct operating point—defined by the required flow rate and Total Dynamic Head (TDH)—users can determine whether a pump is suitable for their system. TDH includes both static head (vertical lift) and friction losses within the system.
At the center of efficient operation lies the Best Efficiency Point (BEP), where the pump delivers maximum hydraulic efficiency with minimal energy use. Operating near the BEP ensures balanced internal forces, smooth performance, and reduced mechanical stress. Selecting a pump that runs close to this point under normal conditions is key to maximizing efficiency and extending service life.
Running a pump far outside its BEP can lead to serious issues. Imbalanced forces inside the pump increase stress on components such as bearings, seals, and shafts, potentially causing premature failure. In addition, hydraulic instability may occur, leading to cavitation—where vapor bubbles form and collapse—damaging internal components and accelerating wear.
Efficiency can also decline over time due to wear, deposits, blockages, or insufficient maintenance. These factors can shift the operating point away from the BEP, increasing energy consumption and reducing performance. Regular inspection, cleaning, and maintenance are therefore essential.
To ensure optimal performance, it is recommended to regularly verify the actual operating point using flow and pressure measurements. If necessary, system adjustments—such as modifying resistance or valve settings—can help bring the pump back into its optimal range.
Conclusion: Correct interpretation of pump curves, accurate system design, and continuous monitoring are crucial for maintaining energy-efficient and reliable pump operation.
For expert advice on optimizing your Tsurumi systems, please, contact:
sales@tsurumi.eu
#Tsurumi #PumpPerformance #EnergyEfficiency #IndustrialSolutions #Engineering #Sustainability #stronger4longer

Tsurumi is launching a new series of online training sessions dedicated to some of its most impressive pump solutions. While previous trainings have mainly focused on technical topics, the upcoming four-part series will spotlight individual pump ranges and their real-world applications.
The series begins on Friday, 6 March, with the KRS811, an extremely wear-resistant pump developed for demanding tunnel construction projects. The pump is widely used by customers to lower groundwater levels and drain large construction sites, often operating in 24/7 continuous duty under very challenging conditions.
During the live session at 11:00 a.m. (CET), participants will gain a detailed overview of the KRS811, including its design, special features, and the key applications for which it is best suited. The training will also present typical use cases and provide insights into how the pump performs in harsh construction environments.
Participation in the English-language online training is free of charge. The series will continue over the coming weeks with additional sessions highlighting other robust Tsurumi pump ranges. Simply click here on the respective training session and you will participate in the training session via Zoom:
27 March: The robust slow-speed pumps of the GSZ series, including new models
17 April: The jacket-cooled slurry pumps of the NKZ series
15 May: The heavy-duty sand pumps of the GSD series
Anyone who would like to learn more about the KRS series in advance can already find detailed specifications and further information on the Tsurumi website.
#Tsurumi #PumpTechnology #OnlineTraining #ConstructionPumps #EngineeringSolutions

Diesel generators have long been the standard power source for construction and sewage pumps. But the industry is evolving. Today, battery-powered mobile energy solutions offer a cleaner, quieter, and emission-free alternative — without compromising on performance.
In cooperation with Tsurumi Pumps UK and Instagrid, real-world performance tests were carried out to explore this sustainable approach.
Two pumps were connected to battery-powered generators:
The LB-480 drainage pump
The KTV3-55 heavy-duty tunnel construction pump
The goal: measure how much water could be transported on a single battery charge.
The Results Speak for Themselves
Both units pumped approximately 40,000 litres of water on just one battery charge.
✔ Energy-efficient
✔ Quiet in operation
✔ Completely emission-free
These impressive results demonstrate that battery-powered solutions are no longer a niche alternative — they are a viable, future-ready option for dewatering applications on construction and infrastructure sites.
Detailed insights into the test setup and results can be found here.
If you would like to learn more about our pumps or discuss the ideal power supply solution for your project, our team will be happy to assist you.
#stronger4longer
#Tsurumi #BatteryPower #EmissionFree #Dewatering #ConstructionSite #SustainableConstruction #Innovation #Infrastructure #CleanEnergy

We recently welcomed our Finnish market partners to the Tsurumi European headquarters in Düsseldorf for an intensive two-day training programme. Six participants from our authorised dealer Machinery Oy and its service partner Flowplus Oy took part in the practical course, which combined in-depth product knowledge with hands-on experience.
Following a welcome dinner the evening before, the training began with an introduction to the Tsurumi brand and its comprehensive product portfolio. Our technical experts Stefan Himmelsbach, Sandor Rostas and Fernando Morales guided the participants through the programme with great enthusiasm and expertise.
A key focus was placed on the unique features of Tsurumi high-performance pumps, including the double internal mechanical seal and the oil lifter – both developed in-house by Tsurumi engineers and technicians. Further topics included the function of the motor protection plug, checking the correct direction of rotation, identifying pumps with missing or damaged nameplates, and an overview of pressure booster and jet pump systems. Participants also gained valuable insights into the capabilities of the Tsurumi Connect digital monitoring system.
In addition to the theoretical sessions, the training placed strong emphasis on practical application. Together with our Finnish guests, used pumps were examined and their condition assessed. Participants were able to dismantle individual units themselves, reassemble them professionally and carry out functional testing afterwards.
After two informative and engaging days filled with technical knowledge, practical tips and valuable exchange, we said goodbye to our Finnish colleagues. We would like to thank all participants for their commitment and look forward to continuing our successful collaboration in the future.

When water rises unexpectedly, there is no room for delays. In civil engineering, tunnel construction, drainage projects or flood situations, reliable pump technology must be available immediately. Downtime can lead to costly damage, safety risks and project delays.
While many manufacturers rely on order-based production and therefore struggle with long delivery times, Tsurumi takes a different approach. Almost all of the company's more than 500 pump models are available directly from stock, giving customers a decisive time advantage in critical situations.
Stock Instead of Waiting Time
"We have made a virtue out of necessity," explains Daniel Weippert, Managing Director of Tsurumi Europe GmbH.
"As delivery times from our central factory in Japan are long, we must ensure sufficient availability in Europe."
To achieve this, Tsurumi maintains a six-month supply for the European market in its central warehouse in Antwerp. In addition, a three-month stock for Germany, Austria and Switzerland is held in Düsseldorf. Spare parts are also kept comprehensively in stock – not based on sales frequency, but according to practical necessity. This ensures that the full product range can be supported at all times.
A Decisive Advantage in Time-Critical Applications
Immediate availability is particularly crucial in construction drainage, special civil engineering, emergency situations and accident response.
"When an excavation pit fills up or heavy rainfall is forecast, there is simply no time to wait weeks for equipment," says Weippert. "In such cases, we deliver within hours via express direct shipment."
This logistics strategy enables Tsurumi to respond quickly and reliably whenever powerful pump solutions are urgently required – whether for planned projects or unforeseen emergencies.
Need a Pump at Short Notice?
If you require high-performance pumps at short notice, Tsurumi is ready to help.
Simply contact the sales team by email at sales@tsurumi.eu
.
#stronger4longer #PumpTechnology #ImmediateAvailability #CivilEngineering #ConstructionDrainage #FloodControl #EmergencySolutions #Tsurumi #EngineeringReliability

In certain applications, customers deliberately choose to install their Tsurumi pump dry next to a sewage or wastewater tank. This setup offers clear advantages: maintenance work becomes faster, safer and more convenient. However, one crucial factor must be considered in dry installations – reliable motor cooling.
Submersible pump motors are normally cooled by the surrounding liquid. When a pump is installed permanently outside the tank, this natural cooling effect no longer applies. Without an appropriate cooling concept, overheating and premature wear would be unavoidable.
This is where Tsurumi's intelligent pump design comes into play.
Built-in cooling – even when installed dry
Tsurumi pumps designed for dry installation feature a proven cooling system:
A cooling jacket guides the pumped liquid around the motor to dissipate heat effectively
A bypass system ensures a constant flow into the cooling jacket
The motor remains reliably protected against overheating, even when the pump is not submerged
Why this matters for your operation
Reduced maintenance effort: Dry installations improve accessibility and shorten service times
Longer service life: Stable cooling protects the motor from thermal stress
Higher operational reliability: Correct cooling prevents unplanned downtime and costly repairs
To learn more about how cooling works in dry-installed Tsurumi pumps, watch our dedicated training video on YouTube.
If you are looking for a pump solution that operates reliably both underwater and in dry installations, our team will be happy to support you. Simply contact us at sales@tsurumi.eu
#stronger4longer #PumpTechnology #DryInstallation #WastewaterSolutions #SubmersiblePumps #IndustrialPumps #Engineering #ReliableSolutions

While much of the Lyon–Turin tunnel is being excavated using tunnel boring machines, several sections rely on traditional blasting techniques. Here, workers drill deep holes into the rock, fill them with dynamite, and detonate them to advance the tunnel. The loading drill shown in our photo breaks through the rock face, allowing the explosives to be placed precisely.
Each blast, however, brings new challenges: fresh water inflows emerge from the surrounding rock, carrying dust, metal particles, and coarse debris. This mixture must be pumped out continuously to keep the site safe and operational. The conditions are some of the toughest imaginable for any pump:
24/7 continuous duty
Occasional dry running
Highly abrasive water containing rock and cement particles
Strong vibrations and occasional heavy impacts
In this demanding environment, Tsurumi pumps show exactly why they are trusted worldwide in tunnel construction. They are:
Exceptionally durable and high-performing
Extremely robust and wear-resistant
Simple to service and maintain
Whether you need compact units or high-capacity powerhouses, Tsurumi offers a full range of pumps engineered for the toughest underground conditions.
If you would like expert advice on selecting the right model for your project, just send us a quick message at: sales@tsurumi.eu
- we are here to help!
#stronger4longer #tunnelling #undergroundconstruction #engineering #civilengineering #infrastructure #LyonTurinTunnel #TsurumiPumps

Water quality has a direct impact on the performance, durability, and maintenance requirements of pump systems. Poor water conditions or specific characteristics can cause failures, increase repair costs, and significantly reduce the service life of a pump. Understanding the type of water in use is therefore essential for ensuring long-term efficiency.
Common Water Types and Their Effects on Pumps
Saltwater
Saltwater environments place extreme demands on pump materials. High salt concentrations can quickly cause corrosion and damage if equipment is not properly maintained. Submersible pumps in coastal or marine environments require robust construction and corrosion-resistant materials.
Freshwater
While freshwater is generally less aggressive, it still presents challenges. Neutral pH levels slow corrosion, but long-term exposure can still affect metal components. Additionally, mineral deposits and residues can clog inlets and reduce flow efficiency.
Contaminated Water
Contaminated or polluted water often contains sediments, oils, chemicals, and solids. These impurities accelerate wear, impair hydraulic performance, and may damage critical internal components.
Acidic Water
Acidic liquids, even in low concentrations, can attack metal surfaces and seals. Incorrect material selection may lead to leaks, corrosion, and unexpected downtime.
Why Tsurumi Pumps Are the Right Choice for Any Water Type
Selecting a pump that matches the water quality is essential for efficiency, reliability, and long service life. Tsurumi pumps are specifically engineered to handle a wide range of challenging environments—saltwater, freshwater, contaminated water, or acidic conditions.
Key advantages include:
Corrosion-resistant materials:
Tsurumi uses durable alloys such as 316 stainless steel and advanced composite materials designed to resist aggressive water conditions.
Protective coatings:
Critical components feature special coatings that reduce wear and provide long-term protection.
Optimized engineering:
Every design element—from mechanical seals to impeller geometry—is built for maximum resilience against corrosive or abrasive liquids.
Need Support Choosing the Right Pump?
Our team is happy to help you select the ideal Tsurumi pump for your project and local water conditions.
Simply send us a message and we will get back to you as soon as possible: sales@tsurumi.eu

In the Gorges du Verdon, one of France's most famous gorges, an ambitious construction project is currently underway: a 250-metre bypass is being built to secure a tunnel. Before excavation could even begin, a major challenge had to be overcome — the diversion of an impressive 180,000 cubic metres of water.
The team from Tsurumi France took on this demanding task with precision and determination. Over the course of a week, the team prepared the site by lowering three series of Tsurumi pumps 22 metres below ground level, installing pipes for horizontal water drainage (with a 21-metre height difference), setting up settling basins, and completing all electrical connections.
On Tuesday, 3 September, at 8:30 a.m., the pumps were started:
One GSZ, two KRD and three LH models, each designed for extreme operating conditions, worked continuously and reliably until Thursday, 5 September, at 1:30 a.m. By that time, 90,000 cubic metres of water had already been successfully pumped out — the remainder drained away naturally by gravity.
This impressive operation once again demonstrates the reliability, strength and endurance of Tsurumi pumps – even under the toughest environmental conditions.
Would you like to learn more about our high-performance pumps, made in Japan?
Contact us at sales@tsurumi.eu
#Tsurumi #WaterManagement #ConstructionPower #MadeInJapan #PumpingPerformance #EngineeringInAction #TunnelConstruction #stronger4longer

At Tsurumi, the commitment to delivering exceptional pump quality "Made in Japan" is deeply rooted in every stage of development. To maintain and continuously prove this standard, all new pumps and prototypes undergo rigorous testing procedures before being released to the market.
Each model is examined in detail through comprehensive performance, motor, thermal, seal, and durability tests. These evaluations are carried out in advanced in-house facilities, including ventilation tanks, performance testers, and thermal testing systems.
To ensure objective verification, Tsurumi also works closely with independent experts from universities, research institutes, and certification bodies. This collaborative approach guarantees that every Tsurumi pump meets the highest technical and safety standards.
In addition to continuous internal testing, the company is investing further in its testing infrastructure to achieve both optimal pump performance and the required solids permeability for demanding applications. Thanks to state-of-the-art 3D printing technology, test-ready prototypes can now be produced in a very short time — significantly accelerating the development process.
With these efforts, Tsurumi reinforces its position as one of the global leaders in reliable and durable pumping solutions, ensuring that every product lives up to its promise: #Stronger4longer.
For more information or technical advice, please contact our team at: sales@tsurumi.eu

You can meet our French colleagues from Tsurumi France from Tuesday to Friday, 7-10 October, at a very important trade fair in Lyon: At Pollutec in Hall 6, Stand C090, an unusual programme awaits you: Every lunchtime, we invite you to an exclusive gastronomic event – a delicious break in the middle of the trade fair!
And every afternoon, you can experience pure action at the workshop on installing and removing #Tsurumi pumps. As a reward, you will receive an aperitif set!
In addition to culinary discoveries and technical challenges, the Tsurumi stand at #Pollutec is of course the place to find out about powerful pump models.
From Thursday to Saturday, 9–11 October, we look forward to welcoming you to the Tiefbau LIVE fair in Karlsruhe!
At stand F348 in area P3 of #TiefbauLIVE, Tsurumi will be showcasing a wide range of pumps in three areas:
- Powerful 230V pumps for civil engineering – ideal for dirty water, sludge and residual water on construction sites. Here, visitors can experience the LSC2.75 in wet live operation, among other things. Also on display are the LBA, HSA, HSD and NK series, as well as the robust 50 UTA2.75 for tough solid admixtures.
- Applications for buildings, basements and properties. Among other things, the super-compact Family series, a cutaway model of the POMA and the PNI will be on display here. A petrol-powered TEM-25H ensures self-sufficient operation, while our LSC flat suction pump with flange connection will be demonstrated in operation as a complete system.
- 400V pumps for demanding applications in infrastructure construction, building maintenance and special civil engineering. Tsurumi will be showcasing the powerful KTZ, KTVE and KTD. The technical highlight will be the powerful GPN3-80 agitator pump, presented as a sophisticated cutaway model – a real eye-catcher for anyone interested in technology.
Come to Lyon and Karlsruhe! We will bring you up to date on the latest developments in pumps for tough applications.
#stronger4longer

This coming Friday, September 26, at 11 a.m. (CEST), take about 30 minutes to join us for a new #Tsurumi online training session! Our technical experts will discuss the importance of pipe type and inner diameter in the design of submersible pumps.
Why is this so important for you? Because the choice of pipe type and internal diameter determines the efficiency and service life of submersible pumps. This is because they influence the hydraulic resistance and flow conditions.
Empirical data from practical experience shows that pipes with too small a diameter or made of unsuitable materials lead to increased pressure loss and, in extreme cases, to cavitation. The pump becomes overloaded, and its service life is shortened.
For example, a pipe that was too small (DN50 instead of DN80) in a sewage system doubled energy consumption and caused frequent failures due to overheating. Conversely, a correctly dimensioned pipe in a similar application reduced maintenance costs by 30% and extended the service life of the pump by two years.
In the live training session, we explain how to find the right pipes for your Tsurumi pump and the respective application. This is an important topic that you should not miss. We appreciate your interest! Use this link to join the free livestream on September 26:
https://us06web.zoom.us/webinar/register/4417387624970/WN_DSdQup5pQqyz6rqUIQFd5g
#stronger4longer

Tsurumi pumps are ready for use straight from the factory and impress with their highly reliable and powerful performance from the moment the motor is started.
However, many of our customers naturally have special requests regarding the equipment of our pumps. Some want to convert the units for use in salty seawater. Others are looking for a way to install heavy pumps in a stable, free-standing position. Or they simply want to add a float switch.
We are happy to fulfil these and other requests with our range of accessories. You will find a wide selection on our website. These include:
- Various wear parts
- Pump outlets
- Flange adapters
- LSC suction adapters
- Electrode extensions
- Conversion kits for residues
- Electrode protection covers
- Oil leak sensors
- Seawater-resistant kits
- Float switches
- Motor protection plugs
- Kits for free-standing installation
- Guide rail mounting systems
- Cable repair kits
No more guessing what fits – we'll show you online. Click here and get the perfect combination: https://www.tsurumi.eu/products/accessories-575
Please take your time to browse and select the accessories you need. Of course, we are also happy to advise you personally. Simply send us an email and we will get back to you as soon as possible: sales@tsurumi.eu
#stronger4longer #accessories

Visit our Finnish market partner Machinery Oy at #MAXPO, Finland's largest special exhibition for the construction industry!
From 28 to 30 August, you can discover #Tsurumi pumps at Hyvinkää Airfield at stand A143.
Anyone involved in construction projects in Scandinavia will discover the latest machinery and technologies at MAXPO. It goes without saying that Tsurumi contractor pumps will be there too. We look forward to seeing you there from Thursday onwards!
You can find more information about the trade fair on the MAXPO website: https://maxpo.messukeskus.com/en/
#stronger4longer

In Italy, at our partner Dragflow we trained 12 experts and customers on #Tsurumi pumps over two days! The comprehensive programme included a large theoretical section and, of course, practical work on selected pumps!
First, we provided information on:
- our company
- the Tsurumi product portfolio with technical features
- differences in hydraulics
- applications in tunnel construction
- special applications such as booster/jetting
- our TRN submersible aerators
For the practical part, we randomly selected three rental pumps that had been returned shortly before. Therefore, we did not know what condition they would be in until we opened the pumps.
An LSC1.4S ran continuously for many years without maintenance, which is normal for Tsurumi pumps. Everything, including the motor, was in good condition; only the check valve and base plate had to be replaced.
An LH311W had been operating in salty seawater for two months. It was in good condition, only the sacrificial anodes in the strainer had to be replaced.
And in the case of a KRS822 after 12 months in salt water, the electrical parts were also in good condition. The hydraulic parts had to be replaced and serviced due to prolonged use in salt water.
The participants enjoyed dismantling and inspecting the pumps and carrying out the maintenance tasks. And we were happy to once again impart valuable knowledge about pumps!
Are you also interested in on-site training with our pump professionals? Then please send us an e-mail: sales@tsurumi.eu

With the #Tsurumi guide rail systems, our pumps can be easily connected, moved up and down and removed again. Each system consists of rails or channels that connect the pump to the pipework. When the pump is lowered or raised, it slides along the rails - connected to an outlet pipe.
The guide rail systems simplify maintenance and reduce the risk of extended downtime. Unlike fixed pipework systems, which can take several hours to install and assemble, a pump on a guide rail is ready for operation more quickly.
Guide rail systems are particularly important in wet wells or sumps. For lifts deeper than four and a half metres, we recommend using a direct guide rail mount for added stability and smoother pump removal. Material selection is an important factor when choosing a guide rail system. Depending on the type of liquid being pumped, the rails can be made of stainless steel, cast iron or high-density polyethylene.
We are happy to answer your questions about the different types of our guide rails. Simply write to us at: sales@tsurumi.eu

#Tsurumi pumps can be operated automatically in two ways: Via activation by a float switch or via an electrode.
Float switch
Float switches are often used where the performance of a pump is to depend on the water level. The switch is located in a piston that floats on the surface of the water. When the water level rises or falls, the float moves into position and opens or closes an internal switch that controls the pump's output.
Electrode
An electrode sensor recognises water based on its conductivity. It activates the pump when it is submerged under water. Unlike float switches, electrode sensors do not rely on mechanical movements. Instead, they utilise the natural conductivity of water to trigger an electrical reaction. Electrode sensors are permanently mounted directly on the pump. Ideal for installations where space is limited or a float mechanism could be blocked.
#stronger4longer

From Sunday to Tuesday you can experience #Tsurumi pumps live at @Demopark 2025! This is Europe's largest open-air exhibition for the green construction industry! At the Eisenach-Kindel airfield in Hörselberg near Eisenach, construction machinery manufacturers will be showcasing their equipment and ideas for environmentally friendly and nature-orientated work. In our trade fair luggage we have for you, among other things:
• our puddle suckers Family and LSC 'in action'
• HS2.4S with flat suction plate
• HS2.75S
• HS3.75SL
• LB480A
• POMA
• 50UT2.4S
Visit us at stand F-603 - we look forward to seeing you!
Find out more about the #Demopark here:
https://demopark.de/
#stronger4longer #demopark25

The #NAK agricultural and farming machinery exhibition in Mezőfalva/Hungary, which we have also announced on our website, has been cancelled! The trade fair, at which our Hungarian market partner #VERBIS also wanted to present #Tsurumi high-performance pumps, was actually scheduled to take place this Wednesday and Thursday (4/5 June). However, there are currently outbreaks of foot-and-mouth disease in the region. In order to minimise the risk, the National Chamber of Agriculture (NAK) and the National Association of Dealers in Agricultural Equipment and Machinery have decided to cancel the fair.
If you are interested, you can of course experience Tsurumi pumps live not only at trade fairs, but also with our market partners and us: https://www.tsurumi.eu/about-tsurumi/distribution-network-15. Feel free to contact the experts on site - in Hungary, for example, our colleagues from VERBIS: https://www.verbis.hu/

Today and tomorrow, the key players in the #water industry are meeting in Bordeaux at Cycl'eau. Among the 150 exhibitors is #Tsurumi. Our colleagues from Tsurumi France look forward to seeing you at stand H3! Discover our range of industrial, construction, submersible and sewage pumps for all cases where water needs to be removed.
Find out more about the #Cycleau:
https://www.cycleau.fr/
#stronger4longer

Time is of the essence on the construction site of the future underground railway in #Toulouse, France. There is no time to chase numbers - especially when it comes to the quantities of #water to be pumped, the performance or the traceability required by the authorities. #Tsurumi Connect helps with all these issues:
Our digital system collects real-time data from the connected pumps, checks the direction of rotation and phase, monitors operating costs, enables preventive maintenance of the pumps and issues push notifications in the event of problems so that a quick response can be made.
Our colleagues from Tsurumi France installed the system on the large construction site and coupled it with a flow meter. The result: a reduced operational load, better responsiveness and more transparency for the teams on site and the site managers.
Details about Tsurumi Connect can be found here: https://www.tsurumi-connect.eu/
If you are interested in our digital system, we will be happy to advise you: sales@tsurumi.eu
#stronger4longer #tunnelling

Did you miss #BAUMA2025 in Munich? Too bad, because then you also missed the #Tsurumi highlights that we presented in Munich this year. These mainly included our contractor, wastewater and sewage pumps, but also a lot more - such as a smart booster installation with pumps connected in series, which we used to show how you can digitally network analogue pumps with Tsurumi Connect. This allows you to control, monitor and analyse your pumps or other connected machines.
To give you an impression of the trade fair, our video summarises seven exciting days at the fair in 80 seconds:
https://youtu.be/3BLHU9zyJJ4
#stronger4longer #bauma #bauma25 #wastewater #sewage

Are you already looking forward to #BAUMA in Munich? This world trade fair for the construction industry only takes place every 3 years. As of today, the time has come again, and of course #Tsurumi is there.
We will be showing a large selection of contractor, #wastewater and sewage pumps at our stand A6.338 - and more: using the example of a smart booster installation with pumps connected in series, we will show you how you can digitally network analogue pumps: with Tsurumi Connect. This allows you to control, monitor and analyse your pumps or other connected machines. Furthermore you can experience for example the #Tsurumi CZ - our most powerful #sewage pump - at our booth. It has a special cutting configuration to prevent hard and fibrous solids from causing blockages. We will also be exhibiting TRN submersible aerators and MMS agitators for the wastewater sector at #BAUMA - and of course our compact wonders, the LSC flat puddle suckers. These remove #water down to a residual moisture content of one millimetre. In addition, despite their power, the LSC units are real lightweights so that they can be carried quickly to any job site.
Our place of operation from 7 to 13 April is #BAUMA2025 - hopefully yours too: We will welcome you to stand A6.338 with a Japanese ambience including a cosy bar and our tatami lounge. We look forward to your visit!
#stronger4longer #BAUMA25

Attention #Tsurumi fans and friends of excellent pumps! From now on you can also show the outside world which high-performance pumps your heart beats for. Discover great products online in our brand new fan shop that express your love for #stronger4longer: Jackets, shirts, caps and accessories like a cool #Stanley mug! Take a look right now - you're sure to find the ideal fan accessory for you in the Tsurumi fan shop:
https://zwineh-tw.myshopify.com
#stronger4longer

We would like to welcome a new member of our #Tsurumi KRS family: the KRS811! With an output of 11 kW and a discharge bore of 200 mm, it offers a maximum delivery rate of 5500 l/min and a maximum delivery head of 17.5 metres. The KRS811 joins the group of KRS pumps with its 4-pole motor with low speed - for even better durability on the construction site under harsh conditions. The design with top outlet and side discharge ensures efficient motor cooling even at low water levels.
Details on the KRS series and the new model can be found on our website - just click here. Interested? Then simply get in touch with us - we will be happy to advise you: sales@tsurumi.eu
#stronger4longer

Discover another giant in the #Tsurumi family: The GSZ10150 is the largest model in the GSZ series. With a motor output of 150 kW, it achieves a maximum capacity of a truly gigantic 18,000 l/min and a delivery head of 54.5 m. These impressive performance values are particularly in demand in #mining and #tunnelling, where very large quantities of water have to be moved as quickly as possible over a relatively high delivery head.
In addition to the cooling jacket, with which every #GSZ model is equipped, the GSZ10150 has a cooling pipe. This ensures highly efficient motor cooling even in applications with a low water level.
Want to know more? Please feel free to contact us - we will be happy to provide you with information: sales@tsurumi.eu
#stronger4longer

A technological highlight in over 100 years of #Tsurumi history is the development of the oil lifter in 1998, which is partly responsible for the legendary reliability and reliability of our units. Our engineers in Japan invented this component, which is positioned around the mechanical seal and ensures optimum lubrication of the upper seal faces. This works even if the lubricant is reduced to up to 1/3 of the nominal volume.
Pumps without oil lifters displace the lubricating oil to the outside. This quickly leads to bearing damage. In all Tsurumi pumps, the oil lifter ensures that the mechanical seals are permanently lubricated. This extends the service life of the mechanical seal. In addition, the combination of double inner mechanical seal and oil lifter prevents seal damage during dry running. Since then, even when a Tsurumi is aligned horizontally, the seal faces remain lubricated, which contributes to the longevity of the pump and ensures maximum performance when working in any position.
This video shows what makes the Tsurumi oil lifter so unique:
https://www.youtube.com/watch?v=wZ0Une6_MVc
#stronger4longer

At #Tsurumi, we attach great importance to products that enable our customers to pump even difficult-to-handle liquids. These include corrosive liquids, liquids at high temperatures and seawater.
A very special series for this is the Tsurumi LH-14 / LH-W-14 series made of stainless steel! It is now finally available from stock for customers in Europe.
The LH-14, like the LH-W-14 equipped with two impellers, is highly corrosion-resistant. All parts that come into contact with the medium are made of 316 stainless steel so that they can withstand extreme applications in the construction industry and in #mining.
The stainless steel LH is so tough that it would probably inspire respect even from famous fighting robots universe!
The specifications of the LH series can be found here on our website:
https://www.tsurumi.eu/products/drainage/lh-stainless-steel-475
If you are interested, we will be happy to advise you: sales@tsurumi.eu
#stronger4longer

Damaged cables are one of the main causes of pump failures. This is because capillary action can cause water to penetrate the cables, leading to insulation breakdowns, short circuits and costly repairs.
We at #Tsurumi have something to prevent this: our innovative anti-wicking cable entry system! This means that moisture can no longer penetrate, even with damaged cables. You benefit from minimal maintenance and maximum efficiency.
To see how the anti-wicking system is designed and how it works watch this video:
https://youtu.be/lnq_YORwVBw

We're thrilled to announce the launch of our brand-new website: https://www.tsurumi-connect.eu/ ! Dive into the world of cutting-edge IoT solutions for pumps and discover how you can take full control of your pumping systems like never before.
Explore all the details and join us on this innovative journey. Your pumps, your control, our technology. Let's make a splash together!
#TsurumiConnect #IoTSolutions #PumpControl #Innovation #TechRevolution

Exciting News!
We are thrilled to announce the launch of new features on our website! You can now access full technical datasheets directly from our site, which were previously only available on Spaix.
But that's not all! Our innovative Pumpfinder tool now displays the specified duty point on the datasheets when you download them. This makes it easier than ever to find the perfect pump for your needs!
Visit our website today to explore these new features and enhance your experience with us. #Innovation #TechUpdate #Pumpfinder #EngineeringExcellence

The process water of a plastic recycling plant naturally has a high proportion of plastics. This water must be collected and pumped by suitable pumps. Conventional shredding pumps repeatedly failed to perform this task. The solution for the customer was to switch to the hashtag#Tsurumi C series - one of the most reliable series in the market.
The 80C21.5 were able to pump the medium without any problems. A total of eight cutter pumps were installed in different basins to gradually remove the solids from the water so that it can be fed back into the recycling process.
All pumps are controlled by level sensors that keep the water in all containers at the same level, regardless of changes in the water inflow. By keeping the water level low, the pumps can collect more of the light solids that tend to accumulate on the water surface.
We have linked the specifications of the C series for you in the comment below this post.
hashtag#stronger4longer

We are very much looking forward to IFAT 2024, which starts on Monday, May 13 in Munich! The "World's Leading Trade Fair for Water, Sewage, Waste and Raw Materials Management" will run until May 17, and we will of course be there again with many exciting products!
At our stand 444 in hall B1, the focus will be on our innovation Tsurumi CZ, which is now also available in Europe: a submersible motor pump with cutting and shredding function, specially designed for pumping wastewater containing solids.
We will also show these versatile solutions:
- MMR submersible mixer: a 4kW unit with gearbox for a powerful mixing effect with a propeller thrust of 1165N
- Pump station "TSURUBOX", for example for domestic waste water that is collected and pumped into the sewer. The pumping station is equipped with a Tsurumi Cutter pump for blockage-free operation.
- Tsurumi Connect: We show you how you can control the pump digitally - for example, to clear a blockage that has occurred.
- LSC1.4S: We will be demonstrating on the stand how this residual water pump extracts water down to a water level of just 1 mm.
- 32TRN21.5 Submersible aerator
- POMA vortex pump with fiber-reinforced plastic housing and float
- 50UT2.75S Vortex sewage pump with wide passage
- 50SQ2-2.75 made of stainless steel
- 50GY21.1S macerator pump with high delivery head up to more than 60 m.
Of course, we are also dedicating our appearance to the 100th anniversary of Tsurumi. How? Let us surprise you and come and visit us at the Messe München!
#stronger4longer

From Austria and Slovenia to Finland, from Italy to Norway: In April, you can experience #Tsurumi live at the following five trade fairs in Europe:
April 10-13
Mawev Show, St. Pölten, Austria
April 12-13:
Mansen Mörinät, Tampere, Finland
April 18-20:
GIC, Piacenza, Italy
April 24-27
Vei og Anlegg, Lillestrøm, Norway
April 17-19
Megra, Gornja Radgona, Slovenia
Find the event closest to you. We look forward to your visit!

A first big order of Tsurumi Connect boxes had been programmed and configured for delivery in Norway. The designed system will provide maximum control of Tsurumi branded pumps as well as third manufacturer products. Together with Intec the Tsurumi Connect Team is solving the customer´s problem! Tsurumi Connect lets you digitize nearly all devices at your operation on site!

Several #Tsurumi pumps of different series were installed in the wastewater treatment plant of a large Spanish hotel. The pumps perform important tasks at the main stations of the treatment process there.
Following units were installed:
TRN - self-priming submersible aerators for #wastewater treatment.
FSP - wastewater pumps with floats for use at the water surface
Two 80TRN47.5 operate in the biological reactor, and additional TRN submersible aerators are installed in the aerobic sludge digester and primary degreaser. At the surface of the decanter and sludge digester, two 4-FSP2s ensure the removal of wastewater containing solids.
We have linked the specifications of the two series for you in the comments below this post.
#stronger4longer