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The Grand Paris Express is fundamentally reshaping transport infrastructure across the Île-de-France region. On several of the lines currently under construction, Tsurumi France is playing an important supporting role — including on Metro Line 18, where tunnelling work is steadily advancing.
As the tunnel extends further away from the water treatment point, the challenge of transporting accumulating water increases significantly. Longer distances mean higher pressure losses in the drainage pipes — eventually exceeding the capacity of the pumps initially installed. To maintain continuous water flow to the treatment plant, the construction consortium needed an effective way to overcome these increasing hydraulic demands.
A Booster Solution for Long-Distance Pumping
The site management opted for a booster pump configuration, installing Tsurumi submersible pumps in series and outside the water — a non-standard setup that nevertheless works efficiently thanks to the robust design of Tsurumi pumps.
A key advantage: Tsurumi's original oil-lifter technology, which ensures consistent lubrication and cooling of the mechanical seal, even in demanding or unconventional operating conditions. This eliminates the risk of overheating and ensures reliable long-term performance.
KTZ 422: Power, Pressure and Reliability
To meet the pressure and distance requirements on Line 18, the consortium selected the Tsurumi KTZ 422. This 22 kW powerhouse is one of Tsurumi's most trusted models and is known for:
excellent versatility across applications
the ability to generate high discharge pressure
outstanding durability in abrasive and demanding environments
stable performance even in booster configurations
If you would like to learn more about the KTZ 422 or need support in choosing the right pump for your project, simply send us an email at sales@tsurumi.eu — our team is happy to help.
#stronger4longer #tunnelling #GrandParisExpress #infrastructure #pumpsolutions

#stronger4longer #tunnelling #GrandParisExpress #infrastructure #pumpsolutions

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

#stronger4longer #tunnelling #undergroundconstruction #engineering #civilengineering #infrastructure #LyonTurinTunnel #TsurumiPumps

Single-phase pumps from Tsurumi are the ideal choice for smaller sites, temporary installations, and mobile applications – anywhere a three-phase power supply is not available. Operating on a standard single-phase connection, they are easy to use while delivering strong performance for a wide range of dewatering tasks.
Each unit combines motor and impeller in a compact, highly efficient housing. Whether you need to drain a construction pit, empty a flooded basement, or control groundwater levels, our single-phase pumps offer the perfect balance between mobility and power.
The product range includes models equipped with electrode sensors as well as versions featuring float switches, available for both automatic and manual operation.
Electrode Sensor Pumps – Tsurumi LB-A Series:
Automatic start/stop based on water level
Ideal for unattended operation in sumps and pits
Float Switch Pumps – HSZ, PNA, PNW, PUA, PUW, TMA and UTZ Series:
Proven reliability for drainage and dewatering tasks
Robust, straightforward design for easy maintenance
All Tsurumi single-phase pumps are built to operate reliably for many years—especially when installed, used, and maintained correctly. By avoiding common issues such as dry running, overloading, or neglecting routine inspections, users can significantly extend the pump's service life and secure long-term performance.
Would you like to learn more about our single-phase pump range?
Feel free to contact us at sales@tsurumi.eu
#Tsurumi #SinglePhasePumps #PumpTechnology #WaterManagement #ConstructionEquipment #DrainageSolutions #Efficiency #Stronger4Longer

#Tsurumi #SinglePhasePumps #PumpTechnology #WaterManagement #ConstructionEquipment #DrainageSolutions #Efficiency #Stronger4Longer

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 face of increasingly frequent extreme weather events, reliable pump systems play a crucial role in flood protection and water management. From basements and lift shafts to low-lying industrial facilities, Tsurumi pumps ensure that floodwater can be removed quickly and efficiently — helping to prevent contamination, protect equipment, and minimise damage.
In Europe, the risk of flooding is particularly high during the rainy autumn months, especially in coastal regions, low-lying areas, and places with outdated drainage infrastructure. Storm surges and heavy rainfall events — both intensified by the effects of climate change — can easily overwhelm local systems and cause significant operational and economic disruption.
During such situations, Tsurumi pumps have proven to be indispensable. Their reliability and performance enable continuous operation of facilities, even under challenging weather conditions. The following product types are particularly effective in flood response:
Submersible pumps
Operate underwater and are ideal for handling wastewater containing solids and floodwater.
Shallow suction pumps (puddle suckers)
Compact and portable units designed to remove even small amounts of water quickly and effectively.
High-performance drainage pumps
Built for heavy-duty tasks, capable of moving large volumes of water efficiently and reliably.
These robust systems form an important part of flood resilience strategies across Europe, ensuring that critical infrastructures remain functional when it matters most.
For more information about Tsurumi's high-performance pump solutions for flood protection and drainage, please contact: sales@tsurumi.eu
#TsurumiPumps #FloodProtection #WaterManagement #DrainageSolutions #ClimateResilience #EngineeringSolutions #InfrastructureProtection #SubmersiblePump #IndustrialPumps #Sustainability #Stronger4Longer

#TsurumiPumps #FloodProtection #WaterManagement #DrainageSolutions #ClimateResilience #EngineeringSolutions #InfrastructureProtection #SubmersiblePump #IndustrialPumps #Sustainability #Stronger4Longer