Tsurumi Pumps

A submersible water pump is a pump designed to work while fully submerged in water. The motor is sealed inside a waterproof casing, which prevents water from entering and damaging the internal components.

You place the pump directly into the water you need to remove, such as an excavation, trench, basement or sump. The pump then pushes the water to the surface through a discharge hose. Because it sits in the water, it does not need priming like a surface pump, which makes it simple to use on site.

Submersible pumps are commonly used for site dewatering, flood control, groundwater management and general drainage in construction and industrial environments.

Most construction-grade submersible pumps are designed to run continuously, provided you use them within their rated limits. In many applications, they can operate 24 hours a day.

Continuous operation is possible if the pump remains properly submerged, receives a stable power supply and is correctly sized for the job. If the pump runs dry, it can overheat and damage the seals or motor. Regular checks are essential on longer projects to ensure the intake is not blocked and water levels remain adequate.

Always confirm the duty rating from the manufacturer before committing to round-the-clock operation.

There is no single “best” pump for every project. The correct choice depends on the type of water, required flow rate and discharge height.

For clean or lightly contaminated water, a standard dewatering pump is suitable. If the water contains sand or abrasive material, you need a pump with wear-resistant components. For heavier solids or sludge, a drainage or solids-handling pump is more appropriate.

On construction and industrial sites, durability matters. You should look for strong casing materials, reliable mechanical seals and built-in motor protection. The best pump is the one correctly matched to your site conditions.

Tsurumi pumps are widely used in construction and civil engineering and are generally regarded as reliable when specified correctly. They are known for durable construction, good seal design and consistent performance in demanding environments.

Like any pump, performance depends on correct sizing and application. If the pump is undersized or used outside its intended range, it will not perform as expected. When selected correctly and maintained properly, they are considered dependable for both short-term and long-term dewatering.

Reliability is influenced more by correct specification and maintenance than by brand alone. Established manufacturers with proven track records and strong parts support, such as Tsurumi, tend to offer more dependable long-term performance.

When assessing reliability, consider build quality, motor protection design, availability of spare parts and access to service support. A pump backed by local support and readily available components is often more practical than a lower-cost alternative with limited backup.

The most reliable pump for your site is one that is correctly sized, properly installed and maintained to the manufacturer’s guidelines.

Start by identifying your required flow rate and total head. Total head includes the vertical lift plus any friction losses through the hose or pipework. You also need to understand the type of water you are dealing with, whether it is clean, sandy, silty or contains larger solids.

Next, confirm your available power supply and expected runtime. A deep excavation may require a high head pump, while surface water removal may prioritise flow rate over lift. In some cases, using two smaller pumps provides better resilience than relying on one larger unit.

If you can provide site depth, discharge distance and water conditions, the pump can be sized accurately to ensure efficient and reliable operation.