2026-07-30
A customer in Congo required a batch of stainless steel submersible pumps with a rated flow of 180 m³/h and a rated head of 136 meters. Based on the confirmed duty parameters, the 250QJH180-136-125kW multistage submersible pump was configured for the project.
Each pump is equipped with a 125 kW motor designed for a 380 V, 50 Hz power supply. SS316 stainless steel was specified as the pump material. The pumps completed the scheduled testing process, and the available test records were reported as satisfactory.
The customer’s final application, installation depth, pipeline arrangement and liquid composition were not disclosed. Therefore, this case focuses on the confirmed technical configuration and testing status without making assumptions about the operating environment or installation results.
The confirmed project requirements included:
The combination of substantial flow and high discharge head requires a multistage pump configuration. In this type of pump, multiple impeller stages work together to generate the required pressure for lifting or transferring water.
The selected configuration was the 250QJH180-136-125kW stainless steel submersible pump.
Its confirmed specifications are:
The electrical parameters were configured according to the confirmed 380 V/50 Hz site power supply. Before installation, the customer should verify the available voltage, phase, cable length, starting method and control-panel configuration.
SS316 stainless steel was specified for the pump construction. This material offers better corrosion resistance than standard cast iron in many water-handling environments.
However, SS316 is not automatically suitable for every corrosive liquid or seawater condition. Final material selection should consider chloride concentration, pH value, temperature, solid content and operating duration.
Because the liquid composition for this project was not provided, this case does not claim that SS316 was selected for seawater or another specific corrosive medium. Projects involving high chloride concentrations may require a comparison between SS316, SS316L, duplex 2205 and super duplex 2507.
The batch underwent the scheduled testing process before delivery preparation. According to the information provided, the test records were satisfactory.
No measured efficiency, current, vibration, noise or power-consumption data were supplied for publication. Therefore, no additional test values are stated or estimated in this case.
For similar high-power submersible pump projects, the technical verification process should confirm:
The 250QJH180-136-125kW configuration met the confirmed project parameters of 180 m³/h flow, 136 m head, 125 kW power and 380 V/50 Hz electrical supply. The scheduled testing process was completed, with satisfactory test records reported.
Since no installation or operating feedback has been provided, this case does not claim that the pumps have been commissioned or placed into service. A separate hydraulic and material review is required before the same model is recommended for another project.
