What Is The Difference Between Sewage Submersible Pump And Clean Water Submersible Pump?

Dec 22, 2025

Submersible pumps are a large category of water pumps, which are easy to install and use, widely used, and important equipment for conveying and discharging. The characteristics of the installation and transportation medium of submersible pumps can be divided into clean water submersible electric pumps and sewage submersible pumps (usually referred to as submersible sewage pumps). When choosing a submersible pump, we must figure out which submersible pump is better.

Characteristics of sewage submersible pump products:

 

1. Adopting a single or double blade impeller structure greatly improves the ability of pollutants to pass through, effectively passing through 5 times the fiber material of the pump diameter and solid particles with a diameter of about 50% of the pump diameter.
2. The mechanical seal adopts a new type of hard and corrosion-resistant titanium tungsten material, which can ensure the safe and continuous operation of the pump for more than 8000 hours.
3. The overall structure is compact, the volume is small, the noise is low, the energy-saving effect is obvious, the maintenance is convenient, and there is no need to build a pump room. It can work underwater, greatly reducing the project cost.
4. The pump is equipped with a high-precision anti-interference water leakage detection sensor in the sealed oil chamber, and a thermal sensor is embedded in the stator winding to automatically protect the water pump motor. (Dosing device)
5. The sewage submersible pump can be equipped with a fully automatic control cabinet according to user needs, which automatically protects the pump from water leakage, leakage overload, and overheating, improving the safety and reliability of the product
6. The float switch can automatically control the start and stop of the pump according to the required liquid level changes, without the need for special supervision, making it extremely convenient to use.
7. A dual rail automatic coupling installation system can be equipped according to user needs, which brings greater convenience to installation and maintenance, and people do not have to enter the sewage pit for this.
7. It can be used within the full head without overloading the motor.
There are two different installation methods, fixed automatic coupling installation system and mobile free installation system.

Characteristics of water submersible pump:

1. The motor and water pump are integrated and operate underwater, ensuring safety and reliability.
2. There are no special requirements for well pipes and lifting pipes (i.e. steel pipe wells, ash pipe wells, soil wells, etc. can all be used; under pressure permission, steel pipes, rubber hoses, plastic pipes, etc. can be used as lifting pipes).
3. Easy to install, use, and maintain, with a small footprint and no need to build a pump room.
4. Simple structure, saving raw materials.
5. The conveying medium should not contain particle impurities.
Simply explain to users that water pumps cannot be used for sewage discharge because their impeller structures are different. On the contrary, sewage pumps can be used to discharge clean water, but with lower efficiency. The main difference between sewage submersible pumps is the impeller. Clean water pumps have closed impellers, while sewage pumps have open impellers to prevent blockages. It is necessary for users to choose suitable water pumps according to their actual needs for conveying media.