| Parameter | Specification |
| Product Name | WLT Large Drainage Pump |
| Pump Type | High-flow submersible drainage pump |
| Flow Rate | 120–510 m³/h |
| Head Range | 3–6 m |
| Discharge Diameter | DN150–DN300 |
| Motor Protection Rating | IP68 |
| Impeller Material | High-grade bronze alloy |
| Installation Type | Submerged installation |
| Hydraulic Characteristic | High flow and low head |
| Pumped Medium | Clean water, irrigation water, aquaculture water and drainage water |
| Main Applications | Aquaculture, agricultural irrigation and floodwater drainage |
Detailed motor power, operating speed, dimensions and cable configuration depend on the selected pump model and duty point.
The WLT pump is designed to move large volumes of water efficiently.
With a flow range of 120 to 510 m³/h, it is suitable for rapid water exchange, irrigation-water delivery and emergency drainage applications.
The pump provides a head range of 3 to 6 meters.
It is intended for systems that require high flow rather than high discharge pressure, such as pond circulation, field irrigation, channel transfer and drainage of flooded low-lying areas.
The motor enclosure complies with the IP68 protection rating, providing reliable protection for submerged operation.
This protection level helps prevent water and dust from entering the motor enclosure under the specified operating conditions.
Correct cable sealing, installation depth and operating procedures must be maintained to preserve the waterproof performance of the pump.
The impeller is manufactured from a selected high-grade bronze alloy.
Bronze is one of the premium copper-based materials used for marine and water-handling equipment. It combines good mechanical strength, corrosion resistance and wear resistance.
The bronze-alloy impeller offers excellent resistance to seawater and saline-water corrosion compared with many standard ferrous materials.
This makes the WLT pump suitable for fish farms, coastal aquaculture facilities, brackish-water systems and other environments where salt content may accelerate corrosion.
The bronze impeller provides good resistance to abrasive wear caused by small amounts of sand and soil suspended in the water.
Its wear rate is relatively low in suitable sandy-water conditions, helping extend impeller service life and maintain stable hydraulic performance.
The pump is not intended for transporting heavy slurry or water containing large quantities of highly abrasive solids.
The pump is designed to be relatively lightweight for its flow capacity.
The reduced weight makes transportation, lifting, installation and relocation more convenient, especially in agricultural fields, fish farms and temporary drainage projects.
The pump can be placed directly into the water and connected to the discharge pipe.
Its submersible structure eliminates the need for long suction pipelines and complicated priming procedures.
The practical structure provides convenient access for inspection and maintenance.
The pump can be removed from the installation point for servicing without requiring extensive disassembly of the surrounding water system.
Because the pump operates underwater, it occupies minimal surface space and does not require a large pump house.
This is particularly useful in fish ponds, irrigation channels and low-lying drainage areas where installation space may be limited.
The WLT Large Drainage Pump is suitable for water intake, water exchange and drainage in fish ponds, shrimp farms and other aquaculture facilities.
Its high flow capacity allows large quantities of water to be transferred quickly, supporting pond filling, circulation and water-level management.
The bronze impeller provides improved resistance in freshwater, brackish-water and certain coastal aquaculture environments.
The pump can be used to transfer irrigation water from rivers, canals, reservoirs, ponds and storage basins to agricultural fields.
It is suitable for applications where large-volume water delivery is required over a low elevation difference.
Typical uses include:
The WLT pump can rapidly remove accumulated water from low-lying farmland, construction areas, roads and residential zones.
Its high flow capacity makes it suitable for locations where water must be discharged quickly to reduce flooding and waterlogging.
The pump can be used for temporary floodwater drainage after heavy rainfall, storm events or rising water levels.
Its lightweight construction and simple installation allow it to be deployed quickly in emergency drainage operations.
The pump can transfer water between ponds, reservoirs, channels and storage basins.
It is suitable for water-level adjustment, reservoir emptying, pond maintenance and seasonal water-management projects.
The bronze impeller provides improved resistance to seawater corrosion, making the pump suitable for selected coastal drainage, aquaculture and brackish-water transfer applications.
The compatibility of all wetted components should be confirmed according to the actual salinity and water composition.
The WLT Large Drainage Pump is mainly suitable for transporting:
The pump should not be used for transferring:
A protective screen should be installed when the water may contain large debris, plants or other materials that could obstruct the impeller.
The impeller is one of the most important components of a drainage pump because it transfers energy from the motor to the water.
The WLT pump uses a high-grade bronze-alloy impeller to provide a balance of corrosion resistance, wear resistance and hydraulic reliability.
Its main advantages include:
The actual service life depends on the water composition, sand content, operating hours and maintenance conditions.
The WLT pump is specifically designed for applications requiring a large flow rate at a relatively low discharge head.
A low-head drainage pump is suitable when:
Typical examples include draining a flooded field, transferring water between nearby ponds or supplying a large irrigation channel.
For applications requiring long-distance transportation or high-elevation lifting, a higher-head pump should be selected.
The IP68 rating indicates that the motor enclosure is designed to prevent dust entry and withstand continuous immersion under the conditions specified for the pump.
This design provides several benefits:
The pump must still be installed and operated according to the specified maximum immersion depth, cable requirements and electrical-protection instructions.
Damage to the cable, cable entry or sealing system may affect the waterproof protection.
To select the correct WLT Large Drainage Pump, please provide the following operating information:
The pump should be installed in a position that provides sufficient water depth for stable submerged operation.
It should not be placed directly on soft mud, loose sand or the bottom of a pond where sediment may be drawn into the pump.
A support base, platform or suspension system should be used when necessary.
The discharge pipe or hose should match the selected outlet diameter and should be arranged with as few unnecessary bends as possible.
The pump must be lifted using the designated lifting point. It should never be lifted or suspended by the power cable.
The electrical cable should be protected from sharp objects, excessive pulling and mechanical damage.
A protective inlet screen should be used where leaves, weeds, plastic, stones or other debris may enter the pump.
For permanent installations, the discharge pipeline should be independently supported so that its weight is not transferred to the pump.
The pump should be connected to a properly designed control panel.
Recommended electrical protections include:
All electrical installation work should be performed by qualified personnel according to local regulations.
Regular inspection helps maintain stable pump performance and extend service life.
Recommended checks include:
After operation in seawater or water containing significant salt, the pump should be flushed with clean freshwater when practical.
Any sediment, weeds or debris around the inlet should be removed regularly to prevent reduced flow and motor overload.
The WLT Large Drainage Pump combines high flow capacity, IP68 waterproof protection, a lightweight structure and convenient submerged installation.
Its flow range of 120 to 510 m³/h makes it suitable for rapid drainage and large-volume water transfer, while the 3-to-6-meter head range is optimized for low-lift applications.
The high-grade bronze impeller provides excellent seawater-corrosion resistance and good resistance to abrasion caused by sand and soil.
Its compact construction simplifies transportation and installation, while the practical design supports convenient inspection and maintenance.
The WLT series is a reliable solution for aquaculture, agricultural irrigation, pond-water transfer and floodwater removal in low-lying areas.
Please send us your required flow rate, lifting height, discharge diameter, pipeline length, water type, sand content, power supply and installation conditions.
Our technical team will recommend a suitable WLT Large Drainage Pump and provide detailed performance data, dimensions, motor configuration, cable options and quotation.
WLT Large Drainage Pump — A lightweight, high-flow and corrosion-resistant solution for aquaculture, irrigation and floodwater removal.
