Skip to content 
Looking for reliable wastewater drainage? Our WQ submersible sewage pumps feature a non-clog double-channel impeller and tungsten carbide seals for heavy-duty municipal and industrial applications.
When dealing with raw sewage, industrial effluent, or heavy sludge, pump failure isn’t just an inconvenience—it means costly downtime and maintenance hazards. The WQ submersible sewage pump (also known as the QW type) is specifically engineered to solve the most common problem in wastewater management: clogging.
Built with heavy-duty cast iron and designed to operate fully submerged, the WQ series handles solid grains, long fibers, and heavily polluted water without choking.
Why the WQ Series Outperforms Standard Drainage Pumps
B2B buyers and municipal engineers specify the WQ series because of its internal architecture. Here is exactly what makes it durable:
-
Non-Clog Double-Channel Impeller: Unlike standard water pumps, the WQ series features a wide flow channel. This allows large solids and long fibrous materials to pass through easily, drastically reducing the risk of jamming or twisting.
-
Tungsten Carbide Mechanical Seals: We use in-series double mechanical seals made from wear-resisting tungsten carbide. This prevents abrasive materials from damaging the motor, ensuring the pump can run continuously and safely for over 8,000 hours.
-
Built-in Safety Sensors: For motors above 11kW, the oil chamber is equipped with a water leakage probe. If the mechanical seal is compromised, the sensor instantly alerts the control box to shut down the pump, preventing motor burnout.
-
Auto-Coupling Installation System: Maintenance doesn’t require entering the sewage pit. The automatic coupling system allows the pump to easily slide down a guide rail directly into the base connection, making installation and extraction safe and fast.
Primary Applications
The WQ submersible sewage pump is highly versatile and operates in extreme conditions (media temperature up to 40°C, pH values between 5-9). It is the standard choice for:
-
Municipal Works: Urban sewage treatment plants, lift stations, and rainwater drainage.
-
Industrial Facilities: Discharging polluted wastewater from chemical plants, mining sites, and paper mills.
-
Commercial & Residential: Hotel wastewater emissions, hospital sewage systems, and deep basement raw sewage drainage.
General Technical Specifications
(Note: The exact performance curve depends on the specific model. Below is the standard operating range for our WQ series.)
| Specification | Operating Range |
| Flow Rate (Capacity) | 2 m³/h to 10,000 m³/h |
| Head (Lift) | 3.5 m to 80 m |
| Motor Power | 0.37 kW to 355 kW |
| Operating Voltage | 380V / 50Hz (Customizable for 60Hz or other phases) |
| Material Options | Cast Iron (Standard), Stainless Steel (Available for corrosive media) |
| Speed | 740, 980, 1450, 2900 r/min |
Get a Custom Quote for Your Pumping Station
Selecting the right impeller size and motor power is critical to your system’s efficiency. Whether you need a low-head pump for a residential basement or a high-capacity unit for municipal infrastructure, our engineers are ready to help you match the exact WQ model to your requirements.
Contact our technical team today with your required flow rate and head, and we will provide a detailed performance curve and pricing within 24 hours.
