Key Features & Advantages
- Stainless Steel Shaft: Constructed with a corrosion-resistant stainless steel shaft, providing enhanced durability and longevity in aggressive, abrasive sewage environments.
- Y2 National Standard Motor: Powered by high-efficiency, reliable three-phase Y2 series motors compliant with national standards, built for continuous, heavy-duty operation.
- High-Temperature Resistant Bearings: Features bearings rated for high-temperature operation, allowing the pump to handle variable fluid temperatures and the thermal stresses of extended running times, which extends service life.
- High-Temperature Mechanical Seals: Utilizes mechanical seals made with high-temperature-resistant materials. This ensures a reliable, leak-free seal when pumping fluids that may be warm or are in applications generating heat, preventing premature seal failure.
Model Number Instruction
Understanding the model code reveals the pump’s key specifications:
- ZW: Non-Clogging Self-Priming Sewage Pump
- First two digits (e.g., 40, 50, 65): Inlet/Outlet Nominal Diameter (mm)
- First Number after “ZW” (e.g., 8, 10, 15): Rated Flow (m³/h)
- Second Number after “ZW” (e.g., 15, 20, 30): Rated Head (m)
- The final number in the model name typically corresponds to the motor power (kW), as shown in the technical table.
Example: 40ZW8-15= Non-clogging self-priming sewage pump with 40mm ports, 8 m³/h flow, 15m head, and 1.5kW power.
Technical Specifications
| No. | Model | Voltage (V) | Rated Flow (m³/h) | Rated Head (m) | Self-Priming Height (m) | Speed (RPM) | Power (kW) | Inlet Dia. (mm) |
|---|---|---|---|---|---|---|---|---|
| 1 | 40ZW8-15 | 380 | 8 | 15 | 6 | 2900 | 1.5 | 40 |
| 2 | 50ZW10-20 | 380 | 10 | 20 | 6 | 2900 | 2.2 | 50 |
| 3 | 50ZW15-30 | 380 | 15 | 30 | 6 | 2900 | 3 | 50 |
| 4 | 65ZW20-20 | 380 | 20 | 20 | 6 | 2900 | 3 | 65 |
| 5 | 65ZW20-25 | 380 | 20 | 25 | 6 | 2900 | 4 | 65 |
| 6 | 65ZW30-18 | 380 | 30 | 18 | 6 | 2900 | 4 | 65 |
| 7 | 80ZW40-16 (4-Pole) | 380 | 40 | 16 | 6 | 1450 | 4 | 80 |
| 8 | 65ZW30-18 (4-Pole) | 380 | 30 | 18 | 6 | 1450 | 4 | 65 |
| 9 | 65ZW20-30 | 380 | 20 | 30 | 6 | 2900 | 5.5 | 65 |
| 10 | 80ZW65-25 | 380 | 65 | 25 | 6 | 2900 | 7.5 | 80 |
| 11 | 100ZW80-20 | 380 | 80 | 20 | 6 | 2900 | 7.5 | 100 |
| 12 | 100ZW100-15 (4-Pole) | 380 | 100 | 15 | 6 | 1450 | 7.5 | 100 |
| 13 | 65ZW40-50 | 380 | 40 | 50 | 6 | 2900 | 11 | 65 |
| 14 | 100ZW100-20 | 380 | 100 | 20 | 6 | 2900 | 11 | 100 |
| 15 | 80ZW65-55 | 380 | 65 | 55 | 6 | 2900 | 15 | 80 |
| 16 | 125ZW120-20 | 380 | 120 | 20 | 6 | 2900 | 15 | 125 |
| 17 | 150ZW180-14 (4-Pole) | 380 | 180 | 14 | 6 | 1450 | 15 | 150 |
| 18 | 100ZW100-35 | 380 | 100 | 35 | 6 | 2900 | 22 | 100 |
| 19 | 100ZW100-35 (4-Pole) | 380 | 100 | 35 | 6 | 1450 | 22 | 100 |
Applications
- Raw sewage lifting and transfer in municipal wastewater treatment plants and pumping stations.
- Handling industrial wastewater containing solids, fibers, and debris from food processing, paper mills, or slaughterhouses.
- Drainage of flooded areas containing mixed water and waste.
- Construction site dewatering where water contains mud, sand, and small debris.
- As a reliable standby or main pump in sewage and sludge handling systems.
Why Choose DONGTAO ZW Non-Clogging Self-Priming Sewage Pump Series?
- Superior Clog Resistance: The specially designed impeller and volute allow for the passage of large solids and stringy materials, minimizing downtime caused by blockages.
- Installation & Operational Convenience: Self-priming design allows for flexible installation above the liquid level, simplifying setup and maintenance compared to submersible pumps.
- Built for Severe Duty: The combination of a stainless steel shaft, high-temperature seals and bearings, and a rugged construction makes it suitable for the toughest sewage applications.
- Versatile Speed Options: Available in both standard 4-pole (~1450 RPM for higher flow/lower head) and 2-pole (~2900 RPM for higher head) configurations to match specific system requirements.
- Professional-Grade Reliability: Engineered for continuous, unattended operation in critical infrastructure, reducing operational risks and maintenance costs.
Contact Us for Your Challenging Wastewater Project
Selecting the right non-clogging pump is essential for system efficiency. Contact our technical sales team with your specific flow, head, solids size, and nature of wastewater. We will assist you in choosing the optimal ZW model from our full range and provide detailed support for your application.
