Product Overview
ZW/ZWP/ZWPB/ZWB Non-Clogging Self-Priming Sewage Pump is a self-priming pump designed for handling sewage and wastewater, featuring non-clog hydraulics that allow for efficient solids transfer.
It addresses the challenge of transferring waste with fibers, solids, and other difficult materials, ensuring uninterrupted operation in demanding conditions.
Ideal for use in sewage treatment plants, industrial wastewater systems, and municipal waste management.
Model Designation
Applications
• Sewage treatment plants
• Municipal waste management
• Industrial wastewater systems
• Stormwater pumping and drainage systems
• Agricultural wastewater systems
Engineering Advantages
• Self-priming capability: No foot valve needed, enabling quick and reliable start-up even after being idle.
• Non-clogging hydraulics: Capable of handling solids, fibers, and debris without clogging, ensuring continuous operation.
• Robust construction: Made from high-quality corrosion-resistant materials for durability in harsh environments.
• Easy maintenance design: Compact and service-friendly, making it easy to perform regular maintenance and repairs.
System Components
The ZW/ZWP/ZWPB/ZWB Non-Clogging Self-Priming Sewage Pump consists of the following main components:
• Pump casing
• Impeller
• Self-priming chamber
• Gas-liquid separation mechanism
• Mechanical seals and bearings
• Pressure relief valve
Technical Parameters
Service Conditions
• Fluid Type: Sewage, industrial wastewater, stormwater
• Operating Temperature: ≤ 60°C
Operating Conditions
- Flow Rate: 8 – 800 m³/h
- Head: 12 – 80 m
- Power Range: 2.2 – 55 kW
- Speed: 1450 / 2900 rpm
- Liquid Temperature: ≤ 60°C
- Working Pressure: ≤ 1.0 MPa
Detailed parameter tables are provided below.
Specifications & Installation
Outline Drawing
Performance Data
| NO. | Name | Serial Number | Name |
| 1 | Inlet Connection | 9 | Impeller |
| 2 | Inlet Flange | 10 | Mechanical Seal |
| 3 | Inlet Valve Seat | 11 | Water Stop Ring |
| 4 | Water Supply Valve | 12 | Bearing Seat |
| 5 | Outlet Connection | 13 | Pump Shaft |
| 6 | Pump Body | 14 | Bearing Cover |
| 7 | Gas-Liquid Separation Pipe | 15 | Bottom Cover Plate |
| 8 | Rear Cover | 16 | Bolts |
Performance Parameters
| Model | Flow Rate (m³/h) | Head (m) | Motor Power (kW) | Speed (rpm) | Efficiency (%) | NPSHr (m) |
| (m3/h) | (M) | (kw) | (r/min) | (%) | (M) | |
| ZW25-8-15 | 8 | 15 | 2.2 | 2900 | 45 | 2 |
| ZW32-10-20 | 10 | 20 | 2.2 | 2900 | 45 | 2.5 |
| ZW40-20-15 | 20 | 15 | 2.2 | 2900 | 45 | 2.5 |
| ZW40-15-30 | 15 | 30 | 3 | 2900 | 48 | 2.5 |
| ZW50-10-20 | 10 | 20 | 2.2 | 2900 | 45 | 2.5 |
| ZW50-20-15 | 20 | 15 | 2.2 | 2900 | 45 | 2.5 |
| ZW50-18-22 | 18 | 22 | 3 | 2900 | 48 | 2.5 |
| ZW50-15-30 | 15 | 30 | 3 | 2900 | 48 | 2.5 |
| ZW65-30-18 | 30 | 18 | 4 | 2900 | 45 | 2.5 |
| ZW65-20-30 | 20 | 30 | 5.5 | 2900 | 45 | 2.5 |
| ZW65-25-40 | 25 | 40 | 7.5 | 2900 | 50 | 3 |
| ZW80-40-16 | 40 | 16 | 4 | 1450 | 50 | 3 |
| ZW80-65-25 | 65 | 25 | 7.5 | 2900 | 50 | 3 |
| ZW80-80-35 | 80 | 35 | 15 | 2900 | 45 | 3 |
| ZW80-50-60 | 50 | 60 | 22 | 2900 | 55 | 3 |
| ZW80-80-45 | 80 | 45 | 22 | 2900 | 55 | 3 |
| Model | Flow Rate (m³/h) | Head (m) | Motor Power (kW) | Speed (rpm) | Efficiency (%) | NPSHr (m) |
| (m3/h) | (M) | (kw) | (r/min) | (%) | (M) | |
| ZW100-80-20 | 80 | 20 | 7.5 | 1450 | 53 | 4 |
| ZW100-100-15 | 100 | 15 | 7.5 | 1450 | 50 | 4 |
| ZW100-100-20 | 100 | 20 | 11 | 1450 | 53 | 4 |
| ZW100-100-30 | 100 | 30 | 22 | 2900 | 53 | 4 |
| ZW100-80-45 | 80 | 45 | 30 | 2900 | 55 | 4 |
| ZW100-80-60 | 80 | 60 | 37 | 290 | 53 | 4 |
| ZW100-80-80 | 80 | 80 | 45 | 2900 | 50 | 4 |
| ZW125-120-20 | 120 | 20 | 15 | 1450 | 55 | 4.5 |
| ZW150-200-15 | 200 | 15 | 15 | 1450 | 60 | 5 |
| ZW150-200-20 | 200 | 20 | 22 | 1450 | 60 | 5 |
| ZW150-200-28 | 200 | 28 | 30 | 1450 | 65 | 5 |
| ZW150-400-25 | 400 | 25 | 55 | 1450 | 45 | 5 |
| ZW150-180-40 | 180 | 40 | 55 | 1450 | 65 | 5 |
| ZW200-280-12 | 280 | 12 | 22 | 1450 | 62 | 5 |
| ZW200-300-18 | 300 | 18 | 37 | 1450 | 59 | 5 |
| ZW200-300-25 | 300 | 25 | 45 | 1450 | 55 | 5 |
| ZW200-280-28 | 280 | 28 | 55 | 1450 | 61 | 5 |
| ZW250-400-22 | 400 | 22 | 55 | 1450 | 65 | 5 |
| ZW300-800-14 | 800 | 14 | 55 | 1450 | 61 | 5 |
How to Select a Pump Model
• Determine the required flow rate based on the volume of sewage or wastewater to be transferred.
• Select the appropriate pump head based on system pressure and vertical lifting requirements.
• Ensure compatibility with the type of waste (e.g., solids, fibers, or chemical content) being transferred.
• Consider environmental factors such as temperature and corrosive conditions when selecting the pump.
Engineering Notes
• Ensure proper priming before starting the pump to avoid dry running and damage.
• Monitor the pressure relief valve for proper operation during pump start-up and operation.
• Inspect seals and bearings regularly for wear and tear, replacing components as needed.
• Clean and inspect the pump casing regularly to prevent blockages from debris and solids.
Compliance & Quality Assurance
• Factory testing to ensure the pump operates within the designed parameters for flow and pressure.
• Material traceability for all wetted components to ensure the use of high-quality, corrosion-resistant materials.
• Hydraulic performance testing to confirm pump efficiency and reliability under various conditions.
• Third-party inspections available to verify quality standards and performance.
Safety Notice
• Do not operate under dry running conditions to avoid damaging the pump’s mechanical seals.
• Ensure proper suction priming before starting the pump to prevent cavitation.
• Disconnect power before performing any maintenance or repairs.
• Regularly inspect seals for wear and tear to maintain efficiency and prevent leaks.
OEM & Custom
This pump series supports engineered configuration and duty-based matching.
Available options include:
• Motor voltage & frequency
• Mechanical seal type and configuration
• Wetted parts material selection
• Surface coating and corrosion protection
FAQs
Q: What is the maximum allowable viscosity for the pump?
A: The pump is suitable for liquids with a maximum viscosity of 100 cP.
Q: Can this pump operate under variable flow conditions?
A: Yes, the pump is designed to operate efficiently even under fluctuating flow and pressure conditions.
Q: What materials are used for the wetted components?
A: The wetted components are made from high-quality cast iron or stainless steel for durability.
Q: How often should the pump be maintained?
A: Regular maintenance is recommended every 6 months, including seal inspection and filter cleaning.
Q: What is the maximum working pressure of the pump?
A: The maximum working pressure is 1.0 MPa.