Handling domestic sewage with long fibers, abrasive particles up to 5 mm, and various impurities is a common challenge for pump systems. Improper selection often leads to clogging, seal failure, and excessive energy costs.
Recently, our technical team received an inquiry requiring a cantilevered surface centrifugal pump set for dry, horizontal installation. The customer's key requirements were:
Operating flow rate: ≥ 80 m³/h
Operating head: ≥ 35 m
Pump efficiency: ≥ 65%
Shaft power P2: ≤ 20 kW
Unit energy consumption: ≤ 0.3 kWh/m³
Operating range: Flow 50–105 m³/h, Head 32–40 m, with the operating point at the center of the curve
Motor: 50 Hz, 3-380 V, rated power ≤ 22 kW, protection ≥ IP 54, insulation ≥ Class F
Assembly: Pump, motor, base, flexible coupling, protective cover, detachable cable, and AC frequency converter
Spare parts: 1 set of shaft seals + 1 set of housing gaskets
Quantity: 3 units
After careful evaluation, we proposed the 100ZW80-35-18.5 centrifugal pump – a model that perfectly matches the specified operating point while ensuring stable, energy-efficient performance.
| Parameter | Value |
|---|---|
| Medium | Water / sewage |
| Flow Rate | 80 m³/h |
| Head | 35 m |
| Power | 18.5 kW – 2P (AC380V, 50Hz, 3PH, Class F, IP55, YE3 motor) |
| Speed | 2900 rpm |
| Inlet/Outlet | DN100 (PN16) |
| Seal Type | Mechanical Seal |
| Pump Head Material | Cast Iron |
| Inverter | 18.5 kW backpack frequency converter |
| Piping Accessories | DN100 single pump set including pressure tank, check valve, pressure gauge, sensor, etc. |
| Packaging | Outlet wooden crate |
| Connection | Split type |
Precise operating point: Rated at 80 m³/h @ 35 m head, this pump sits at the center of the required performance diagram, ensuring high efficiency and stable operation.
Energy efficiency: With shaft power under 20 kW and unit consumption ≤ 0.3 kWh/m³, it helps reduce long-term operational costs.
Complete assembly: The unit comes with a common base, flexible coupling, protective cover, and detachable cable for easy installation and maintenance.
Frequency converter included: The built-in AC variable frequency drive allows speed adjustment, further optimizing energy use under varying load conditions.
Durable construction: Cast iron pump head, mechanical seal, and IP55/F-class motor ensure reliable performance in harsh sewage environments.
Ready-to-install: The package includes essential piping components (pressure tank, check valve, gauge, sensor) and wooden crate packaging for safe transport.
To minimize downtime, each unit is supplied with a spare parts package including one set of shaft seals and one set of housing gaskets – a practical consideration for routine maintenance.
If you have specific requirements for domestic sewage pumps, centrifugal pumps, industrial pumps, or chemical pumps, feel free to reach out.
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