ZWE 50-22 – submersible sewage pump with cutting impeller
The IPRO ZWE 50-22 submersible pump is a professional unit with a cutting impeller,
designed for pumping raw sewage and liquids containing solid or
fibrous particles. Its high-quality hardened steel impeller effectively breaks down contaminants
at the pump inlet, allowing it to operate safely even when the pumped
medium is heavily contaminated.
Who it’s for
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Wastewater pumping station and treatment plant operators – the cutting impeller enables the pump to handle wastewater containing solid contaminants without the risk of clogging.
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Farms and livestock operations – the pump handles domestic wastewater, dirty water, and rainwater and surface water drainage.
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Construction and maintenance companies – the simple design and easy disassembly make the pump convenient for excavation dewatering and routine maintenance work.
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Irrigation system installers – the grinding system’s high resistance to abrasion and corrosion makes it suitable for extensive green space irrigation systems.
Applications
The ZWE 50-22 submersible pump is designed for raw sewage and liquids containing
solid or fibrous particles no longer than 80% of the pump outlet diameter.
It is suitable for raw water supply, drainage of dirty water and domestic wastewater,
irrigation systems and excavation dewatering.
Due to the design of its cutting impeller, the ZWE 50-22 pump is not intended for highly
corrosive media or media containing abrasive or corrosive particles. The ZWE 50-22 400V
submersible pump performs well wherever the pumped medium contains solid contaminants that
need to be broken down before pumping, such as in wastewater pumping stations, farms or
construction sites when draining excavations.
The pump is not a water treatment device – if using it for other purposes, we recommend ensuring appropriate preparation.
ZWE 50-22 features – description and technical data
The motor and pump casing, impeller, and oil chamber are made of ŻL200 gray cast iron, making the construction resistant to abrasion and impact typical of operation in heavily contaminated wastewater. The pump shaft and fasteners are made of stainless steel, providing corrosion resistance during prolonged contact with moisture and wastewater. The impeller and cutting plate are made of hardened steel, ensuring the grinding system is highly wear-resistant, even in aggressive environments.
The motor has class F insulation and is protected by thermal protection built into the stator winding. In addition, two independent moisture sensors – in the oil chamber and in the motor chamber – detect any water ingress before the drive fails. The unique design of the cutting plate, with grooves and a scraper, effectively removes shredded solids, preventing them from building up on the impeller.
- Pump type: submersible pump with cutting impeller
- Power supply: 3~400 V, 50 Hz
- Max. medium temperature: 40°C
- Max. liquid density: 1050 kg/m³
- Permissible pH range: 4–10
- Protection rating: IP68
- Insulation class: F
- Power cable: 10 m, with unterminated ends
- Motor protection: thermal protection built into the winding + moisture sensors in the oil chamber and motor
- Casing and impeller material: ŻL200 gray cast iron
- Pump shaft: stainless steel
- Impeller and cutting plate: hardened steel
- Mechanical seal: double, upper SiC/graphite, lower SiC/SiC
- Max. number of starts: 15/h
IPRO – 36-month (3-year) manufacturer's warranty. Dambat provides warranty and post-warranty service.
Dambat - a trusted manufacturer of pumps and hydrotechnical equipment with quality certifications.
Frequently asked questions (FAQ) - ZWE 50-22 submersible pump
What is the ZWE 50-22 pump designed for?
The IPRO ZWE 50-22 submersible pump is designed for raw wastewater and liquids containing solid or fibrous particles no longer than 80% of the pump outlet diameter. It is suitable for wastewater pumping stations, irrigation systems, and excavation dewatering.
What is the difference between the ZWE pump and the WE pump?
The ZWE pump is equipped with a hardened steel cutting impeller that shreds solid contaminants at the pump inlet, whereas the WE pump has a closed, two-channel impeller with no shredding components. This makes the ZWE suitable for wastewater containing more solid contaminants than the WE series.
Can the ZWE 50-22 pump operate continuously?
Yes, the pump is designed for continuous operation while fully submerged in liquid, allowing it to operate continuously in pumping stations without the need for regular breaks.
How is the pump motor protected against damage?
The motor is protected by thermal protection built into the stator winding and two independent moisture sensors - one in the oil chamber and one in the motor chamber - which detect any water ingress before the drive fails.
What is included with the ZWE 50-22?
With the pump, the package includes a coupling foot, a pump hook, and a guide rail bracket, allowing stationary installation in a pumping station without the need to purchase additional accessories.
Where can you buy the ZWE 50-22 submersible pump?
Dambat does not sell directly. The ZWE 50-22 pump is available from commercial partners, plumbing wholesalers, and authorized online distributors.
What warranty terms apply to the ZWE 50-22 pump?
IPRO - 36 months (3 years) of manufacturer’s warranty. Warranty and post-warranty service is provided by Dambat.
