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YW type under liquid sewage pump applies open impeller, effective and no blockage, stablereliability, no vibration and long service life. lt is suitable for sites requiring stain resistinganti-corrosion, oil resisting and higher temperature for motor is placed above water no need ofunderwater cable. lt is widely used in chemical industry, petroleum oil, metallurgy and civilconstruction and so on.
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The YW Series Under-liquid Sewage Pump is a specialized wastewater handling equipment featuring an innovative open impeller design, engineered to tackle sewage, wastewater, and liquids containing suspended solids without clogging. Its unique structure positions the above-water motor (eliminating the need for underwater cables) to avoid electrical hazards, while its anti-corrosion and oil-resistant properties make it suitable for harsh operating environments.
Widely adopted in chemical industry (handling chemical wastewater), petroleum processing (treating oil-contaminated water), metallurgy (managing industrial sludge), and civil construction (site drainage and sewage collection), this pump delivers reliable performance for wastewater collection, transportation, and treatment. It is also ideal for municipal sewage systems, food processing plants, and environmental protection projects.
Open Impeller Structure: Allows solids (e.g., small debris, sludge, and fibrous materials) to pass through freely, eliminating blockages and ensuring uninterrupted operation in sewage and wastewater transfer.
Large Flow Channel Design: The impeller’s widened flow channels reduce resistance and prevent accumulation of suspended particles, further enhancing anti-clogging performance.
Above-Water Motor Installation: The motor is mounted above the liquid surface, eliminating the risk of electrical short circuits from underwater cables and simplifying maintenance.
Anti-Corrosion & Oil-Resistant Materials: Wet parts are constructed with corrosion-resistant alloys (e.g., 304 stainless steel) and oil-resistant seals, enabling safe handling of chemical wastewater and oil-contaminated liquids.
High-Temperature Tolerance: The motor is rated for operating temperatures up to 120°C, making it suitable for high-temperature wastewater applications in petroleum refineries and chemical plants.
No Priming Required: The under-liquid design enables instant startup without manual priming, saving time in emergency drainage scenarios (e.g., flood control and basement water removal).
Low Vibration & Quiet Operation: Precision-balanced components and a rigid base reduce vibration and noise, ensuring compliance with industrial noise standards and improving workplace comfort.
Long Service Life: Wear-resistant impellers and sealed bearings minimize component degradation, extending the pump’s operational lifespan to 5–8 years with routine maintenance.
Parameter | Specification |
Capacity | 10–500 m³/h |
Head | 7–62 m |
Power Range | 0.75–75 kW |
Inlet/Outlet Sizes | 25–250 mm |
Operating Speed | 960–2950 r/min (adjustable based on load) |
Impeller Type | Open Impeller (no-clogging) |
Fluid Compatibility | Sewage, wastewater, chemical liquids, oil-contaminated water, liquids with suspended solids (≤50mm) |
Motor Protection Class | IP54 (standard), IP68 (optional for wet environments) |
Material of Construction | Cast iron (casing), 304/316 stainless steel (impeller, optional) |
The open impeller undergoes special wear-resistant coating treatment to withstand abrasive solids in wastewater. The pump’s shaft is made of high-strength steel, ensuring resistance to bending and corrosion, while seals are selected for long-term leak prevention in harsh fluids.
Each YW Series pump undergoes a 48-hour continuous operation test to validate performance stability. The motor is tested for insulation resistance and overload capacity, and the entire unit is inspected for leakage under working pressure. Additionally, the impeller’s anti-clogging performance is verified with simulated wastewater containing standard-sized solids.
The pump’s above-water motor design reduces the risk of water damage, while product-lubricated bearings eliminate the need for external lubrication, reducing maintenance requirements. All components comply with industrial wastewater handling standards, ensuring reliable operation in continuous-duty applications such as municipal sewage treatment plants and industrial wastewater facilities.
The open impeller design allows the pump to handle solids up to 50mm in diameter (depending on the pump size), making it suitable for municipal sewage, construction site drainage, and industrial wastewater with suspended debris.
Yes—standard models feature a weather-resistant motor housing, and optional IP68 motor protection is available for extreme outdoor or high-humidity environments (e.g., coastal areas or construction sites exposed to rain).
Routine maintenance includes cleaning the open impeller (quarterly, or more frequently for high-solids wastewater), inspecting seals for leakage (monthly), and checking motor wiring (semi-annually). The pump’s simplified design ensures maintenance can be completed quickly without specialized tools.
Solve your wastewater handling challenges with the YW Series Under-liquid Sewage Pump today:
Download the WQ-YW-ZW Brochure to view technical diagrams, performance data, and case studies from chemical, petroleum, and construction industries.
Add to Basket for standard models (in-stock for sizes 25–150mm) with a 3-year warranty on motor and core components.
Inquire About Customization to request high-temperature, corrosion-resistant, or high-solids versions—our team will provide tailored solutions to meet your project needs.
