WQR High temperature wastewater lifting pump

A rugged high-temperature submersible sewage lifting pump designed for continuous duty in applications that handle hot liquids containing solids, fibers and sediment. Engineered for industrial and institutional settings — such as bathhouses, district heating systems, geothermal power operations and underground hot-water extraction — this pump combines high-temperature materials, reliable sealing and an energy-efficient hydraulic design to move contaminated hot wastewater without a dedicated pump room.

Key features

• Mechanical seal with silicon-carbide alloy faces for durable, continuous operation under high temperatures.
• Advanced hydraulic profile that reduces required motor power and improves energy efficiency across the operating range.
• Compact, transportable construction; simple installation with no need for a separate pump room, lowering project costs.
• Automatic water-level control for unattended start/stop operation.
• Integrated electrical protection and monitoring functions (leakage detection, phase-loss protection, overload protection and reduced-voltage starting).
• Compatible with an automatic coupling device to simplify installation and maintenance.
• Agitation/mixing device located at the inlet to stir and lift settled silt so solids are discharged with the liquid.

Performance and technical highlights

• Discharge diameter: 25–200 mm
• Flow range: 10–200 m3/h
• Head (lift): 5–60 m
• Motor power: 0.75–15 kW
• Solids handling (max particle diameter): 15–35 mm
• High-temperature motor construction: Grade H insulation, high-temperature copper winding and high-temperature resistant insulating paint
• High-temperature components: cables, sealing rings, mechanical seal and high-temperature bearings (NSK specified in source) rated for operation up to 100 °C

Typical applications

• Hot sewage and wastewater handling in bath centers and public recreational facilities
• Returned water in residential or commercial heating systems
• Geothermal and high-temperature hot-water extraction and disposal
• Industrial processes that generate hot, particulate-laden effluents

Installation & maintenance notes

• Designed for submerged operation; supports automatic level control and plug-and-play electrical protection modules for hands-off operation.
• Use with the recommended automatic coupling device to speed routine removal and service of the pump.
• Verify system piping and strainer sizing for the listed maximum solids diameter to avoid clogging and ensure reliable operation.

This pump is intended for buyers seeking a compact, energy-efficient solution for moving high-temperature, solid-laden wastewater in industrial and municipal settings. For selection, match required flow, head and maximum particle size to the model range to ensure optimal performance.