Atlas Copco WEDA L40N | Submersible Slurry Pump — 5 HP, 460V 3-Phase, 220 GPM, 3" Discharge

Where standard dewatering pumps fail in days against abrasive media, the Atlas Copco WEDA L40N is a 5 HP submersible slurry pump engineered to move abrasive, solids-laden liquids across the heaviest applications in mining, quarrying, dredging, and industrial mineral processing.

Why a Slurry Pump?

If you've worn out a dewatering or sludge pump on quarry water, sand-and-gravel pit runoff, or any application that mixes abrasive solids into the flow, the answer is almost always: you bought the wrong pump category. Drainage and sludge pumps are designed around solids passage; slurry pumps are designed around solids survival. The WEDA L-series uses hardened wear plates, urethane-lined volutes (on larger models), and a multi-vane semi-open impeller in high-chrome cast iron — every wetted surface is treated as a replaceable wear component.

WEDA L40N Performance

Engineering Highlights

• High-chrome cast-iron impeller — multi-vane semi-open design, ~65 HRC, optimized for solids up to 0.8"
• Hardened wear plate at the impeller inlet — sized as a single sacrificial wear component, replaceable in the field
• Double mechanical seal in stainless cartridge with oil-bath barrier between the seals
• 1,750 RPM operation — lower shaft speed extends wear life vs. the higher-RPM dewatering and sludge models
• Class F motor insulation with thermal protection in every winding
• Cable entry sealed against fluid ingress — eliminates the most common failure mode of submersible pumps
• Aluminum-alloy upper housing for corrosion resistance; cast-iron and high-chrome wear parts where it matters

Common Applications

• Quarry water management — silica fines, gravel washing recirculation, settling pond pump-out
• Sand and aggregate plant process water
• Small-to-medium mining operations — secondary pit sumps, mill underflow
• Mineral processing — concentrator feed and tailings transfer
• Light dredging operations — small ponds, retention basins, marina maintenance
• Industrial wastewater with abrasive content — foundry, cement, ceramics manufacturing
• Construction sites with sand and silt loading the water column
• Coal slurry pumping in small-bore applications

How the WEDA L40N Fits in the L-Series

The L-series spans from the 5 HP L40N up to the 101 HP L110N. Each model targets a specific combination of head, flow, and solids-handling — head climbs and flow grows as you move up the range. The L40N sits at the entry point in this hierarchy: high enough to handle serious industrial slurry duty, but small enough to be deployed by a single crew without specialized lifting equipment.

Built for Long Service Intervals

Slurry pumps are wear-driven assets. The WEDA L-series is engineered to show wear (so you can predict service intervals) rather than fail unexpectedly. Service kits cover the impeller, wear plate, double-seal cartridge, motor end-cap rebuild, and cable assembly. Atlas Copco's dealer network stocks the most-common wear parts and offers field-service rebuilds through authorized dealers.

SKU 8381070300 · WEDA L40N · 460V 3-Phase Y-series, 60 Hz · 3" NPT discharge · 0.8" max solids · CSA certified · designed for continuous industrial slurry duty.