Atlas Copco WEDA L70N | Heavy-Duty Submersible Slurry Pump — 14.8 HP, 460V 3-Phase, 530 GPM, 4" Discharge

At 14.8 HP and 530 gpm of slurry-rated flow, the WEDA L70N is where Atlas Copco's submersible slurry family crosses from contractor-grade equipment into full industrial duty.

The Atlas Copco WEDA L70N sits in the upper mid-range of Atlas Copco's slurry pump family. With 530 gpm of throughput at heads reaching 81 ft, a 4" NPT discharge, and the engineering DNA that's made the WEDA name standard issue at mines and quarries worldwide, the L70N is built for one job — moving abrasive, solids-laden water in conditions that destroy other pumps.

The Slurry Difference

Slurry pumps are not sludge pumps with bigger motors. The L-series uses a fundamentally different hydraulic design — semi-open multi-vane impeller, urethane-armored wear surfaces in the volute, and a hardened wear plate that's designed to be replaced as a wear part. Where a sludge pump prioritizes solids passage (open vortex geometry, 2" particles), the slurry L-series prioritizes survival under abrasion — pumping silica-laden water, dredging spoils, mineral process slurry, and quarry runoff for thousands of hours between rebuilds.

Specifications

Where the WEDA L70N Earns Its Keep

• Mining mill duty — concentrator feed, secondary slurry transfer, tailings dewatering — applications where the pump runs 20+ hours per day for years
• Heavy quarry and aggregate plants — high-volume wash water recirculation, pit dewatering with silica loading
• Industrial dredging — sediment removal at port and harbor scale, river maintenance, reservoir cleanout
• Mineral processing facilities — magnetic separator feed, classifier underflow, thickener service
• Heavy industrial wastewater — steel mill scale pits, foundry runoff, coal preparation plant slurry handling
• Power-plant ash and slag — fluidized-bed boiler bottom-ash transfer, ash pond service

What's Different About a Slurry Pump's Hydraulic Path

Inside the volute of the WEDA L70N, every wetted surface is engineered for sacrificial wear and easy replacement:

• Hardened wear plate at the impeller inlet — replaceable as a single part, sized for the typical wear pattern of mineral slurries
• High-chrome cast-iron impeller — multi-vane semi-open design, 65 HRC hardness, profile optimized for solids up to 1"
• Polyurethane-armored volute liner on larger models, providing 3–10x the abrasion life of bare cast iron at the same wall thickness
• Class F motor insulation — operating temperature margin that keeps the pump alive through the inevitable dry-run, hot-water, and overload moments of real industrial life
• Double mechanical seal in a stainless cartridge running in an oil bath — same field-proven seal architecture as the rest of the WEDA family

Operating Profile

This is not a contractor's dewatering pump. The L-series is sized, priced, and engineered for facilities that move slurry as a primary process — mine mills, sand-and-gravel operations, dredging contractors, mineral processing plants. At 1,750 RPM (vs. 3,500 RPM for the smaller WEDA models), the L70N extracts more head per stage at lower wear, and runs cooler over multi-shift duty cycles.

Service Footprint

Atlas Copco supports the WEDA L-series with a global parts inventory, rebuild kits matched to typical wear, and dealer-based field-service for major overhauls. Wear-part replacement at the typical service interval costs a small fraction of pump replacement, which is the whole reason slurry pumps are designed this way.

SKU 8381070303 · WEDA L70N · 460V 3-Phase Y-series, 60 Hz · 4" NPT discharge · 1" max solids · CSA certified · engineered for continuous slurry duty.