LWA Series Lightweight Agitator, Hard Metal Dewatering Pumps

Lightweight Dewatering Pumps Built for Abrasive Applications

The BJM Pumps LWA Series combines lightweight construction with abrasion-resistant performance, making it ideal for dewatering applications involving sand, silt, and light slurry.

Designed for portability without sacrificing durability, these pumps deliver reliable performance in demanding jobsite conditions while remaining easy to transport and deploy.

Engineered for Abrasive Dewatering

Unlike standard lightweight pumps, the LWA Series is specifically built to handle abrasive materials such as sand, coal fines, and light slurry. A built-in agitator continuously mixes settled solids into suspension, helping restore sump capacity and prevent buildup.

Lightweight Yet Rugged Construction

The LWA Series features a lightweight design for portability, combined with abrasion-resistant internal components. Critical wear parts include:

• Hardened ductile iron agitator and volute

• High-chrome iron impeller and wear plate

This combination provides durability in abrasive environments while maintaining manageable weight.

Efficient Cooling and High-Speed Performance

The pumps use a jacketed motor cooled by the pumped liquid, allowing for reliable continuous operation. A 2-pole motor (~3450 RPM) delivers high-speed performance for effective dewatering.

The top discharge design improves cooling efficiency and allows for operation in lower water levels.

Designed for Portable Jobsite Use

With a compact footprint and lightweight construction, the LWA Series is ideal for applications requiring frequent movement or temporary installation, such as construction sites and rental use.

Key Features & Benefits

• Lightweight, portable dewatering design

• Built-in agitator for mixing and suspending solids

• Handles sand, silt, and abrasive light slurry

• Hardened ductile iron agitator and volute

• High chrome iron impeller and wear plate

• Solids handling up to ~0.4"

• Jacketed motor cooled by pumped liquid

• Top discharge configuration

• High-speed 2-pole motor (~3450 RPM)

• Continuous duty rated

• Durable construction for jobsite environments

• Power range: 2 HP, 10 HP

Performance Specifications

• Horsepower: 2-10 HP

• Max Flow: Up to ~670 GPM

• Max Head: Up to 120+ ft.

• Solids Handling: ~0.4"

• Motor Speed: ~3450 RPM

• Max Liquid Temp: ~104°F (40°C)

Typical Applications

• Construction site dewatering with sand and silt

• Coal fines and mining applications

• Sediment and slurry removal

• Utility and contractor dewatering

• Tank and basin cleanout

• Rental fleet and portable pumping