Tsurumi LB-800A Automatic Submersible Dewatering Pump 1 HP 115V 2 Inch Discharge Smart Relay Electrode Switch 82 GPM 4920 GPH Slimline Design

Master Confined Space Dewatering with Tsurumis Intelligent Automatic Slimline Pump Technology

When failure is not an option on the job site, the Tsurumi LB-800A Automatic Submersible Dewatering Pump sets the industry standard for reliability and performance. This 1 HP powerhouse is specifically engineered for construction, municipal, and high-demand rental applications where space is at a premium. Its innovative “Slimline” design features a diameter of less than 9 inches, allowing it to fit into pipes as narrow as 8 inches, manholes, and tight excavations where traditional pumps simply cannot go. Moving an incredible 4,920 gallons per hour, the LB-800A is the professional choice for rapid water removal in deep foundations and turbulent environments.

The LB-800A is a “smart” dewatering solution featuring an advanced electrode relay switch. This floatless technology automatically starts and stops the pump by detecting water levels, eliminating the mechanical snags and failures common with traditional tethered floats in cramped conditions. To ensure extreme durability, the pump is built with a urethane semi-vortex impeller and Tsurumis patented oil lifter system, providing continuous lubrication to the dual silicon carbide mechanical seals. The top-discharge design forced-cools the motor using the pumped water, allowing for continuous-duty operation and providing superior dry-run capability, making it the most resilient dewatering tool in your inventory.

Key Features

• Intelligent Automatic Operation: Floatless electrode relay switch detects water levels to start the pump, featuring an internal timer to prevent rapid on/off cycling in rough water.
• High-Volume Performance: Robust 1 HP motor delivers a massive 82 GPM (4,920 GPH) with an impressive maximum head lift of 59 feet.
• Slimline Confined Space Design: Compact 8-3/4″ diameter allows for easy deployment into 8-inch pipes and narrow manholes.
• Superior Cooling System: Top-discharge flow-through design uses pumped water to cool the motor, enabling continuous duty and dry-run protection.
• Industrial Grade Durability: Equipped with a wear-resistant urethane semi-vortex impeller and dual internal mechanical seals with silicon carbide faces.
• Patented Oil Lifter: Provides consistent lubrication and cooling to seal faces, even if oil levels fall, ensuring a long, trouble-free service life.
• Extended Reach: Includes a 50-foot heavy-duty power cord for maximum flexibility across large construction and utility sites.

What’s Included

• (1) Tsurumi LB-800A 1 HP Automatic Submersible Pump
• (1) Integrated Electrode Relay Switch (Automatic)
• (1) 50-Foot Heavy-Duty Power Cable
• (1) 2-Inch NPT Discharge Connection

Specifications

Pro-Tip: To achieve maximum flow and prevent backpressure on the motor, always use a high-quality 2-inch reinforced discharge hose. For the fastest setup in municipal or emergency response applications, equip your discharge with aluminum cam-lock (quick-connect) fittings to ensure a leak-proof, secure connection in seconds under high-pressure conditions.

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