Product Details

The Tsurumi LB-800 is a heavy-duty, single-phase submersible dewatering pump designed for professional-grade water moving tasks. Delivering a powerful 1 HP performance, this pump is part of Tsurumi's legendary LB series, known for durability in the most demanding environments. It solves the problem of high-volume water accumulation in tight spaces; thanks to its slim, top-discharge design, the LB-800 can fit into pipes as small as 8 inches in diameter while providing constant motor cooling through the flow-through water design.

Key Features:

• Slimline Design: The top-discharge configuration allows the pump to operate in confined spaces and ensures the motor remains cooled by the pumped liquid even at low water levels.
• Urethane Semi-Vortex Impeller: Specifically designed to handle abrasive materials like sand and silt with minimal wear, maintaining high performance over time.
• Dual Inside Mechanical Seal: Features Silicon Carbide faces, providing the best possible protection against seal failure and moisture entry into the motor.
• Patented Oil Lifter: Ensures the mechanical seals remain lubricated and cooled, even if the pump is installed in a non-vertical position or if oil levels drop.
• Rugged Construction: Built with a heavy-duty motor frame and highly durable materials to withstand the rigors of construction and rental use.

Specifications:

• Motor Output: 1.0 HP (0.75 kW)
• Voltage: 115V / 1-Phase / 60Hz
• Discharge Size: 2" NPT (Top Discharge)
• Max Flow Rate: 80 Gallons Per Minute (GPM)
• Max Head: 59 Feet
• Continuous Duty: Rated for continuous operation
• Cable Length: 50 Feet (Heavy-duty)

Installation & Maintenance Tips:

• Tight Space Installation: Because of the top-discharge design, this pump is ideal for use in 8-inch or larger casing or narrow sumps.
• Debris Prevention: Ensure the suction strainer is clear before operation. While the impeller is wear-resistant, preventing large solids from entering will maximize the pump's lifespan.
• Electrical Safety: Always use a GFCI-protected outlet. The 50-foot cord provides ample reach, but avoid using thin extension cords that can cause voltage drops and motor strain.

Common Uses/Applications:

• Construction Sites: Draining excavations, trenches, and manholes where sand and debris are present.
• Industrial Sumps: Reliable water removal for factories and warehouses with high-volume drainage needs.
• Storm Water Removal: Efficiently clears flooded areas, parking lots, and basements after heavy rain events.

Common Questions:

Q: Can this pump run dry?

A: The top-discharge design allows the water being pumped to cool the motor, which provides better protection during low-water conditions than side-discharge pumps, though running completely dry for long periods should still be avoided.

Q: Is this pump automatic?

A: The standard LB-800 is a manual-start pump. For automatic operation, it can be paired with an optional Tsurumi TS-303 water level sensor or a piggyback float switch.

Q: What is the maximum size solid it can handle?

A: The LB-800 is designed for dewatering water containing sand and small abrasive solids; it is not intended for sewage or large debris handling.

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With its 1 HP motor and high-head capability, the Tsurumi LB-800 is the perfect solution for professionals who need a powerful, reliable, and slim-profile pump for rigorous dewatering applications.