Tsurumi Submersible Pump HSZ2.4S 2 Inch Discharge Dewatering Machine (0.5 HP 115V Automatic Float Switch 53 GPM 39ft Head Sludge Sand Trash Drainage)

Tsurumi HSZ2.4S 1/2 HP 115V 2" Automatic Submersible Trash Dewatering Pump

The Tsurumi HSZ2.4S 1/2 HP submersible trash dewatering pump evacuates muddy foundation trenches, drains residential sumps, empties utility vaults, and transfers abrasive sand and bentonite slurry at delivery rates up to 53 GPM (3,180 GPH) with a maximum total head lift of 39 feet. Engineered with an integrated automatic vertical float switch for hands-free cycle control and powered by a continuous-duty 115V single-phase motor, this portable 2-inch NPT discharge unit prevents dry-running damage via internal thermal motor overload protection. Outfitted with a high-tensile shaft-mounted mechanical agitator that fluidizes settled solids, an abrasion-resistant urethane rubber semi-vortex impeller, and dual silicon carbide mechanical seals bathed by Tsurumi's patented internal oil lifter, it equips civil utility crews, foundation contractors, and commercial facility managers with clog-free slurry evacuation across dirty-water jobsites.

Best Used For:

• Automatic Trench and Foundation Dewatering: Maintaining dry excavations continuously without manual monitoring by cycling on and off as groundwater and storm runoff accumulate.
• Abrasive Sand and Bentonite Slurry Transfer: Fluidizing and pumping settled silt, drilling muds, and gritty sand from sediment collection basins and car wash sumps.
• Confined Manhole and Elevator Pit Pumping: Clearing nuisance muddy water, flooded utility vaults, and outdoor retention pits through standard 2-inch discharge hoses.

Key Performance & Safety Features

• Integrated Automatic Float Switch: Enables dependable unattended operation by activating and stopping pump cycles automatically based on rising water levels.
• Built-In Mechanical Sludge Agitator: Shaft-mounted cast iron agitator breaks up settled silt, sand, and sludge at the intake to prevent bottom clogging.
• Urethane Semi-Vortex Impeller: High-durability elastomer impeller resists severe abrasive wear while passing suspended solids cleanly through the volute.
• Dual Silicon Carbide Mechanical Seals: Isolated oil-chamber shaft seals provide superior abrasion and heat resistance compared to carbon-ceramic seals.
• Patented Internal Oil Lifter: Ensures continuous cooling and boundary lubrication across mechanical seal faces even at minimal oil bath levels.
• Rugged Gray Cast Iron Casing: Heavy-duty motor housing and pump volute resist mechanical impact, corrosion, and rough jobsite handling.

What's Included

• (1) Tsurumi HSZ2.4S 1/2 HP Automatic Submersible Trash Pump
• (1) Integrated Vertical Automatic Float Switch Mechanism
• (1) 20-Foot Heavy-Duty Submersible Power Cable
• (1) 2-Inch NPT Threaded Male Discharge Port Connection

Technical Specifications

Pro-Tip: Position the pump on a flat, solid paver block or suspended slightly above deep mud if the pit contains heavy gravel; this allows the agitator to suspend fine sand and silt without sucking in oversize rocks that could block the intake screen.