Tsurumi HSZ3.75S-62 Automatic Submersible Pump | 1 HP 115V

Product Details

The Tsurumi HSZ3.75S-62 is a high-torque, automatic submersible pump built to handle the most demanding dewatering tasks. Combining 1.0 HP of power with a 3-inch discharge, this pump is designed to move water containing sand, mud, and light debris without clogging. The "Z" designation indicates an integrated vertical float switch, which solves the problem of manual operation and potential dry-running in narrow sumps where traditional tethered floats might get stuck. It is the go-to solution for contractors who need powerful, unattended drainage in harsh environments.

Key Features:

• Automatic Vertical Float Switch: Enables hands-free operation and prevents dry-run damage. The vertical design is perfect for confined spaces where tethered floats cannot swing freely.
• Built-in Agitator: Features a shaft-mounted agitator that suspends solids, allowing the pump to pass sand, silt, and sludge more efficiently.
• Urethane Semi-Vortex Impeller: Engineered for extreme durability, providing much higher resistance to abrasive materials than standard cast iron or plastic components.
• Dual Inside Mechanical Seal: Housed in an oil chamber with Silicon Carbide faces, this seal provides the industry’s best protection against motor failure.
• Patented Oil Lifter: Ensures constant lubrication and cooling of the seal faces, even if the oil level falls or the pump is not perfectly level.

Specifications:

• Motor Output: 1.0 HP (0.75 kW)
• Voltage: 115V / 1-Phase / 60Hz
• Discharge Size: 3" NPT (Side Discharge)
• Max Flow Rate: 83 Gallons Per Minute (GPM)
• Max Head: 59 Feet
• Max Solids Diameter: 0.275" (7mm)
• Cable Length: 32 Feet

Installation & Maintenance Tips:

• Sump Dimensions: Ensure the sump or pit provides enough clearance for the vertical float to move freely up and down without touching the walls.
• Agitator Protection: While the agitator helps move solids, avoid using the pump in water containing large amounts of stringy material (like rags or long grass), which can wrap around the shaft.
• Electrical Requirements: This 1 HP pump has a high starting current; always use a dedicated circuit with a properly sized breaker to prevent nuisance tripping.

Common Uses/Applications:

• Construction Site Dewatering: Ideal for pumping out muddy trenches, foundation pits, and excavations where sand and silt are present.
• Industrial Sumps: Reliable for factory waste-water pits that require automatic level control and solids handling.
• Home & Municipal Drainage: Used for heavy-duty basement drainage or clearing catch basins after significant storm events.

Common Questions:

Q: Can the automatic float switch be replaced if it fails?

A: Yes, the vertical float assembly is a modular component that can be serviced or replaced without replacing the entire pump.

Q: Does the 3-inch discharge require a special hose?

A: It uses a standard 3" NPT threaded connection. You can use a 3-inch lay-flat discharge hose with a matching adapter for maximum flow efficiency.

With its high-torque motor, automatic level control, and specialized solids-handling agitator, the Tsurumi HSZ3.75S-62 is the ultimate professional solution for automatic, heavy-duty trash dewatering.