Tsurumi LB Series Manual Submersible Portable Drainage Pump – LB-800
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Warranty: Manufacturer’s Warranty
The Tsurumi LB-800 is a single-phase manual submersible portable drainage pump built for dewatering in tight or confined spaces, slim enough to fit inside an 8-inch pipe. Its top discharge flow-thru design provides maximum motor cooling for continuous operation at low water levels and extended dry-run capability. The pump includes dual inside mechanical seals with silicon carbide faces, an Oil Lifter for enhanced seal lubrication, an anti-wicking cable entry, and a circle thermal protector (CTP) for overheat and overcurrent protection. This Australian version is rated for 50Hz operation (240V supply) and is well-suited for foundation work, flood response, and general site drainage across Australia and other 50Hz regions.
Suitable Applications
- Foundation dewatering on construction and civil works sites
- Floodwater drainage and emergency water removal
- General site drainage in residential, commercial, and industrial settings
- Site dewatering via narrow shafts or pipe-accessed locations
- Sediment removal from sumps and basins
- Raw water supply from lakes or rivers
Key Specifications
| Product Name | LB-800 |
| Pump Type | Submersible manual drainage pump |
| Discharge Bore | 50 mm (80 mm available on special request) |
| Motor Output | 0.75 kW |
| Phase | Single-phase |
| Starting Method | Capacitor Run |
| Speed | 3000 min⁻¹ (at 50Hz) |
| Solids Passage | 6 mm |
| Shaft Seal | Dual inside mechanical seals (Upper: Ceramic + Carbon; Lower: SiC + Ceramic) with Oil Lifter |
| Liquid Temperature Range | 0 to 40°C |
| Connections | 50 mm Multi-directional Hose Coupling (vertical or inclined) |
| Impeller Material | Urethane rubber (vortex design) |
| Casing Material | Synthetic rubber (see note) |
| Bearing | Deep-groove, double-shielded C3 ball bearings (permanently lubricated) |
| Supply Voltage (Australia) | 240V (50Hz) |
| Rated Current (at 240V 50Hz) | 4.4 A |
| Enclosure Class | IP68 |
| Insulation Class | E |
| Motor Protection | CTP (Circle Thermal Protector) – cuts circuit on overheat or overcurrent |
| Lubricating Oil | Turbine Oil (ISO VG32), 155 ml |
| Shaft Material | 403 Stainless Steel |
| Cable | Australian plug type |
| Automatic Control | None (manual operation) |
| Minimum Operating Water Level | 5 cm |
| Dry Weight (excluding cable) | 13.1 kg |
Documentation & Downloads
| Single-phase Portable Pumps Catalogue (LB/HS/HSD/LSC/LSP Series) | Download |
| LB/LB-A Series Product Guide | Download |