Tsurumi 50PN21.5 Manual Submersible Semi-Vortex Wastewater Pump – 50PN21.5
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The Tsurumi 50PN21.5 is a corrosion-resistant manual submersible semi-vortex wastewater pump designed for handling wastewater, stormwater, and water containing small solid matter. Manufactured with a lightweight glass-fiber reinforced resin casing and 304 stainless steel components, it delivers reliable performance in demanding environments. The pump features a semi-vortex impeller with a 20 mm solids passage, dual silicon carbide mechanical seals with Tsurumi's patented Oil Lifter, anti-wicking cable entry, and a 1.5 kW three-phase direct-on-line motor for continuous-duty operation. :contentReference[oaicite:0]{index=0}
Suitable Applications
- Residential and commercial wastewater drainage
- Basement and stormwater pumping
- Septic tanks
- Wastewater treatment plants
- Construction site dewatering
- Water features, ponds, and aquaculture systems
Key Specifications
| Product Name | 50PN21.5 |
| Product Number | 50PN21.5 |
| Pump Type | Manual Submersible Semi-Vortex Wastewater Pump |
| Discharge Bore | 50 mm |
| Rated Flow | 0.20 m³/min (12 m³/h) |
| Rated Head | 14.5 m |
| Motor Output (P2) | 1.5 kW |
| Pump Speed | 2 Pole (3000 min⁻¹, 50 Hz) |
| Solids Passage | 20 mm |
| Impeller Type | Semi-Vortex |
| Shaft Seal | Dual Silicon Carbide Mechanical Seal with Oil Lifter |
| Bearing | Deep-Groove Double-Shielded C3 Ball Bearings |
| Pump Housing | Glass-Fiber Reinforced Resin |
| Frame Material | 304 Stainless Steel |
| Shaft Material | 304 Stainless Steel |
| Impeller Material | Glass-Fiber Reinforced PPO |
| Liquid Temperature | 0 to 40 °C |
| Motor Type | Dry-Type Submersible Induction Motor |
| Phase | Three Phase |
| Starting Method | Direct On Line (D.O.L.) |
| Insulation Class | Class E |
| Protection Device | Circle Thermal Protector |
| Lubricant | Liquid Paraffin (ISO VG32) |
| Cable Length | 6 or 10 m |
| Dry Weight | 15.9 kg |
Features
- Corrosion-resistant resin and stainless steel construction
- Semi-vortex impeller for wastewater containing small solids
- 20 mm solids handling capability
- Dual silicon carbide mechanical seals with patented Oil Lifter
- Anti-wicking cable entry prevents water ingress
- Continuous-duty induction motor
- Built-in thermal motor protection
- Back pull-out design for simplified servicing
- Suitable for water features, ponds, and aquaculture
Documentation & Downloads
| PN Series Product Guide | Download |
| VANCS PU / PN / TM Series Catalogue | Download |