Tsurumi UT Series Submersible Sewage & Septic Pumps – 270 to 440 L/min
Description
The Tsurumi UT Series Submersible Sewage Pumps are heavy-duty cast iron vortex pumps designed for septic tanks, wastewater systems and other applications involving water containing suspended solids and fibrous material. Available in manual and automatic models, the range handles solids up to 35mm and delivers maximum flow rates up to 440 L/min.
The vortex impeller design helps reduce direct contact between solids and the impeller, providing reliable wastewater transfer with a reduced likelihood of clogging compared with conventional impeller arrangements.

Tsurumi UT Series Submersible Sewage & Septic Pumps
Designed for demanding wastewater applications, the Tsurumi UT Series combines heavy-duty cast iron construction with a vortex impeller capable of passing suspended solids up to 35mm.
The range includes 0.4kW and 0.75kW single-phase models with maximum flow rates of 270 and 440 L/min respectively. Both manual and automatic versions are available, making the range suitable for new installations as well as replacement of compatible existing septic and wastewater pumps.
Tsurumi UT Series Features
- Designed for sewage, septic and wastewater applications
- 35mm maximum solids handling
- 50mm side discharge
- Vortex impeller design
- Glass-fibre reinforced resin impeller
- Heavy-duty cast iron construction
- Maximum flow rates up to 440 L/min
- Maximum discharge head up to 12.5m
- Manual and automatic models available
- Automatic UTZ models incorporate level control
- Tsurumi anti-wicking cable entry design
- Dual silicon carbide mechanical seals
- Thermal motor protection
- 5m power cable
- Single-phase operation
- 12 month warranty
Vortex Impeller for Wastewater Applications
The UT Series uses a vortex impeller to create a swirling flow through the pump casing. This arrangement allows much of the pumped material to pass through the casing without travelling directly through the impeller.
The design is particularly useful when pumping wastewater containing suspended solids and fibrous material, helping reduce the likelihood of material becoming caught around the impeller.
The pumps have a maximum solids handling capacity of 35mm.
Septic Tank & Wastewater Pumping
With their 50mm discharge, vortex design and cast iron construction, these pumps are well suited to permanent or replacement installations in compatible wastewater systems.
Typical applications include:
- Septic tanks
- Wastewater systems
- Sewage pits
- Wastewater collection sumps
- Effluent transfer
- Drainage systems containing suspended solids
- Commercial and industrial wastewater applications
Always confirm that the pump's flow, head, solids capacity and materials are suitable for the specific wastewater system and installation.
Manual & Automatic Models
The Tsurumi UT Series is available in both manual and automatic configurations.
- 50UT2.4S: 0.4kW manual model – 270 L/min maximum flow
- 50UT2.75S: 0.75kW manual model – 440 L/min maximum flow
- 50UTZ2.4S: 0.4kW automatic model – 270 L/min maximum flow
- 50UTZ2.75S: 0.75kW automatic model – 440 L/min maximum flow
The automatic UTZ models provide water-level-controlled operation, allowing the pump to start and stop automatically as the liquid level changes.
Heavy-Duty Cast Iron Construction
The UT Series features robust cast iron construction suited to permanent submersible installations and demanding wastewater applications.
The vortex impeller is manufactured from glass-fibre reinforced resin, while dual silicon carbide mechanical seals provide a durable sealing arrangement between the pump and motor.
Tsurumi Anti-Wicking Cable Entry
Tsurumi's anti-wicking cable entry design helps prevent water travelling along the internal cable path towards the motor in the event that the outer cable is damaged.
Combined with the pump's mechanical sealing system and thermal motor protection, this provides a robust design for submersible wastewater service.
Tsurumi UT Series Specifications
| Model | Operation | Discharge | Motor | Phase | Max. Head | Max. Flow | Max. Solids | Dry Weight | Cable |
|---|---|---|---|---|---|---|---|---|---|
| 50UT2.4S | Manual | 50mm | 0.4kW | Single | 9m | 270 L/min | 35mm | 14kg | 5m |
| 50UT2.75S | Manual | 50mm | 0.75kW | Single | 12.5m | 440 L/min | 35mm | 16kg | 5m |
| 50UTZ2.4S | Automatic | 50mm | 0.4kW | Single | 9m | 270 L/min | 35mm | 14kg | 5m |
| 50UTZ2.75S | Automatic | 50mm | 0.75kW | Single | 12.5m | 440 L/min | 35mm | 16kg | 5m |
Additional Specifications
| Specification | Details |
|---|---|
| Pump Series | Tsurumi UT / UTZ |
| Pump Type | Submersible vortex sewage / wastewater pump |
| Starting Method | Capacitor |
| Discharge Port | 50mm side discharge |
| Maximum Solids Handling | 35mm |
| Impeller Type | Vortex |
| Impeller Material | Glass-fibre reinforced resin |
| Main Construction | Cast iron |
| Mechanical Seals | Dual silicon carbide (SiC) |
| Cable Entry | Tsurumi anti-wicking design |
| Motor Protection | Thermal protection |
| Power Cable | 5m |
| Warranty | 12 months |
Selecting the Correct Pump
The 0.4kW models provide up to 270 L/min at a maximum head of 9m, while the larger 0.75kW models provide up to 440 L/min with a maximum head of 12.5m.
Maximum flow and maximum head occur at different operating points. Actual flow will depend on the vertical lift, pipe diameter and length, fittings, valves and other restrictions within the wastewater system.
When replacing an existing septic pump, compare the required flow, operating head, discharge connection, solids handling and control arrangement rather than selecting on motor power alone.
Service & Spare Parts
Tsurumi pumps are serviceable, with replacement parts and spares available in Australia to support ongoing maintenance and repair.