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Submersible Sewage Pumps U Series

Tsurumi U Series pumps are a part of the submersible sewage pumps vortex impeller series. These pumps feature a vortex impeller that is recessed in the pump casing interior, which allows them to handle sewage with large solids without clogging or winding.

Thanks to their unique design, the Tsurumi U Series pumps are ideal for applications that require the pumping of sewage or wastewater containing large solid materials. Their ability to handle such materials without clogging or winding makes them a reliable choice for a wide range of sewage and wastewater management applications.

In addition to their robust performance, the Tsurumi U Series pumps are also designed for ease of use and maintenance. Their simple yet efficient design allows for quick and easy access to the impeller and other key components, making maintenance and repair work much more straightforward.

UZ Series

SUBMERSIBLE SEWAGE PUMPS DESIGN U SERIES

GUIDE RAIL FITTING SYSTEM U SERIES

The guide rail fitting system connects the pump to and from the piping easily just by lowering and hoisting the pump, allowing easy maintenance and inspection without the need to enter the sump.
Pump models used in combination with the guide rail fitting system can be identified by the prefix “TOS”, “TS” and “TOK”. Refer to standard specifications for availability and model numbers.

TOS
The TOS is the standard guide rail fitting system made of cast-iron and is compatible with cast-iron pumps. Pumps having discharge bore from 50mm to 100mm are available for the TOS.

TOK
Made of high-quality resin, the TOK is designed for light-weight, small pumps. Rubber bellow attached to the guide hook are inverted to the duckfoot bend when the pump starts operating. This eliminates leakage at the seal even if a light-weight pump is used in combination with the TOK.

AUTOMATIC MODEL

The automatic model has an integral control circuit and two float switches that operate at a low voltage. It operates automatically in response to the change in water levels. As it has a Circle Thermal Protector (CTP) integrated into the motor to protect the motor from overload or overheating, it is not required to provide an extra motor protection circuit in the starter panel. 

This model can be identified by the suffix “A”. Refer to the standard specifications for availability and model numbers.

AUTO-ALTERNATION MODEL

The auto-alternation model is used along with an automatic model. The combinational use of these two pumps enables each pump to operate alternately without control panel.

The auto-alternation model has three floats and can be identified by the suffix “W”. Refer to standard specifications for availability and model numbers. It is available in the same output range of the automatic pumps.

How the Auto-alternation Model Works

 – Operation is enabled by merely connecting the power supply.

Primary Operation

1. Float 3 operates, and pump W starts to discharge water.

2. Water is discharged (water level falls).

3. Stop float 2 of pump W operates to end water discharge. At this time, alternation start float 3 of pump W rests for one discharge operation.

Secondary Operation

1. Start float 4 of pump A operates to start water discharge.

2. Water is discharged (water level falls).

3. Stop float 1 of pump A operates to end water discharge. At the same time, start float 3 of pump W becomes ready for operation.

PERFORMANCE CURVES & DIMENSIONS

U Series Discharge Bore: 40 • 50mm

MODEL SELECTION

U Series Discharge Bore: 40 • 50mm

Curve No. Discharge
Bore
mm
Standard Model Automatic Model Auto-Alternation Model
Free Standing Guide Rail Fitting Free Standing Guide Rail Fitting Free Standing Guide Rail Fitting
1 40 40U2.25S (TOK) 40UA2.25S (TOK) 40UW2.25S (TOK)
40 40U2.25 (TOK) 40UA2.25 (TOK) 40UW2.25 (TOK)
2 50 50U2.4S (TOK) 50UA2.4S (TOK) 50UW2.4S (TOK)
50 50U2.4 (TOK) 50UA2.4 (TOK) 50UW2.4 (TOK)
3 50 50U2.75 (TOK) 50UA2.75 (TOK) 50UW2.75 (TOK)
4 50 50U21.5 TOS50U21.5 50UA21.5 TOS50UA21.5 50UW21.5 TOS50UW21.5

* All weights excluding cable
  Weights of guide rail fitting model excluding duckfoot bend

Motor
Output
kW
Phase Speed (S.S.)
50Hz/60Hz
min -1
Starting
Method
Solids
Passage
mm
Cable
Length
m
Cable
Code
Dimensions L×H mm Dry Weight * kg
Standard Model Auto&Auto-Alternation Model Standard Model Auto&Auto-Alternation Model
Free Standing Guide Rail Fitting Free Standing Guide Rail Fitting Free Standing Guide Rail Fitting Free Standing Guide Rail Fitting
0.25 Single 3000/3600 Split-phase 35 5 a 241×383 - 241×433 - 14 - 15.5 -
0.25 Three 3000/3600 D.O.L. 35 6 A 241×383 - 241×433 - 13.5 - 15 -
0.4 Single 3000/3600 Capacitor 35 5 a 236×433 - 236×450 - 20 - 21 -
0.4 Three 3000/3600 D.O.L. 35 6 A 236×400 - 236×450 - 19.2 - 21 -
0.75 Three 3000/3600 D.O.L. 35 6 A 249×395 - 310×476 - 23 - 24 -
1.5 Three 3000/3600 D.O.L. 35 6 A 297×466 658×478 347×560 708×572 30 35 31 36

* All weights excluding cable
  Weights of guide rail fitting model excluding duckfoot bend

PERFORMANCE CURVES & DIMENSIONS

U Series Discharge Bore: 80mm

MODEL SELECTION

U Series Discharge Bore: 80mm

Curve
No.
Discharge
Bore
mm
Standard Model Automatic Model Auto-Alternation Model
Free Standing Guide Rail Fitting Free Standing Guide Rail Fitting Free Standing Guide Rail Fitting
1 80 80U2.75 TOS80U2.75 80UA2.75 TOS80UA2.75 80UW2.75 TOS80UW2.75
2 80 80U21.5 TOS80U21.5 80UA21.5 TOS80UA21.5 80UW21.5 TOS80UW21.5
3 80 80U22.2 TOS80U22.2 80UA22.2 TOS80UA22.2 80UW22.2 TOS80UW22.2
4 80 80U23.7 TOS80U23.7 80UA23.7 TOS80UA23.7 80UW23.7 TOS80UW23.7

* 1 200~240V
* 2 All weights excluding cable

      Weights of guide rail fitting model excluding duckfoot bend

Motor Output kW Phase Speed (S.S.)
50Hz/60Hz
min -1
Starting
Method
Solids
Passage
mm
Cable
Length
m
Cable
Code
Dimensions L×H mm Dry Weight *2 kg
Standard Model Auto&Auto-Alternation
Model
Standard Model Auto&Auto-Alternation
Model
Free
Standing
GuideRail
Fitting
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
0.75 Three 3000/3600 D.O.L. 46 6 A 383×421 605×531 444×502 666×612 29 24 30 26
1.5 Three 3000/3600 D.O.L. 46 6 A 420×499 642×609 469×593 691×703 40 36 41 37
2.2 Three 3000/3600 D.O.L. 56 6 A(B*1) 502×562 641×647 502×656 641×741 55 51 63 59
3.7 Three 3000/3600 D.O.L. 56 6 B(C*1) 502×565 641×650 502×629 641×714 62 58 73 69

* 1 200~240V
* 2 All weights excluding cable

      Weights of guide rail fitting model excluding duckfoot bend

CABTYRE CABLE CODE REFERENCE

Single-Phase

Code No. of
Cables
Cores × mm2 Outer Dia.
mm
Material
a 1 3×1.25 10.1 PVC

Three-Phase

Code No. of
Cables
Cores × mm2 Outer Dia.
mm
Material
A 1 4×1.25 11.1 PVC
B 1 4×2.0 11.8
C 1 4×3.5 13.9
Code No. of
Cables
Cores × mm 2 Outer Dia.
mm
Material
D 1 4×3.5 14.1 Chloroprene
Rubber
E 1 4×5.5 16.8
F 3 4×3.5 14.1 Chloroprene
Rubber
3×3.5 12.9
2×1.25 9.6 PVC

TSURUMI OPTIONS

  • SPECIAL VERSION WITH GALVANIC CORROSION PROTECTION
    In seawater, a material’s resistance to corrosion can be seen clearly. When metals with different potentials are brought into contact in seawater, only the metal of lower potential corrodes. As the difference in potential increases, the metal of lower potential corrodes faster. As an option, Tsurumi can supply pumps with parts made of higher electric potential metal as the sacrificial anode.
  • SPECIAL VERSION FOR HIGHER TEMPERATURE LIQUID
    Standard pumps are designed for continuous running at the maximum ambient temperature of 40°C. In addition to these, Tsurumi can provide pumps for operation at higher liquid temperatures upon request. Refitting for operation at higher temperatures involves modification of not only the insulation of motor windings but also several components. Two high-temperature operating models are available – the Rank 60 for operation in liquids up to 60°C and the Rank 90 for operation in liquids up to 90°C. Consult your dealer for more details. (These special versions are not available for some pump models.)
  • DRY PIT VERSION
    The advantage of dry pit model is that it will not be damaged by flooding, as it is constructed with a submersible pump. Tsurumi can provide the dry pit model as option for the whole range of U/UZ-series pumps. The water jacket covers whole part of the motor. It efficiently cools the motor for continuous operations.
  • SPECIAL VERSION WITH NON-STANDARD MATERIALS
    Tsurumi can also provide you with pumps with essential components such as the impeller, pump casing and the suction cover made of non-standard materials. Select from stainless steel, chromium iron and bronze to suit your specific requirements. Consult your dealer for more details.

SPECIAL ACCESSORIES

Model MC-2 is a heavy-duty type float switch with a shock absorber.
Having equipped with a high grade micro switch, the MC-2 assures trouble-free operation in the liquid containing much suspended solids and floating scum. Either of the two contacts, normally-open or normally-close, can be selected as required.

Model RF-5 is an economy type float which can detect upper/lower limit water levels with single float. The snap on-off action ensures stable operation in clean or waste water containing suspended solids or oil and fat.