Submersible Sewage Pumps B Series

Tsurumi B series pumps are basic heavy-duty, submersible sewage and wastewater pumps providing excellent foreign matter passing capability with reliable operation. The B series pumps have accumulated various track record and know-how in a wide range of industrial and water treatment applications for many years. Using a channel impeller, they are designed to minimize trouble due to clogged solids and fibrous matter in pumped fluids.

The B-series offers a wide line up of discharge bores ranging from 50 – 300 mm and motor outputs of 0.4 – 75 kW, and comes in a variety of models including high head type and single-phase BP models that can handle high volume pumping demand. Particularly, the high head type pumps can satisfy the needs of the building equipment market that is oriented to saving energy and conserving water, and fit other high head market applications. Moreover, the pumps can be used with Tsurumi’s guide rail fitting device that facilitates installation and maintenance (except for BP models).

B Series 1

Tsurumi pumps come packed with a number of original technologies we have developed and honed over years of research, including an anti-wicking cable, motor protector, dual inside mechanical seals with silicon carbide faces and Oil Lifter. Highly reliable and durable, Tsurumi pumps are designed and built for sound quality and prolonged continuous operation.

The B-series pumps can help you keep your systems – whether for wastewater drainage, water treatment, flood control, irrigation and recreation
facilities – running stably and greatly reduce your maintenance costs.
Additionally, the pumps can be specially configured with discharge bores of 400 mm and greater, or as an option, adapted for dry pit applications where they can be installed indoors and outside a tank, as well as for seawater or high temperature liquids, paving the way for their use at shipyards and power plants for water intake and discharge.

Selection Table

Motor Output (kW) 0.4 0.75 1.5 2.2 3.7 5.5 7.5 11 15 18.5 22 37 75
2" 50mm                      
3" 80mm              
4" 100mm                  
6" 150mm                          
8" 200mm                          
10" 250mm                          
12" 300mm                          

★ : Single/Three-phase model can be selected in the same motor output.
☆ : Single-phase model only.
 ● : High head type model only.

Model Number Designation

Guide Rail Fitting System

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.
The TOS/TO is the guide rail fitting system made of cast iron and is compatible with cast iron pumps.

Accessories
• Duckfoot Bend
• Guide Support
• Guide Hook
• Lifting Chain 5m
• JIS 10kg/cm 2 Flange
(TOS set only, excluding TOS200B422)

Float Switches

Tsurumi offers two types of float switches (liquid level sensors). A micro-switch is incorporated in both types.

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.

Options

Seawater-Resistant Version

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.

High Temperature Liquids Version

Tsurumi’s submersible pumps are applicable to high temperature liquids of up to 80°C. Pumps of the standard specification can discharge liquids of up to 40°C. However, there are many fields that need to discharge higher temperature liquids, e.g., discharging industrial water from a power plant or ironworks, or discharging hot spring water from a mine in a volcanic zone.

Special Material Version

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, high-chromium cast iron and bronze to suit your specific requirements.

Dry Pit Version

The dry pit pumps can be installed indoors and outside of tanks, and still deliver the performance of conventional submersible pumps. Daily inspection and maintenance are easy, because the pump body is installed outside of tanks. These pumps have been developed with Tsurumi-original specifications, aiming for stable operation and reduction in maintenance labor.

Design Model 80B21.5

1.Anti-wicking Cable Entry
Prevents water incursion due to capillary action should the cable sheath be damaged or the end of cable submerged. Also prevents moist air from infiltrating the motor housing and condensation from forming inside the housing due to temperature differences between the housing and outside air.

2.Air Release Valve
Fitted on the water jacket or the pump casing to prevent the air lock. When air flows through the valve, the ball stays at the bottom, but when the pumped water starts to flow, the ball closes the outlet because of its buoyancy.

3.Motor Protector
Circle Thermal Protector (7.5kW and below)
Directly cuts the motor circuit if excessive heat builds up or overcurrent occurs in the motor.
Miniature Thermal Protectors (11kW and above)
React to excessive heat caused by dry-running. The bimetal strip opens to cause the control panel to shut the power supply.

4.Water Jacket (150B475 only)
The pump is equipped with a water jacket, around the motor frame. A portion of the pumped liquid is allowed to flow into the water jacket to cool the motor. This design feature permits the unit to operate at low water levels for extended periods of time.

5.Dual Inside Mechanical Seals with Silicon Carbide Faces
Isolated in the oil chamber where a clean, non-corrosive and abrasion-free lubricating environment is maintained. Compared with the water-cooled outside mechanical seal, it reduces the risk of failure caused by dry-heating and adhering matter. The silicon carbide provides 5 times higher corrosion, wear and heat resistance than the tungsten carbide. Rubber parts of the upper and lower fixing rings are made of NBR or FPM (FKM), which provides higher resistance to heat and chemical

6.Oil Lifter
Provides lubrication and cooling of the seal faces down to 1/3 of normal oil level, thus maintaining a stable shaft sealing effect and prolonging seal life longer. The Oil Lifter is Tsurumi original design.

7.Leakage Sensor (18.5kW and above, excluding 150B422 and 200B422)

Detects flooding into the oil chamber that may occur in a worst case scenario. When flooding is detected, signals are sent to operate the indicator lamps through the external control panel.

8.Single/Triple Oil Seals *excluding some models
Labyrinth Ring (150B475 only)
Used as a “Dust Seal”, single or triple oil seals protect the mechanical seal from abrasive particles. The labyrinth ring is equipped to provide a better countermeasure against wear caused by high pressure generated in the casing and improve the maintainability.

9.Seal Pressure Relief Port (11kW and above of 80 & 100mm bore, 22kW and above of 150mm bore, and 200B422)Protects the mechanical seal from pump pressure. It also protects the seal face by discharging wear particles.

10.Mouth Ring & Wear Ring (150B437 and 150B475 only)
Prevent wear in the pump casing and suction cover, resulting in reduced maintenance costs.

Anti-clogging Channel Impeller – Pumps solids like liquids –

     The impeller employed by B-series pumps is itself configured like a channel to make it less likely for solids and fibrous matter to clog inside the pumps. Depending on the pumping capacity, the pump is outfitted with a semi-open or shrouded impeller, and either 1 or 2 vanes. Equipping your pump with the right impeller minimizes trouble caused by clogged solids.

Semi-open,
Two-channel

Semi-open,
Single-channel

Semi-open,
Two-channel (High Head)

Shrouded,
Two-channel

B -Channel Impeller-

The B-series is a basic heavy-duty, submersible sewage and wastewater pumps providing excellent foreign matter passing capability with reliable operation. They offer a wide lineup of discharge bores ranging from 50 – 300 mm and motor outputs of 0.4 – 75 kW, and come in a variety of models including high head type and single-phase BP models that can handle high volume pumping demand. The B-series pumps have accumulated various track record and know-how in a wide range of industrial and water treatment applications for many years.

Dimensions

Performance Curves

Discharge Bore: 50 • 80mm

Discharge
Bore

mm
Model Motor
Output
kW
Phase Starting
Method
Dimensions L x W x H 50/60Hz
mm
Dry Weight* 50/60Hz
kg
Cable
Length

m
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
50 50B2.4S TOS50B2.4S 0.4 Single Capacitor Start 340 x 220 x 453 556 x 220 x 511 25 24 5
50B2.4 TOS50B2.4 0.4 Three D.O.L. 340 x 220 x 420 556 x 220 x 478 23 22 6
50B2.75S TOS50B2.75S 0.75 Single Capacitor Start 405 x 250 x 523 621 x 250 x 567 32 30 5
50B2.75H TOS50B2.75H 0.75 Three D.O.L. 405 x 250 x 415 621 x 250 x 458 24 23 6
50B2.75 TOS50B2.75 0.75 Three D.O.L. 405 x 250 x 439 621 x 250 x 479 25 24 6
80 80BP2.4S(50Hz) - 0.4 Single Capacitor Run 296 x 195 x 363 - 12.7 - 5
80BP2.75S (60Hz) - 0.75 Single Capacitor Run 296 x 195 x 383 - 14.5 - 5
80B21.5 TOS80B21.5 1.5 Three D.O.L. 446 x 250 x 536 668 x 250 x 586 36 34 6
80
-High Head
80B411 TOS80B411 11 Three Star-Delta 753 x 466 x 1057 926 x 466 x 1021 270/265 265/260 8
80B415 TOS80B415 15 Three Star-Delta 791 x 540 x 1057/
753 x 466 x 1057
942 x 493 x 1021/
926 x 466 x 1021
290/265 275/265 8
80B418.5 TOS80B418.5 18.5 Three Star-Delta 791 x 540 x 1222/
753 x 466 x 1222
942 x 493 x 1186/
926 x 466 x 1186
380/360 365/355 8
80B422 TOS80B422 22 Three Star-Delta 791 x 540 x 1222 942 x 493 x 1186 385/375 365/360 8

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

Performance Curves

Discharge Bore: 100mm

Discharge
Bore

mm
Model Motor
Output
kW
Phase Starting
Method
Dimensions L x W x H 50/60Hz
mm
Dry Weight* 50/60Hz
kg
Cable
Length

m
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
100 100B42.2 TOS100B42.2 2.2 Three D.O.L. 596 x 324 x 642 754 x 324 x 656 68 64 6
100B43.7 TOS100B43.7 3.7 D.O.L.*1 601 x 332 x 716 759 x 332 x 725 84 80 6
100B43.7H TOS100B43.7H 3.7 D.O.L.*1 602 x 344 x 692 760 x 344 x 706 82 78 6
100B45.5 TOS100B45.5 5.5 D.O.L.*1 686 x 410 x 908 905 x 384 x 906 140 133 8
100B47.5 TOS100B47.5 7.5 D.O.L.*1 686 x 410 x 929 905 x 384 x 927 154 147 8
100
-High Head-
100B411 TOS100B411 11 Star-Delta 775 x 490 x 1114/
691 x 410 x 1056
994 x 465 x 1091/
910 x 382 x 1049
280/230 270/220 8
100B415 TOS100B415 15 Star-Delta 775 x 490 x 1114/
691 x 410 x 1056
994 x 465 x 1091/
910 x 382 x 1049
280/230 270/220 8
100B418.5 TOS100B418.5 18.5 Star-Delta 775 x 490 x 1279 994 x 465 x 1256 370 365/355 8
100B422 TOS100B422 22 Star-Delta 775 x 490 x 1279 994 x 465 x 1256 370 365/355 8

*1 Star-Delta available upon request
*2 Refer to page 8 for dimension symbol positions.
*3 All weights excluding cable
    Weights of guide rail fitting excluding duckfoot bend

Performance Curves

Discharge Bore: 150mm

Discharge
Bore

mm
Model Motor
Output
kW
Phase Starting
Method
Dimensions L x W x H  *2
mm
Dry Weight*3
kg
Cable
Length

m
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
150 150B43.7 TOS150B43.7 3.7 Three D.O.L. 871 x 486 x 875 1065 x 459 x 820 145 120 6
150B63.7 TOS150B63.7 3.7 D.O.L.* 1 838 x 424 x 903 1023 x 395 x 926 188 158 6
150B47.5H TOS150B47.5H 7.5 D.O.L.* 1 834 x 418 x 951 1028 x 404 x 976 205 175 8
150B47.5L TOS150B47.5L 7.5 D.O.L.* 1 871 x 486 x 1085 1065 x 459 x 1030 200 175 8
150B411 TOS150B411 11 Star-Delta 895 x 490 x 1097 1089 x 464 x 1052 245 215 8
150B415 TOS150B415 15 Star-Delta 895 x 490 x 1167 1089 x 464 x 1122 266 236 8
150B422 TOS150B422 22 Star-Delta 898 x 492 x 1222 1092 x 470 x 1181 327 298 10
150B437 TO150B437 37 Star-Delta 1085 x 724 x 1548 1306 x 610 x 1380 640 540 10
150B475 TO150B475 75 Star-Delta 1305 x 775 x 1896 1517 x 765 x 1786 1180 1140 10

*1 Star-Delta available upon request
*2 Refer to page 8 for dimension symbol positions.
*3 All weights excluding cable
    Weights of guide rail fitting excluding duckfoot bend

Performance Curves

Discharge Bore: 200 • 250 • 300mm

Discharge
Bore

mm
Model Motor
Output

kW
Phase Starting
Method
Dimensions L x W x H  *2
mm
Dry Weight*3
kg
Cable
Length

m
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
Free
Standing
Guide Rail
Fitting
200 200B47.5 TO200B47.5 7.5   D.O.L.* 1 926 x 486 x 1085 1266 x 459 x 1050 207 212 8
200B411 TO200B411 11 Star-Delta 926 x 486 x 1131 1266 x 459 x 1096 253 258 8
200B415 TO200B415 15 Star-Delta 971 x 526 x 1196 1234 x 433 x 1161 291 276 8
200B422 TOS200B422 22 Star-Delta 953 x 492 x 1222 1117 x 470 x 1181 323 289 10
250 250B611 TO250B611 11 Star-Delta 1203 x 621 x 1211 1513 x 574 x 1165 430 390 8
250B415 TO250B415 15 Star-Delta 1146 x 558 x 1228 1451 x 497 x 1194 411 371 8
300 300B615 TO300B615 15 Star-Delta 1302 x 656 x 1314 1666 x 652 x 1274 550 520 8

*1 Star-Delta available upon request
*2 Refer to page 8 for dimension symbol positions.
*3 All weights excluding cable
    Weights of guide rail fitting excluding duckfoot bend

Submersible pumps with wide solids passages of over 3 inches

BZ-series (80 – 350 mm)

The BZ-series pumps are heavy-duty, submersible sewage and wastewater pumps that are designed with a shrouded single/two-channel impeller and wide passages of over 3 inches (76.2 mm) in diameter to minimize trouble due to clogged solids. This series offers a wide lineup of discharge bores ranging from 80 – 350 mm and motor outputs of 1.5 – 75 kW. For details, refer to the BZ-series catalog [IA101].

Extra-large discharge bores of 350 mm or greater

B-series (350 – 800 mm)

As an option, the B-series pumps can be specially configured with discharge bores of 350 mm and greater, or adapted for dry pit, seawater, high temperature liquids and other special applications. Let Tsurumi know what you need.

Specifications

#1 B
50B2.4S 50B2.4 50B2.75S 50B2.75H
50B2.75
80BP2.4S
(50Hz)
80BP2.75S
(60Hz)
80B21.5 80B411
80B415
80B418.5
80B422
PUMP Discharge Bore   mm 50 80
Discharge Connection Threaded Oval Flange Threaded JIS 10kg/cm 2  Flange
Impeller Semi-open Single-channel Shrouded Two-channel Semi-open
Single-channe
Semi-open Two-channel
Axial Gap
Gray Cast Iron Glass-fiver Reinforced Resin
(PPO-GF)
Gray Cast Iron
Suction Cover Ductile Cast Iron Gray Cast Iron - Gray Cast Iron
Mouth Ring & Wear Ring -
Oil Seal    Q'ty Single - Single
Nitrile Butadiene Rubber Nitrile Butadiene Rubber
Labyrinth Ring -
Casing Gray Cast Iron
Shaft Seal Dual Inside Mechanical Seals (with Oil Lifter)
Silicon Carbide
MOTOR Type Continuous-duty Rated, Dry-type Induction Motor
Output     kW 0.4 0.75 0.4 0.75 1.5 11
15
18.5
22
Phase Single Three Single Three Single Three
Pole 2 4
Speed d (S.S.)     min -1
50/60Hz 
3000/3600 3000/- -/3600 3000/3600 1500/1800
Insulation E 4
Starting Method Capacitor
Start
D.O.L. Capacitor
Start
D.O.L. Capacitor
Run
D.O.L. Star-Delta
Motor Protector
(built-in)
CTP MTP
Leakage Sensor
(built-in)
- Electrode
Lubricant    ml 180 440 240 900 4700 5300
Turbine Oil (ISO VG32) Liquid Paraffin (ISO VG32) Turbine Oil (ISO VG32)
Frame Gray Cast Iron 304 Stainless Steel Gray Cast Iron
Outor Cover -
Shaft 420 Stainless Steel 304 Stainless Steel 420 Stainless Steel
Power Cable     m 5 6 5 6 5 6 8
PVC Chloroprene Rubber
Dry Weight*
50/60Hz0
Free Standing     kg 25 23 32 24
25
12.7 14.5 36 270/265
290/265
380/360
385/375
Guide Rail Fitting     kg 24 22 30 23
24
- - 34 265/260
275/265
365/355
365/360

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

Specifications

#2 B
100B42.2 100B43.7 100B43.7H 100B45.5
100B47.5
100B411
150B415
100B418.5
100B422
150B43.7 150B63.7
PUMP Discharge Bore   mm 100 150
Discharge Connection Threaded JIS 10kg/cm 2  Flange
Impeller Semi-open Single-channel Semi-open
Two-channel
Shrouded
Two-channel
Semi-open Two-channel Shrouded Two-channel
Axial Gap Radial Gap Axial Gap Radial Gap
Gray Cast Iron
Suction Cover Gray Cast Iron
Mouth Ring & Wear Ring -
Oil Seal    Q'ty Single -
Nitrile Butadiene Rubber
Labyrinth Ring -
Casing Gray Cast Iron
Shaft Seal Dual Inside Mechanical Seals (with Oil Lifter)
Silicon Carbide
MOTOR Type Continuous-duty Rated, Dry-type Induction Motor
Output     kW 2.2 3.7 5.5
7.5
11
15
18.5
22
3.7
Phase Three
Pole 4 6
Speed (S.S.)     min -1
50/60Hz 
1500/1800 1000/1200
Insulation F B
Starting Method D.O.L. D.O.L.*2 Star-Delta D.O.L.*2
Motor Protector
(built-in)
CTP MTP CTP
Leakage Sensor
(built-in)
- Electrode -
Lubricant    ml 1350 4200
4800
4700 5300 1350 4200
Turbine Oil (ISO VG32)
Frame Gray Cast Iron
Outor Cover -
Shaft 420 Stainless Steel
Power Cable     m 6 8 6
PVC Chloroprene Rubber PVC Chloroprene
Rubber
Dry Weight*
50/60Hz  
Free Standing     kg 68 84 82 140
154
280/230 370 145 188
Guide Rail Fitting     kg 64 80 78 133
147
270/220 365/355 120 158

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

Specifications

#3 B
150B47.5H 150B47.5L 150B411
150B415
150B422 150B437 150B475 200B47.5
200B411
200B415 200B422 250B611 250B415 300B615
PUMP Discharge Bore   mm 150 200 250 300
Discharge Connection Threaded JIS 10kg/cm 2  Flange JIS 10kg/cm 2  Flange
Impeller Shrouded
Single-channe
Shrouded Two-channel
Axial Gap Radial Gap Axial Gap Radial Gap Axial Gap Radial Gap Axial Gap Radial Gap
Gray Cast Iron
Suction Cover Gray Cast Iron
Mouth Ring & Wear Ring - Gray Cast Iron -
Oil Seal    Q'ty Single Triple Single - Single -
Nitrile Butadiene Rubber Nitrile
Butadiene
Rubber
Labyrinth Ring - 304
Stainless
Steel
-
Casing Gray Cast Iron
Shaft Seal Dual Inside Mechanical Seals (with Oil Lifter)
Silicon Carbide
MOTOR Type Continuous-duty Rated, Dry-type Induction Motor
Output     kW 7.5 11
15
22 37 75 7.5
11
15 22 11 15
Phase Three
Pole 4 6 4 6
Speed (S.S.)     min -1
50/60Hz 
1500/1800 1000/1200 1500/1800 1000/1200
Insulation F B F B
Starting Method D.O.L.* 2 Star-Delta D.O.L.* 2
Star-Delta
Star-Delta
Motor Protector
(built-in)
CTP MTP CTP
MTP
MTP
Leakage Sensor
(built-in)
- Electrode -
Lubricant    ml 422 4800 5400
5700
4600 9500 9400 4800
6500
5500 4600 6000 5500 6000
Turbine Oil (ISO VG32)
Frame Gray Cast Iron
Outor Cover - Rolled Steel -
Shaft 420 Stainless Steel
Power Cable     m 8 10 8 10 8
Chloroprene Rubber
Dry Weight*
50/60Hz
Free Standing     kg 205 200 245
266
327 640 1180 207
253
291 323 430 411 550
Guide Rail Fitting     kg 175 175 215
236
298 540 1140 212
258
276 289 390 371 520

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