TSWA Horizontal Multistage Centrifugal Pump

TSWA Horizontal Multistage Centrifugal Pump

Model Code Explanation Product Introduction The TSWA series horizontal low-speed multistage clean water pump is desi...

Product Description

Model Code Explanation

TSWA Horizontal Multistage Centrifugal Pump type 1

Product Introduction

The TSWA series horizontal low-speed multistage clean water pump is designed for conveying clean water and liquids with similar physical and chemical properties, free of solid particles.
It is mainly used for high-pressure water supply, high-rise building water delivery, and industrial or mining drainage.
The pump offers a flow range from 10–155 m³/h, head range 15–300 m, motor power 2.2–200 kW, and inlet/outlet sizes 50–150 mm.
The medium temperature for TSWA pumps must not exceed 80°C.


Product Features

  1. Compact horizontal multistage design with small footprint, attractive appearance, and reduced construction cost.

  2. Rotor components supported by rolling bearings on both ends, ensuring smooth pump operation.

  3. Horizontal inlet and vertical outlet configuration, simplifying piping connections.

  4. Horizontal motor structure for easy maintenance and servicing.


Product Applications

Ideal for:
• Domestic water supply for high-rise buildings
• Fire-fighting constant-pressure systems
• Automatic sprinkler and water curtain systems
• Industrial and mining water supply and drainage
• Long-distance water transfer
• Equipment supporting water circulation
• General process water applications


Operating Conditions

  1. Suitable for clean water or similar liquids; solid impurities ≤0.1% by volume, max particle size ≤2 mm.

  2. Medium temperature: –15°C to +80°C.

  3. System working pressure ≤ 3.0 MPa (inlet pressure + operating pressure ≤3.0 MPa).

  4. Ambient temperature ≤40°C; relative humidity ≤95%.

  5. Since the pump uses cast iron components, the medium must not be strongly corrosive.
    Note: If the liquid contains fine particles or is corrosive, please inform us when ordering so a more suitable configuration can be provided.


Structure Description

  1. Multi-stage sectional type pump with horizontal inlet and vertical outlet; available in diameters 50, 75, 100, 125, and 150 mm. Users can select different diameters and stages to meet required flow and head.

  2. Main components include the suction section, middle sections, guide vanes, impellers, discharge section, bearing body, and sealing components.

  3. The rotor assembly includes a medium-carbon steel shaft, cast iron impellers, balance plate, and sleeves. Supported by grease-lubricated rolling bearings on both ends, ensuring stable, low-noise, low-vibration operation.

  4. Paper gaskets and tension bolts seal joint surfaces of suction, middle, and discharge sections. A soft packing seal, rubber water-blocking ring, and O-ring prevent leakage into the shaft sleeve chamber.

  5. Wear-resistant parts such as impeller wear rings and guide vane sleeves are used to prevent abrasion; these should be replaced once the clearance exceeds the specified limit.

  6. The TSWA pump and motor are mounted on a common cast iron base, transmitting torque through an elastic coupling.

 

Structure Diagram

TSWA Horizontal Multistage Centrifugal Pump type jiegoushiyitu 1

 

No.
Name
Material
No.
Name
Material
No.
Name
Material
No.
Name
Material
1
Coupling
HT200
7
Guide Vane
HT200
13
Balance Plate
HT200
19
Right Bearing Cover
HT200
2
Left Bearing Cover
HT200
8
Middle Section
HT200
14
Packing Body
HT200
20
Left Bearing Cover
Q235
3
Left Bearing Seat
HT200
End Guide Vane
HT200
15
Right Bearing Seat
HT200
21
Bearing
Tin Bronze
Tin bronze
4
Left Packing Cover
HT200
10
Outlet Section
HT200
16
Right Packing Cover
HT200
22
Left Bearing Sleeve
Q235
5
Inlet Section
HT200
11
Balance Section
HT200
17
Right Packing Sleeve
Q235
23
Left Packing Sleeve
Q235
6
Impeller
HT200
12
Balance Ring
HT200
18
Right Bearing Sleeve
Q235
24
Shaft
45 or 2Cr13

 

Pump selection chart

TSWA Horizontal Multistage Centrifugal Pump type xingputu 1

Performance Parameters

Model
Stages
Flow Rate
Head
Speed
Power (kW)
Efficiency
Permissible Suction Vacuum
NPSH
Weight
m3/h
L/S
m
r/min
Shaft Power
Motor Power (kW)
%
m
m
kg
50TSWA18-9.2*2
2
18
5
18.4
1450
1.37
2.2
66
7.2
3.1
135
50TSWA18-9.2*3
3
18
5
27.6
1450
2.05
3
66
7.2
3.1
155
50TSWA18-9.2*4
4
18
5
36.8
1450
2.73
4
66
7.2
3.1
175
50TSWA18-9.2*5
5
18
5
46
1450
3.42
5.5
66
7.2
3.1
195
50TSWA18-9.2*6
6
18
5
55.2
1450
4.1
5.5
66
7.2
3.1
215
50TSWA18-9.2*7
7
18
5
64.4
1450
4.79
7.5
66
7.2
3.1
235
50TSWA18-9.2*8
8
18
5
73.6
1450
5.47
7.5
66
7.2
3.1
155
50TSWA18-9.2*9
9
18
5
82.8
1450
6.15
7.5
66
7.2
3.1
275
50TSWA18-9.2*10
10
18
5
92
1450
6.84
11
66
7.2
3.1
295
50TSWA18-9.2*11
11
18
5
101.2
1450
7.52
11
66
7.2
3.1
315
50TSWA18-9.2*12
12
18
5
110.4
1450
8.2
11
66
7.2
3.1
335
Model
Stages
Flow Rate
Head
Speed
Power (kW)
Efficiency
Permissible Suction Vacuum
NPSH
Weight
m3/h
L/S
m
r/min
Shaft Power
Motor Power (kW)
%
m
m
kg
75TSWA36-11.5*2
2
36
10
23
1450
3.22
5.5
70
7.2
3
75TSWA36-11.5*3
3
36
10
34.5
1450
4.83
7.5
70
7.2
3
75TSWA36-11.5*4
4
36
10
46
1450
6.45
11
70
7.2
3
75TSWA36-11.5*5
5
36
10
57.5
1450
8.06
11
70
7.2
3
75TSWA36-11.5*6
6
36
10
69
1450
9.67
15
70
7.2
3
75TSWA36-11.5*7
7
36
10
80.5
1450
11.28
15
70
7.2
3
75TSWA36-11.5*8
8
36
10
92.5
1450
12.89
18.5
70
7.2
3
75TSWA36-11.5*9
9
36
10
103.5
1450
14.5
18.5
70
7.2
3
75TSWA36-11.5*10
10
36
10
115
1450
16.12
22
70
7.2
3
75TSWA36-11.5*11
11
36
10
126.5
1450
17.73
22
70
7.2
3
Model
Stages
Flow Rate
Head
Speed
Power (kW)
Efficiency
Permissible Suction Vacuum
NPSH
Weight
m3/h
L/S
m
r/min
Shaft Power
Motor Power (kW)
%
m
m
kg
100TSWA69-15.6*2
2
69
19.2
31.2
1450
8.03
11
73
7
3.3
100TSWA69-15.6*3
3
69
19.2
46.8
1450
12.05
15
73
7
3.3
100TSWA69-15.6*4
4
69
19.2
62.4
1450
16.07
22
73
7
3.3
100TSWA69-15.6*5
5
69
19.2
78
1450
20.09
30
73
7
3.3
100TSWA69-15.6*6
6
69
19.2
93.6
1450
24.11
30
73
7
3.3
100TSWA69-15.6*7
7
69
19.2
109.1
1450
28.13
37
73
7
3.3
100TSWA69-15.6*8
8
69
19.2
124.8
1450
32.14
45
73
7
3.3
100TSWA69-15.6*9
9
69
19.2
140.4
1450
36.16
45
73
7
3.3
100TSWA69-15.6*10
10
69
19.2
156
1450
40.18
55
73
7
3.3
Model
Stages
Flow Rate
Head
Speed
Power (kW)
Efficiency
Permissible Suction Vacuum
NPSH
Weight
m3/h
L/S
m
r/min
Shaft Power
Motor Power (kW)
%
m
m
kg
125TSWA90-21.6*2
2
90
25
43.2
1450
14.32
22
74
6.8
3.4
125TSWA90-21.6*3
3
90
25
64.8
1450
21.48
30
74
6.8
3.4
125TSWA90-21.6*4
4
90
25
86.4
1450
28.63
45
74
6.8
3.4
125TSWA90-21.6*5
5
90
25
108
1450
35.79
55
74
6.8
3.4
125TSWA90-21.6*6
6
90
25
129.6
1450
42.95
75
74
6.8
3.4
125TSWA90-21.6*7
7
90
25
151.2
1450
50.11
75
74
6.8
3.4
125TSWA90-21.6*8
8
90
25
172.8
1450
57.27
90
74
6.8
3.4
125TSWA90-21.6*9
9
90
25
194.4
1450
64.43
90
74
6.8
3.4
125TSWA90-21.6*10
10
90
25
216
1450
71.59
90
74
6.8
3.4
Model
Stages
Flow Rate
Head
Speed
Power (kW)
Efficiency
Permissible Suction Vacuum
NPSH
Weight
m3/h
L/S
m
r/min
Shaft Power
Motor Power (kW)
%
m
m
kg
150TSWA155-30*2
2
155
43
60
1450
32.91
45
77
7.7
2.5
150TSWA155-30*3
3
155
43
90
1450
49.37
75
77
7.7
2.5
150TSWA155-30*4
4
155
43
120
1450
65.82
90
77
7.7
2.5
150TSWA155-30*5
5
155
43
150
1450
82.28
110
77
7.7
2.5
150TSWA155-30*6
6
155
43
180
1450
98.74
132
77
7.7
2.5
150TSWA155-30*7
7
155
43
210
1450
115.19
132
77
7.7
2.5
150TSWA155-30*8
8
155
43
240
1450
131.19
160
77
7.7
2.5
150TSWA155-30*9
9
155
43
270
1450
148.1
200
77
7.7
2.5

 

Installation Dimensions

TSWA Horizontal Multistage Centrifugal Pump type cicun 1

Model
Stages
Pump Dimensions (H2 = B)
Base Dimensions
Inlet & Outlet Flange
L
L1
L2
B
H3
L3
L4
L5
B1
B2
4-φb
D
D1
Dn
n-φd
50TSWA18-9.2*2
2
1087
160
145
230
480
901
600
33
335
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*3
3
1152
225
210
230
480
901
600
33
335
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*4
4
1237
290
275
230
480
974
640
128
375
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*5
5
1377
355
340
230
490
1153
740
132
430
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*6
6
1442
420
405
230
490
1153
740
197
430
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*7
7
1547
485
470
230
490
1321
840
197
430
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*8
8
1612
550
535
230
490
1321
840
262
430
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*9
9
1677
615
600
230
490
1386
860
297
430
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*10
10
1827
680
665
230
490
1593
900
362
430
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*11
11
1930
745
730
230
490
1593
1000
427
430
430
4-φ25
160
125
50
4-φ18
50TSWA18-9.2*12
12
1957
810
795
230
490
1658
1200
462
430
430
4-φ25
160
125
50
4-φ18
Model
Stages
Pump Dimensions (H2 = B)
Base Dimensions
Inlet & Outlet Flange
L
L1
L2
B
H3
L3
L4
L5
B1
B2
4-φb
D
D1
Dn
n-φd
75TSWA36-11.5*2
2
1241
177
180
250
535
1046
690
89
410
475
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*3
3
1361
257
260
250
545
1046
690
128
410
475
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*4
4
1526
337
340
250
545
1284
830
171
475
475
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*5
5
1606
417
420
250
545
1284
830
211
475
475
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*6
6
1731
497
500
250
545
1488
980
245
475
475
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*7
7
1811
577
580
250
545
1488
980
245
475
475
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*8
8
1916
657
660
250
560
1653
1150
239
480
480
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*9
9
1996
737
740
250
560
1653
1150
239
480
480
4-φ25
195
160
80
4-φ18
75TSWA36-11.5*10
10
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
75TSWA36-11.5*11
11
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
Model
Stages
Pump Dimensions (H2 = B)
Base Dimensions
Inlet & Outlet Flange
L
L1
L2
B
H3
L3
L4
L5
B1
B2
4-φb
D
D1
Dn
n-φd
100TSWA69-15.6*2
2
1575
255
200
310
610
1322
900
100
505
505
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*3
3
1720
355
300
310
610
1322
900
149
505
505
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*4
4
1885
455
400
310
610
1463
975
200
505
505
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*5
5
2050
555
500
310
620
1701
1240
202
525
525
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*6
6
2150
655
600
310
620
1701
1240
157
525
525
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*7
7
2295
755
700
310
630
1959
1450
198
565
565
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*8
8
2420
855
800
310
640
1959
1450
199
565
565
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*9
9
2520
955
900
310
640
2059
1550
199
565
565
4-φ30
230
190
100
8-φ23
100TSWA69-15.6*10
10
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
Model
Stages
Pump Dimensions (H2 = B)
Base Dimensions
Inlet & Outlet Flange
L
L1
L2
B
H3
L3
L4
L5
B1
B2
4-φb
D
D1
Dn
n-φd
125TSWA90-21.6*2
2
1740
270
205
320
670
1312
990
220
500
500
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*3
3
1890
370
305
320
670
1449
1000
230
500
500
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*4
4
2060
470
405
320
680
1603
1100
240
520
520
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*5
5
2250
570
505
320
695
1774
1170
270
570
520
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*6
6
2420
670
605
320
725
2005
1260
305
630
520
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*7
7
2520
770
705
320
725
2005
1260
305
630
520
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*8
8
2670
870
805
320
725
2243
1430
305
630
570
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*9
9
2770
970
905
320
725
2243
1430
305
630
520
4-φ30
270
220
125
8-φ25
125TSWA90-21.6*10
10
/
/
/
/
/
/
/
/
/
/
/
/
/
/
/
Model
Stages
Pump Dimensions (H2 = B)
Base Dimensions
Inlet & Outlet Flange
L
L1
L2
B
H3
L3
L4
L5
B1
B2
4-φb
D
D1
Dn
n-φd
150TSWA155-30*2
2
1964
236
237
350
720
1437
1000
80
720
575
4-φ30
280
240
150
8-φ23
150TSWA155-30*3
3
2234
350
352
350
735
1735
1165
148
735
675
4-φ30
280
240
150
8-φ23
150TSWA155-30*4
4
2399
465
467
350
745
1922
1260
215
745
675
4-φ30
280
240
150
8-φ23
150TSWA155-30*5
5
2664
580
582
350
780
2129
1470
212
780
765
4-φ30
280
240
150
8-φ23
150TSWA155-30*6
6
2829
695
697
350
/
/
/
/
/
/
/
/
/
/
/
150TSWA155-30*7
7
2944
810
812
350
/
/
/
/
/
/
/
/
/
/
/
150TSWA155-30*8
8
3019
925
927
350
/
/
/
/
/
/
/
/
/
/
/
150TSWA155-30*9
9
3224
1040
1042
350
/
/
/
/
/
/
/
/
/
/
/

Installation Instructions

(I) Preparations Before Installation:

Prepare installation tools and lifting equipment.

Check whether any part of the pump unit has loosened or been damaged during transportation.

Check whether the foundation is level.

(II) Installation Sequence:

When the unit arrives at the site, if it comes with a base, the pump and motor have already been aligned at the factory. Therefore, it is not necessary to remove them during leveling, making the installation very convenient.

Place the base on the foundation, place wedge-shaped steel plates near the anchor bolts, and raise the base by 20–40 mm for subsequent leveling and cement grouting.

Use a level gauge to check the flatness of the base. After leveling, fill the base with cement grout. When the cement dries, check the level again.

For units with larger power, the pump, motor, and base may be packaged separately for easy transportation. In this case, the user must install and align the pump unit by following the method below:
a. Clean the supporting surface of the base and the mounting surfaces of the pump and motor, then place the pump and motor on the base.
b. Adjust the pump shaft to level position and fix the pump to the base with bolts to prevent movement.
c. Lift the motor, align the motor coupling with the pump coupling, and lower the motor into the correct position on the base.
d. Adjust the coupling gap to about 5 mm and check whether the motor shaft and pump shaft are aligned. Place a straightedge on the coupling—both coupling outer circles should be flush. If not, adjust the position of the motor or pump, or use shims to correct alignment.
e. To check installation accuracy, use a feeler gauge to measure the gap between coupling faces at several positions along the circumference. The difference between the maximum and minimum values must not exceed 0.3 mm, and the difference between center lines (up/down/left/right) must not exceed 0.1 mm.

If the unit is supplied without a base, it must be installed directly on the foundation. The method is similar to step 4, but extra attention is required for alignment.

(III) Installation Precautions:

The pipeline must not exert force on the pump during installation, otherwise pump damage may occur.

Anchor bolts must be tightened during installation. Periodically check them to avoid loosening, which may cause severe vibration during pump operation.

Before installation, check whether there are any hard objects (stones, iron sand, etc.) inside the pump passage to avoid damaging flow parts during operation.

For convenient maintenance and safe operation, install a regulating valve and pressure gauge on both inlet and outlet pipelines.
For high-head pumps, install a check valve before the outlet gate valve to prevent water hammer during sudden power failure and ensure long-term stable operation.

When used under suction conditions, a foot valve must be installed. The inlet pipeline should not have excessive bends and must be free of leakage to avoid affecting suction performance.

To prevent debris from entering the pump and blocking the flow passage, a filter must be installed before the pump inlet.

Before connecting the pipeline, rotate the pump rotor manually — it should move freely with no friction or jamming.

The pump flange is designed according to 2.5 MPa standards; select matching pipeline flanges accordingly.

Startup, Shutdown & Operation
1. Preparations Before Startup

Manually rotate the pump rotor—rotation should be flexible and free of friction.

Open the inlet valve, close the outlet valve, remove air from the pump, and fill it with liquid.

Jog the motor to confirm rotation direction. If incorrect, swap any two motor wires.

2. Startup & Operation

Fully open the inlet valve and close the outlet valve.

Start the motor. After the pump reaches full speed, gradually open the outlet valve and adjust it to the required operating condition.

Check readings of all instruments.
Bearing temperature must not exceed 75°C and must be no more than 35°C above ambient.

The normal leakage from the packing chamber is about 15 ml/min. Adjust the packing gland as needed.

If abnormal temperature rise, vibration, or noise occurs, stop the pump immediately and inspect the cause.

3. Shutdown Procedure

Slowly close the outlet valve and cut off the power supply.

Close the inlet valve.

If ambient temperature is below 0°C, drain all liquid to prevent pump casing from freezing and cracking.

For long-term shutdown, disassemble, clean, and properly store the pump.

Maintenance & Care

The inlet pipeline must be completely sealed—no leakage of air or water is allowed.

Long-term cavitation operation is strictly prohibited.

Do not allow the pump to operate for long periods at excessive flow causing motor overload.

Regularly check motor current to ensure operation within rated working conditions.

The pump must be monitored by dedicated personnel to avoid accidents.

Lubricate bearings every 500 hours of operation.

After long-term use, mechanical wear may cause increased noise and vibration. Stop the pump for inspection and replace worn parts and bearings if necessary. Typical overhaul period is one year.

In case of failure during operation, troubleshoot according to the provided fault table.
If the issue cannot be resolved, do not disassemble the pump on your own—contact our service department or authorized repair center.

OEM & Custom Solutions

We offer OEM/ODM services including customization of voltage (220V/380V/415V), materials (cast iron, stainless steel, bronze), and flange standards (DIN/ANSI/JIS). Optional coatings, mechanical seal types, and bearing brands (SKF, NSK) are available. All products are ISO9001 and CE certified for export.

FAQs for Oversea Buyers

Q: What type of liquids can TSWA pumps handle?
A: Clean water and similar liquids with temperatures up to 80°C.

Q: What’s the difference between TSWA and IS pumps?
A: TSWA is multistage for high head applications, while IS is single stage for general supply.

Q: What are the main applications?
A: Building water supply, firefighting systems, factory circulation, and irrigation.

Q: What’s the efficiency level?
A: Up to 82%, depending on model and operating conditions.

Q: Can it be customized for export standards?
A: Yes, materials, voltage, and flange standards can be customized for overseas projects.

Q: Which certifications are available?
A: ISO9001 and CE certificates ensure international compliance.

Q: What about spare parts availability?
A: We provide full spare parts support and long-term technical service for global buyers.