TSWA Horizontal Multistage Centrifugal Pump

TSWA Horizontal Multistage Centrifugal Pump

TSWA Horizontal Multistage Centrifugal Pump | Compact multistage boosting for clean-water duty

  • High-head multistage boosting: Stable pressure build for boosting and transfer service.
  • Compact horizontal layout: Small footprint for skid integration and tight installations.
  • Smooth, stable running: Dual-end bearing support for controlled vibration.
  • Install/service friendly: Horizontal inlet / vertical outlet; easy access for maintenance.
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Product Overview

TSWA Series Horizontal Multistage Centrifugal Pump is a horizontal segmented high-head centrifugal pump designed for clean water and similar non-corrosive liquids.

It solves insufficient system pressure in high static head and long-distance pipeline systems by staged hydraulic energy accumulation.

It is used in boiler feed systems, high-rise water boosting networks, industrial process circulation systems, and long pipeline pressurization applications.

✔ Contact our engineering team for duty-based configuration support.

Model Designation

TSWA Horizontal Multistage Centrifugal Pump

Applications

Typical Operating Scenarios

• Boiler feedwater pressurization systems

• High-rise building constant-pressure boosting networks

• Industrial cooling and process water circulation loops

• Long-distance clean water transfer pipelines

• Equipment auxiliary high-pressure water supply systems

Engineering Advantages

• Segmented multistage casing structure → Flexible head configuration while maintaining structural rigidity and sealing reliability

• Guide vane hydraulic diffuser design → Stable performance curve and predictable hydraulic efficiency across duty range

• Horizontal shaft with dual bearing support → Reduced vibration and improved long-term mechanical stability

• Balance disc axial thrust compensation → Controlled axial load and extended bearing service life

✔ Engineered hydraulic design ensures predictable system integration and long-term operational stability.

System Components

TSWA Series Horizontal Multistage Centrifugal Pump：

• Suction casing section
• Intermediate stage casing segments 
• Discharge casing section
• Multistage impeller assembly 
• Guide vane diffuser set 
• Pump shaft and shaft sleeves
• Balance disc assembly 
• Mechanical seal or packing seal chamber 
• Flexible coupling and motor assembly

Technical Specifications

Service Conditions

• Medium: Clean water or liquids with similar physical and chemical properties

• Solid content: ≤ 0.1%

• Installation: Indoor or protected outdoor installation

Operating Conditions

  •  Flow rate: 18 – 155 m³/h
  •  Head: 18.4 – 270 m
  •  Power range: 2.2 – 200 kW ✓
  •  Speed: 1450 rpm ✓
  •  Liquid temperature: ≤ 80 °C ✓
  •  Working pressure: ≤ 3.0 MPa ✓
  •  Stages: 2 – 12
  •  Single-Stage Head: 9.2 / 11.5 / 15.6 / 21.6 / 30 m

Detailed parameter tables are provided below.

Installation & Dimensions

Outline Drawing

TSWA Horizontal Multistage Centrifugal Pump

Performance Data

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

Performance Curves

TSWA Horizontal Multistage Centrifugal Pump

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 Diagram

TSWA Horizontal Multistage Centrifugal PumpPerformance Data（2）

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 / / / / / / / / / / /

How to Select a Pump Model

  1. Determine required duty point including flow rate and total dynamic head with pipeline losses.
  2. Verify available NPSH exceeds required NPSH to prevent cavitation.
  3. Select stage number according to required head range and pressure class.
  4. Confirm allowable working pressure matches system design pressure.
  5. Select sealing type based on medium temperature and operating condition.
✔ Model selection should be determined according to actual duty point and system hydraulic requirements.

Engineering Notes

• Pump foundation must ensure rigid support and shaft alignment tolerance control.

• Suction pipeline diameter should not be smaller than pump inlet diameter.

• Avoid throttling on suction side to maintain adequate NPSH margin.

• Install check valve on discharge line for high-head systems.

• Flexible coupling alignment must be verified before commissioning.

Compliance & Quality Assurance

• Factory hydraulic performance test before shipment

• Rotor dynamic balance test

• Hydrostatic pressure test on casing sections

• Axial thrust balance verification

• Optional third-party inspection available

Safety Notice

• Do not operate under dry-running condition

• Ensure pump is fully primed before startup

• Do not exceed allowable working pressure

• Disconnect power before maintenance

OEM & Customization

This horizontal multistage centrifugal pump series supports engineered configuration and duty-based matching. Technical adjustments can be made according to system requirements and installation conditions.

Available options include:

• Motor voltage & frequency 
• Mechanical seal type and configuration 
• Wetted parts material selection
• Baseplate configuration 
• Instrumentation port

Configuration is determined based on duty point and project specifications.

FAQs

Q1: Can the pump operate under VFD control?
Yes, VFD operation is permitted provided NPSH margin and minimum flow requirements are maintained.

Q2: What is the maximum allowable working pressure?
The allowable working pressure is ≤ 3.0 MPa depending on stage configuration.

Q3: What sealing options are available?
Packing seal and mechanical seal configurations are available.

Q4: How is axial thrust controlled in this pump?
Axial thrust is compensated by a balance disc mechanism.

Q5: What is the applicable liquid temperature range?
Maximum liquid temperature is ≤ 80 °C.

Q6: Is reverse rotation permitted?
Reverse rotation is not permitted and may cause hydraulic failure.

Q7: What is the minimum required NPSH margin?
Available NPSH must exceed required NPSH by system design safety margin.