TSWA Horizontal Multistage Centrifugal Pump

Product Overview

The TSWA Series Horizontal Low-Speed Multistage Clean Water Pump is designed for transporting clean water and liquids with physical and chemical properties similar to water, and without solid particles.
It is primarily used in high-pressure water supply, high-rise building water supply, and industrial or mining drainage applications.
The pump’s flow range is from 10–155 m³/h, with a head range of 15–300 meters, and motor power ranging from 2.2–200 kilowatts. The nominal inlet/outlet size is between 50–150 mm, with a maximum liquid temperature of 80°C.

Model Designation

Key Features

• Compact Design: The pump body adopts a compact design, occupying less space, making it suitable for high-rise buildings and industrial applications.

• Low Noise and Low Vibration: Optimized hydraulic design and bearing configuration ensure the pump operates with low noise and low vibration.

• Wide Applicability: Suitable for various clean water, hot water, high-temperature fluids, corrosive liquids, and petroleum products.

• Easy to Maintain: The optimized structural design and removable components simplify the maintenance process.

Engineering Overview

The TSWA Pump adopts a horizontal multistage sectional structure, achieving high head performance through staged pressure accumulation.
The pump can precisely match the required flow and head conditions by selecting the appropriate number of stages and nozzle diameter.
It comes with a standard transverse suction and vertical discharge design, allowing for efficient integration into piping systems.
The pump and motor are mounted on a common cast iron base and connected through an elastic coupling, ensuring stable torque transmission and continuous operation.

Typical Applications

The TSWA Series Pump is widely used in the following fields:

• Water Supply for High-rise Buildings

• Normal Pressure Firefighting Systems

• Automatic Sprinkler and Water Curtain Systems

• Industrial and Mining Water Supply and Drainage

• Long-distance Water Transport

• Equipment Cooling and Circulation Systems

• General Process Water Applications

The pump is suitable for clean water, seawater, lightly acidic or alkaline chemical liquids, and ordinary slurry media with moderate viscosity.

System Configuration

The TSWA Series Pump mainly consists of the following key components:

• Hydraulic Section: Suction part, middle section, guide blades, and discharge part

• Rotating Assembly: Shaft, impeller, balance disc, and shaft sleeve

• Bearing Assembly: Lubricated rolling bearings for smooth, low-noise operation

• Sealing System: Soft packing seals, rubber water seal rings, and O-rings for leakage control

Components and Supply

The TSWA Series Pump includes the following major components:

• Pump Housing and Impeller Assembly: Optimized hydraulic performance

• Electric Motor: Direct coupling with extended shaft

• Mechanical Seal System: Single-type or combination-type seals

• Pipeline Flanges and Structural Mounting Parts: Standard fittings for system connections

Technical Service

We offer comprehensive technical support, including installation, commissioning, and maintenance services for the TSWA Pumps. Our team ensures that the pump operates efficiently and reliably throughout its service life.

Operating Conditions

• Medium: Clean water, seawater, lightly acidic or alkaline liquids

• Maximum Viscosity: ≤100 cP

• Maximum Solid Content: ≤30%

• Cooling Requirements: External cooling water is required if the bearing housing temperature exceeds 70°C

Service Conditions

• Medium Properties: Suitable for clean water or similar liquids

• Solid Content: ≤1%, particle size ≤0.1 mm

• Bearing Lubrication: Calcium-based grease

Protection Functions

• Self-priming Ability: Optimized gas-liquid separation technology for more reliable self-priming performance.

• Temperature Monitoring: Optional external cooling water system to maintain bearing temperature within a safe range.

Selection Criteria

The selection of the pump should be based on the actual application requirements, including the type of medium, flow rate, working pressure, and temperature conditions. Ensure that the appropriate seal type and cooling solutions are selected to ensure the pump’s long-term stable operation.

Installation & Dimensions

Outline Drawing

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

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

Performance 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	/	/	/	/	/	/	/	/	/	/	/

Operating Manual

(I) Preparations Before Installation:

1. Prepare installation tools and lifting equipment.

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

3. Ensure the foundation is level.

(II) Installation Sequence:

1. Upon arrival at the site, if the unit includes a base, the pump and motor will have already been aligned at the factory. Therefore, there is no need for re-alignment during leveling, making the installation process highly efficient.

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

3. Use a level gauge to check the flatness of the base. After leveling, fill the base with cement grout. Once the cement has dried, check the level again.

4. For units with higher power ratings, the pump, motor, and base may be packaged separately for ease of transportation. In this case, follow these steps for installation and alignment:
   a. Clean the supporting surface of the base and the mounting surfaces of the pump and motor, then place the pump and motor onto the base.
   b. Adjust the pump shaft to a level position, and securely 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 its correct position on the base.
   d. Adjust the coupling gap to approximately 5 mm and check if the motor shaft and pump shaft are properly aligned. Use a straightedge to verify that both coupling outer circles are flush. If not, adjust the position of the motor or pump or use shims to correct the alignment.
   e. To verify installation accuracy, use a feeler gauge to measure the gap between the coupling faces at several points around the circumference. The difference between the maximum and minimum values should not exceed 0.3 mm, and the difference between the centerlines (up/down/left/right) should not exceed 0.1 mm.

5. If the unit does not include 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:

1. The pipeline must not exert any force on the pump during installation, as this may cause damage to the pump.

2. Anchor bolts must be tightened during installation. Periodically check to ensure they do not loosen, which could cause severe vibration during pump operation.

3. Before installation, check the pump passage for any hard objects (e.g., stones, iron sand) to prevent damage to the flow parts during operation.

4. To facilitate maintenance and ensure safe operation, install regulating valves and pressure gauges on both the inlet and outlet pipelines.

5. 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.

6. When operating under suction conditions, a foot valve must be installed. The inlet pipeline should not have excessive bends and must be free from leaks to maintain suction efficiency.

7. To prevent debris from entering the pump and blocking the flow passage, install a filter before the pump inlet.

8. Before connecting the pipeline, manually rotate the pump rotor to ensure it moves freely with no friction or jamming.

9. The pump flanges are designed according to 2.5 MPa standards, so select matching pipeline flanges accordingly.

Startup, Shutdown & Operation

1. Preparations Before Startup:

1. Manually rotate the pump rotor—ensure it rotates freely without friction.

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

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

2. Startup & Operation:

1. Fully open the inlet valve and close the outlet valve.

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

3. Check instrument readings.

4. Bearing temperature should not exceed 75°C, and should not be more than 35°C above ambient temperature.

3. Shutdown Procedure:

1. Gradually close the outlet valve and disconnect the power supply.

2. Close the inlet valve.

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

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

Maintenance & Care

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

2. Long-term cavitation operation is strictly prohibited.

3. Do not operate the pump for extended periods with excessive flow, as this could overload the motor.

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

5. The pump must be monitored by dedicated personnel to prevent accidents.

6. Lubricate bearings every 500 hours of operation.

7. 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. A typical overhaul period is one year.

8. If a fault occurs during operation, troubleshoot according to the provided fault table. If the issue cannot be resolved, do not disassemble the pump yourself—contact our service department or authorized repair center.

OEM & Custom

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

1. Q: What type of liquids can TSWA pumps handle?
   A: Clean water and similar liquids with temperatures up to 80°C.
2. 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.
3. Q: What are the main applications?
   A: Building water supply, firefighting systems, factory circulation, and irrigation.
4. Q: What’s the efficiency level?
   A: Up to 82%, depending on model and operating conditions.
5. Q: Can it be customized for export standards?
   A: Yes, materials, voltage, and flange standards can be customized for overseas projects.
6. Q: Which certifications are available?
   A: ISO9001 and CE certificates ensure international compliance.
7. Q: What about spare parts availability?
   A: We provide full spare parts support and long-term technical service for global buyers.