1. Product introduction
ISW series horizontal pipeline centrifugal pump (horizontal centrifugal pump) is an excellent hydraulic model selected by our scientific and technical personnel in conjunction with domestic pump experts, which is ingeniously combined and designed on the basis of general vertical pumps using the performance parameters of IS type centrifugal pumps. At the same time, applicable hot water, high temperature, corrosion resistant chemical pumps and oil pumps are derived on the basis of ISW type according to the use temperature, medium, etc. This series of products have the advantages of high efficiency, energy saving, low noise, reliable performance, etc. It meets the requirements of the latest JB/T53058-93 of the Ministry of Machinery. The products are designed and manufactured according to the international ISO2858 standard.
2. Product pictures
3. Scope of application
(1) ISW horizontal centrifugal pump can transport clean water and liquids with physical properties similar to water. It is suitable for industrial and urban water supply and drainage, pressurized water supply for high-rise buildings, garden sprinkler irrigation, fire pressurization, long-distance transmission, HVAC refrigeration cycle, bathroom and other cold and warm water cycle pressurization and equipment supporting. The operating temperature is T<80 ℃.
(2) ISWR hot water circulating pipe pump is suitable for pressurized circulating transmission of high-temperature hot water for boilers in metallurgy, chemical industry, textile, wood processing, paper making, hotels, bathrooms, hotels, etc., as well as circulating pumps for urban housing heating. The operating temperature is below 120 ℃.
(3) ISWH chemical stainless steel centrifugal pump is suitable for conveying corrosive liquid medium without solid particles, and is widely used in petroleum, chemical industry, metallurgy, paper making, food, pharmacy, synthetic fiber and other departments. Its service condition is - 20 ° C ≤ temperature ≤ 120 ° C.
(4) ISWB explosion-proof oil pipeline pump is specially used to transport petroleum products, such as gasoline, kerosene, diesel oil, etc. The temperature of the transported medium is - 20 ℃~+120 ℃.
4. Product Features
(1) This series of pumps are of horizontal structure, integrated with machine and pump, with beautiful appearance. Compared with ordinary horizontal pump, the floor area is reduced by 30%. If IP54 outdoor motor is used, the pump room can be used outdoors without the need of pump room.
(2) The impeller is directly arranged on the extended shaft of the motor to make the pump run more smoothly, with less vibration and noise.
(3) The shaft seal adopts high-quality mechanical seal, and the dynamic and static rings are made of new hard alloy, which is wear-resistant, leak free and has a long service life.
(4) Impellers and pump bodies are designed and manufactured with excellent hydraulic models, with low energy consumption and high efficiency.
(5) This series of horizontal pump is a back door structure, which can be overhauled without dismantling the pipeline.
5. Model Meaning
6. Specifications
7. Installation method
(1) Before installation, check whether the fasteners of the unit are loose and whether the flow passage of the pump body is blocked by foreign matters, so as to avoid damage to the impeller and pump body during the operation of the pump.
(2) During installation, the pipe weight shall not be added to the pump to avoid deformation of the pump.
(3) The foundation bolts must be tightened during installation to avoid the impact of vibration on pump performance during startup.
(4) For the convenience of maintenance and safety of use, a regulating valve is installed on the inlet and outlet pipelines of the pump and a pressure gauge is installed near the pump outlet to ensure the operation within the rated head and flow range, ensure the normal operation of the pump and increase the service life of the pump.
(5) After installation, move the motor sealing blade, and the impeller shall be free of friction sound or seizure, otherwise, the pump shall be disassembled to check the cause.
8. Precautions
(1) When the pump is used for suction, it should be equipped with a bottom valve, and the inlet pipeline should not have too many bends, and there should be no water or air leakage.
(2) Test whether the rotation direction of the motor is correct. The motor rotates clockwise when looking at the pump from the top of the motor. The test time should be short to avoid dry wear of the mechanical seal.
(3) The inlet pipe must be filled with liquid, and the pump is forbidden to operate for a long time under cavitation.
(4) When starting the pump, let the pump vent by loosening the vent screw on the pump head until a steady flow of liquid flows out of the vent hole, and then tighten the vent screw.
9. Frequently Asked Questions
(1) The water pump does not absorb water, which may be due to insufficient water injected into the pump.
(2) The insufficient flow of the water pump may be caused by the blockage of the water pump, wear of the impeller, insufficient speed, etc.
(3) Excessive pump power may be used beyond the rated flow.
(4) Noise and vibration may be caused by unstable pipeline support, gas mixed with liquid, bearing damage, etc.
10. Use needs
(1) Regularly check the pump performance (such as flow, lift, vibration, etc.) and make records. The maintenance items and the interval time between each maintenance depend on the working conditions and operating conditions of the pump.
(2) After the pump has been running for a long time, if the noise and vibration of the unit increase due to mechanical wear, it shall be stopped for inspection, and the wearing parts shall be replaced if necessary,
(3) It is prohibited to run the motor for a long time with excessive current when the pump is running at large flow.
(4) The medium conveyed by the pump shall not contain air or gas, otherwise, the flow and lift of the pump will not be measured accurately, and the parts will be damaged by grinding.
(5) The suction pipe of the pump shall be as short as possible, the pipe diameter shall be greater than or equal to the diameter of the suction inlet of the pump, and the bending radius of the suction pipe of the pump shall be as large as possible.
ISW Horizontal Pipeline Centrifugal Pump: Comprehensive Guide
The ISW Horizontal Pipeline Centrifugal Pump is a widely adopted single-stage inline pump designed for efficient fluid transportation across various industries. Its compact design, high efficiency, and quiet operation make it a reliable solution for water supply, HVAC circulation, fire protection, industrial fluid transfer, and irrigation systems.
This guide provides a complete overview of the ISW pump, covering technical services, maintenance requirements, energy-saving standards, and troubleshooting analysis. The information is tailored for engineers, buyers, and facility managers seeking professional insights and practical guidance.
The ISW pump is designed according to international ISO and DIN standards, ensuring strong adaptability for global industrial applications.
Horizontal inline design: Space-saving and easy pipeline integration.
Direct motor connection: Simplifies installation and reduces alignment errors.
Wide flow range: Suitable for clean water, non-corrosive liquids, and low-viscosity fluids.
High-efficiency impeller: Optimized for energy savings and stable hydraulic performance.
Low noise and vibration: Designed for quiet and stable operation.
Flow capacity: 1.1 – 1200 m3/h
Head: 5 – 150 m
Power: 0.37 – 250 kW
Operating temperature: -20°C to +120°C
Materials: Cast iron, stainless steel, bronze (optional)
Sealing system: Mechanical seal with leak-proof design
The ISW Horizontal Pipeline Centrifugal Pump is versatile and used in:
Municipal water supply and drainage
HVAC systems (chilled water circulation, cooling towers, heating pipelines)
Fire-fighting systems
Irrigation and agricultural water transfer
Industrial fluid handling (chemical, textile, food, and pharmaceuticals)
Booster water supply in buildings
Professional technical support ensures proper installation, operation, and long-term reliability.
Pump selection guidance based on flow, head, and fluid characteristics.
Material customization (stainless steel, bronze, or coated options) for corrosive or high-temperature environments.
System integration consulting for seamless compatibility with pipeline layouts.
On-site or remote installation guidance.
Recommendations on foundation, vibration damping, and pipeline alignment.
Electrical wiring support to ensure safe motor operation.
Warranty and spare parts supply.
Technical consultation for performance optimization.
Scheduled maintenance contracts to reduce downtime.
Routine maintenance is essential to ensure the ISW pump operates efficiently and safely.
Monitor pump noise and vibration.
Ensure the mechanical seal has no visible leakage.
Check for unusual temperature rise in the bearings or motor.
Inspect and clean the impeller and casing to prevent clogging.
Replace worn-out bearings and seals promptly.
Lubricate bearings as per manufacturer recommendations.
Tighten electrical connections to prevent overheating.
| Task | Frequency | Notes |
|---|---|---|
| Visual inspection | Daily | Check leaks, noise, vibration |
| Bearing lubrication | Every 3–6 months | Use approved lubricants |
| Impeller cleaning | Every 6 months | Prevents clogging and cavitation |
| Electrical insulation test | Every 12 months | Ensure motor safety |
| Full overhaul | Every 2–3 years | Replace critical parts |
Energy efficiency is a core requirement in modern industrial pumps.
Optimized hydraulic model improves impeller efficiency.
Precision casting process reduces internal flow resistance.
High-efficiency motors (IE2/IE3 standards) ensure reduced power consumption.
Compact pipeline layout minimizes pressure losses.
Reduced operational costs.
Lower environmental footprint.
Improved system reliability due to optimized performance.
Compliance with international energy standards.
| Pump Type | Efficiency Level | Energy Consumption |
|---|---|---|
| Traditional inline pump | Standard | Higher |
| ISW horizontal centrifugal pump | Optimized hydraulic design | 10–20% lower |
| IE3 motor-driven ISW pump | High efficiency | Up to 30% lower |
Even with high-quality design, pumps may experience issues. Below are typical causes and solutions.
| Fault | Possible Cause | Solution |
|---|---|---|
| Pump fails to start | Power supply failure, motor fault, blocked impeller | Check wiring, inspect motor, clean impeller |
| Insufficient flow | Incorrect pump selection, impeller wear, clogged suction line | Recheck design parameters, replace impeller, clean suction |
| Excessive vibration | Shaft misalignment, unbalanced impeller, loose foundation | Realign pump, balance impeller, reinforce foundation |
| Overheating | Bearing wear, lubrication failure, overload | Replace bearings, lubricate, reduce load |
| Leakage | Seal wear, improper installation | Replace seals, reinstall with proper alignment |
| Abnormal noise | Cavitation, trapped air, bearing failure | Remove air, improve suction conditions, replace bearings |
Proper installation ensures long-term performance.
Place the pump on a solid, vibration-free foundation.
Ensure pipeline alignment to avoid stress on pump housing.
Use flexible couplings where necessary.
Install a strainer at suction inlet to prevent debris entry.
Verify all electrical wiring complies with safety standards.
Start the pump with a fully primed suction line.
Avoid dry running at all times.
Monitor current draw and compare with rated power.
Gradually adjust valves to maintain stable operation.
Compact inline design: Saves installation space.
High hydraulic efficiency: Meets modern energy standards.
Durable construction: Withstands continuous operation.
Low noise and vibration: Ideal for urban and industrial use.
Wide application range: Municipal, industrial, and agricultural systems.
The ISW Horizontal Pipeline Centrifugal Pump delivers reliable performance, energy efficiency, and compact design for modern water supply and industrial applications. Built with optimized hydraulics and high-efficiency motors, it ensures stable operation with low noise, reduced energy consumption, and easy maintenance. Suitable for HVAC, fire protection, irrigation, and industrial fluid systems, this pump meets global energy-saving standards and provides long service life.
The ISW Horizontal Pipeline Centrifugal Pump is more than just a pumping device—it is a critical component for modern fluid systems. With professional technical services, clear maintenance requirements, energy-saving standards, and effective troubleshooting practices, this pump provides long-term efficiency, reliability, and safety.
By investing in ISW pumps, industries benefit from reduced operating costs, extended equipment life, and compliance with international performance standards.
Phone：+86 15868545868/+8618968868555
whatsapp：+86 15868545868/+8618968868555
Email：haiwan@haiwanpump.cn
Add：Meiao Street, Qiaoxia Town, Yongjia County Wenzhou City, Zhejiang, China
Copyright ? 2025 Zhejiang Haiwan Pump Industry Co., Ltd.
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