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Canned motor pump

    Canned motor pump

    The Canned Motor Pump is a highly reliable and leak-free industrial pump designed for safe handling of corrosive, toxic, and volatile fluids. Featuring a hermetically sealed motor and pump assembly, it eliminates the need for mechanical shaft seals, ensuring zero leakage and reduced maintenance. Widely used in chemical, pharmaceutical, and petrochemical industries, this pump provides efficient fluid transfer, stable performance, and enhanced operational safety. Its compact design, corrosion-resistant materials, and energy-efficient operation make it an ideal choice for critical process systems...
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1. Product introduction

The Canned motor pump (i.e. canned motor pump) adopts a unique mechanism that is totally enclosed and has no mechanical seal. The stator and rotor are respectively shielded and sealed with stainless steel sleeves, and the liquid transported can enter the motor for cooling, so as to solve the problems such as easy leakage of transmission medium, environmental pollution, poor operation reliability, and difficult maintenance caused by the use of mechanical seals in ordinary pipeline electric pumps. The rotating part is lubricated by graphite bearing (or other materials can be customized) and transmission medium, which is a low-noise, green and environment-friendly upgrading product. Due to its low noise, no leakage, reliable operation, maintenance free and other advantages, it has won the trust of users.

2. Product pictures

Canned-motor-pump

3. Scope of application

Shielded electric pumps are widely used in liquid transportation, wastewater treatment and acid addition processes in chemical, pharmaceutical, petroleum, metallurgy, electric power, electroplating, pickling, pesticide, paper making and other industries. This pump can transport flammable, explosive and volatile dangerous media such as butanol, dimethylamine, dichloroethane, cyclohexanone, ammonia, petroleum ether, propane, dimethylformamide, ethyl acetate, etc. It is the most advanced leak free pump at present.

4. Product Features

(1) Type B canned motor pump is a basic type, and the pump body is directly mounted on the motor flange.

(2) The BA type canned motor pump is a basic type, and the pump body is connected with the motor flange through the connector.

(3) B-V type shielded electric pump is a basic type, and the circulating pipe mode of the pump is changed to axial internal circulation.

(4) More forms of canned motor pumps can transport flammable, easy to vaporize, high temperature, crystallization and other special media.

5. Model Meaning

The canned motor pump is manufactured by our company according to different media, including basic type, reverse circulation type, high temperature separation type, self-priming type, high melting point type, mud sealing type, liquid sealing type, liquid injection type and special type. According to different parameters, our factory configures different forms of canned motor pumps. Please call us for details.

6. Precautions

(1) Yongqiu shielded electric pump is strictly prohibited from no-load operation.

(2) Before starting the Yongqiu shielded pump, it is necessary to thoroughly remove the rust and solid foreign matters in the device. To ensure that the clean medium enters the pump, please install a filter at the pump inlet, and clean the filter regularly according to the cleanliness of the medium, to prevent the pump from being empty due to filter blockage, thus effectively preventing the motor from burning.

(3) The canned motor pump with cold water jacket must be connected with cooling water according to the specified cooling water flow, and then run.

(4) The normal working state of the canned motor pump must conform to the data on the nameplate of the motor pump.

(5) Before the canned motor pump operates, the gas in the device and pump shall be fully discharged.

(6) When the actual amount of canned motor pump is less than the minimum flow, a bypass pipe should be set, otherwise it should not be started.

(7) Before using the canned motor pump, the operating process should be understood in detail to avoid misoperation and personal accidents


Canned motor pump

The Canned Motor Pump is a highly reliable, Hermetically sealed pump designed for safe and efficient fluid transfer in various industrial processes. Its leak-free design and maintenance-free operation make it ideal for handling corrosive, toxic, or volatile fluids. This pump is widely used in chemical, pharmaceutical, petrochemical, and process industries, ensuring safe, efficient, and continuous operation.


Product Overview

The Canned Motor Pump integrates a pump and motor into a single sealed unit, eliminating the need for traditional mechanical shaft seals. This design prevents fluid leakage, reduces maintenance, and ensures operational safety.

Key Features:

  • Hermetically sealed motor prevents leakage and contamination

  • Corrosion-resistant materials for chemical and high-temperature applications

  • Compact and modular design for flexible installation

  • Maintenance-free operation under normal working conditions

  • Energy-efficient and stable performance

Typical Applications:

  • Chemical processing and transfer of aggressive liquids

  • Pharmaceutical manufacturing requiring contamination-free handling

  • Petrochemical processes including toxic and flammable fluids

  • Cooling and circulation of high-temperature liquids in industrial systems


Canned-motor-pump

Operation Instructions

Correct operation of the Canned Motor Pump is essential to maintain efficiency and longevity.

Startup Procedure:

  1. Check the pump installation – Ensure it is mounted securely on a level base.

  2. Inspect fluid and system conditions – Verify compatibility and ensure the system is free of debris.

  3. Connect electrical supply – Ensure voltage and frequency match the pump specifications.

  4. Prime the pump if required – Some models are self-priming, but initial fluid filling may be needed.

  5. Start the pump – Monitor vibration, noise, and current draw during initial operation.

Operational Tips:

  • Avoid running the pump dry, as it can damage internal components.

  • Maintain stable inlet pressure to prevent cavitation.

  • Monitor temperature and flow rate for consistent performance.

  • Conduct regular inspections to ensure no leaks or unusual noise occurs.

Shutdown Procedure:

  1. Gradually reduce flow and allow the pump to empty residual fluid.

  2. Turn off the electrical supply and disconnect if needed.

  3. Inspect the pump for any wear or unusual conditions.


Product Applications

The Canned Motor Pump is versatile and widely used in industries where safety, reliability, and corrosion resistance are critical.

Chemical Industry:

  • Transfers aggressive acids, alkalis, and solvents without risk of leakage.

  • Maintains high process safety and environmental protection.

Pharmaceutical Industry:

  • Ensures sterile and contamination-free fluid handling.

  • Suitable for handling reactive or sensitive chemicals.

Petrochemical Industry:

  • Transfers flammable or toxic liquids safely.

  • Complies with hazardous area requirements.

Industrial Processes:

  • Circulation of high-temperature heating fluids.

  • Cooling and lubrication systems requiring reliable and leak-free operation.


Specifications and Models

The Canned Motor Pump is available in a variety of models and configurations to meet specific industrial needs.

ParameterSpecification RangeNotes
Flow Rate0.5–150 m3/hModel-dependent
Head5–80 mAdjustable based on application
Temperature Range-20°C to 200°CMaterial-dependent
Pressure Rating1.0–16 MPaBased on casing and internal components
Motor Power0.37–55 kWSingle-phase or three-phase options
MaterialsStainless steel, alloy coatingsCorrosion and chemical resistance
Seal TypeHermetically canned (no mechanical seals)Ensures leak-free operation
Installation TypeHorizontal / VerticalBased on process layout

Quality Assurance and Inspection

Each Canned Motor Pump undergoes rigorous quality control to ensure performance, safety, and compliance with industrial standards.

Inspection and Testing:

  • Hydraulic performance test – Verifies flow rate and head.

  • Leakage test – Confirms hermetic sealing.

  • Electrical testing – Checks motor insulation and efficiency.

  • Material inspection – Ensures corrosion resistance and chemical compatibility.

Certification and Compliance:

  • ISO 9001 Quality Management System certified

  • Compliance with CE, ATEX, and relevant industrial safety standards

  • Documentation provided with each unit, including inspection and test reports

Maintenance Recommendations:

  • While the pump is maintenance-free, periodic inspection is recommended for:

    • Visual check for corrosion or wear

    • Monitoring motor current and vibration

    • Ensuring fluid compatibility and cleanliness


Advantages of Canned Motor Pump

  1. Leak-Free Operation – Eliminates risk of hazardous leaks in chemical and petrochemical processes.

  2. Compact Design – Integrates pump and motor into a single unit, saving space.

  3. Maintenance-Free – Reduces downtime and operational costs.

  4. Corrosion and Temperature Resistant – Handles a wide range of aggressive fluids safely.

  5. Energy-Efficient – Optimized motor and hydraulic design reduce energy consumption.

  6. Safe for Hazardous Areas – Hermetically sealed design suitable for explosive environments.


Conclusion

The Canned Motor Pump is an essential solution for industries requiring safe, reliable, and efficient fluid transfer. Its hermetically sealed design, corrosion resistance, and compact structure make it ideal for chemical, pharmaceutical, petrochemical, and industrial applications. By following proper installation, operation, and inspection procedures, users can ensure long-term efficiency, minimal maintenance, and safe process operation.

This pump provides a highly reliable, energy-efficient, and environmentally safe solution for modern industrial processes.

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Phone:+86 15868545868/+8618968868555

whatsapp:+86 15868545868/+8618968868555

Email:haiwan@haiwanpump.cn

Add:Meiao Street, Qiaoxia Town, Yongjia County Wenzhou City, Zhejiang, China


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