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
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
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.
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.
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
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
Correct operation of the Canned Motor Pump is essential to maintain efficiency and longevity.
Check the pump installation – Ensure it is mounted securely on a level base.
Inspect fluid and system conditions – Verify compatibility and ensure the system is free of debris.
Connect electrical supply – Ensure voltage and frequency match the pump specifications.
Prime the pump if required – Some models are self-priming, but initial fluid filling may be needed.
Start the pump – Monitor vibration, noise, and current draw during initial operation.
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.
Gradually reduce flow and allow the pump to empty residual fluid.
Turn off the electrical supply and disconnect if needed.
Inspect the pump for any wear or unusual conditions.
The Canned Motor Pump is versatile and widely used in industries where safety, reliability, and corrosion resistance are critical.
Transfers aggressive acids, alkalis, and solvents without risk of leakage.
Maintains high process safety and environmental protection.
Ensures sterile and contamination-free fluid handling.
Suitable for handling reactive or sensitive chemicals.
Transfers flammable or toxic liquids safely.
Complies with hazardous area requirements.
Circulation of high-temperature heating fluids.
Cooling and lubrication systems requiring reliable and leak-free operation.
The Canned Motor Pump is available in a variety of models and configurations to meet specific industrial needs.
| Parameter | Specification Range | Notes |
|---|---|---|
| Flow Rate | 0.5–150 m3/h | Model-dependent |
| Head | 5–80 m | Adjustable based on application |
| Temperature Range | -20°C to 200°C | Material-dependent |
| Pressure Rating | 1.0–16 MPa | Based on casing and internal components |
| Motor Power | 0.37–55 kW | Single-phase or three-phase options |
| Materials | Stainless steel, alloy coatings | Corrosion and chemical resistance |
| Seal Type | Hermetically canned (no mechanical seals) | Ensures leak-free operation |
| Installation Type | Horizontal / Vertical | Based on process layout |
Each Canned Motor Pump undergoes rigorous quality control to ensure performance, safety, and compliance with industrial standards.
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.
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
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
Leak-Free Operation – Eliminates risk of hazardous leaks in chemical and petrochemical processes.
Compact Design – Integrates pump and motor into a single unit, saving space.
Maintenance-Free – Reduces downtime and operational costs.
Corrosion and Temperature Resistant – Handles a wide range of aggressive fluids safely.
Energy-Efficient – Optimized motor and hydraulic design reduce energy consumption.
Safe for Hazardous Areas – Hermetically sealed design suitable for explosive environments.
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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whatsapp：+86 15868545868/+8618968868555/+8618815171262
Email：haiwan@haiwanpump.cn
Add：Meiao Street, Qiaoxia Town, Yongjia County Wenzhou City, Zhejiang, China
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