Magnetic Drive Pump

Mudisen’s magnetic drive pumps, manufactured in China, are designed for continuous transport of highly corrosive, toxic, or flammable materials in highly corrosive and leak-proof environments. Traditional mechanical seal pumps are prone to problems such as media leakage and rapid seal failure in these environments. Mudisen’s magnetic drive pumps, manufactured in China, adopt a static seal magnetic coupling shaftless design, which can handle materials containing light particles and high and low temperature corrosivity, while maintaining zero leakage and low maintenance advantages, and maintaining stable performance in chemical, electroplating, and waste gas and water treatment applications.

Advantages and disadvantages of magnetic drive pumps

Advantages of magnetic drive boards:

Zero leaks

The shaftless magnetic coupling design eliminates the common problems of seal wear and leakage in traditional mechanical seal pumps, and can handle highly corrosive, toxic, or flammable materials.

High temperature resistance

Since there is no mechanical seal, it will not be damaged by temperature changes. Secondly, for high-temperature liquids, high-temperature resistant metal or ceramic isolation sleeves can be used for isolation and protection.

Low noise

Because non-contact transmission reduces vibration and mechanical friction, magnetic pumps are generally quieter.

Easy to maintain

Since non-mechanical seals do not require regular replacement, magnetic pumps typically require less maintenance and are easy to disassemble and repair.

Extend lifespan

With its simple structure and low component wear, the static sealing system, employing isolation sleeves and corrosion-resistant inner lining components, improves the equipment’s service life under corrosive conditions.

Multiple configuration options

A variety of material configurations are available, including PP, PVDF, 316L stainless steel, and PTFE, to withstand different conditions such as strong acids, strong alkalis, and solvent corrosion. Horizontal or vertical configurations are also available to support different layouts for production line tank-side installation and closed-loop reactor circulation.

Disadvantages of magnetic drive boards

1. Magnetic drive centrifugal pumps are generally less efficient than ordinary centrifugal pumps. They typically cannot operate at flow rates below 30% of their rated flow rate, achieving optimal efficiency only under specific flow conditions. They also cannot run dry and lack self-priming capability.

2. They are unsuitable for handling abrasive materials and materials containing solids. Solid particles in the fluid can interfere with the performance of the magnetic drive pump, potentially causing pump and motor malfunctions.

3. They are more expensive than traditional pumps, but maintenance costs are lower.

Technical Specifications

Basic parameters

运行参数	规格范围
额定流量范围	0.3 m³/h – 100.0 m³/h（支持双泵头配置）
最大出口压力	1.6 MPa / 16 Bar
最大含固量处理能力	最高体积占比 80% 的固体颗粒
最大极限干吸程	9.5 米（纯真空吸力）
工作温度范围	-20°C 至 +120°C（具体取决于软管材质）

Interface and driver configuration

Standard Flange Interfaces:DN25 to DN100 (customization available to ANSI/DIN/JIS standards).

Power Supply Standards:Three-phase, 380V/50Hz or 460V/60Hz.

Motor Protection: IP55/IP66 protection ratings and ATEX explosion-proof motor options available.

Control System: VFD compatible for absolutely precise flow control.

Hose material

• NR (Natural Rubber): Ideal for extremely abrasive media, mine tailings, and sludge (-20°C to 80°C).

• EPDM (Ethylene Propylene Dioxide): Perfectly suited for highly corrosive acids and extremely aggressive chemical solvents (-14°C to 90°C).

• NBR (Nitrile Butadiene Rubber): Designed for oily sludge and animal fat environments (0°C to 80°C).

• HNBR (Hydrogenated Nitrile Butadiene Rubber): Designed for high-temperature environments and hygienic food processing (0°C to 120°C).

Comparison of Heavy-duty flexible pump Models

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Model	Max Flow	Suggested Flow	Pressure	Caliber
HRB-10	180 L/h	18–90 L/h	0.8 MPa	pagoda 16
HRB-15	600 L/h	30–315 L/h	0.8 MPa	pagoda 20
HRB-20	1020 L/h	102–535 L/h	0.8 MPa	pagoda 25
HRB-25	2.2 m³/h	0.3–1 m³/h	1.6 MPa	DN25
HRB-32	5.3 m³/h	0.8-2.3 m³/h	1.6 MPa	DN32
HRB-40	9.6 m³/h	2-5 m³/h	1.6 MPa	DN40
HRB-50	15.8 m³/h	3.5-10.3 m³/h	1.6 MPa	DN50
HRB-65	22m³/h	8.3-16.7m³/h	1.6 MPa	DN65
HRB-80	35 m³/h	13.3-18.9m³/h	1.6 MPa	DN80
HRB-100	54 m³/h	21.6-37.2m³/h	1.6 MPa	DN100

application of Magnetic Drive Pump

Chemical Industry

Magnetic drive pumps are utilized in chemical production to transport corrosive, flammable, and explosive media. They are ideally suited for applications requiring a high level of safety and leak-proof containment. In contrast, traditional centrifugal pumps with mechanical seals are prone to seal wear, fluid leakage, and component damage due to corrosion in such environments, leading to safety risks and the need for frequent maintenance shutdowns.

Electroplating industry

Magnetic drive pumps are utilized in electroplating production lines for tasks such as electrolyte circulation, tank solution transfer, and waste liquid collection. Designed to handle highly corrosive, flammable, and explosive liquids, the sealless magnetic coupling design ensures true zero-leakage operation and enhances the stability of the fluid transfer process.

New energy industry

Lithium battery manufacturers widely use magnetic drive pumps for operations such as electrolyte transfer and cooling circulation; these pumps enhance the sealing integrity and purity of the electrolyte transfer process.

Coatings industry

Magnetic drive pumps are widely used in the coatings industry for processes such as production, coating application, raw material transfer, and wastewater treatment. Capable of handling materials like resins, solvents, and color pastes, they offer advantages such as zero leakage, corrosion resistance, and low-shear operation. Compared to traditional pumps with mechanical seals, they feature lower maintenance costs and greater operational stability.

Pharmaceutical Manufacturing

Magnetic drive pumps are widely used in the pharmaceutical industry to transport highly corrosive media—such as acids, alkalis, and solvents—as well as highly toxic, flammable, or explosive chemical raw materials. Their seal-less design fundamentally eliminates safety hazards.

Electronics and Semiconductor Industry

Wet etching and cleaning processes in chip manufacturing demand extremely high levels of media purity; magnetic drive pumps meet these rigorous requirements thanks to their completely leak-free operation, making them ideal for transporting high-purity chemicals and etching solutions.

Case Study

Question

A fine chemical enterprise needed to transport a mixture containing 20% hydrofluoric acid at 85°C. Although they used standard stainless steel centrifugal pumps, the units would leak every two to three months, necessitating frequent repairs; this severely impacted production efficiency and kept overall costs consistently high.

Solution

A fluoroplastic-lined magnetic drive pump manufactured by Mudisen (China) was installed to replace the original stainless steel centrifugal pump. The fluoroplastic lining on the wetted parts withstands highly corrosive media such as hydrofluoric acid and aqua regia, while the magnetic drive mechanism—featuring a seal-less design—ensures true zero-leakage performance, completely eliminating the risk of fluid leakage.

Results

After the pump was replaced, it operated continuously for eight months with no leaks and required zero maintenance. Overall production efficiency increased by more than 20%, while total costs dropped by approximately 40%.

Engineer’s Tip

First, stainless steel cannot withstand strongly acidic or alkaline media, as it corrodes extremely rapidly. Second, high temperatures—particularly those exceeding 80°C—cause the corrosion rate to increase exponentially. Furthermore, leaks of corrosive media pose serious safety risks; such incidents can lead to production shutdowns for remediation and environmental penalties, necessitating stringent standards regarding leak prevention and control.

Frequently Asked Questions

What are the most important factors to consider when selecting a magnetic drive pump?

Four key parameters must be primarily considered:Medium composition and concentration: Determines the material for wetted parts. Temperature: Directly affects magnetic assembly performance and material corrosion resistance.Flow rate and head: Operating at a flow rate consistently below 30% of the rated value can lead to insufficient cooling.Presence of solid particles: If particles are present, a strainer or magnetic filter is required. Pump selection is a complex, systematic process， please consult a professional engineer for assistance.

What should be done if a magnetic drive pump "demagnetizes"?

Demagnetization is typically caused by high temperatures, dry running, or severe cavitation. Preventive measures include: first, ensuring the pump chamber remains filled with the medium at all times and strictly prohibiting dry running; additionally, selecting an operating point close to the rated conditions. Second, a platinum resistance temperature sensor can be installed on the outer surface of the isolation sleeve to monitor temperature rise. Finally, if demagnetization occurs, the manufacturer must be contacted to replace the magnetic coupling assembly.

How do I troubleshoot a magnetic drive pump that is failing to deliver liquid?

- Generally, check in the following order: 1. Check the suction line for air leaks or blockages. 2. Ensure there is sufficient priming liquid inside the pump (priming is required for the initial start-up). 3. Check for the correct pump rotation direction (incorrect wiring is common after motor replacement). 4. Check if the suction lift exceeds the pump's permissible range. If none of the above issues are found, the pump must be disassembled to inspect the pump shaft, the rotating and stationary seal rings, and the bearings.