MAGNETIC DRIVE PUMPS
Magnetic Drive Pumps
Mag Drive Pumps are seal-less centrifugal pumps that are run by a magnetic coupling
Magnetic Drive Pumps (or Mag Drive Pumps) are centrifugal pumps that operate without a seal. They transfer torque from the motor to the impeller through a magnetic coupling. This design eliminates the necessity for mechanical seals, which are frequently the most vulnerable component in conventional pumps due to leakage and fatigue.
How Magnetic Drive Pumps Work:
Two Sets of Magnets:
Driven magnet: Attached to the impeller inside the pump housing.
Drive magnet: Attached to the motor shaft.
These magnets are separated by a static containment shell (typically non-metallic), creating a hermetic seal between the motor and the pumped fluid.
When the motor runs, the outer magnet turns, which in turn spins the inner magnet and impeller — without direct mechanical contact.
Key Features:
- Seal-less Design: No mechanical seals = zero leakage risk, lower maintenance.
- Corrosion Resistance: Made from PP, PVDF, ETFE, or metallic alloys like Hastelloy or stainless steel with chemical-resistant linings.
- Low Maintenance: No dynamic seals to replace; wear is minimized.
- Safe for Hazardous Fluids: Especially useful in chemical plants and explosive environments.
Applications:
- Chemical processing
- Pharmaceuticals
- Acid transfer (e.g., sulfuric, nitric, hydrochloric acids)
- Electroplating & surface treatment
- Water treatment with aggressive chemicals
- Food & beverage (in sanitary versions)
- Electronics manufacturing
Common Materials:
- ComponentTypical MaterialsPump casingPP, PVDF, ETFE, SS316, HastelloyImpellerCeramic shaft, PVDF, ETFEContainment shellPFA, ETFE, or stainless steelBearingsCarbon, ceramic, or PTFE
Advantages:
Leak-free operation – excellent for hazardous or toxic fluids
Low total cost of ownership – less maintenance and no seal failures
Excellent chemical compatibility
Can handle highly corrosive or volatile liquids
Compact and often lightweight in thermoplastic versions
Limitations:
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Cannot handle solids well – solids can damage internal parts
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Dry running can damage the pump – requires protection systems
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Limited viscosity range – best for low-to-medium viscosity liquids
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Magnetic decoupling – can occur under overload
Popular Magnetic Drive Pump Types:
Pump type and there description
- PP/PVDF Mag Drive Pumps: For corrosive chemical transfer, light duty
- ETFE/PFA Lined Pumps: For aggressive, high-purity applications
- Metallic Mag Drive Pumps: For high-pressure, high-temperature fluids
- ANSI Magnetic Drive Pumps: Standard for U.S. industrial applications
