Industrial Magnetic Drive Pumps for Chemical Fluid Transfer
JUSH magnetic drive pumps use magnetic coupling to transmit motor power to the impeller without a conventional dynamic shaft seal. The separation between the drive magnet and the pumped liquid helps reduce leakage paths associated with mechanically sealed pump designs.
The current JUSH magnetic pump range contains eight product models and series, covering fluoroplastic, fluorine-lined and stainless steel constructions, as well as self-priming magnetic pumps, magnetic scroll pumps and magnetic gear metering pumps. These products are intended for industrial liquid transfer and chemical-processing applications in which fluid containment, corrosion resistance and stable operation are important.
Chemical compatibility is determined by the complete wetted-material configuration, liquid composition, concentration, operating temperature and operating pressure. Every pump is therefore specified against the actual process conditions.
JUSH Magnetic Pump Product Range
| Product series | Verified product type | Main page positioning |
|---|
| Micro Magnetic Gear Metering Pump | Magnetic gear metering pump with explosion-proof variable-frequency motor | Controlled liquid metering |
| CQB-F | Fluoroplastic alloy magnetic pump | Corrosive-liquid transfer |
| JMC40-25-160P | Stainless steel magnetic pump | Stainless steel magnetic-drive construction |
| ZFT Series | Self-priming fluoroplastic magnetic drive pump | Self-priming corrosive-liquid transfer |
| CWB Type | Magnetic scroll pump | Magnetic-drive scroll-pump application |
| CQB Type | Fluoroplastic magnetic pump | Fluoroplastic magnetic-drive transfer |
| CQB Type | Fluorine-lined magnetic pump | Fluorine-lined wetted construction |
| IMD Type | Fluorine plastic magnetic pump | Industrial fluoroplastic magnetic-drive transfer |
Each product page provides the model-specific configuration and enquiry entry. Pump selection is based on required flow, total head, liquid composition, concentration, temperature, density, viscosity, solids content, suction conditions and installation environment.
How a Magnetic Drive Pump Works
A magnetic drive pump transfers torque through an external drive magnet and an internal driven magnet. A containment shell separates the pumped liquid from the external drive assembly. Because torque is transmitted magnetically, the pump does not require the rotating shaft to pass through a conventional mechanical shaft seal.
This construction reduces the number of dynamic sealing points between the pumped liquid and the surrounding environment. It is widely applied to fluid-transfer duties where leakage control and material compatibility are important.
A magnetic drive pump is not operated without liquid unless the product is explicitly designed and rated for dry running. The pumped liquid normally provides lubrication and heat removal for internal components. Continuous operation against a closed discharge valve also produces heat and must be avoided.
Magnetic Pump Materials
Fluoroplastic and Fluorine-Lined Magnetic Pumps
The JUSH range includes CQB-F, CQB, IMD and ZFT fluoroplastic or fluorine-lined magnetic pump products. These series are presented separately because their material construction and hydraulic arrangements are not identical.
The ZFT product page identifies a steel-lined F46 structure, neodymium-iron-boron magnetic components and a non-metallic isolation sleeve. F46 is the Chinese industrial designation commonly associated with fluorinated ethylene propylene material. Its use in the wetted structure supports applications requiring fluoropolymer chemical resistance.
The chemical suitability of every configuration is based on the complete wetted-material list rather than the general term “fluoroplastic.”
Stainless Steel Magnetic Pumps
The JMC40-25-160P is the stainless steel magnetic pump listed in the current JUSH range. Stainless steel provides mechanical strength and is used with liquids compatible with the specific stainless steel grade and the remaining wetted components.
Stainless steel is not universally resistant to every acid, chloride solution or oxidizing chemical. The product operating envelope is defined by the actual liquid composition, concentration and temperature.
ZFT Self-Priming Fluoroplastic Magnetic Drive Pump
The ZFT series is the self-priming fluoroplastic product within the JUSH magnetic pump range. Published JUSH product data covers 12 ZFT models.
| Published parameter | ZFT series range |
|---|
| Flow rate | 3.6–60 m³/h |
| Head | 20–45 m |
| Self-priming height | 1.5–3.0 m |
| NPSHr | 3.0–4.5 m |
| Motor power | 1.5–18.5 kW |
| Rotational speed | 2900 rpm |
| Inlet × outlet diameter | 32 × 25 mm to 80 × 65 mm |
| Published number of models | 12 |
The ZFT series uses magnetic transmission and a self-priming hydraulic arrangement. Its published construction includes a steel-lined F46 body, neodymium-iron-boron magnets and a non-metallic isolation sleeve.
The complete model performance table belongs on the ZFT product page, while this category page should retain the verified series range above and link directly to the full model data.
Industrial Applications
JUSH magnetic pumps are positioned for industrial liquid-transfer duties including:
Chemical process liquid transfer
Acid and alkali transfer with compatible wetted materials
Solvent transfer with verified material and motor compatibility
Circulation and unloading systems
Water-treatment chemical handling
Pharmaceutical and fine-chemical process transfer
Electroplating and surface-treatment liquid circulation
Process systems requiring reduced shaft-seal leakage paths
Metered liquid delivery using the magnetic gear metering product
Self-priming transfer using the ZFT series
Application suitability depends on the model-specific hydraulic range, wetted materials and operating limits published for each series.
Magnetic Drive Pump and Mechanically Sealed Pump Comparison
| Feature | Magnetic drive pump | Mechanically sealed pump |
|---|
| Torque transmission | Magnetic coupling | Direct shaft connection |
| Dynamic shaft seal | Not used in the standard magnetic-drive arrangement | Mechanical seal used |
| Primary containment structure | Containment shell and static sealing structure | Mechanical seal faces and static seals |
| Leakage path associated with shaft seal | Removed | Present and controlled by mechanical seal |
| Dry-running sensitivity | Normally high | Depends on seal and pump design |
| Internal heat removal | Depends on liquid circulation | Depends on pump and seal arrangement |
| Typical maintenance focus | Bearings, containment shell and magnetic coupling | Mechanical seal, bearings and shaft components |
The decisive engineering factors are liquid compatibility, required duty point, suction conditions, temperature, solids content and maintenance environment.
Information Required for Pump Configuration
Every magnetic pump enquiry is processed with the following operating data:
Required flow rate in m³/h
Required total head in metres
Liquid name and chemical composition
Concentration
Operating and maximum temperature
Density and viscosity
Presence and size of suspended solids
Suction condition and available NPSH
Required self-priming height
Continuous or intermittent operation
Motor voltage, frequency and phase
Indoor or outdoor installation
Hazardous-area motor requirements
Connection standard and pipe diameter
Providing these parameters allows the product series, hydraulic model, wetted materials, motor and connection configuration to be matched to the stated duty.
Installation and Operating Requirements
Magnetic pumps are installed on a rigid, level foundation with correctly supported suction and discharge piping. Pipe loads are not transferred to the pump nozzles.
The suction line is kept short and direct. Air pockets, unnecessary restrictions and undersized suction piping are avoided. The available NPSH remains above the pump’s required NPSH at the operating point.
Before startup, the pump casing and required internal circulation path are filled with liquid. Standard magnetic pumps are not operated dry. The discharge valve is not kept fully closed during continuous operation because dead-heading converts motor energy into heat.
The pump is stopped immediately when abnormal vibration, noise, temperature rise, loss of flow or unstable pressure occurs. Internal components are inspected for wear, obstruction and loss of lubrication before operation resumes.
Magnetic Pump Maintenance
Routine maintenance includes:
Inspecting the pump for leakage and abnormal noise
Checking motor current and operating temperature
Recording suction pressure, discharge pressure and flow
Inspecting internal bearings and thrust components
Checking the containment shell for wear or damage
Removing crystallized deposits before restarting the pump
Confirming free rotation after extended shutdown
Keeping magnetic particles away from internal magnetic components
Replacing worn components with parts specified for the exact pump model
Maintenance records should include the model, serial number, liquid handled, operating hours, inspection findings and replaced components.
Frequently Asked Questions
What is a magnetic drive pump?
A magnetic drive pump transmits motor torque to the impeller through magnetic coupling. A containment shell separates the pumped liquid from the external drive system, removing the conventional rotating shaft-seal arrangement.
Does a magnetic pump have a mechanical seal?
The magnetic-drive products described on this page do not use a conventional dynamic mechanical shaft seal. Static seals and the containment structure remain part of the pressure boundary.
Can a magnetic pump run dry?
The standard magnetic pumps on this page are treated as non-dry-running pumps. Liquid is required for internal lubrication and heat removal.
Which JUSH magnetic pump is self-priming?
The ZFT series is the self-priming fluoroplastic magnetic drive pump in the current JUSH magnetic pump range.
What is the published capacity of the ZFT series?
The published ZFT range covers 3.6–60 m³/h flow, 20–45 m head, 1.5–3.0 m self-priming height and 1.5–18.5 kW motor power across 12 models.
What information is required for a quotation?
The quotation is based on flow, head, liquid composition, concentration, temperature, density, viscosity, solids content, suction conditions, motor requirements and pipe connections.
