The CQL Stainless Steel Magnetic Pump is a high-performance, seal-less, magnetically driven pump designed for safe, reliable, and efficient transfer of aggressive, corrosive, or high-purity liquids. It is widely used in chemical, pharmaceutical, food, beverage, and industrial applications where leakage prevention, contamination-free operation, and low maintenance are critical.
Unlike conventional centrifugal pumps that rely on mechanical seals prone to leakage and wear, the CQL Stainless Steel Magnetic Pump employs magnetic coupling technology, eliminating the need for direct mechanical contact between the drive and the impeller. This seal-less design provides completely leak-free operation, preventing fluid loss, environmental contamination, and safety hazards.
Constructed entirely from high-grade 316L stainless steel, the CQL Magnetic Pump offers excellent corrosion resistance, chemical compatibility, and durability. Its precision-engineered impeller and magnetic coupling system deliver smooth, vibration-free operation while maintaining high efficiency across a wide range of flow rates and pressures.
The pump is also designed to handle viscous fluids, solvents, acids, alkalis, and high-purity liquids, making it suitable for chemical dosing, food processing, pharmaceutical production, and laboratory applications. Its compact, modular design allows easy integration into existing pipelines, production lines, or custom process systems.

Seal-less Magnetic Drive
Eliminates mechanical seals, gaskets, and packing.
Ensures completely leak-free operation for toxic, corrosive, or high-purity liquids.
316L Stainless Steel Construction
Provides superior corrosion and chemical resistance.
Suitable for aggressive chemicals, acids, solvents, and food-grade applications.
High Efficiency and Low Noise
Precision-engineered impeller reduces energy loss and vibration.
Smooth fluid handling ensures minimal noise and pulsation-free operation.
Wide Temperature and Pressure Range
Operates safely between -40°C to +150°C.
Standard models handle pressures up to 10 bar, with high-pressure versions available.
Compact and Modular Design
Easily fits in tight spaces or complex piping systems.
Modular construction allows flexible installation and maintenance.
Chemical and Food Compatibility
Certified for FDA and GMP compliance for sanitary applications.
Handles viscous liquids, syrups, creams, oils, and chemical solutions without contamination.
Low Maintenance and Long Life
No seal replacements required.
Minimal downtime and reduced spare parts inventory.
Variable Flow and Viscosity Handling
Efficient pumping of low to high-viscosity fluids.
Suitable for both continuous and intermittent operations.
| Parameter | Specification Range |
Pump Type | Centrifugal, Magnetic Drive |
Flow Rate | 0.5 – 500 m3/h |
Head | 5 – 120 m |
Operating Temperature | -40°C to +150°C |
Pressure Rating | Up to 10 bar (standard), optional high-pressure models up to 16 bar |
Material of Construction | 316L Stainless Steel, Optional Hastelloy C |
Bearings | Anti-friction ceramic or PTFE bearings |
Seal Type | Seal-less, magnetic coupling drive |
Motor Options | IEC standard, VFD compatible, explosion-proof variants available |
Viscosity Range | Up to 1000 cP (depending on impeller and model) |
pH Range | 0 – 14 |
Connection Types | ANSI, DIN, JIS flanges; Tri-Clamp for sanitary applications |
Efficiency | Up to 85% hydraulic efficiency |
Noise Level | <65 dB(A) at full load |
Compliance | ISO 9001, CE, RoHS, FDA (food-grade models), GMP-compliant |
The CQL Stainless Steel Magnetic Pump is ideal for transferring corrosive chemicals, acids, alkalis, and solvents. Its seal-less design prevents leakage, ensuring safety in chemical reactors, storage tanks, and dosing systems.
The pump is designed for sterile and high-purity liquid transfer, meeting GMP and FDA requirements. Suitable for liquid formulation, sterile solutions, and pharmaceutical production lines, it prevents contamination and maintains product integrity.
Food-grade versions handle syrups, oils, dairy products, chocolate, and sauces. Polished stainless steel construction ensures compliance with hygiene standards, prevents bacterial growth, and withstands washdown cleaning.
Used in pilot plants and laboratory-scale processes, the CQL pump provides precise, controlled, leak-free fluid handling for experimental and small-scale production.
Ideal for high-purity chemical and solvent transfer in semiconductor manufacturing. Seal-less design avoids contamination of wafers and sensitive electronic components.
Used for handling acids, alkalis, and chemical waste in water treatment, the pump ensures leak-free operation in environmentally sensitive applications.
The pump is suitable for fuel transfer, solvents, and petrochemical solutions, resisting aggressive hydrocarbon fluids and providing reliable, continuous operation.
Handles corrosive liquids, fuel additives, and brine solutions in marine applications. Stainless steel construction resists saltwater corrosion.
Handles creams, gels, and viscous cosmetic fluids without product degradation or contamination, maintaining consistency and texture.
Verify alignment with motor and piping system.
Ensure pump casing and magnetic coupling are free from debris.
Confirm electrical connections and motor voltage compatibility.
Fill the pump casing with liquid to avoid dry running.
Energize the motor gradually to reach operational speed.
Observe pump for vibration, noise, or unusual heating.
Monitor flow rate and pressure gauges for normal operation.
Maintain fluid viscosity and temperature within pump specifications.
Use VFDs for precise flow and pressure control.
Regularly monitor the magnetic coupling for proper operation.
Gradually reduce motor speed.
Flush pump with compatible solvent for viscous or aggressive fluids.
Inspect impeller, bearings, and magnetic coupling after shutdown.
Visual Inspection
Check pump casing, impeller, and magnetic coupling for wear or corrosion.
Bearing Check
Inspect bearings for noise, vibration, or wear. Replace if necessary.
Magnetic Coupling Maintenance
Ensure magnets are intact and aligned correctly.
Verify that coupling gap meets manufacturer specifications.
Cleaning
Flush pump after use with compatible solvent, particularly for sticky or corrosive fluids.
Periodic Overhaul
Recommended every 6–12 months depending on fluid type and operating conditions.
Inspect impeller, magnetic coupling, and housing for wear or corrosion.
Lubrication
Most CQL Magnetic Pumps are self-lubricated by the pumped fluid; no external lubrication required.
| Problem | Possible Cause | Solution |
Pump fails to deliver fluid | Air entrainment or dry-running | Prime pump and ensure fluid presence |
Vibration or noise | Bearing wear or misalignment | Replace bearings, realign pump and motor |
Reduced flow rate | Blocked impeller or high viscosity | Clean impeller, adjust fluid viscosity |
Magnetic coupling slippage | Misalignment or excessive gap | Adjust coupling and ensure proper alignment |
Fluid leakage at connections | Loose flanges or damaged O-rings | Tighten flanges, replace seals if necessary |
Overheating | Low flow, high viscosity, or ambient heat | Increase flow, check fluid temperature and viscosity |
Leak-Free Operation – Eliminates the risk of fluid leakage with seal-less magnetic coupling.
Corrosion Resistance – High-quality 316L stainless steel construction handles aggressive chemicals.
Low Maintenance – Minimal downtime and spare parts requirements.
High Efficiency – Optimized impeller design reduces energy consumption.
Wide Application Range – Chemical, pharmaceutical, food, semiconductor, and marine industries.
Safe and Hygienic – FDA and GMP compliance for sanitary or high-purity applications.
Durable and Reliable – Long operational life with minimal wear or maintenance.
Copyright ? Jiangsu Longjie Pump Manufacturing Co., Ltd.