PFA Lined Magnetic Drive Pumps
For Corrosive Chemical Duty
Kweng PFA lined magnetic drive pumps are engineered for leak-free handling of corrosive, hazardous and toxic liquids in demanding industrial environments. Designed as sealless centrifugal pumps, they deliver strong chemical resistance, low maintenance operation and reliable performance for process industries in India and global markets.
Engineered for leak-free handling of corrosive, hazardous and toxic liquids in demanding industrial environments
Sealless Technology
In-House Manufacturing
India & Global Supply
Sealless PFA Lined Pumps Built for Aggressive Chemicals
Kweng FL Series PFA lined magnetic drive pumps are developed for applications where conventional sealed pumps may face leakage, corrosion or maintenance challenges. With PFA lined wetted parts and a sealless magnetic drive design, these pumps are ideal for handling aggressive chemicals, acids, solvents and hazardous process liquids where safety and reliability are critical.
They are widely suited for industrial users seeking zero leakage performance, reduced emissions and dependable operation in continuous process duty.
Why Choose Kweng PFA Lined Magnetic Drive Pumps
Superior Chemical Resistance
PFA lined wetted components help resist corrosive and aggressive chemicals used in demanding industrial processes.
Leak-Free Sealless Design
No mechanical seal means reduced leakage risk and safer handling of hazardous, toxic and volatile liquids.
Low Maintenance Operation
Sealless construction reduces seal-related failures, maintenance downtime and replacement requirements.
Built for Critical Process Duty
Suitable for acid transfer, corrosive chemical service and demanding industrial fluid handling applications.
Technical Capability at a Glance
Designed for reliable performance in corrosive chemical and hazardous liquid handling applications.
Flow Capacity
Up to 140 m³/hr
Delivery Head
Up to 90 m
Temperature Range
-40°C to +180°C
Pressure Rating
Up to 10 bar(g)
Engineered for Safer and More Reliable Chemical Handling
The FL Series combines advanced material selection with sealless pump technology to support leak-free chemical processing. The pump uses molded PFA wetted parts for strong corrosion resistance and a magnetic drive system that eliminates the need for a mechanical seal.
Its containment arrangement helps separate the pumped liquid from the atmosphere, making the pump a strong choice for plants that want cleaner, safer and lower-maintenance fluid handling.
Applications Across Chemical and Process Industries
PFA lined magnetic drive pumps are suitable for a wide range of industrial applications where corrosion resistance, leak-free performance and process safety are essential.
- Acid transfer applications
- Corrosive chemical processing
- Mining chemical service
- Agrochemical processing
- Fertilizer-related chemical duty
- Hazardous and toxic liquid handling
- Hydrocarbon-related process duties
- Pharmaceutical chemical transfer
- Battery manufacturing chemicals
- Solvent and specialty chemical transfer
These pumps are especially relevant where plant operators want a more reliable alternative to conventional sealed pumps for aggressive fluids.
Industries We Serve
Chemical Processing
Suitable for aggressive chemicals, acids and corrosive process liquids.
Petrochemical & Hydrocarbon
Suitable for demanding services where leak prevention is important.
Battery & Specialty Chemicals
Suitable for corrosive chemical handling in emerging industrial sectors.
Mining & Metal Treatment
Supports chemical transfer duties in harsh industrial conditions.
Pharmaceutical Chemicals
Designed for controlled and safer transfer of chemical intermediates and utility chemicals.
Agrochemical & Fertilizer
Designed for process environments requiring chemical resistance and durability.
Key Technical Data of Product
Sealless Magnetic Drive Pumps - PFA Lined
- The ASME B73.3 standard guides the design of Kweng Sealless Magnetic Drive Pumps - PFA Lined.
- Kweng Sealless Magnetic Drive Pumps - PFA Lined are specifically designed for users who demand reliable and safe pumps for aggressive and corrosive chemical processing applications.
- All wetted parts are moulded PFA components that can safely handle a wide range of corrosives, chemicals, and solvents up to 180°C without corrosion.
- Fully encapsulated inner magnet rotor & impeller are hermetically sealed with a PTFE + carbon fiber containment shell from the atmosphere and maintain magnet integrity for the life of the pump.
- A carbon fiber secondary containment shell delivers unprecedented reliability with zero eddy current loss.
- Kweng FL Series Sealless Magnetic Drive Pumps - PFA Lined are more efficient, safe and reliable pumps than conventional sealed pumps.
- The non-metallic containment doesn’t create any eddy currents, which means it doesn’t make any heat and saves money on energy costs.
- The secondary containment shell made of carbon fiber is very strong, so the pumps can handle high system pressures.
- As Kweng FL Series Sealless Magnetic Drive Pumps - PFA Lined do not have seals, there are no leaks, no emissions, and no costs related to seal maintenance
Kweng Sealless Magnetic Drive Pumps - PFA Lined are categorized as under:
- FL: The FL Series Kweng Sealless Magnetic Drive Pumps - PFA Lined are designed to cater to clean fluid services with no special requirements with generous fluid gaps.
Applications:
- The FL Series Kweng Sealless Magnetic Drive Pumps - PFA Lined can handle a broad range of process applications such as chemical processing, hydrocarbon processing, pharmaceutical chemicals, mining, battery manufacturing chemicals, etc.
The FL Series Kweng Sealless Magnetic Drive Pumps – PFA Lined have been designed to conform to ANSI B73.3 dimensional standards. The FL Series Kweng Sealless Magnetic Drive Pumps – PFA Lined are extremely rugged, which makes them ideal for rigorous duty in the chemical and hydrocarbon industries.
| Maximum Flow | up to 140 m3/hr (620 GPM) |
| Maximum Head | up to 90 m (295 ft) |
| Liquid Temperature | -40 °C to + 180°C (-40°F to +355°F) |
| Maximum Power | up to 50 hp |
| System Pressures | up to 10 bar(g) (145 psig) |
| Speeds | up to 3600 rpm |
| Impeller | Closed / Semi Open |
| Bearings | SSiC, ‘ENDRY’ SSiC opt. for Upset or Dry-run |
| Connections | 150lb RF std. or opt. 300lb RF ANSI Flanges |
| Magnets | Samarium Cobalt |
| Motor | NEMA or IEC Frame Mounted |
| Mounting | Close Coupled OR Open Coupled |
| External Flush | Optional |
| Recirculated Flush & Vent | Optional |
| Certifications | Certifications – 2006/42 EC, 2014/34/EU |
Sectional View for Kweng Sealless Magnetic Drive Pumps - PFA Lined
Casing Gaskets
Fully confined gaskets. Various styles of standard PTFE gaskets.
Impellers
PFA molded semi-open impellers with optimised vanes for high efficiency and low NPSH values. A large metal core increases the mechanical strength. Secured screw connection to the shaft.
Casing
Standard ANSI design models. Thick-walled PFA lining with anchoring in the casing casting. Casing is designed to absorb system pressures and vacuum. Casing with drain hubs.
Pump Shaft
Fully molded pump shafts with standard wetted MOCs.
Bush Holder
Assembled to the back plate internally. It is not supported on the containment shell.
Containment Shell Gasket
Standard close impellers are single-piece castings.
Driven / Inner Magnet
Fully encapsulated driven/inner magnet rotors with standard molded MOC's Standard magnets are samarium cobalt.
Driver / Outer Magnet
Heavy duty rotor made from a solid bar. Standard materials EN8 with samarium cobalt magnets. Magnet rings fully sheathed for longevity.
Intermediate Lantern
Heavy duty single piece cast design with an inbuilt lifting hook & modular foot. Designed to accommodate open-coupled as well as all types of international motor frames with adapters for closed-coupled design.
Bush Bearing Set
Concentrically located hydrodynamic heavy duty bush bearings, designed to tolerate relative thermal expansions. Standard SSiC materials. Special "ENDRY" bearings for dry running capabilities available.
General Arrangement Drawings for Kweng Sealless Magnetic Drive Pumps - PFA Lined
Supplied Across India and Global Markets
Kweng serves industrial buyers across India as well as international customers looking for dependable sealless magnetic drive pump solutions. From chemical manufacturing clusters and process plants in India to export-oriented industrial buyers worldwide, we support fluid handling requirements where safety, corrosion resistance and operational reliability matter most.
Why Industrial Buyers Choose Kweng
- 25+ years of pump manufacturing experience
- Specialized sealless magnetic drive pump expertise
- In-house design, machining and manufacturing capability
- Strong focus on corrosive chemical applications
- Suitable for both Indian and international markets
- Technical support for pump selection and process matching
Kweng focuses on delivering industrial-grade, leak-free pump solutions built for performance, safety and long-term reliability.
Explore Related Magnetic Drive Pump Solutions
We offer a broad range of magnetic drive pump designs for different standards, applications and industries.











Need the Right PFA Lined Pump for Your Chemical Duty?
Share your application details, fluid type, flow, head, temperature and operating conditions. Our team will help you identify the right PFA lined magnetic drive pump for your process requirement.
Frequently Asked Questions
What is a PFA lined magnetic drive pump?
A PFA lined magnetic drive pump is a sealless centrifugal pump designed for corrosive chemical duty. It uses PFA lined wetted parts for chemical resistance and a magnetic drive system that eliminates the need for a mechanical seal.
Why choose a sealless pump instead of a mechanical seal pump?
Sealless pumps help reduce leakage risk, lower emissions and minimize seal-related maintenance. They are especially useful for hazardous, toxic and volatile liquids.
What fluids can these pumps handle?
These pumps are intended for aggressive chemicals, corrosives, acids, solvents and other demanding process liquids, subject to final material compatibility review.
Are these pumps suitable for acid transfer applications?
Yes, they are well suited for acid transfer and other corrosive chemical handling duties where leak-free performance is important.
What operating range is available?
The FL Series is positioned for flow up to 140 m³/hr, head up to 90 m, liquid temperature from -40°C to +180°C and pressure up to 10 bar(g).
Which industries use PFA lined magnetic drive pumps?
Typical industries include chemical processing, pharmaceutical chemicals, hydrocarbon related services, mining, battery manufacturing chemicals, agrochemicals and fertilizer applications.
Do you supply across India and export markets?
Yes, Kweng supports customers across India and also serves international industrial buyers.
How can I get the right pump selection?
Send us your fluid details, temperature, flow, head and operating conditions. Our team will recommend a suitable pump model for your application.
Request a Quote for PFA Lined Magnetic Drive Pumps
Looking for a reliable PFA lined magnetic drive pump for corrosive, hazardous or toxic fluid handling? Contact Kweng for product selection support, technical discussion and quotation.