Magnetic Centrifugal Pumps
MAGSON magnetic centrifugal pumps deliver highly corrosive fluids with a hermetically sealed design. Magnetic coupling instead of a shaft seal, zero leakage, maintenance-free.
Products
Overview
MAGSON magnetic centrifugal pumps handle highly corrosive fluids without a shaft seal—a drive magnet transmits the motor’s power to the impeller without physical contact. The pump chamber and drive are hermetically sealed off by a can. Eight variants made of plastic (PP, ETFE, PVDF), stainless steel, and plastic-lined cast iron cover flow rates up to 2,000 l/min.
Highlights
Hermetically sealed
Magnetic coupling instead of a shaft seal—no leakage possible
Maintenance-free
No wear-prone shaft seal, no seal replacement
Wide Range of Services
Flow rate up to 2,000 l/min, up to 42 mWs, up to 120 °C and higher (stainless steel)
Variety of Materials
Suitable for the medium and application: PP, ETFE, PVDF, stainless steel
Advantages
Efficient
The MAGSON is designed for economical and energy-efficient operation.
Secure
Designed for demanding media and critical processes. The hermetically sealed design protects people, equipment, and the environment.
Reliable
Robust components and well-engineered designs ensure a high level of operational reliability even under demanding conditions.
Flexible
Materials, drives, and connections can be customized to meet the requirements of your application.
Protected
Built-in protective features prevent damage and enhance operational safety during daily use.
Easy to maintain
Maintenance work can be performed efficiently, reducing the effort required in the event of a service call.
Applications
Typical applications and areas of use for FLUX magnetic centrifugal pumps.
Chemical Industry
Concentrated acids, alkalis, and corrosive solvents—hermetically sealed, no wave seal.
Electroplating and surface treatment
Electroplating solutions, pickling baths, and anodizing solutions—corrosion-resistant in PP/ETFE or stainless steel.
Petrochemicals
Flammable and corrosive media – ATEX-certified MAGSON MML and MMT.
High-Temperature Processes
Media up to 300 °C – MAGSON MMT with a stainless steel side-channel impeller.
Crystallizing Media
Media prone to crystallization—no wave seals that could crystallize or become blocked.
High-volume conveyance
Flow rate up to 2,000 l/min – MAGSON MA in plastic for high-volume processes.
Technology
Knowledge and Technology
Selecting the right MAGSON magnetic drive centrifugal pump depends on the fluid, pressure, temperature, and material requirements. The following sections explain the principle of magnetic coupling and compare the eight variants.
Operating Principle
Seal-less Magnetic Centrifugal Pumps: Reliable Pumping Without a Shaft Seal
In conventional centrifugal pumps, the shaft seal is a critical component. Maintenance requirements increase, particularly with highly aggressive or crystallizing fluids. At the same time, system availability decreases.
MAGSON magnetic centrifugal pumps operate seal-less and with a magnetic coupling. The outer rotating drive magnet transmits the motor’s power contactlessly to the inner magnet, which drives the impeller.
A through-shaft is not required. This also eliminates the need for a shaft seal to the motor. The pump chamber and drive are hermetically sealed off from each other by a gap ring.
The benefits: no leakage through a shaft seal, reduced maintenance, and greater safety when handling critical fluids.
MAGSON MA – PP/ETFE, injection-molded version, normal suction
- Highly Corrosive Acids
- Alkalis
- Degreasing baths
- Chemicals
- Highly corrosive liquids
- Media prone to crystallization
- Sulfuric acid
- Sodium hydroxide solution
MAGSON MAS – PP/ETFE, injection-molded design, self-priming
- Highly Corrosive Acids
- Alkalis
- Degreasing baths
- Chemicals
- Highly corrosive liquids
- Media prone to crystallization
- Toxic media from double-walled tanks
- Environmentally hazardous media from double-walled tanks
MAGSON MP – PP/PVDF, made from solid material
The MP series is used when the flow rates of the MA series are no longer sufficient. It is suitable for more demanding applications and can also be manufactured in an ATEX-compliant version. The main materials are PP and PVDF.
MAGSON MML – Stainless Steel
- Highly Corrosive Media
- Media prone to crystallization
- Media at elevated pressure
- Media at elevated temperatures
- Media for which plastic is not suitable
- Chemically demanding liquids
- Media suitable for stainless steel, Hastelloy, or Inconel, depending on the design
PLASTIC VERSIONS (PP/ETFE/PVDF)
Note: Starting with Series 4, the pumps feature a back-pullout design as standard. This allows the motor and drive unit to be removed without taking the pump out of the pipeline. This reduces maintenance effort and downtime.
Performance range of the series
All plastic variants: Viscosity max. 150 mPas.
| Assembly | Flow Rate | Delivery head | Material | Design / Special Features |
|---|---|---|---|---|
| MA BG 1 | up to 70 l/min | up to 6 mWs | PP, ETFE | Modular design, single-stage, horizontal |
| MA BG2 / BG3 | up to 120 l/min | up to 15 mWs | PP, ETFE | Modular design, single-stage, horizontal |
| MA BG4 | up to 220 l/min | up to 14 mWs | PP, ETFE | Back-pullout design |
| MA BG4H | up to 160 l/min | up to 16 mWs | PP, ETFE | Back-pullout design |
| MA BG5 | up to 320 l/min | up to 18 mWs | PP, ETFE | Back-pullout design |
| MA BG5H | up to 200 l/min | up to 24 mWs | PP, ETFE | Back-pullout design |
| MA BG6 | up to 510 l/min | up to 30 mWs | PP, ETFE | Back-pullout design |
| MA BG6H | up to 230 l/min | up to 29 mWs | PP, ETFE | Back-pullout design |
| MA BG7 | up to 950 l/min | up to 42 mWs | PP, ETFE | Back-pullout design |
KUNSTSTOFF-Ausführungen, Spritzguß, selbstansaugend (PP/ETFE)
Max. Ansaughöhe 5mWs bei Wasser und 20°C. Tatsächliche Ansaughöhe von den Gegebenheiten vor Ort abhängig.
| BAUGRUPPE | FÖRDERMENGE | FÖRDERHÖHE | MATERIAL | BAUART / BESONDERHEITEN |
|---|---|---|---|---|
| MAS BG4 | bis 115 l/min | bis 13 mWs | PP, ETFE | Magnetgekuppelt, selbstansaugend |
| MAS BG5 | bis 230 l/min | bis 17 mWs | PP, ETFE | Magnetgekuppelt, selbstansaugend |
| MAS BG6 | bis 470 l/min | bis 27 mWs | PP, ETFE | Magnetgekuppelt, selbstansaugend |
STAINLESS STEEL MODELS
Max. viscosity 150 mPas. For media to which plastic is not resistant.
| Assembly | Flow Rate | Delivery head | Material | Design / Special Features |
|---|---|---|---|---|
| MML BG 1 | up to 100 l/min | up to 8 mWs | Stainless steel | Modular design, single-stage, horizontal |
| MML BG 2 | up to 200 l/min | up to 11 mWs | Stainless steel | Modular design, single-stage, horizontal |
| MML BG 3 | up to 400 l/min | up to 19 mWs | Stainless steel | Modular design, single-stage, horizontal |
| MML BG 4 | up to 500 l/min | up to 24 mWs | Stainless steel | Modular design, single-stage, horizontal |
Performance Comparison
- Highest-performance model: MA BG7 with up to 950 l/min and 42 mWs.
- Highest stainless steel performance: MML BG4 with up to 500 l/min and 24 mWs.
- Widest range of materials for chemical applications: MA series in PP and ETFE.
The maximum flow rate is a test bench value, measured with water at 20 °C at the pump’s discharge port, without accessories (hose, dispensing nozzle, flow meter). The flow rate that can be achieved in practice is lower and depends on the specific application, the properties of the fluid, and the pump configuration. Specifications are for an axial rotor, unless otherwise stated.
| Feature | MML | MA |
|---|---|---|
| Material | Stainless steel | PP, ETFE |
| Max. flow rate | 500 l/min | 950 l/min |
| Max. head | 24 mWs | 42 mWs |
| Design | Modular design | Block design (BG1–BG3), back-pullout design (from BG4 onward) |
| Typical Applications | Standard applications with stainless steel | Corrosive media, acids, and alkalis |
Operating Principle of the MAGSON MAS
Step 1
Special Advantages of the MAS
Step 2
1. Before Start-Up
The housing with integrated suction chamber consists of several chambers. Before initial commissioning, the MAGSON MAS must be filled with liquid once.
Step 3
2. Priming
The impeller and suction chambers are designed to evacuate air, enabling the safe pumping of a two-phase mixture of liquid and air. A sufficient amount of liquid always remains in the lower housing chamber to lubricate and cool the impeller and bearings.
Step 4
3. Pumping Operation
During pumping operation, the MAGSON MAS functions like the MA series as a sealless, magnetically coupled centrifugal pump. Just as reliable, just as efficient.
Step 5
4. Stop
When the pump is switched off, the medium flows back through the suction line toward the tank. The special arrangement of the internal chambers ensures that sufficient liquid remains inside the pump housing and that the suction chamber does not run empty. This unique process operates without the need for valves.
Compare
An overview of the most important specifications and features—for selection and comparison.
| Series / Model | Flow Rate | Head | Material | Design / Special Features |
|---|---|---|---|---|
| MML BG1 | up to 100 l/min | up to 8 mWs | Stainless steel | Modular design, single-stage, horizontal |
| MA BG1 | up to 70 l/min | up to 6 mWs | PP, ETFE | Modular design, single-stage, horizontal |
| MML BG2 | up to 200 l/min | up to 11 mWs | Stainless steel | Modular design, single-stage, horizontal |
| MA BG2 / BG3 | up to 120 l/min | up to 15 mWs | PP, ETFE | Modular design, single-stage, horizontal |
| MML BG3 | up to 400 l/min | up to 19 mWs | Stainless steel | Modular design, single-stage, horizontal |
| MA BG4 | up to 220 l/min | up to 14 mWs | PP, ETFE | Back-pullout design |
| MA BG4H | up to 160 l/min | up to 16 mWs | PP, ETFE | Back-pullout design |
| MML BG4 | up to 500 l/min | up to 24 mWs | Stainless steel | Block construction, single-stage, horizontal |
| MA BG5 | up to 320 l/min | up to 18 mWs | PP, ETFE | Back-pullout design |
| MA BG5H | up to 200 l/min | up to 24 mWs | PP, ETFE | Back-pullout design |
| MA BG6 | up to 510 l/min | up to 30 mWs | PP, ETFE | Back-pullout design |
| MA BG6H | up to 230 l/min | up to 29 mWs | PP, ETFE | Back-pullout design |
| MA BG7 | up to 950 l/min | up to 42 mWs | PP, ETFE | Back-pullout design |
The maximum flow rate is a test bench value, measured with water at 20 °C at the pump’s discharge port, without accessories (hose, dispensing nozzle, flow meter). The flow rate that can be achieved in practice is lower and depends on the specific application, the properties of the fluid, and the pump configuration. Specifications are for an axial rotor, unless otherwise stated.
Motors and accessories
Design of PP/ETFE Magnetic Centrifugal Pumps for Aggressive Media
MAGSON MA and MAS models are designed for aggressive, corrosive, and crystallizing media. The PP and ETFE materials allow for use with acids, alkalis, and chemically demanding liquids.
The seal-less design protects the process from leaks. At the same time, it reduces maintenance requirements since there is no dynamic shaft seal subject to wear.
The MAGSON MA model with normal suction is suitable for many stationary applications. The self-priming MAGSON MAS is used when the pump is installed above the liquid level.
This is particularly relevant for double-walled tanks, where toxic or environmentally hazardous media often need to be pumped from above.
Suitable for:
- highly corrosive acids
- alkalis
- degreasing baths
- chemically demanding liquids
- crystallizing media
- Toxic or environmentally hazardous media from double-walled tanks
Design of Stainless Steel Magnetic Centrifugal Pumps for Pressure and Temperature
MAGSON MML is used when plastic reaches its technical limits. This applies primarily to applications involving higher pressures, higher temperatures, or special chemical requirements.
The metal version also operates seal-less and with a magnetic coupling. Here, too, the stator hermetically separates the pump chamber from the drive.
Stainless steel is available as standard. Other metallic materials, such as Hastelloy or titanium, are available for specific media and process conditions.
This allows the pump to be adapted to demanding applications without compromising the seal-less operating principle.
Suitable for:
- corrosive media at higher temperatures
- media at elevated pressures
- Applications where plastic is not suitable
- chemically demanding liquids
- Special media with specific material requirements
Self-priming, safe, powerful – MAGSON MAS
Environmentally harmful or corrosive fluids are often stored in double-walled tanks. Connecting a non-self-priming centrifugal pump at the bottom of the tank requires extensive safety measures due to the increased risk of leakage.
The MAGSON MAS offers a safe and economical alternative here. As a self-priming, magnetically coupled centrifugal pump, it can draw fluids from the bottom and pump them upward using the integrated suction chamber.
Thanks to its limited dry-running capability, it is also suitable for emptying tanks almost completely.
You may also like
MAGSON Plastics
PP/ETFE/PVDF versions. MAGSON MA, MAS, MAU, MP, MPT
MAGSON Stainless Steel
Stainless steel models. MAGSON MML, MMT
MAGSON self-priming
MAGSON MAS reliably transfers fluids even when the suction line is not completely filled before start-up.
Accessories
Frequency converters, motor accessories, loose flanges, and replacement parts
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