Allweiler SEMA Multistage Side Channel Pump

The Allweiler SEMA is a multistage side channel pump with a magnetic drive (MagDrive), designed for operating pressures up to PN 25. The combination of side channel hydraulics and a sealless magnetic coupling makes the SEMA particularly suitable for handling gases, toxic liquids, aggressive chemicals, and volatile media where leakage prevention is critical.

Thanks to its multistage design, the pump can generate relatively high pressures at low to moderate flow rates while maintaining excellent suction characteristics. The magnetic drive eliminates the need for a mechanical shaft seal, ensuring leak-free operation and increased environmental and operator safety.

Suitable Fluids

The Allweiler SEMA is designed for handling:

• Aggressive liquids
• Toxic liquids
• Volatile liquids
• Liquids containing entrained gases
• Process chemicals
• Petrochemical products
• Other fluids compatible with the selected pump materials

Typical Applications

The Allweiler SEMA provides reliable, leak-free pumping of hazardous and gas-containing liquids in chemical, environmental, and industrial process applications.

Common applications include:

• Environmental engineering
• Chemical processing
• Petrochemical plants
• Plant and process engineering
• Tank transfer systems
• Chemical dosing and circulation systems

Key Features

• Multistage side channel pump design
• Magnetic-drive (MagDrive) construction
• Operating pressure up to PN 25
• Sealless operation
• Leak-free handling of dangerous liquids
• Suitable for gas containing media
• Excellent suction characteristics
• Baseplate-mounted design with pump and motor on a common base
• Designed for aggressive and toxic fluids