Mag Drive Pump

In a standard centrifugal pump, the power is delivered to the pump end either through a direct connection between the rotating element and the motor shaft or through a coupling between the pump end shaft and the motor shaft. In these cases, the pumping chamber needs to be sealed from the outside. Traditionally, packing or some other sort of mechanical seal accomplishes this.

To start with the basics, a magnetic drive replaces the shaft seal, which is the most high maintenance component on a centrifugal pump of this kind. This effectively prevents a mag drive pump from leaking.

The principle of a magnetic driven pump is that the rotation from the motor shaft is transferred to the pump end via a magnetic coupling which eliminates the need for the shaft seal or packing. A drive magnet is mounted to the motor shaft, which transfers the motor torque through a sealed housing to an internal driven magnet. The driven magnet is coupled directly to the impeller. This configuration is categorized as seal-less.

The following will give an idea of approximate leakage rate for various sealing arrangements:

• Gland packing 1000 ppm (parts per million)
• Single mechanical seal 10 - 1000 ppm
• Double mechanical seal 10 ppm
• Seal-less 0 ppm

Principle of operation

Magnetic driven pumps are seal-less pumps that use a coaxial magnetic coupling to transmit torque to an impeller. A standard electric motor drives a set of permanent magnets that are mounted on a carrier or drive assembly. In turn, the magnets drive the inner rotor and provide the no-slip or synchronous capability of the torque coupling.

Features:

• Lower energy consumption & operating cost over the long life cycle of the pump.
• An user friendly & maintenance ease design with minimal parts & no special tools.
• A hermetically sealed drive system for leak free pump operation
• Close-coupled design with volute casing.
• Injection (compression) molded gfpp or pvdf construction for excellent chemical & corrosion resistance
• No environmental contamination
• Replaceable shaft
• Closed impeller for lower power requirements and higher efficiencies.
• Rear earth neodymium iron boron magnets (ndfeb) for higher temperature resistance
• Unmatched coupling strength
• Iso 1940 g2. 5 balancing
• Mounts to nema and iec motor frames
• Vertical installation option with iec motor
• Mounts to motor without disassembly
• Back pullout design for ease of maintenance
• One-year warranty
• Ce certified/atex available.