The Dickow Advantage

Dickow's Construction and Mechanism of the Magnetic Coupling
The main advantage of the magnet coupling is that the pumped liquid is hermetically sealed from the atmosphere. The driving power is transmitted by the motor via the outer magnet coupling and thus, through the magnetic fields to the impeller. Inner and outer magnets are connected synchronously, i.e. the pump speed is equal to the motor speed.

Inner magnets are protected from pumped media by a hermetically sealed sleeve welded to the rotor. Through proper selection of rotor diameter and axial magnet length, couplings can be adjusted to the drive power. Maximum rated coupling power available at present is 250 HP/3500 RPM.

Wear-resistant SIC-Slide Bearings
Only the availability of pure Silicon Carbide as a slide bearing material made possible the all-purpose application of magnetic driven pumps in the chemical and petrochemical industry. The excellent wear and corrosion resistance of this material permits application in transport of all kinds of liquids, like solvents, acids, hydroxide, etc. The sleeve-type SIC bearings arranged in the pumpage, need no lubrication flow. Only a stable fluid film between the bearing surfaces (similar to the situation between seal faces) is required for true running conditions. This, in connection with generous dimensioned internal clearances, allows also handling of solid containing liquids.

Product Range
The DICKOW product range includes the following series of magnetic coupled pumps. Standard material for casings and wetted parts: Ductile Iron, Cast Iron, 316 Stainless Steel and Hastelloy C-4. Optional materials include duplex stainless steel, including alloy 20, CD4MCU and others.