Mag. drive pumps with non contact system to resist dry running

DRY RUN CAPABLE FOR HANDLING TOUGH CHEMICALS
MDM is a wide ranging line of chemical process pumps designed to solve the most demanding chemical handling applications. Two materials of construction and convenient mounting configurations allow MDM to handle many aggressive chemical and high purity applications.

Unexpected dry running won’t damage the pump or interrupt the process. Iwaki’s new design allows the pump to handle these situations with ease. High purity process fluid will not be contaminated by trace metals due to our combination of high purity materials and meticulous construction.

High strength rare earth magnets are totally encapsulated within fluoro-resin mouldings. Small, lightweight and perfectly concentric magnet capsules optimise pump efficiency. An expanded temperature range (up to 300°F), as well as increased solids handling capabilities (up to 10%), provides users with solutions for difficult applications.

Installation and maintenance time is reduced with Iwaki’s compact, close-coupled design. And operating costs are minimised thanks to simple, modular construction and individually replaceable parts.

Non-contact system
With the non-contact system the MDM features a unique mechanism which gives a greatly improved performance against dry running. The high magnet force of the rare earth magnets prevent coming into contact with contact surfaces in the front and rear areas of the pump. Therefore high temperatures are avoided. This greatly improves resistance against dry running in comparison with conventional mag. drive fluoro-resin pumps (only for CF type with high density carbon bearings).

ETFE & PFA are available as standard
Carbon fibre reinforced ETFE and PFA linings can be supplied to cover most applications. PFA being a natural unfilled material generates only few contaminations and makes it ideally suited for transferring of high purity chemicals.

Excellent durability
The fluoro-resin front casings are covered with a ductile iron casing, which add strength and durability. Due to the highest stress under which the rear casing is placed, it is protected by a rear casing cover made of fibre reinforced plastic. Additionally to the higher stability, the eddy current loss caused by the rotating magnetic field is eliminated. Should it come in contact with the magnet capsule, no spark would be generated. Also the magnet capsule is fitted with a metal core to obtain a higher resistance against vibrations.

Back pullout system
In order to facilitate inspection and maintenance, this series employs the back pullout system. This enables one to conduct inspections internally and replace parts without dismantling the piping. The simple modular setup allows easiest maintenance and minimal shut-downs. Most of the service works can be done without leakage.