Assoma has improved the patented Dry-run Design of its AMX series through a more efficient cooling system. The design of the magnetically driven pump ensures low mechanical loss and therefore high efficiency. The pump made of synthetic and ceramic materials was designed for aggressive media.
Improved dry running, a high hydraulic efficiency and media resistance are the highlights of the new
magnetically driven centrifugal pump series ASV-MAX by ASV Stübbe. The leakage and emission free design is realised in sizes 40×40 und 65×50 for flows up to 39 m³/h and delivery head is up to 34 m.
Using permanent magnets with high energy density allow for a high efficiency. For media that crystallize out ASV Stübbe specially designed the Etching pump. Crystal deposits that build up inside the pump are destroyed by a special labyrinth. In this dry run pump, the shaft crossover into the atmosphere was sealed with a special PTFE lip seal.
For toxic media with special shaft seal requirements the horizontal magnetic drive centrifugal pump MPCHDryRun by Bungartz is a perfect option. The permanently dry running construction is also suitable for solids and gases. The robust, lifetime lubrication rolling bearing and vortex free magnetic drive work independently of the pumped fluid for 3 years without maintenance. Between the back side of the impeller and the shaft bearing there is a labyrinth medium free area filled with barrier gas. This represents a heat barrier with high temperature gradient and therefore ensures low storage temperatures.
NCR by Dickow Dickow Pumpen has remodelled its NCR series and adapted it to the 9th edition of the API 610. The pumps were designed for applications in the chemical, petrochemical and similar industries. Because of a wide ranging materials selection and the possible inclusion of any shaft sealing system according to API 682, these pumps are suitable to deliver almost all media used in these industries. Examples are acids, alkali, chlorinated hydrocarbon, heat transfer oils, fuels, liquid sulphur, plastic fusion, bitumen etc. Worth mentioning is the integrated inducer which realises especially low NPSH values.
Source and more info: impeller
