Massive expansion of chemical pump type series
KSB SE & Co. KGaA adds 19 sizes to its MegaCPK type series. This means that users can now choose from 55 sizes with more than 78 hydraulic systems for these standardised chemical pumps. The available materials of grey cast iron, nodular cast iron and cast steel, stainless steel as well as duplex and special alloys, such as titanium and Hastelloy, result in a very wide range of applications. Fluids that require heating or cooling can also be transported.
The pumps are primarily characterised by their high output per size and their low energy consumption. Not only does this save electricity in operation, it also reduces the user’s initial investment costs. The developers placed particular emphasis on good suction behaviour with a low NPSH value in order to minimise the risk of cavitation, thus enabling smooth and stable pump operation even under difficult operating conditions. This ensures a high degree of reliability and improves the availability of an entire system.
By using the finite element method (FEM), a calculation method for the simulation of solids, the developers were able to achieve a high degree of strength and rigidity of the installed components while at the same time optimising the use of materials. After optimising all hydraulic contours by means of computational fluid dynamics (CFD), the improvements were verified in extensive test set-ups.
The new seal chamber design allows the installation of gland packings, all common mechanical seals compliant with EN 12756, as well as a large number of cartridge-type mechanical seals. Fully confined casing gaskets and minimised axial thrust ensure long service lives. To control and monitor operation, the pumps can be equipped with speed control, vibration and bearing temperature measurement and operating point monitoring.
In line with KSB’s common practice for industrial pumps, every pump is supplied to the customer with the impeller diameter trimmed exactly to the duty point. Impeller trimming combined with the large range of pump sizes available for selection helps ensure that the energy consumption of pumps is kept to the minimum necessary, even if they are run at fixed speed.