THE SAVINO BARBERA PUMP DESIGN AVOIDS HAVING METAL COMPONENTS IN FLUID CONTACT
When handling hazardous fluids or industrial liquids, the main hazard is usually corrosion. This is why we have replaced metal with plastic and protected the few components that have to be made of metal (for obvious reasons relating to mechanical support) with chemically inert material: all the wetted parts of our pumps and mixers are made entirely of thermoplastics or coated with technical polymers, making them insensitive to chemical aggression. The main corrosion-resistant plastics that we use to manufacture our industrial equipment are PP, PVC and PVDF.
RIGOROUS SELECTION OF MATERIALS
The plastic materials used in the construction of all our products are meticulously selected on the basis of the characteristics of the corrosive liquid treated. The ability to select the most appropriate thermoplastic material is one of Savino Barbera’s main skills: our choice is always functional to the specific use that the equipment we produce is intended for. In order to determine which plastic is chemically compatible with the liquid to be pumped (PP, PVC or PVDF), it is necessary to have a precise idea of the chemical and physical characteristics of the liquid to be handled. Every plastic material has a different chemical compatibility with the various corrosive liquids. The fundamental data for selecting the material of the wetted parts of the pump (those that come into contact with the liquid) are: chemical nature, concentration, temperature, specific weight, possible presence of solids. A small example: different concentrations of the same acid may require different plastic materials.