Plastics
PFA (lining)Perfluoroalkoxy (PFA) is a type of fluoropolymer with properties similar to polytetrafluoroethylene (PTFE). It differs from the PTFE resins in that it is melt-processable using conventional injection molding and screw extrusion techniques. PFA was originally invented by DuPont and is sold today under several brand names:
PFA shares PTFE's useful properties of low coefficient of friction and non-reactivity, but is more easily formable. Furthermore, PFA is softer than PTFE and melts at 305 °C. Casing outside: ductile iron EN-GJS-400-18-LT (GGG 40.3) |
PTFE / carbonPolytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene which finds numerous applications. PTFE is most well known by the DuPont brand name Teflon®. PTFE is a fluorocarbon solid, as it is a high molecular weight compound consisting wholly of carbon and fluorine. PTFE has one of the lowest coefficients of friction against any solid. It is very non-reactive, partly because of the strength of carbon–fluorine bonds, and so it is often used in pumps for reactive and corrosive chemicals. The properties of CP’s PTFE / carbon pump casings are optimized by a tailored addition of carbon compounds. |
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PTFE / virginalPolytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene which finds numerous applications. PTFE is most well known by the DuPont brand name Teflon®. PTFE is a fluorocarbon solid, as it is a high molecular weight compound consisting wholly of carbon and fluorine. PTFE has one of the lowest coefficients of friction against any solid. It is very non-reactive, partly because of the strength of carbon–fluorine bonds, and so it is often used in pumps for reactive and corrosive chemicals. The properties of CP’s PTFE / virginal pump casings are optimized by using virginal PTFE. |
PVDFPolyvinylidene Fluoride (PVDF) is a highly non-reactive and pure thermoplastic fluoropolymer. This specialty plastic material is used generally in applications requiring the highest purity, strength, and resistance to solvents, acids, bases and heat. Compared to other fluoropolymers, it has an easier melt process because of its relatively low melting point of around 177°C. PVDF can be injected, molded or welded and is commonly used in the chemical, semiconductor, medical and defense industries, as well as in lithium ion batteries. These CP pumps are available: MSKP |