productspipe fittings, valves, aseptic diaphragm valves, aseptic tank bottom valves and other high-end products
productspipe fittings, valves, aseptic diaphragm valves, aseptic tank bottom valves and other high-end products
many materials in the chemical industry are recognized as extremely corrosive.in special working conditions concerned withe the
chemical industry,it is important to select the right equipment,pipelines and valves,so as to ensure stable operations.most corrosive
media are usually highly corrosive to metals,and regular metal valves,such as carbon steel and stainless steel valves,will be easily
corroded.even special alloys ,such as hastelloy and monel,have the chance to be corroded.apart from this ,special alloy valves are quite
expensive,have a long processing cycle,and may cause casualties after corrosion.
with the continuous application of new chemical materials and improvement of lining process,fluorine(plastic) lined control valves and shut-off
valves are favored by manufacturers and users for their outstanding performance in safety,reliability and cost-efficiency.they are more and more
widely used in highly corrosive media processing in petroleum,chemical,pharmaceutical and other industries.however,fluorine(plastic) lined valves
cannot adapt to all corrosive working conditions.just like other valves,it requires expertise to select and use the right fluorine(plastic) lined valves.
the temperature of fluorine(plastic) lined valves should not be higher than 30% ofits upper limit.
according to public information,the operation temperature of fluorine(plastic)lined valve varies from
different materials:ptfe(-60-150℃）,should ptfe pfa(-60-180℃）,and ptfe f46((-20-120℃）.
however ,the actual temperature will be different because of different materials and pressures.in the
logn run,the temperature should generally be about 30% lower than the upper limit,otherwise ,the lining
of each component of the valve can easily be deformed,resulting in large leakage or failure to open/close the valve normally.
