ZokhazikikaPTFE Lining Valve yomwe imadziwikanso kuti fluorine pulasitiki yokhala ndi dzimbiri zosagwira mavavu, ndi pulasitiki ya fluorine yomwe imapangidwira mkati mwa khoma lamkati lazitsulo kapena zitsulo zokhala ndi valavu kapena kunja kwa valavu zamkati.Mapulasitiki a fluorine apa makamaka akuphatikizapo: PTFE, PFA, FEP ndi ena.Gulugufe wokhala ndi FEP, valavu yagulugufe yokhala ndi teflon ndi valavu yagulugufe ya FEP nthawi zambiri amagwiritsidwa ntchito popanga zida zowononga kwambiri.