ConcentricPTFE hauv ob sab phlu kuj hu ua fluorine yas lined corrosion resistant li qub, yog fluorine yas molded rau hauv lub puab phab ntsa ntawm cov hlau los yog hlau valve bearing qhov chaw los yog sab nrauv ntawm lub valve puab qhov chaw.Fluorine plastics ntawm no feem ntau suav nrog: PTFE, PFA, FEP thiab lwm yam.FEP lined npauj npaim valve, teflon coated npauj npaim valve thiab FEP kab npauj npaim valve feem ntau yog siv rau hauv cov xov xwm muaj zog corrosive.