Inqubo Yekhemikhali
Ezindaweni zezimboni ezinejubane elikhulu, uthuli oluningi olugxilile, izinga lokushisa eliphezulu kanye nokugqwala okuphezulu, kulula ukubangela ukulimala kwezigxivizo zenjoloba nezinto zokuvala ama-valve anezimpawu ezithambile.Ngakho-ke, idinga ama-valve enziwe ngokuphepha okungenakuqhathaniswa nokumelana engqondweni.Amavalvu e-COVNA PTFE athuthukisa izinto zokuvala ezikhona futhi andise impilo yawo yesevisi.Sekuyiminyaka sikhiqiza ama-valve angokwezifiso akwazi ukuphatha izicelo zokucubungula amakhemikhali ezidinga kakhulu iminyaka.