Isihlungi se-duplex sakhiwe ngesilinda sokuhlunga, ikhava yomgqomo, i-valve, inethi yesikhwama sokuhlunga, igeji yokucindezela nezinye izinto, kanti okokusebenza kwenziwa ngezinto zensimbi engagqwali. Ipayipi lokuxhuma lesihlungi esikabili lithatha indlela yokuxhuma inyunyana noma i-clamp, futhi amavalvu okungenisa nokuphuma ayavulwa futhi avalwe ngamavalvu amabili amabhola anezindlela ezintathu. Izihlungi ezimbili zesilinda esisodwa zihlanganiswe kusisekelo somshini owodwa, futhi asikho isidingo sokuma lapho uhlanza isihlungi ukuze kuqinisekiswe ukusebenza kwaso okuqhubekayo. Kuyidivayisi yokuhlunga yomugqa wokukhiqiza ongami. Isici sokuhlunga sesihlungi esikabili, ngaphezu kokusebenzisa isihlungi sensimbi engagqwali, singaphinda sisebenzise isitayela sekhekheba lezinyosi i-fibre cotton degreased, engahlunga usayizi wezinhlayiyana 1 μ Izinhlayiya ezingenhla.

Umgomo wokusebenza wesihlungi esiyi-duplex: Ukumiswa kuphonswa egumbini ngalinye lesihlungi elivaliwe lesihlungi, futhi ngaphansi kwesenzo sokucindezela kokusebenza, kukhishwa ngesihlungi. Izinsalela zokuhlunga zishiywa kuhlaka ukuze zenze ikhekhe lokuhlunga, ngaleyo ndlela kuzuzwe ukuhlukaniswa koketshezi oluqinile. I-filtrate igeleza ingene esikhwameni sokuhlunga ngepayipi le-inlet eseceleni le-casing yesihlungi. Isikhwama sokuhlunga ngokwaso sifakwe kubhasikidi wemeshi oqinisiwe, futhi uketshezi lungena ngesikhwama sokuhlunga esidingekayo sezinga le-fineness ukuze kutholwe isihlungi esifanelekayo. Izinhlayiya zokungcola zitholwa yisikhwama sokuhlunga.