PVC (polyvinyl chloride) le UPVC (unplasticized polyvin chloride) ke lisebelisoa tse sebelisoang haholo ha ho etsoa li-valve.

Lisebelisoa tsena li tsejoa ka ho tšoarella ha tsona, ho hanyetsa lik'hemik'hale, le ho khoneha, ho etsa hore e be likhetho tse ratoang bakeng sa lisebelisoa tse fapaneng tsa indasteri le tsa bolulo. Li-valve tsa diaphragm, haholo-holo, ke likarolo tsa bohlokoa lits'ebetsong tse ngata tsa taolo ea mokelikeli, 'me ho utloisisa melao-motheo ea PVC diaphragm valves ho ka fana ka leseli la bohlokoa mabapi le ts'ebetso ea bona le ts'ebeliso ea bona.

Molao-motheo oa valve ea PVC ea diaphragm o holim'a moralo oa eona, o nang le diaphragm e feto-fetohang e behiloeng ho laola ho phalla ha metsi ka har'a valve. Ha valve e koalehile, diaphragm e koala 'mele oa valve, e thibela ho phalla ha mokelikeli. Ha valve e bulehile, diaphragm e kobeha hole le 'mele oa valve, e lumella mokelikeli hore o fete. Mokhoa ona o bonolo empa o sebetsa hantle o etsa hore li-valve tsa PVC tsa diaphragm li loketse ho laola phallo ea lino tse fapaneng, ho kenyelletsa le lintho tse senyang le tse senyang.

Tšebeliso ea PVC le UPVC ho li-valve tsa diaphragm e fana ka melemo e mengata. Lisebelisoa tsena ha li khone ho bola, li etsa hore e be tse loketseng ho sebetsana le lik'hemik'hale tse mabifi le li-acids. Ho feta moo, li-valve tsa PVC le tsa UPVC li bobebe ebile li bonolo ho li kenya, li fokotsa litšenyehelo tsa basebetsi le tlhokomelo. Libaka tsa tsona tse ka hare tse boreleli li boetse li fokotsa khohlano ea mokelikeli, e leng se bakang taolo e nepahetseng ea phallo le ho fokotsa tšebeliso ea matla.

Ho feta moo, li-valve tsa PVC le tsa UPVC li fumaneha ka mefuta e fapaneng ea boholo le litlhophiso, li etsa hore li tšoanelehe bakeng sa lits'ebetso tse fapaneng liindastering tse joalo ka kalafo ea metsi, ts'ebetso ea lik'hemik'hale le lits'ebetso tsa nosetso. Ho feto-fetoha ha bona le ho sebetsa hantle ha bona ho tlatselitse ho amoheleheng ha bona ho pharaletseng libakeng tsa indasteri le tsa bolulo.

Qetellong, molao-motheo oa li-valve tsa PVC tsa diaphragm, tse kopantsoeng le tšebeliso ea lisebelisoa tsa PVC le UPVC, li hatisa bohlokoa ba likarolo tsena tsamaisong ea ho laola metsi. Ts'ebetso ea bona e tšepahalang, ho hanyetsa lik'hemik'hale, le ho baballa litšenyehelo li etsa hore e be tsa bohlokoa haholo bakeng sa lits'ebetso tse fapaneng, 'me tsoelo-pele ea bona e tsoelang pele le boqapi bo tla ntlafatsa bokhoni ba bona nakong e tlang.