Zopangidwa ndi fluorinevalavu ya butterflyndi mtundu wa valavu akalowa kaŵirikaŵiri ntchito asidi ndi alkali ndi zina zowononga TV.Zakhala zikugwiritsidwa ntchito kwambiri mu mafuta, mankhwala, mankhwala, zitsulo, mphamvu zamagetsi ndi mafakitale ena.Chifukwa cha zovuta zamapangidwe ake komanso zovuta za zida zomangira Kusiyanasiyana, nthawi zambiri ogwiritsa ntchito sadziwa momwe angayambitsire kusankha, nkhaniyi ifotokoza momwe angasankhire valavu ya butterfly yokhala ndi fluorine.
1. Valavu ya butterfly yokhala ndi fluorine ndi pulasitiki yomwe imakulungidwa pamwamba pa zitsulo zotayidwa kapena zitsulo zosapanga dzimbiri ndi gulu la valve la disc lomwe limakhudzana ndi madzi.Cholinga cha dzimbiri.Popeza pulasitiki imakhudzana ndi sing'anga, kuuma kwake ndi kosauka, ndipo sing'anga yomwe imagwiritsidwa ntchito sayenera kukhala ndi tinthu tating'onoting'ono tolimba, makristasi, zonyansa, ndi zina zotero, kuti valavu isawonongeke pakati pa valve, chingwe cha fluorine. wa mpando wa valve kapena wosanjikiza wa fluorine panthawi yotsegula ndi kutseka kwa valve.Fluorine imatuluka.Kwa sing'anga yokhala ndi tinthu tating'ono tolimba, makhiristo ndi zonyansa, posankha, pakatikati pa valavu ndi mpando wa valavu ukhoza kusankhidwa kuchokera ku ma alloys osagwirizana ndi dzimbiri, monga INCONEL, MONEL, Hastelloy, etc.
2. Kutentha kwa sing'anga yomwe imagwiritsidwa ntchito ndi valavu ya butterfly yokhala ndi fluorine: pulasitiki ya fluorine yomwe imagwiritsidwa ntchito ndi F46 (FEP), ndipo kutentha kwa sing'anga yomwe imagwiritsidwa ntchito sikungapitirire 150 ° C (kutentha kwa sing'anga kumatha kufika 150 ° C mu nthawi yochepa, ndipo kutentha kuyenera kuyendetsedwa mkati mwa 120 ° C kwa nthawi yaitali) Kupanda kutero, F46 ya F46 ya zigawo za valve ndizosavuta kufewetsa ndi kusokoneza, zomwe zimapangitsa kuti valve itseke mopanda imfa komanso kutayikira kwakukulu.Ngati kutentha kwa sing'anga yomwe imagwiritsidwa ntchito ndi pansi pa 180 ℃ kwakanthawi kochepa komanso pansi pa 150 ℃ kwa nthawi yayitali, fluoroplastic ina ingagwiritsidwe ntchito.
-PFA, koma PFA yokhala ndi fluoroplastics ndiyokwera mtengo kuposa F46 yokhala ndi mzere.
3. Kusiyana kwa kupanikizika ndi kuthamanga kuyenera kuyendetsedwa mkati mwazovomerezeka.Ngati kusiyana kwa kupanikizika ndi kupanikizika kuli kwakukulu kwambiri, n'zosavuta kuwononga chisindikizo panthawi yotsegula ndi kutseka kwa valve, zomwe zidzakhudza ntchito yosindikiza ya valve.
4. Mitundu ingapo ya zida zowononga mafakitale nthawi zambiri si mtundu umodzi wa asidi, alkali, ndi mchere.Izi zimapangitsa kukhala kovuta kusankha yoyenera akalowa zakuthupi, amene amafuna mabuku kusankha magawo monga madzi zikuchokera chiŵerengero, ndende, sing'anga kutentha, tinthu kukula, ndi otaya mlingo wa sing'anga.
5. Valve ya butterfly yokhala ndi fluorine iyenera kusankhidwa molondola malinga ndi mlingo wofunikira (Cv value).Mtengo wa CV wa vavu yagulugufe wokhala ndi fluorine ndi wocheperako kuposa wagulugufe wamba wamba ndi valavu ya butterfly ya flange.Posankha, kukula kwake ndi kutsegulira kwa valve ya butterfly yokhala ndi fluorine iyenera kuwerengedwa molingana ndi mlingo wofunikira (mtengo wa Cv) ndi zina zamakono.Ngati kukula kwa valavu kumasankhidwa kukhala kwakukulu kwambiri, mosakayikira kumapangitsa kuti valavu ikhale yotseguka kwa nthawi yaitali.Kugwira ntchito pansi pazing'onozing'ono, kuphatikizapo kupanikizika kwapakati, kumapangitsa kuti valavu ndi ndodo zisokonezeke ndi sing'anga kuti valavu igwedezeke.Ndodo yapakati ya valve idzasweka ngakhale pansi pa mphamvu ya sing'anga kwa nthawi yaitali.Posankha mitundu yosiyanasiyana ya ma valve opangidwa ndi fluorine, ogwiritsa ntchito ayenera kumvetsetsa ndi kumvetsetsa momwe angagwiritsire ntchito luso lamakono momwe angathere, kuti athe kusankhidwa ndikugwiritsidwa ntchito bwino, ndipo moyo wautumiki wa valve ukhoza kusinthidwa.Pakadutsa kuchuluka kwaukadaulo wogwiritsiridwa ntchito, iyenera kuperekedwa kwa wopanga, kukambitsirana pamodzi, ndikutengera njira zofananira kuti zithetse.6. Peŵani zinthu zoipa.Vavu yokhala ndi fluorine iyenera kupewa kugwiritsa ntchito kupanikizika koyipa mu payipi.Ngati pali kupanikizika koipa, chingwe cha fluorine m'kati mwa valavu chidzayamwa (kuphulika) ndi kutsekedwa, zomwe zidzachititsa kuti valavu itseguke ndikutseka kuti isagwire bwino.