Iteyiphu yotywino lomsonto (ekwaziwa ngokuba yi-PTFE tape okanye iteyiphu yomtywini) yifilimu ye-polytetrafluoroethylene (PTFE) esetyenziselwa ukutywina imisonto yombhobho. Iteyiphu ithengiswa isikwe kububanzi obuthile kwaye inxeba kwi-spool, okwenza kube lula ukujikeleza imisonto yombhobho. Ikwayaziwa ngegama lorhwebo elenziwe lafana ne-Teflon tape; ngelixa iTeflon eneneni iyafana ne-PTFE, iiChemours (abanini-phawu zorhwebo) bathathela ingqalelo ukusetyenziswa kweTeflon ngendlela engafanelekanga, ngakumbi njengoko bengasayivezi iTeflon kwiteyiphu yeteyiphu. Imisonto ekubambeni xa ingasikrolwanga.Iteyiphu ikwasebenza njengesizalisi esinokukhubazeka kunye nesithambisi sentambo, inceda ukutywina umdibaniso ngaphandle kokuqina okanye ukwenza kube nzima ngakumbi ukuqinisa, kwaye endaweni yoko ukwenza kube lula ukuqinisa.
Ngokuqhelekileyo iteyiphu isongelwe kumsonto wombhobho izihlandlo ezithathu phambi kokuba ijijwe endaweni yayo. Ngokuqhelekileyo isetyenziselwa urhwebo kwizicelo ezibandakanya iinkqubo zamanzi ezinoxinzelelo, iinkqubo zokufudumeza eziphakathi, kunye nezixhobo zoxinzelelo lomoya.
Iintlobo
Iteyiphu yetywina yomsonto idla ngokuthengiswa kwiispools ezincinci.
Kukho imigangatho emibini yase-US yokumisela umgangatho wayo nayiphi na iteyiphu ye-PTFE. I-MIL-T-27730A (inkcukacha zomkhosi eziphelelwe lixesha esasetyenziswa ngokuqhelekileyo kushishino e-US) ifuna ubuncinane bokutyeba obuyi-3.5 mils kunye nobuncinci be-PTFE yococeko lwe-99%. imfuno yobukhulu be-MIL-T-27730A kwaye yongeza uxinano oluncinci lwe-1.2 g/cm3.Imigangatho efanelekileyo inokwahluka phakathi kwamashishini; iteyiphu yofakelo lwerhasi (kwimimiselo yerhasi yase-UK) kufuneka ibe ngqindilili kunaleyo yamanzi. Nangona i-PTFE ngokwayo ilungele ukusetyenziswa neoksijini yoxinzelelo oluphezulu, ibakala leteyiphu kufuneka laziwe ukuba alinagrisi.
Iteyiphu yokutywina esetyenziswa kwimibhobho yokusetyenziswa kwemibhobho idla ngokuba mhlophe, kodwa ikwafumaneka ngemibala eyahlukeneyo. Ihlala isetyenziselwa ukuhambelana nemibhobho enekhowudi yombala (i-US, iCanada, i-Australia kunye ne-New Zealand: i-yellow yegesi yendalo, eluhlaza kwi-oksijini, njl.). Ezi khowudi zombala zeteyiphu yokutywinwa kwentambo zaziswa nguBill Bentley we-Unasco Pty Ltd ngeminyaka yoo-1970. E-UK, iiteyiphu isetyenziswa kwiireli ezinemibala, umz. iireli ezityheli zerhasi, eziluhlaza kumanzi okusela.
Imhlophe - isetyenziswe kwimisonto ye-NPT ukuya kuthi ga kwi-intshi ye-3/8
Mthubi – isetyenziswa kwimisonto ye-NPT 1/2 intshi ukuya kwi-intshi ezi-2, ehlala ibhalwe “tape yegesi”
Ipinki - isetyenziswe kwimisonto ye-NPT i-1/2 intshi ukuya kwi-intshi ye-2, ikhuselekile kwipropane kunye namanye amafutha e-hydrocarbon
Uhlaza – i-PTFE engenawoyile esetyenziswa kwimigca yeoksijini kunye nezinye iigesi ezithile zonyango
Grey - iqulethe i-nickel, i-anti-seizing, i-anti-gailling kunye ne-anti-corrosion, esetyenziselwa imibhobho engenasici.
Ubhedu - luqulethe iigranuli zobhedu kwaye luqinisekisiwe njengethambisi yomsonto kodwa hayi isitywini.
EYurophu umgangatho we-BSI BS-7786: 2006 uchaza amanqanaba ahlukeneyo kunye nemigangatho yomgangatho we-PTFE intambo yokutywina intambo.
Ixesha lokuposa: Apr-04-2017