Kwishishini le-valve, ibhola ye-tungsten kunye ne-plug valve zizixhobo ezibini zokuvula kunye nokuvala, nangona zombini zisetyenziselwa ukulawula i-fluids, umsebenzi ocacileyo wesakhiwo, umsebenzi kunye nemeko yesicelo.
Ibhola ye-tungsten ye-tungsten ye-tungsten ye-tungsten ye-tungsten, njengeyona nto iphambili kwi-valve yebhola, ubume bayo bulula. Ihlala iyibhola eyenziwe nge-carbide evula kwaye ivala ngokujikeleza i-90 ° ajikelezwe yi-axis yesiqu. Lo Uyilo lwenza ibhola yebhobho ye-carbide inezibonelelo zokunganyangeki kancinci kunye nokuvula ngokukhawuleza nokuvalwa. I-valve ye-plug isebenzisa umzimba weplagi kunye nomngxunya njengamalungu okuvula kunye nokuvala, kwaye iplagi yomzimba ijikeleza i-valve stem ukuya kufezekisa isenzo sokuvula kunye nokuvala. I-plug yomzimba we-plug valve ubukhulu becala i-cone okanye i-cylinder, ehambelana nomphezulu we-orifice yebhunga le-valve ukwenza i-valve ye-valve.
Ngenxa yobunye bezinto zayo, ibhola ye-tungsside ye-tungsten ye-valve inxibe ngokuchasene nokunganyangeki kwengqondo, kwaye inokugcina intsebenzo yezigidi kunye nengcinezelo ephezulu. Kwangelo xesha, ibhola yebhotile ye-carbide ineendawo zokunganyangeki ezincinci kunye nokuvula ngokukhawuleza nokuvalwa, okulungele izihlandlo ezininzi ukunqumala i-flweid. I-pilve ye-plugi ineempawu zobume ezilula, ukuvula ngokukhawuleza nokuvalwa, kunye nokunganyangeki kwe-fluid ephantsi, kwaye kunokuphinda uqhagamshele okanye unqumle umbhobho kwiimeko zongxamiseko ezifana neengozi. Xa kuthelekiswa ne-valve yesango kunye ne-hluaves, i-valves ye-plug ziguquguquka ngakumbi ukusebenza kwaye zikhawuleze ukutshintshela.
Ngenxa yendlela yayo yokusebenza ngokugqibeleleyo, i-tungsten ye-tungsside ye-vallide isetyenziswe ngokubanzi kwiinkqubo zepibhoreji kwi-petroleum, amachiza, amandla ombane kunye namanye amashishini, ngakumbi amashishini afuna ukuvulwa rhoqo. I-pplig ye-plug isetyenziswa ngakumbi kwi-medium eneqondo lokushisa eliphantsi kunye no-Viscofity ephezulu kunye namacandelo afuna ukutshintshela ngokukhawulezisa, njengokuhanjiswa kwamanzi, unyango lwe-gesware kunye namanye amasimi.
IXESHA LOKUQALA: AUG-15 ukuya ku-2004