Amavalvu esangofuthiamavalvu embulungaama-valve asetshenziswa kakhulu. Lapho ukhetha i-valve yesango noma i-valve ye-globe, kunzima kubasebenzisi abaningi ukwenza isinqumo esifanele. Ngakho-ke uyini umehluko phakathi kwe-valve ye-globe ne-valve yesango, futhi ungayikhetha kanjani lapho isetshenziswa ngempela?
Ngokuvamile, maqondana nokukhethwa kwama-valve ekwakhiweni kwamapayipi, ama-valve esango avame ukusetshenziswa kuma-liquid media, kanti ama-stop valve asetshenziswa kuma-gas media. Womabili ama-globe valve nama-gate valve angama-valves okuvala ayimpoqo. Womabili asunduza idiski nesihlalo sama-valve ukuze akhe uphawu ngokujikeleza i-valve, esikhundleni sokuthembela ekucindezelweni okuphakathi ukuze afinyelele uphawu njenge-ball valve. Umehluko phakathi kwe-globe valve ne-gate valve kanye nomehluko phakathi kokusetshenziswa nobukhulu bawo: Ubude besakhiwo se-valve yesango, okungukuthi, ubude obuphakathi kwezindawo ze-flange bufushane kunobe-valve yokuvala; ukuphakama kokufakwa kanye nokuphakama kokuvula kwe-valve yokuvala kuncane kunokwe-valve yesango. Nakuba konke kuyi-angular strokes, ukuphakama kokuvula kwe-valve yokuvala kuyingxenye kuphela yobubanzi obujwayelekile, isikhathi sokuvula sifushane kakhulu, futhi ukuphakama kokuvula kwe-valve kufana nobubanzi obujwayelekile.
Umehluko endleleni yokugeleza kwe-medium: i-valve yesango iyi-valve yokuvala enezindlela ezimbili, engafinyelela ukuvala kuzo zombili izinkomba, futhi akukho mfuneko yendlela yokufaka. I-valve yokuvala inesakhiwo esimise okwe-S. I-valve yokuvala inesidingo sendlela yokugeleza. I-medium ye-valve yokuvala enobubanzi obungaphansi kwe-DN200 igeleza isuka ngaphansi kwediski iye phezulu kwediski, kanti i-medium ye-valve yokuvala enobubanzi obungaphansi kwe-DN200 igeleza isuka ngaphezu kwediski iye ku-valve. Ngaphansi kwe-flap. Kodwa-ke, i-valve yokuvala kagesi isebenzisa indlela yokungena isuka ngaphezu kwe-valve clack. Njengoba ama-valve amaningi okuma egeleza esuka ngaphansi kwe-valve flap iye phezulu, i-torque yokuvula ye-valve ingancishiswa ngempumelelo, futhi isimo se-water hammer esibangelwa ukudlidliza kokuvula kwe-valve singagwenywa. Umehluko ekumelaneni noketshezi kwe-medium: uma ivuliwe ngokugcwele, yonke indlela yokugeleza kwe-valve yesango idlula ngokuphambeneyo, ngaphandle kokumelana, i-medium ayinawo ukulahleka kokwehla kwengcindezi, futhi i-coefficient yokumelana nokugeleza ingu-0.08-0.12 kuphela. Ngaphezu kwalokho, i-coefficient yokumelana noketshezi ye-valve yokuvala ingu-2.4-6, okuphindwe kathathu-kahlanu kune-coefficient yokumelana nokugeleza kwe-valve yesango. Ngakho-ke, i-valve yokuvala ayifanele izimo zokusebenza ezidinga ukulahleka kwengcindezi ephakathi.
Umehluko ekwakhiweni kobuso bokuvala: ubuso bokuvala bevalvu yokuma buqondile epayipini. Uma ivaliwe, uma ukungcola okuphakathi kusala esivalweni, lapho idiski yevalvu kanye nesihlalo sevalvu yokuvala kudala uphawu, kulula ukulimaza ubuso bokuvala isihlalo sevalvu kanye nevalvu yesango. Ubuso bokuvala bunomphumela wokusula lapho isango lehla, futhi indawo yokuvala ingagezwa, futhi umonakalo wokungcola okuphakathi endaweni yokuvala uncane kakhulu.