Iivalvu ziyinxalenye ebalulekileyo yeenkqubo zemibhobho yemizi-mveliso kwaye zidlala indima ebalulekileyo kwinkqubo yemveliso.
ⅠUmsebenzi ophambili wevalvu
1.1 Ukutshintsha nokunqumla imidiya:ivalvu yesango, ivalvu yebhabhathane, ivalvu yebhola ingakhethwa;
1.2 Nqanda ukubuya kwe-medium:ivalvu yokujongainokukhethwa;
1.3 Lungisa uxinzelelo kunye nesantya sokuhamba kwesixhobo: ivalvu yokuvala kunye nevalvu yokulawula ekhethwayo;
1.4 Ukwahlula, ukuxuba okanye ukusasazwa kweendaba: ivalvu yeplagi,ivalvu yesango, ivalvu yokulawula inokukhethwa;
1.5 Ukuthintela uxinzelelo oluphakathi ukuba lungadluli kwixabiso elichaziweyo ukuqinisekisa ukusebenza ngokukhuselekileyo kombhobho okanye izixhobo: ivalvu yokhuseleko inokukhethwa.
Ukukhethwa kweevalvu ikakhulu kuxhomekeke kwindlela yokusebenza engenazingxaki kunye noqoqosho.
ⅡUmsebenzi wevalvu
Kukho izinto ezibalulekileyo ezininzi ezibandakanyekayo, kwaye nantsi ingxoxo eneenkcukacha ngazo:
2.1 Uhlobo lolwelo oluhambisayo
Uhlobo lolwelo: Nokuba ulwelo lulwelo, igesi, okanye umphunga luchaphazela ngokuthe ngqo ukhetho lwevalvu. Umzekelo, ulwelo lunokufuna ivalvu yokuvala, ngelixa iigesi zinokufaneleka ngakumbi kwiivalvu zebhola. Ukubola: Ulwelo olubolayo lufuna izinto ezimelana nokubola ezifana nentsimbi engagqwaliyo okanye iialloyi ezikhethekileyo. Ukubola: Ulwelo olune-viscosity ephezulu lunokufuna ububanzi obukhulu okanye iivalvu ezenzelwe ngokukodwa ukunciphisa ukuvaleka. Umxholo wamasuntswana: Ulwelo oluqulethe amasuntswana aqinileyo lunokufuna izinto ezimelana nokuguguleka okanye iivalvu ezenzelwe ngokukodwa, ezifana neevalvu zokuncitshiswa.
2.2 Umsebenzi wevalvu
Ulawulo lweswitshi: Kwiimeko apho kufuneka umsebenzi wokutshintsha kuphela, iivalvu zebhola okanyeiivalvu zesangozizinto eziqhelekileyo.
Ulawulo lokuhamba: Xa kufuneka ulawulo oluchanekileyo lokuhamba, iivalvu zeglobe okanye iivalvu zokulawula zifanelekile ngakumbi.
Ukuthintela ukubuya komthamo:Jonga iivalvuzisetyenziselwa ukuthintela ukubuyela kolwelo.
I-Shunt okanye i-Merge: I-valve eneendlela ezintathu okanye i-valve eneendlela ezininzi isetyenziselwa ukujika okanye ukudibanisa.
2.3 Ubungakanani bevalvu
Ubungakanani bePhayiphi: Ubungakanani bevalvu kufuneka buhambelane nobukhulu bephayiphi ukuqinisekisa ukuba ulwelo luhamba kakuhle. Iimfuno zokuhamba: Ubungakanani bevalvu kufuneka buhambelane neemfuno zokuhamba kwenkqubo, kwaye inkulu kakhulu okanye incinci kakhulu iya kuchaphazela ukusebenza kakuhle. Indawo yoFakelo: Imida yendawo yoFakelo inokuchaphazela ukukhethwa kobungakanani bevalvu.
2.4 Ukulahleka kwevalvu yokuxhathisa
Ukwehla koxinzelelo: Ivalvu kufuneka inciphise ukwehla koxinzelelo ukuze ithintele ukuphazamisa ukusebenza kakuhle kwenkqubo.
Uyilo lwetshaneli yokuhamba: Iivalvu zebhore ezipheleleyo, ezifana neevalvu zebhola zebhore ezipheleleyo, zinciphisa ukulahleka kokurhuqa.
Uhlobo lweValve: Ezinye iivalve, ezifana neevalve zebhabhathane, azinawo amandla okuxhathisa xa zivulwa, nto leyo eyenza ukuba zilungele amaxesha okwehla koxinzelelo oluphantsi.
2.5 Ubushushu bokusebenza kunye noxinzelelo lokusebenza lwevalvu
Uluhlu lobushushu: Izixhobo zevalvu kufuneka zilungelelane nobushushu obumanzi, kwaye izixhobo ezimelana nobushushu kufuneka zikhethwe kwiindawo ezinobushushu obuphezulu okanye obuphantsi.
Inqanaba loxinzelelo: Ivalvu kufuneka ikwazi ukumelana noxinzelelo oluphezulu lokusebenza kwenkqubo, kwaye inkqubo yoxinzelelo oluphezulu kufuneka ikhethe ivalvu enenqanaba loxinzelelo oluphezulu.
Impembelelo edibeneyo yobushushu kunye noxinzelelo: Iindawo ezinobushushu obuphezulu kunye noxinzelelo oluphezulu zifuna ingqalelo ekhethekileyo yamandla ezinto kunye neempawu zokutywina.
2.6 Izinto ezisetyenziswa kwivalvu
Ukumelana nokugqwala: Khetha izinto ezifanelekileyo ngokusekelwe ekungcoleni kolwelo, njengentsimbi engagqwaliyo, iHastelloy, njl.
Amandla oomatshini: Izinto zevalvu kufuneka zibe namandla oomatshini aneleyo okumelana noxinzelelo olusebenzayo.
Ukuguquguquka kobushushu: Izinto ezisetyenzisiweyo kufuneka zilungelelane nobushushu obusebenzayo, imeko-bume yobushushu obuphezulu ifuna izinto ezimelana nobushushu, kwaye imeko-bume yobushushu obuphantsi ifuna izinto ezimelana nokubanda.
Uqoqosho: Ngokusekelwe ekuhlangabezaneni neemfuno zokusebenza, khetha izixhobo ezinoqoqosho olungcono.
Ixesha leposi: Julayi-29-2025
