Iimbangela zeivalve yebholaukuvuza kwangaphakathi, izizathu zokuvuza kwangaphakathi kwevalve ngexesha lokwakha:

(1) uthutho olungafanelekanga kunye nokuphakanyiswa kubangela umonakalo opheleleyo wevalve, okhokelela ekuvuzeni kwevalve;

(2) Xa ushiya umzi-mveliso, uxinzelelo lwamanzi alomiswa kwaye unyango lwe-anti-corrosive yevalve, olukhokelela ekudlekeni kwendawo yokutywina kunye nokuvuza kwangaphakathi;

(3) ukhuseleko lwendawo yokwakha alukho, iziphelo zevalvu azixhotyiswanga ngamacwecwe angaboniyo, amanzi emvula, isanti kunye nobunye ukungcola kwisitulo sevalve, okukhokelela ekuvuzeni;

(4) xa ufaka, akukho grisi ifakwe kwisitulo sevalve, ekhokelela kukungcola ngasemva kwesitulo sevalve, okanye ukutsha kwewelding okubangelwa kukuvuza kwangaphakathi;

(5) Ivalve ayifakwanga kwindawo evulekileyo epheleleyo, eyenza umonakalo kwibhola, kwi-welding, ukuba i-valve ayikho kwindawo evulekile ngokupheleleyo, i-welding spatter iya kubangela umonakalo kwibhola, xa ibhola kunye ne-welding spatter kwi-switch iya kubangela umonakalo ngakumbi kwisihlalo sevalve, okubangela ukuvuza kwangaphakathi;

(6) i-welding slag kunye nezinye ii-relics zokwakha ezibangelwa ngumkrwelo womphezulu wokutywina;

Umzi-mveliso okanye ixesha lofakelo aluchanekanga olubangelwa ukuvuza, ukuba umkhono we-stem drive okanye ezinye izixhobo kunye nendibano ye-Angle dislocation, i-valve iya kuvuza.

Izizathu zokuvuza kwangaphakathi kwevalve ngexesha lokusebenza:

(1) Esona sizathu sixhaphakileyo sesokuba umphathi wokusebenza akasigcini isivalo sevalvu ethathela ingqalelo ixabiso elibizi kakhulu lokusigcina, okanye akalwenzi ugcino lothintelo kwisivalo ngenxa yokungabikho kolawulo lwevalvu yenzululwazi kunye neendlela zokuyigcina, okukhokelela kukusilela kwesixhobo kwangaphambili;

(2) Ukuvuza kwangaphakathi okubangelwa ukusebenza okungafanelekanga okanye ukungaphumeleli ukugcina ngokuhambelana neenkqubo zokulondoloza;

(3) Ngexesha lokusebenza okuqhelekileyo, izixhobo zokwakha zikrwempa indawo yokutywina, okukhokelela ekuvuzeni kwangaphakathi;

(4) ukufakwa kwehagu ngokungafanelekanga kubangele umonakalo kumphezulu wokutywina obangele ukuvuza kwangaphakathi;

(5) ukugcinwa kwexesha elide okanye ukungasebenzi kwevalve, okukhokelela ekubeni isihlalo sevalve kunye nebhola itshixiwe, xa uvula kunye nokuvala ivalve kubangele umonakalo wokutywina ukwenza ukuvuza kwangaphakathi;

(6) Ukutshintsha kwevalve akukho kwindawo yokubangela ukuvuza kwangaphakathi, nayiphi naivalve yebholanokuba ivuliwe okanye ivaliwe, ukuthambeka ngokubanzi 2° ~ 3° kunokubangela ukuvuza;

(7) ezininzi ubukhulu obukhuluivalve yebholaubukhulu becala stem stop block, ukuba ukusetyenziswa kwexesha elide, ngenxa umhlwa kunye nezinye izizathu kwisiqu kunye nesiqu stop block uya kuqokelela umhlwa, uthuli, ipeyinti kunye nezinye sundries, ezi sundries ziya kubangela ivalve ayikwazi ukujikeleziswa kwindawo kwaye ibangele ukuvuza - ukuba ivalve ingcwatywe, Ukwandisa isiqu kuya kudala kwaye kuwise umhlwa ngakumbi kunye nokungcola okubangela ukuba ivalve ye-valve ivale indawo kunye nokungcola okubangela ukuba i-valve ibe yi-valve.

(8) I-activator jikelele nayo ilinganiselwe, ukuba ixesha elide libangela ukuhlwa, ukuqina kwegrisi okanye ukukhulula umda webholithi uya kwenza umda awuchanekanga, kubangele ukuvuza;

(9) Indawo yevalve yesivusi sombane isetiwe ngaphambili, kwaye ayikho endaweni yokuba ibangele ukuvuza kwangaphakathi; Abazimasayo ukusilela kokugcinwa kunye nokugcinwa kwamaxesha ngamaxesha, okukhokelela kumafutha omileyo kunye nokutywinwa okuqinileyo, ukuqokelelwa kwamafutha okutywina okomileyo kwisitulo sevalve e-elastic, kuthintele ukuhamba kwesitulo sevalve, okukhokelela ekungaphumeleli kokutywinwa.

Ivalve yebholaiinkqubo zonyango ukuvuza

(1) Okokuqala khangela umda wevalve ukuze ubone ukuba ukuvuza kwangaphakathi kwevalve kungasombululwa ngokulungelelanisa umda.

(2) Okokuqala ngokutofa umlinganiselo othile wegrisi ukubona ukuba inokukumisa ukuvuza, emva koko isantya sokutofa kufuneka sicothe, kwaye siqwalasele utshintsho lwesalathisi somlinganiselo woxinzelelo kwindawo yokukhupha umpu wegrisi ukumisela ukuvuza kwevalve.

(3) ukuba ukuvuza akunakuyekwa, kunokwenzeka ukuba inaliti yokuqala yokutywina amanqatha aqinile okanye ukutywinwa komonakalo owenziwe kukuvuza. Kunconywa ukuba i-valve yokucoca i-valve ifakwe ngeli xesha ukucoca indawo yokutywina ye-valve kunye nesihlalo se-valve. Ngokuqhelekileyo ifakwe ubuncinane isiqingatha seyure, ukuba kuyimfuneko, inokucwina iiyure ezimbalwa okanye iintsuku ezimbalwa, ukuba iphiliswe emva kokuchithwa kwayo yonke into kwaye wenze inyathelo elilandelayo lonyango. Kunqweneleka ukuvula nokuvala ivalve eshukumayo amaxesha amaninzi kule nkqubo.

(4) phinda utofe igrisi, uvule kwaye uvale ivalve ngamaxesha athile, kwaye ukhuphe ukungcola kwigumbi elingasemva lesihlalo kunye nendawo yokutywina.

(5) khangela kwindawo epheleleyo evaliweyo, ukuba kusekho ukuvuza, kufuneka kufakwe isitofu ukuqinisa umgangatho wokutywinwa kwegrisi, ngelixa uvula igumbi levalve yokukhupha umoya, oko kunokuvelisa umahluko omkhulu woxinzelelo, ukutywinwa koncedo, phantsi kweemeko eziqhelekileyo, ngokutofa inqanaba lokutywina ukuvuza kwegrisi kunokupheliswa.

Ukuba kusekho ukuvuza, lungisa okanye ubuyisele ivalve.