Iivalvu zebholaZisetyenziswa kakhulu kwiinkqubo zaselwandle ngenxa yesakhiwo sazo esilula, ukuvala ngokuqinileyo, kunye nokusebenza ngokukhawuleza. Kwiinqanawa, zihlala zifumaneka kwiinkqubo ze-bilge, iinkqubo ze-ballast, kunye nemigca yokudlulisa ipetroli, apho ukuvalwa okuthembekileyo kubalulekile.
Ukuze zilungelelanise iimeko ezinzima zaselwandle, iivalvu zebhola zaselwandle zenziwe ngezinto ezimelana nokugqwala ezifana nobhedu, ubhedu, okanye intsimbi engagqwaliyo (316). Ezi zinto zikhusela ekugqwaleni kwamanzi olwandle kwaye zandisa ubomi benkonzo. Uninzi lwazo lugqunywe okanye lugqunywe nge-epoxy okanye i-nickel plating ukuze lubonelele ngomaleko owongezelelweyo wokhuselo.
Olunye uhlengahlengiso oluphambili luyilo oluncinci. Isithuba sincinci kwiinqanawa, ngoko ke iivalvu zebhola zaselwandle zenziwe ngobude bomzimba obufutshane ngelixa zigcina amandla okuhamba apheleleyo. Ukongeza, uyilo oludadayo okanye olufakwe kwi-trunnion luqinisekisa ukusebenza kakuhle nokuba phantsi koxinzelelo olutshintshatshintshayo.
Ngokwembono yolondolozo, ukuqhaqhwa okulula kunye nezihlalo kunye nezitywino ezinokutshintshwa zivumela ukulungiswa ngokukhawuleza elwandle. Xa zidityaniswe nokuthobela umgangatho we-ISO okanye we-DIN, ezi mpawu zenza iivalvu zebhola zaselwandle zibe lukhetho oluthembekileyo kubakhi beenqanawa kunye nabaqhubi kwihlabathi liphela.
Ixesha leposi: Novemba-14-2025