Kutshanje, iindaba ezimnandi zivela kumzi-mveliso waseJinbin, iqela elikhulu le-DN150 copper rod open rod gate valve lithunyelwe ngempumelelo.

Ivalvu yesango elinyukayolicandelo eliphambili lolawulo kuzo zonke iintlobo zemigca yokudlulisa ulwelo, kwaye intonga yayo yangaphakathi yobhedu idlala indima ebalulekileyo. Intonga yobhedu inokumelana nokugqwala okugqwesileyo, xa ijongene nendawo yokusebenza emanzi, eneasidi kunye ne-alkali, inokumelana ngempumelelo nokukhukuliseka, yandise kakhulu ubomi benkonzo yevalvu yesango elijijekileyo.

Oku kuthetha ukuba nokuba ngumbhobho wokudlulisa izinto ezibangela ukonakaliswa kumashishini eekhemikhali, okanye kwindawo apho inkqubo yokuhambisa amanzi kunye nokukhupha amanzi idibana namanzi ixesha elide, ivalvu yesango le-tem enentonga yobhedu inokusebenza ngokuzinzileyo, inciphisa iindleko kunye nokusetyenziswa kwabasebenzi okubangelwa kukutshintshwa rhoqo.

Kwangaxeshanye, ubhedu lunomoya ofanelekileyo wokushisa, kwinkqubo yokuvula nokuvala rhoqo kwevalvu yesango, lunokususa ngokukhawuleza ubushushu obuveliswa kukungqubana, luphephe ukutshisa okubangelwa kukonakala kwesiqu sevalvu kunye nezitywino, luqinisekise ukuthembeka nokhuseleko lomsebenzi wevalvu yesango, kwaye lubonelele ngenkxaso eqinileyo yokuqhubeka kwenkqubo yemveliso yemizi-mveliso.

Ngokwembono yepropathi yoomatshini, ubume bentonga yobhedu buqinile kwaye bunokuguquguquka okuthile, xa kuthelekiswa nezinye izinto ezibuthathaka, ekuvulekeni nasekuvalweni kwe-torque kunye namandla okubetha, akukho lula ukuphula, ukuze ulawulo oluchanekileyo lwevalvu yesango lokutywina lubonelele ngenkxaso enamandla, ukuqinisekisa ukuba ivalvu ivuleka kwaye ivale kakuhle, ilungelelanise ngokufanelekileyo ukuhamba kwamanzi.

Ivalvu yesango le-DN150 copper rising stem gate ethunyelwe ngempumelelo yiJinbin factory ayisiyomveliso yemveliso kuphela, kodwa ikwazisa ezi nzuzo zibalaseleyo zokusebenza kwentonga yobhedu kwisicelo seprojekthi, ikhuthaza ngakumbi ukufuna kweshishini iimveliso zevalvu yesango ezikumgangatho ophezulu. Kukholelwa ukuba eli qela levalvu yesango liya kuxhomekeka kwiingenelo zeentonga zobhedu ukuze zisebenze ngokufanelekileyo kwiindawo ezahlukeneyo kwaye zincede uphuhliso lweshishini luye kwinqanaba elitsha.