Iivalvu ezahlukeneyo ezikwi "Christmas tree" zenza iziko lolawulo lokhuseleko lwequla leoyile. Zisebenza ngokubambisana ngokwemisebenzi efana nolawulo oluphambili, imveliso yemihla ngemihla kunye nokugcinwa kwengxakeko.
Iivalvu zoLawulo oluPhambili (uKhuseleko oluPhambili)
Ngokwesiqhelo ivalvu yesango eqhutywa ngamanzi-manzi efumaneka phezulu. Umsebenzi wayo kukuvala ngokukhawuleza xa kukho imeko engxamisekileyo ukuze kunqunyulwe unxibelelwano phakathi kwentloko yomthombo kunye nenkqubo ephezulu, ukuthintela ingozi ukuba yande. Isebenza njengomqobo oyintloko wokhuseleko.
Ngokwesiqhelo ivalvu yesango elenziwa ngesandla efumaneka ngaphantsi kwevalvu ephambili ephezulu. Umsebenzi wayo kukusebenza njengomqobo wesibini wokhuseleko nokubonelela ngokwahlulwa xa ivalvu ephambili ephezulu ifuna ukulungiswa. Ayivuleki ngokupheleleyo ngexesha lemveliso eqhelekileyo.
Iivalvu zeMveliso (Ukusebenza kwemihla ngemihla)
Ngokwesiqhelo ivalvu eqhutywa nge-hydraulic ezenzekelayo eqhagamshelwe kumbhobho ophambili weoyile. Umsebenzi wayo kukuvala okanye ukulawula umjelo ophambili weoyile negesi ephuma equleni kwiimeko ezingxamisekileyo okanye ngexesha lemisebenzi yemihla ngemihla.
Ayilovalvu elula yokuvala, kodwa sisixhobo esibalulekileyo sokulawula ukuhamba kwamanzi. Ngokutshintsha ii-chokes zeedayamitha ezahlukeneyo zangaphakathi, izinga lokuveliswa komthombo kunye noxinzelelo lwentloko yomthombo linokulawulwa ngokuchanekileyo.
Iivalvu eziNcedisayo (Ukugcinwa kunye nokujova)
Ibekwe phezulu, isetyenziswa ngesandla. Ivulwa xa kufuneka intambo yocingo, intambo okanye eminye imisebenzi yokunciphisa umbane okanye umlinganiselo woxinzelelo, kwaye ivalwa ngamanye amaxesha.
Isetyenziswa ngesandla. Isetyenziselwa ukufaka ulwelo olubulala umngxuma, izinto ezithintela iikhemikhali (ezilwa nokugqwala, ezilwa nokuqandisa umkhenkce), kunye nezinye izinto ezibangela ulwelo emngxunyeni.
Ngexesha lemveliso eqhelekileyo, ivalvu ephezulu, ivalvu esezantsi kunye nevalvu yephiko lokuvelisa ziyavulwa, kwaye ioyile kunye negesi ziveliswa emva kokuba zilawulwa yi-choke. Ivalvu yokucoca i-wax kunye nevalvu yephiko elibulala kakuhle zihlala zivaliwe. Kwimeko yengxamiseko, inkqubo iya kuvala ngokuzenzekelayo ngokulandelelana: i-choke → ivalvu yephiko lokuvelisa → ivalvu ephezulu → ivalvu ephezulu. Olu landelelwano lunokwahlula umthombo weoyile ngokukhawuleza nangokukhuselekileyo.
Iivalvu ezingaphantsi kwamanzi "zomthi weKrismesi" ezisetyenziswa kwiindawo ezinzulu zolwandle zineemfuno ezingqongqo ngakumbi ukongeza kwimisebenzi engasentla:
Ixesha leposi: Feb-11-2026
