Kule sizini itshintshayo, umzi-mveliso wethu ugqibezele umsebenzi wokuvelisa nge-odolo yomthengi emva kweentsuku ezininzi zokuvelisa ngononophelo nokuhlolwa ngononophelo. Ezi mveliso zeevalvu emva koko zathunyelwa kwindawo yokupakisha yomzi-mveliso, apho abasebenzi bokupakisha bathatha ngononophelo amanyathelo okukhusela ukungqubana kwevalvu nganye baza bagqiba ukupakisha ngokuchanekileyo iibhokisi ezimbini zeevalvu, ezaziza kuqala uhambo olutsha oluya kwindawo yazo yokugqibela.

Uluhlu olubanzi lweevalvu, kuquka neziboshwe ngesandlaiivalvu zebhabhathane, iivalvu zesango lamanzi, iivalvu zeglobe, iivalvu zebhola, iivalvu zebhabhathane ezine-flange yevili le-worm, iivalvu zokukhupha umoya ngokukhawuleza kunye neevalvu zokhuseleko, nganye yazo yindlela yokwenza ubugcisa befektri buqine. Azimeli nje kuphela amandla obuchwephesha efektri, kodwa zikwathwala nolindelo lwabathengi kwiimveliso ezisemgangathweni ophezulu.

Ngexesha lenkqubo yokupakisha, abasebenzi babonakalise umgangatho ophezulu wobungcali nokuzinikela. Bahlola ngononophelo ivalvu nganye ukuqinisekisa ukuba akukho ziphene, baze bayifake ngononophelo kwibhokisi ekhethekileyo yokupakisha. Ibhokisi nganye yenzelwe ngononophelo ukukhusela ivalvu kuyo nayiphi na ingozi ngexesha lokuhamba.

Ngevalvu yokugqibela yebhabhathane yamanzi ebekwe ngokuqinileyo ebhokisini, nto leyo ebonisa ukugqitywa ngempumelelo kwalo msebenzi wokupakisha. Oku akusiyo nje umsebenzi olula wokupakisha, kodwa kukwabonisa ngokucacileyo ukuzinikela komzi-mveliso kumgangatho wemveliso kunye nenkonzo yabathengi.

Ngoku, ezi bhokisi zimbini zeevalvu zilungele ukuhamba, ziza kuhamba kwiintaba ezininzi nemilambo, kwaye ekugqibeleni zifikelele ezandleni zabathengi. Sikholelwa ukuba ezi valve ziza kudlala indima ebalulekileyo kwiintsuku ezizayo, zibonelela ngesiqinisekiso esiqinileyo kwimisebenzi yemveliso yabathengi bethu.

Olu luhambo oluphumeleleyo kwaye lulucandelo olubalulekileyo kuphuhliso lwefektri. Silangazelela ukubona ezi valve zikhanya kwindawo entsha kwaye zidala ixabiso elingakumbi kubathengi bethu. Ukuba unesicelo, nceda unxibelelane nathi apha ngezantsi.