Ukuba unolwazi olusisiseko lwevalvu, mhlawumbi uqhelene naloivalvu yebhola– yenye yezona ntlobo zixhaphakileyo zeevalvu ezikhoyo namhlanje. Ivalvu yebhola idla ngokuba yivalvu ejika ikota enebhola eneembobo embindini ukulawula ukuhamba. Ezi valve zaziwa ngokuqina kunye nokuvala kakuhle, kodwa azisoloko zibonelela ngolawulo oluchanekileyo. Masithethe ngexesha elifanelekileyo lokusebenzisa ivalvu yebhola njengevalvu yokulawula..
Nangona iivalvu zebhola zingesiso isixhobo esifanelekileyo sokulawula ukuhamba kwamanzi, zisasetyenziswa kakhulu ngenxa yokuba zibiza kancinci. Ungaphumelela ekusebenziseni ivalvu yebhola kwisicelo esingadingi ukulungiswa nolawulo oluchanekileyo. Umzekelo, ivalvu yebhola akufanele ibe nangxaki yokugcina itanki enkulu igcwele kwinqanaba elithile ngaphakathi kweesentimitha ezimbalwa.
Njengakwezinye izixhobo, kuya kufuneka uqwalasele iimeko zenkqubo epheleleyo ngaphambi kokuba ukhethe ivalvu yakho. Oku kuquka imveliso okanye izinto ezisetyenzisiweyo, ubungakanani bombhobho, isantya sokuhamba kwamanzi, njl. Ukuba uzama ukulawula izinto ezibizayo oxhalabileyo ngokuzichitha, usenokungafuni ukuthembela kwivalvu yebhola.
Iivalvu zebhola azichanekanga kakhulu kuba ukulungiswa kwazo akuhambelananga nomthamo omkhulu wokuhamba kwamanzi obonelelwa ngumngxuma ovulekileyo. Kukwakho 'ukutyibilika' okanye 'ukudlala' phakathi kwesiqu kunye nebhola okuthintela ulawulo oluchanekileyo. Okokugqibela, ubungakanani be-torque efunekayo ukulungisa iivalvu zebhola abuvumeli ukulungiswa okuncinci kufutshane nendawo "evaliweyo" kunye "nevulekileyo".
Ixesha lokuthumela: Agasti-31-2021
