Iivalvu zizixhobo zemibhobho ezisetyenziselwa ukuvula nokuvala imibhobho, ukulawula ukuhamba, ukulungelelanisa nokulawula iiparamitha (ubushushu, uxinzelelo, kunye nokuhamba) kwendlela yokuhambisa. Ngokomsebenzi wayo, inokwahlulwa ibe yi-valve yokuvala, i-valve yokukhangela, i-valve yokulawula, njalo njalo. Ivalve i...
Funda ngokugqithisileyo