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.

I-valve icandelo lokulawula kwinkqubo yokuhambisa umbane, enemisebenzi yokunqunyulwa, ukulawulwa, ukuguqulwa, ukuthintela ukubuyisela umva, ukuzinzisa, ukuphambuka okanye ukugqithisa, kunye nokunciphisa uxinzelelo. Iivalvu ezisetyenziswa kwiinkqubo zokulawula ulwelo, ukusuka kwezona zivalo zilula zokuvala ukuya kwiivalvu ezintsonkothileyo ezisetyenziswa kwiinkqubo zolawulo oluzenzekelayo, zineentlobo ngeentlobo kunye neenkcukacha.

Iivalvu zinokusetyenziselwa ukulawula ukuhamba kweentlobo ezahlukeneyo zolwelo olunjengomoya, amanzi, umphunga, imithombo yeendaba eyonakalisayo, udaka, ioyile, isinyithi solwelo, kunye nemithombo yeendaba erediyo. Iivalvu zikwahlulahlulwe ngokwentsimbi yentsimbi, iivalvu zentsimbi, iivalve zentsimbi, ichromium-molybdenum steel valves, chromium-molybdenum vanadium steel valves, iivalve zentsimbi ezimbini, iivalvu zeplastiki, iivalve ezingezizo eziqhelekileyo, njl njl ngokwezinto zabo.