Iivalve zokuvala i-SVA ziyafumaneka kwi-angleway kunye neenguqulelo ezikhawulezayo kunye ne-Standard neck (SVA-S) kunye nentamo ende (SVA-L).
Iivalvu ezivaliweyo ziyilelwe ukuhlangabezana nazo zonke iimfuno zesicelo sefriji yefriji kwaye ziyilelwe ukunika iimpawu zokuhamba ezifanelekileyo kwaye kulula ukuziqhaqha kunye nokulungiswa xa kuyimfuneko.
I-valve cone yenzelwe ukuqinisekisa ukuvala ngokugqibeleleyo kunye nokumelana ne-pulsation ephezulu yenkqubo kunye nokunyakaza, okunokuthi kube khona ngokukodwa kumgca wokukhupha.