I-valve ixhunywe ngama-clamps amabili, futhi isakhiwo siqinile.Ngenxa ye-stroke yokuvala okufushane kanye nokulayisha okuphuzi kwentwasahlobo, isivinini sokuvala siyashesha, esinganciphisa kakhulu into yesando samanzi.I-valve inezici zevolumu encane, isisindo esincane, isenzo esibucayi, ukubekwa uphawu okuthembekile, ukufakwa okulula, njll. Ingafakwa ngokuvundlile noma ngokuqondile.