Iivalvu zeenaliti zibonelela ngolawulo lokuhamba oluthembekileyo kuluhlu lwezicelo ezisebenzisa iindlela ezahlukeneyo zoyilo lwesiqu, iipateni zokuhamba, izixhobo, kunye noqhagamshelo lwesiphelo kuyilo olufana ne-integral-bonnet kunye ne-union-bonnet.Iivalvu zokulinganisa iimitha zibonelela ngesakhono sokwenza uhlengahlengiso olululo ukuze kulawuleke ngokuchanekileyo ukuhamba kwenkqubo kwi-low- or high- pressure, kunye ne-low-, medium-, okanye high-flow applications.