Ukuvuleka okubanzi kokugcwalisa nokuhlanza:Ngokungafani namabhodlela amaningi okuhamba, leli livuleke kakhulu lenza kube lula ukugcwalisa uketshezi olujiyile, futhi lilingana kalula nebhulashi ukuze lihlanze ingaphakathi leshubhu.
I-valve engaconsi:Isivalo sebhodlela sine-valve engadonsiyo evimbela ukuvuza futhi iqinisekisa ukuthi ukhipha inani elifanele njalo.