Iindlela ezintathu ezininzi zenziwe ngumzimba we-stopcock (owenziwe yi-PC), i-valve engundoqo (eyenziwe yi-PE), i-Rotator (eyenziwe yi-PE), i-cap yokukhusela (eyenziwe ngu-ABS), i-Screw cap (eyenziwe yi-PE), indlela enye isinxibelelanisi (eyenziwe yiPC + ABS).