Intego zose zifunga insinga nazo zitwa intego zose zifunga umugozi, ibikoresho bitandukanye nka valve handwheel hamwe na kabili ihindagurika ikikije icyuma gifata amashanyarazi, icyuma gikoresha amashanyarazi, icyuma gikoresha inzugi z'umuryango, nibindi, hanyuma ukizenguruka inyuma kugirango ufate ubwoko bwa kabili. umwobo wumubiri (gusa fata umugozi ushobora kunyura mumyobo ya kabili), kugeza umugozi uhambiriwe cyane kugirango ugabanye umugozi wumufunga, hanyuma umanike umutekano wumutekano hamwe na tagi.