2. Ingxenye yokugcwalisa:
● Umshini wokugcwalisa ngemishini yokuphakamisa yohlobo lwentwasahlobo yokuthuthukisa amabhodlela engilazi, ukwesekwa okukhulu kwamabherethi okugoqeka ebhodweni kanye nokusetshenziswa kwenduku yokuqondisa ekuqondisweni kwesakhiwo, kunezici zangaphambi kokumboza.
● Ama-valve okugcwalisa amashubhu amade ayasetshenziswa, lapho i-CO2 ishintshana ngokugcwele nomoya ngaphakathi kwamabhodlela engilazi, kanye nezinga loketshezi lwesilinda kanye nengcindezi yangemuva elawulwa yisignali eguquguqukayo elinganayo. Ishesha, izinzile, inembile, ukuze ivalwe nge-vacuum eyodwa ngesikhathi.