Lisebelisoa tsa kamehla tsa phepelo ea metsi li sebelisa phepelo ea metsi a pneumatic. E sebelisa tanka e koetsoeng 'me e sebelisa{1}khatello e phahameng ea khase le metsi ka har'a tanka ho fumana phepelo ea metsi. Tatelano e khethehileng ea ts'ebetso ke hore pompo ea metsi e sutumelletsa metsi ka tanka ka valve ea ho hlahloba, e hatella khase ka har'a tanka 'me butle-butle e eketsa khatello. Ha khatello e fihla moeling o ka holimo o boletsoeng, mochine oa khatello ea motlakase oa motlakase o emisa pompo ka boeona ka khabinete ea taolo. Khatello ea metsi ka har'a thepa e feta khatello ea marang-rang e ka ntle, 'me metsi a isoa ka mokhoa o ikemetseng ho marang-rang a phepelo ea metsi. Ha boemo ba metsi ka tanka bo theoha 'me khatello ea khase ka har'a tanka e fokotseha ho ea moeling o boletsoeng o tlase, tekanyo ea khatello ea motlakase e tsosolosa pompo ka khabinete ea taolo. Potoloho ena ea ipheta, ho netefatsa phepelo ea metsi e tsoelang pele. Haeba khase e ka tankeng e sa lekana, valve ea ho tlatsa moea e tla e tlatsa ka bo eona.
