E sebelisoa haholo bakeng sa ho lelefatsa li-tube tse hlokahalang, ho kenya mefuta e mengata ea meriana ka nako e le 'ngoe le ho tšeloa ka potlako.E entsoe ka li-valve tsa litsela tse tharo bakeng sa tšebeliso ea bongaka, litsela tse peli, tse peli, tse tharo, li-clamp, tsamaiso ea phallo, bonolo. tube, karolo ea ente, sehokelo se thata, sebaka sa nale(ho latela bareki'tlhoko).