Umbhobho wokufefa oguquguqukayo onezifakelo:Ithumbu lentsimbi elibhetyebhetye eliphela entlokweni yesitshizi kwinkqubo yokutshiza.Umzimba oyintloko wenziwe ngensimbi engenasici, kuquka i-hose yensimbi engenasici (okt i-bellows) kunye namacandelo okufakela.