Koporosephaphathali-valve tsa serurubele, tseo hangata li sebelisoang indastering ea metsing, li thibela kutu, hangata ke 'mele oa borone oa aluminium, poleiti ea aluminium ea boronse.ZFAvalve e na le phihlelo ea valve ea sekepe, ho Singapore, Malaysia le linaheng tse ling li fane ka valve ea sekepe.