Lo mzimba wevalvu wenziwe ngentsimbi yekhabhoni eqiniweyo kwaye usebenza njengecandelo eliphambili kwiindibano zeevalvu zebhola zemizi-mveliso. Yenzelwe ukumelana neemeko zokusebenza ezinzima ezifana noxinzelelo oluphezulu, ukujikeleza rhoqo, kunye namaqondo obushushu atshintshatshintshayo. Le nxalenye yenziwe ngomatshini ngokupheleleyo ukuze ikwazi ukumelana nobunzima, iqinisekisa ukutywinwa okuthembekileyo, ukulungelelaniswa kwebhore, kunye nejometri yeflange engaguqukiyo. Ukuba kuyimfuneko, umzimba ungenziwa ngentsimbi engagqwaliyo (304, 316, okanye 316L) ukuze isetyenziswe kwiindawo ezirhabaxa okanye ezicocekileyo.