Ukulwa umlilo ukulwa umlilo ku-Den F4 fl fl fren kunye ne-valve yesango ye-WAS & Y Isango yi-valve esemgangathweni yenzelwe ukhuselo lomlilo. Le valve injineli ukuqinisekisa ukusebenza okuthembekileyo kunye nolawulo lokuhamba kwamanzi ngokufanelekileyo kwiimeko zongxamiseko.