riser, feeder, feeding head, feeder head, feedhead, shrink head, shrinkhead
valukanalite süsteemi osa valandi toitmiseks sulametalliga tardumise ajal vältimaks kahanemistühikute tekkimist (vrd valuplokivalupea), a reservoir of molten metal connected to a casting to provide additional metal to the casting, required as the result of shrinkage before and during solidification (compare: sinkhead)
