valuvormi ventileerimine, ventilatsioon, ventileerimine
spetsiaalsete avade süsteem metalli tardumisprotsessis eralduvate gaaside väljutamiseks valuvormist (vrd liivvormi ventilatsioon), special features which allow the escaping of gases from the molten metal during solidification; for the venting a vent is provided in the casting system through which gases escape out (see: mold venting)
