Justrite Tip-Over Protection System has all the features of justrite's 08207 safety funnel, with the addition of a self closing ball valve and vent adapter. The integral self closing ball valve threads into a 2" drum bung and minimizes vapor emissions as well as preventing spillage if the drum is accidentally tipped over. This makes it ideal for earthquake-prone areas. The system includes a separate brass vent adapter which fits into the 2" drum bung to provide pressure and vacuum relief for protection against drum rupture or explosion.