These tanks are intended to whip product using a whipped cream dispenser and regulator attachment. Every single tank comes along with a plastic valve to control release of gas and not using a regulator attachment. Tanks should be entirely vacant previous to disposal. Product Functions: SupremeMax one.1L 680g Cream Charger https://trevorjtclu.blgwiki.com/1375194/little_known_facts_about_nang_tanks