Enviro-Safe R-290 3 can kit with gauge Part#: 8006 Pack of 3 Also comes with one of our best selling gauge kit! EPA approved refrigerant For use in food refrigerators and freezers R-290 is EPA approved for use, subject to certain conditions, only in new retail refrigerators and freezers (stand-alone units) as set forth in the federal regulations at 40 CFR Part 82. Also available by the case of 12 Flammable to open flame or spark. .