Fill & Vapor Caps Top Seal Fill Cap Designed with a lockable cap for use on conventional A0030 or coaxial A0089 and A0096 adapters Low Profile Fill Cap Designed for use when there is limited space between the top of the adapter and the spill containment lid Vapor Adapter Cap Features a lockable cap and a cam system designed for Stage I vapor recovery dual point systems Low Profile Vapor Cap Designed for use when there is limited space between the top of the adapter and spill containment lid One Piece Tank Gauge Cap The lowest profile ATG cap option Low Profile Tank Gauge Cap Designed with a grommet to allow a cable to pass through the cap; for use with A0030-014 ATG adapter Tank Gauge Cap Designed with a grommet to allow a cable to pass through the cap; for use with A0030-014 ATG adapter Vapor Test Cap Designed for use when performing pressure decay tests. Pressure escapes through the Schrader valve