Abstract: The invention concerns a dual float rollover valve for use in a vehicle fuel tank assembly. The rollover valve may include a housing having an upper portion with a top end defining a vapor passage and an opposed bottom end, and an outer wall extending between the top and bottom ends and defining a channel extending therethrough; and a lower portion having a first end engaging with the bottom end of the upper portion, an opposed second end including a vent hole therethrough, and an outer wall extending between the first end and the second end and defining a chamber therein. An inner seal may be mounted between the channel and the chamber and include a seal bore extending from the channel to the chamber, with an upper float mounted in the channel, and a lower float, mounted in the chamber, having a buoyancy relative to fuel such that it is adapted to float on the fuel and selectively seal against the seal bore.

Abstract: The invention concerns a dual float rollover valve for use in a vehicle fuel tank assembly. The rollover valve may include a housing having an upper portion with a top end defining a vapor passage and an opposed bottom end, and an outer wall extending between the top and bottom ends and defining a channel extending therethrough; and a lower portion having a first end engaging with the bottom end of the upper portion, an opposed second end including a vent hole therethrough, and an outer wall extending between the first end and the second end and defining a chamber therein. An inner seal may be mounted between the channel and the chamber and include a seal bore extending from the channel to the chamber, with an upper float mounted in the channel, and a lower float, mounted in the chamber, having a buoyancy relative to fuel such that it is adapted to float on the fuel and selectively seal against the seal bore.