Valves for connecting fuel supplies to a device are disclosed. The fuel
supplies can be a pressurized or non-pressurized cartridge that can be
used with any device, such as fuel cells or fuel refilling apparatus. The
valve includes face seals to minimize the amount of fuel remaining in the
valve when the fuel supply is separated from the device. In one
embodiment, the valve includes deformable members including sealing
surfaces, where the flow paths through the valve are sealed and unsealed
by the deformation of the deformable members. In another embodiment, the
female valve component includes a shortened body to limit the volume of
fuel remaining in the valve. The female valve component also includes a
cap with slots formed therein so that residual fuel can drain from the
valve component into a fuel reservoir.