fuel vapor from escaping into the atmosphere however the fresh air valve 32 typically remains open until routine or diagnostic steps are performed on the automotive vehicle as shown in fig2 the canister 14 includes a housing having a side portion 36 a top portion 38 and a bottom portion 40 the canister 14 further includes a liquid fuel trap 48 and an adsorbent chamber 46 the fuel vapor entering the canister 14 is passed into the adsorbent chamber 46 which contains an adsorbent material 42 while the liquid fuel accompanying the fuel vapor is drawn by gravity to the fuel trap 48 above the chamber 46 at the liquid fuel trap 48 a seal is maintained between the fuel trap 48 and the adsorbent chamber 46 by creating a torturous path for the liquid molecules via a groove 50 inside the canister 14 into which the fuel trap 48 is pressed the liquid fuel entrained with the fuel vapor from the fuel tank 12 is separated from the fuel vapor by gravity wherein the fuel vapor is directed to the adsorbent material 42 and the liquid fuel is directed to the fuel trap 48 where the liquid remains until it evaporates the vapor from the liquid fuel trap 48 is directed into the bed of adsorbent material 42 in chamber 46 where it becomes adsorbed on the adsorbent material 42 the fuel tank vapor load line 16 is connected to canister 14 via port 19 engine purge line.