Fuel cut-off valve

A fuel cut-off valve comprising:

• a case having (i) a first opening communicated with an inside of a fuel tank, (ii) a second opening communicated with a canister, and (iii) a guide member;
• a lower float that is provided so as to move up and down inside the case and has a first valve member above the lower float;
• an upper float that is provided so as to move up and down above an upper portion of the lower float and has a second valve member and a third opening communicated with the canister, the upper float having a cylindrical body that surrounds the third opening and extends upward;
• a first valve seat provided on the upper float, against which the first valve member abuts to close off the third opening;
• a second valve seat against which the second valve member abuts to close off the second opening,
• wherein:
• the guide member has an inner peripheral edge that faces an outer periphery of the cylindrical body,
• the guide member guides the upper float when the upper float moves up and down, and
• the inner peripheral edge is located at an inside of the second valve seat in a radial direction.