Patent ID: 7152586

Claim:
A fuel cut-off valve that is attached to an upper portion of a fuel tank and connects and disconnects inside with and from outside of the fuel tank according to a level of fuel in the fuel tank, said fuel cut-off valve comprising: a valve casing that forms a first valve chest and a second valve chest connected to the fuel tank and has an inter-valve chest flow passage connecting the first valve chest to the second valve chest and a canister flow path connecting the second valve chest to a canister placed outside the fuel tank; a first float that is located in the first valve chest and moves up and down according to the fuel level in the fuel tank to open and close the inter-valve chest flow passage, the first float moving up to close the inter-valve chest flow passage when the fuel level reaches a preset first level; and a second float that is located in the second valve chest and moves up and down according to the fuel level in the fuel tank to open and close the canister flow path, the second float moving up to close the canister flow path when the fuel level reaches a preset second level that is higher than the preset first level.