Patent ID: 6779545
Filing Date: 2004-08-24
Classification: F16K,Y10T

Abstract:
A pressure control valve, comprising:a valve chamber having a first communicating portion to communicate with a canister and a second communicating portion to communicate with a fuel tank, a first valve member having a hollow body and disposed inside the valve chamber to be movable between a lower position and an upper position, said first valve member including a first valve portion at a bottom thereof for closing the second communicating portion from an inside of the valve chamber at the lower position, a first communicating hole passing through the first valve portion, and a second communicating hole formed at an upper portion thereof for communication between the first valve member and the valve chamber, and a second valve member disposed inside the first valve member to be movable between a lower position and an upper position, said second valve member having a second valve portion for closing the second communicating hole from an inside of the first valve member at the upper position thereof, and means for providing a space to the second valve member so that when the second valve member is located at the lower position above the first communicating hole, an inside of the first valve member communicates with the first communicating hole.