Valve device for fuel tank and overfilling preventing device for fuel tank

摘要

A valve device used by being attached to a fuel tank includes a case provided with an airflow valve opening which communicates with the outside of the tank, on an upper portion, and also provided with a fuel inflow section located on a lower side of the airflow valve opening, and a float body housed in the case so as to be vertically movable, and also seated in the airflow valve opening by being elevated by the fuel flowed into the case through the inflow section. In the case, an airflow section which interconnects the inside of the tank and the inside of the case is formed in a higher side than a waterline of the float body at the seating time, and also at the seating time, this airflow section is restricted.

主权项

1. A valve device for a fuel tank attached to the fuel tank, comprising:
a case having an airflow valve opening which communicates with an outside of the tank, on an upper portion, and a fuel inflow section located on a lower side of the airflow valve opening; and a float body housed in the case so as to be vertically movable, and seated in said airflow valve opening by being elevated by fuel flowing into the case through said inflow section when the fuel in the tank reaches the fuel inflow section, wherein the case includes an airflow section which interconnects an inside of the tank and an inside of the case at a higher side than a waterline of the float body at a seating time of the float body to the airflow valve opening, and at said seating time, the airflow section is restricted.