Abstract: One embodiment is related to a valve apparatus to be mounted on a fuel tank. The valve apparatus including: a housing including a ventilation chamber on a bottom face of which a first opening and a second opening are provided, and a valve chamber communicating with the first opening and disposed below the ventilation chamber, and a float valve disposed in the valve chamber. The housing includes a canister-connecting pipe communicating with the second opening. A standing wall is disposed on the bottom face of the ventilation chamber between a peripheral edge portion of the first opening and a peripheral edge portion of the second opening. And, an overhang wall portion extends from a side face of the standing wall toward the first opening, as viewed from above.

Abstract: One embodiment provides a valve device for fuel tank. The valve device includes: a housing in which a valve chamber and a ventilation chamber are divided by a partition wall having a first and second openings; a vapor discharge outlet communicating with the ventilation chamber; first and second float valves vertically movably housed in the valve chamber to close the first and second openings, respectively; and a recess portion defined in a part of the ventilation chamber correspondingly with the first opening. A passage is provided to communicate the discharge outlet with the recess portion. And, a first wall portion is provided around an end of the passage on a side of the recess portion so as to block the fuel that flows out of the second opening into the first opening from heading to the third opening.

Abstract: A cap attaching structure includes a cylindrical member and a cap member. The cylindrical member has an end plate, a side wall to be inserted into the cylindrical member, and an engagement claw piece in which a proximal end portion is connected to an inserting side end portion of the side wall, while a distal end portion extends towards the end plate via a slit. On an outer circumference of the engagement claw piece, a claw portion adapted to be brought into engagement with an engagement hole of the cylindrical member is provided. The distal end portion of the engagement claw piece is disposed in a cutout portion in the end plate.

Abstract: A valve unit includes a housing which has a partition wall in which an opening portion is formed, a float valve which is disposed within a valve chamber R1 thereof, and a check valve which is disposed within a valve chamber R2. A valve seat is provided on a lower surface side of the partition wall, and plural radially-extending thin ribs are formed therearound. Plural axially-extending check valve guide ribs are provided at predetermined circumferential intervals with in the vent chamber R2, and plural axially-extending float valve guide ribs are provided at predetermined circumferential intervals within the valve chamber R1. The thin ribs and the check valve guide ribs are formed circumferentially alternately so as not to be superposed on each other when viewed from an axial direction of the housing.

Abstract: A cap attaching structure includes a cylindrical member and a cap member. The cylindrical member has an end plate, a side wall to be inserted into the cylindrical member, and an engagement claw piece in which a proximal end portion is connected to an inserting side end portion of the side wall, while a distal end portion extends towards the end plate via a slit. On an outer circumference of the engagement claw piece, a claw portion adapted to be brought into engagement with an engagement hole of the cylindrical member is provided. The distal end portion of the engagement claw piece is disposed in a cutout portion in the end plate.