Patent ID: 8261763

Claim:
A tank valve unit comprising: a support body that is housed inside a fuel tank, and includes a mounting plate having a support engaged portion; a fuel cutoff valve that is secured to the support body, and has (i) a casing including a casing body and a bottom cover installed in a bottom part of the casing body, wherein the casing body and the bottom cover define a valve chamber; (ii) a float mechanism adapted to rise and fall depending on a fuel level in the valve chamber, and (iii) a spring adapted to upwardly urge the float mechanism, wherein the bottom cover has (i) a bottom cover body of circular disk shape; (ii) a communication hole formed in the bottom cover body and connecting the fuel tank interior with the valve chamber; (iii) a spring support portion formed on an upper face of the bottom cover body and adapted to support the spring; (iv) a first engaging portion adapted to attach the bottom cover to the casing body through engagement with a valve engaged portion of the casing body; and (v) a second engaging portion adapted to secure the bottom cover to the mounting plate through engagement with the support engaged portion, and the second engaging portion is a readily flexed claw shape that is projected downward from the bottom cover; and the support engaged portion is a hole that is formed in the mounting plate and adapted to flex and engage the claw.