Patent ID: 7568499

Claim:
A fuel check valve that is attachable to a fuel tank, comprising: a pipe having a tip end portion formed as a fuel outflow port, and a basal end portion that communicates with a fuel supply pipe; a valve element attached in an openable and closable manner to the fuel outflow port of the pipe, the valve element being normally urged by a spring in a closing direction; a support shaft disposed on one of the pipe and the valve element, a basal end portion of the support shaft being fixed to the one of the pipe and the valve element and a tip end portion of the support shaft being free relative to the one of the pipe and the valve element, the support shaft functioning as a swing fulcrum for the valve element; and a bearing portion disposed on another one of the pipe and the valve element, the bearing portion swingably supporting the support shaft, the bearing portion comprising: a receiving hole into which the tip end portion of the support shaft is inserted; and an engaging groove with which the basal end portion side of the support shaft is engaged, wherein the support shaft includes an increased-diameter portion adjacent the tip end portion, a diameter of the increased-diameter portion is larger than an inner diameter of the receiving hole, and a coil portion of the spring is attached to the increased-diameter portion.