| 摘要 |
A fuel return block has a body with a coaxial inlet and outlet generally perpendicular to the body, a return port communicating with an inlet, and a vent generally parallel to the inlet and the outlet while communicating with the return port. The inlet and the outlet have external threading for connection to a fuel tank and to a fuel line. A common space between the inlet, the outlet, the return port, and the vent has a particular geometry conducive to ventilation of the fuel return block but not allowing escape of fuel through the vent. The inlet secures to a manufacturer's fitting upon the fuel tank so no second opening is required. The fuel return block equalizes pressures of the inlet, the outlet, and the return port preventing tank damage and interruptions to fuel delivery from negative pressure.
|
