Patent ID: 8176935

Claim:
A fuel vapor control valve comprising: a housing fitted with an inlet port connectable to a fuel tank and an outlet port connectable to a fuel vapor recovery device, the inlet port and the outlet port being in flow communication via a first valve controlled passage defined by a wall portion of an outlet chamber associated with the outlet port, the first valve controlled passage admitting fuel vapor flow in a direction from the inlet port to the outlet port only when pressure within the fuel tank exceeds a threshold; and a second valve controlled passage for admitting vapor flow in an opposite direction from the outlet port to the inlet port only when pressure within the fuel tank drops below pressure at the fuel vapor recovery device, wherein the second valve controlled passage is in the form of a first aperture defined in the wall portion of the outlet chamber, the first aperture extending between the outlet chamber and an inlet chamber associated with the inlet port, the second valve controlled passage is provided with a sealing member extending within the inlet chamber and being deformable or displaceable so as to disengage from sealing engagement with the first aperture in the event of vacuum within the inlet chamber, wherein the sealing member is received between the wall portion of the outlet chamber and a shielding member disposed in the inlet chamber, the shielding member is in the form of a pocket surrounding the sealing member and comprises a ring portion for secure mounting over the wall portion and a shielding portion extending opposite the first aperture, the wall portion of the outlet chamber and the protective shield shielding member retaining the sealing member, wherein the shielding member is formed with a second aperture to allow fluid flow from the first aperture towards the inlet chamber.