Fuel vapor vent valve

A fuel vapor vent valve comprising

• a plastic body including a base wall and a peripheral wall,
• a plastic cap including a base wall and a peripheral wall surrounding the peripheral wall of the plastic body,
• axially aligned openings in said base wall of said body and said caps,
• said peripheral wall of said body having a radially outwardly extending annular rib,
• said peripheral wall of said cap having a radially inwardly extending rib,
• said ribs being adapted to pass over one another to provide a snap fit during assembly,
• said base wall of said body having integral O-ring retaining means,
• an O-ring retained by said integral means,
• a bi-metallic disc positioned in said body within the confines of said peripheral wall of said body and normally engaging said O-ring,
• spring means extending from the base wall of said cap and bearing against said bi-metallic disc,
• a recess integral in the base wall of said cap for receiving one end of said spring,
• integral stop means on said cap adapted to be engaged by said bi-metal disc when said disc is caused to move to a position out of engagement with said O-ring upon increase of the ambient temperature,
• said stop means comprising a plurality of radially extending webs in said cap,
• an integral axial projection on said base wall of said body engaged by said bi-metallic element,
• said peripheral wall of said body and said peripheral wall of said cap being ultrasonically welded to one another,
• said peripheral wall of said body engaging the base wall of said cap.