Assertion: vent valve | /r/HasAspect | two portions
Facets:
Source sentences:
text: The present invention relates to vent valves capable of being welded to polymeric automotive fuel tanks, more specifically to a weldable vapor vent valve having two portions, one of which is weldable to the fuel tank, the other of which is heat- and vapor-resistant, and means for providing a secure connection and seal between the two portions of dissimilar materials.