Assertion: valve's seat | /r/HasProperty | vented through opening
Facets:
Source sentences:
text: l, 2, and 4, excess pressure within the drum will cause the gasket assembly 16 Yto be biased upwardly against the pressure of the spring 19, permitting the volatile gases to escape through the Vopening between the gasket 15 and the seat 14 torbe vented through the openings provided for venting.