Assertion: valve's seat | /r/CapableOf | seal the process medium
Facets:
value: independently
type: MANNER
value: at the same time
type: TEMPORAL
Source sentences:
text: When the valve is in a fully closed or fully open position, each seat seals off the process medium independently at the same time between the up/downstream and body cavity; it allows bleeding of the cavity pressure through a drain or vent valve.