Assertion: globe valve | /r/HasAspect | a rubber washer
Facets:
value: often
type: TEMPORAL
value: for the seating surface
type: PURPOSE
value: at the bottom of the disc
type: LOCATION
Source sentences:
text: Economical globe valves or stop valves with a similar mechanism used in plumbing often have a rubber washer at the bottom of the disc for the seating surface, so that rubber can be compressed against the seat to form a leak-tight seal when shut.