Assertion: bellow | /r/ObjectUse | used in piping system
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: Simple expansion joint is one of different types of bellows used in piping system mentioned in my previous post .
text: Expansion joints and bellows are used in piping systems.
text: But sometimes, the bellows are employed in a piping system in one of the following situations: