Assertion: diver's air | /r/CapableOf | take same time
Facets:
value: by using a back pressure valve
type: MANNER
value: always
type: TEMPORAL
value: to pass through filtration
type: PURPOSE
value: to pass through the filter
type: PURPOSE
value: approximately
type: TEMPORAL
Source sentences:
text: By using a back pressure valve the air always takes approximately the same time to pass through the filter and filtration is consistent (assuming a consistent operating speed).