Assertion: diver | /r/CapableOf | provide larger pressure differential
Facets:
value: over the orifice
type: OTHER
Source sentences:
text: Less common in the 1950s to 1970s was an R-valve which was equipped with a restriction that caused breathing to become difficult as the cylinder neared exhaustion, but that would allow less restricted breathing if the diver began to ascend and the ambient water pressure lessened, providing a larger pressure differential over the orifice.