Assertion: diver | /r/CapableOf | close valve
Facets:
value: to refill the counter-lung
type: PURPOSE
value: to a failed regulator
type: TRANSITIVE-OBJECT
value: to the oxygen cylinder
type: TRANSITIVE-OBJECT
value: in most failure situations
type: TEMPORAL
Source sentences:
text: The advantages of this configuration include: a larger gas supply than from a single cylinder; automatic balancing of the gas supply between the two cylinders; thus, no requirement to constantly change regulators underwater during the dive; and in most failure situations, the diver may close a valve to a failed regulator or isolate a cylinder and may retain access to all the remaining gas in both the tanks.
text: In some early oxygen rebreathers the diver had to manually open and close the valve to the oxygen cylinder to refill the counter-lung each time the volume got low.