Assertion: diver's buoyancy compensator | /r/HasProperty | operated
Facets:
value: by adjusting the volume of gas
type: MANNER
Source sentences:
text: The buoyancy compensator is operated by adjusting the volume of gas contained in the bladder, using an inflation valve to inject gas and one or more deflation valves, or dump valves to release gas, which is usually supplied directly from a breathing gas cylinder, or orally, as exhaled gas, though dedicated gas cylinders can be used.