Assertion: diver | /r/CapableOf | clear the mask
Facets:
value: as a method
type: MANNER
Source sentences:
text: The automatic diluent valve (ADV) is used in a rebreather to add gas to the loop to compensate automatically for volume reduction due to pressure increase with greater depth or to make up gas lost from the system by the diver exhaling through the nose while clearing the mask or as a method of flushing the loop.