Assertion: snorkel's valve | /r/CapableOf | close the opening
Facets:
value: reliably
type: DEGREE
Source sentences:
text: The valve guards the opening of the tube so that when the snorkel is submerged under water then the valve closes the opening.
text: 20100132701 SNORKEL - A snorkel is provided on an upper end section of a conduit with an opening for breathing and a valve adapted to open and to close the opening.
text: When any one of these two or more floats is given buoyancy and moves upward, the arms are reliably actuated upward and thereby the valve reliably closes the opening.