Assertion: diver's regulator | /r/CapableOf | maintain pressure
Facets:
value: inside helmet
type: LOCATION
value: inside mask
type: LOCATION
value: inside the mouthpiece
type: LOCATION
Source sentences:
text: This cracking pressure difference is usually negative relative to ambient, but may be slightly positive on a positive pressure regulator (a regulator that maintains a pressure inside the mouthpiece, mask or helmet, which is slightly greater than the ambient pressure).