Title 46
SECTION 197.342
197.342 Buoyancy-changing devices.
§ 197.342 Buoyancy-changing devices.(a) A dry suit or other buoyancy-changing device not directly connected to the exhaust valve of the helmet or mask must have an independent exhaust valve.
(b) When used for SCUBA diving, a buoyancy-changing device must have an inflation source separate from the breathing gas supply.