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Dive Adventures Scuba Glossary is for scuba divers and anyone else interested in scuba diving terminology. To find the scuba glossary term that you are looking for click on the letters below to display the scuba glossary terms that begin with that letter. If you feel that we have missed a term from our scuba glossary or would like a term added to our scuba glossary please contact us so that we can add that term to our scuba glossary. Dive Adventures thanks you for visiting our scuba glossary and helping us to make it better for other scuba divers and those interested in scuba diving terminology Optionally you may select "All Terms" to display the entire list of terms from our scuba glossary database.
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V
Valsalva Maneuver
A method of manually equalizing the inner ear. The pressure on the inside of the eardrum is increased by closing the nasal passage (pinching the nose shut) and blowing gently, forcing air into the inner ear via the Eustachian tube.
Valve cage
structure or frame fitted to scuba cylinder to protect the cylinder valve or manifold and regulator first stage from impact damage and roll-off.
Valve drill
Safety exercise in which the diver shuts down, tests regulators and re-opens the manifold valves on a twin set in a specific order.
Valve guard
A protective structure or frame fitted to the top of a bulk storage cylinder to protect the cylinder valve from mechanical damage.
Van der Waals equation
Thermodynamic equation of state for a real (non-ideal) gas.
Vasoconstriction
The constriction of the blood vessels in order to reduce heat loss from the blood through the skin.
Vasodilation
The widening of blood vessels resulting from relaxation of smooth muscle cells within the vessel walls, particularly in the large veins, large arteries, and smaller arterioles.
Venomous
Having a gland or glands for secreting venom; able to inflict a poisoned bite, sting or wound.
Vertigo
A sign of ear barotraumas and should not be ignored. Causes may range from minor ear squeeze to perforation of the eardrum to inner ear barotraumas.
Viewport
1. Glass or plastic window on a diving helmet or full face mask. 2. Window on a hyperbaric chamber.
VIP
Visual Inspection Program. Standardized visual tank inspection performed by a trained equipment technician, performed annually.
Visibility
The distance a diver can see underwater measured in feet. Normally vertically not up and down.
Visual gap
Gap between guidelines which is small enough that each line can be seen from the other.
Visual inspection
Internal and external inspection of a pressure vessel as part of revalidation procedure.
Visual jump
The procedure of crossing a visual gap (q.v.) without the use of a jump line.
Viton
Synthetic elastomer suitable for oxygen service O-rings.

There are 16 scuba glossary terms listed.

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Modified 12/04/2014