Alternate air source

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A pair of demand valves
A pair of demand valves

An alternate air source is a secondary supply of air used by scuba divers in case of an emergency. Examples include an auxiliary demand valve or a pony bottle.

[edit] See also

[edit] References

  • Busuttili, Mike; Trevor Davies, Peter Edmead et al (1959). Sport Diving. BSAC, 72,130. ISBN 0091864291. 
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