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18
Deflation (Dump Valve)
Your BC comes equipped with a dump valve / over pressure relief valve (OPRV)
(Fig. 23g). The primary function is to relieve excess air pressure inside the bladder.
If the internal pressure exceeds the spring pressure, the OPRV automatically
opens to release air, preventing damage to the BC. The dump valve can also be
opened manually by pulling on the pull knob and cord assembly to quickly dump
air from the BC. To close the dump valve, release the knob and cord assembly.
G
CAUTION:
is vital to prevent damage to the BC bladder. Unauthorized service
or tampering may render this valve inoperable and could cause the
bladder to leak or burst. This type of damage is not repairable and is
not covered under warranty.
WARNING:
in an upright, feet-first position, in order to maintain a slower and more
controlled descent. This is especially true if you experience difficulty
equalizing your ears or if you are descending in low visibility conditions.
The proper function of the over pressure relief valve (OPRV)
Most training agencies recommend that you should descend
Fig. 23
F
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