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14
Deflation Using the Rapid Exhaust Valve (REV)
Inside the inflators spiral hose is a braided spectra cord that attaches the inflator to the dual valve at the
top of the airway assembly. You can vent air from the BC by firmly pulling straight down on the lower
inflator assembly (DO NOT use excessive force). The Rapid Exhaust Valve (REV) provides an effective
and convenient way to vent air (Fig. 9) from the BC while in either an upright or face down swimming
position. It also functions as an over pressure relief valve (OPRV) that will open automatically to relieve
excess air pressure (Fig. 10). This feature is very critical for preventing stress or damage to the bladder.
Fig. 9
Deflation Using the Over Pressure Relief Valve (OPRV)
/ Dump Valve (Fig. 11)
In addition to the rapid exhaust valve (REV) that
is integrated into the dual valve, the BC has an-
other OPRV/dump valve located on the lower right
lobe (A), opposite the cylinder valve connector.
The primary function of the OPRV is to relieve excess air
pressure inside the bladder, but it can also be opened
manually by pulling on the knob and cord (B) to quickly
dump air.
CAUTION: The proper function of the over pressure relief valve (OPRV) is vital to prevent damage to the
bladder. Unauthorized service or tampering may render these valves inoperable, and could cause the
bladder to leak or burst. This type of damage is not repairable and is not covered under warranty.
WARNING: Most training agencies recommend that you descend 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.
Odyssea (Export) Technical Manual
Fig. 10
A
Fig. 11
B
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