Apeks WTX Owner's Manual page 37

Table of Contents
Some of the buoyancy cells offer an alternate location
where an optional dump valve may be added. This
alternate location comes capped from the factory. A
universal OPR/dump valve kit may be ordered from
your dealer (p/n 42754). Instructions for installation
are included in the kit.
To dump air as quickly as possible, always use
the dump valve at the highest point in the water
column. For example, the lower valve works best
while making a head-first descent, or swimming in
a face-down position.
CAUTION: The proper function of the overpressure relief valve 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:
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.
Most training agencies recommend that you should descend in an
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