GB
15
Regulator Owner’s Manual
............................................................................................
First Stage Environmental Protection
For diving in contaminated or cold water conditions, some Apeks first
stages feature a “DRY” environmental sealing system which completely
eliminates the need for messy silicone oil or grease filling. An external
diaphragm seals the ambient chamber from the surrounding sea water,
while a specially designed piston, transfers ambient water pressure to the
internal diaphragm.
This helps to prevent ice from forming inside the ambient chamber, and
also extends the life of the first stage internal diaphragm. It is important to
remember, however, that this environmental protection will not completely
prevent the second stage from icing or freezing.
Second Stage Cold Water Protection
With the exception of the XTX20, AT20 & T20 and some Flight models,
Apeks second stages incorporate a thermo-dynamic heat exchanger at the
second stage hose fitting. This patented (Patent No. U.S. Pat. 5,265,596)
feature is designed to draw in the surrounding water temperature, thereby
warming the valve mechanism and greatly reducing the possibility of
second stage freeze-up.
For important information about diving in cold water, refer to the section
titled, Diving in Cold Water, on page 27.
To Next Page
Loading...
Need help?
General
