Mailing List Archive

Mailing List: techdiver

Message Display

> Does any body know the required size for a dry suit inflation
> cylinder. I have been looking at the 0.3 and 0.4 A.P. Valve
> cylinder but will they be large enough for a typical mix dive?


I get about 4 to 6 dives from a 2 litre 200 bar cylinder, on 50-60m 
dives, using fairly thick undergarments. The amount of argon used will 
be roughly proportional to the absolute pressure on the bottom, assuming 
no fluctuations in bottom depth. Thus, a 0.4 litre cylinder (full) 
should be ok providing it is full and the dive is not too deep.

Bear in mind that if you are decanting into the 0.4l cylinder from a 
larger supply cylinder, you soon stop getting a full 200 bar as the 
pressure in the supply cylinder progressively drops. With my 2 litre 
cylinder, I am ok providing I can get about 50bar. Using a 0.4 litre 
cylinder, you will probably need a booster pump so as to get an 
acceptable pressure in it from a part-full supply cylinder.


David.

Navigate by Author: [Previous] [Next] [Author Search Index]
Navigate by Subject: [Previous] [Next] [Subject Search Index]

[Send Reply] [Send Message with New Topic]

[Search Selection] [Mailing List Home] [Home]