Mailing List Archive

Mailing List: techdiver

Banner Advert

Message Display

From: Roderick Farb <rfarb@em*.un*.ed*>
Date: Mon, 25 Sep 1995 21:02:03 -0400 (EDT)
To: Halcyon Skinner <halcyon@ga*.ne*>
cc: techdiver@terra.net
Subject: Re: Composite SCUBA Tanks
Cylinder to meet DOT permit 9894; Service pressure 4500 psi; internal 
volume 285 cu inches; aver. cyl. weight 11.5 lbs w/wrap;test pressure 
7500 psi; capacity 45.09 cu ft.; fiber reinforced plastic overrap, S-2 
glass with epoxy resin; liner: aluminum alloy 6061; boutancy full -1.33 
lbs; half:0.37 lbs; empty 2.06lbs. 19.75 inches long from end-to-end with 
no valve. 5.25 inches in dia. Hydro testing: 5/3 service pressure every 
three years; max life 15 yr from date of mfr. Valve thread 0.875-14 UNF, 
use 75 ft. lbs. of torque. Hope this helps. Rod

On Mon, 25 Sep 1995, Halcyon Skinner wrote:

> <vonhagen@ma*.ls*.su*.fr*> postulated:
> >lower wheight also means less weight in water, and so more leads for
> >the belt?
> 
> Though this is true of objects of equal displacement, it does not
> necessarily hold true with composite tanks, which have significantly lower
> displacements than the average metal tank.  Can someone provide specs on
> weight, dispalacement, and bouancy characteristics of the composite 45's?
> 
> 
> --
> Send mail for the `techdiver' mailing list to `techdiver@terra.net'.
> Send subscription/archive requests to `techdiver-request@terra.net'.
> 
--
Send mail for the `techdiver' mailing list to `techdiver@terra.net'.
Send subscription/archive requests to `techdiver-request@terra.net'.

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]