Correction:
That would work, but you would have only the mass of air that fit the tank at *ambient pressure,* which is a small fraction of what can be stuffed in there if air is pumped in.It seems like one could use a gear pump to pump water into a high
pressure cylinder, the water would compress the air in the cylinder.
That way you would avoid any problems with oil particles. Just a thought.
Brian
On Thu, Mar 17, 2011 at 11:14 AM, Daniel D. Lance <lanceind@gmail.com<mailto:lanceind@gmail.com>> wrote:<http://www.airspeedpress.com/> and order a copy of their book
Its easy to convert a regular low pressure air compressor for hookah
purposes. If you have an oil lubricated type take it apart and
thoroughly clean out all the old oil . Reassemble it and refill it
with a monolec type oil made for breathing air compressors. You can
buy this oil at a dive shop or at commercial diving supply. Remember
to place some type of filter on the air flow out of the compressor
to trap any oil mist or droplets that might come down the breathing
air hose. You don't want oil in your lungs. It causes a very nasty
type of pneumonia.
Of course there are lots of cheap oil less compressors available
that would also work well for this purpose.
A high pressure compressor for filling scuba tanks is a completely
different animal. Unless you have access to a well equipped machine
shop making your own will be a challenge.
If you really need to fill your own scuba bottles and you are on a
budget then I would recommend going to www.airspeedpress.com
called " Improvised and Low Cost HP Gas Boosters".While I don't
recommend that you build your own booster to pump oxygen all of the
designs in the book will work well for air or inert gases for
technical diving.
Dan Lance
On 3/17/2011 8:06 AM, Stewart Gardiner wrote:
Hi guys, I’m fairly interested in SCUBA… as well as being VERY
interested in subs… ive got a fairly good understanding of air
compressor types etc… but does anyone here have any knowledge on
the principal workings of a hookah or scuba tank filling type
compressor? Its just something that ive never quite understood,
and ive seen scuba refill compressors cost upwards of $2500AUD..
so I thought why not make one! J
One of the pre-requisites is an oil-less lubrication system for
the piston/vanes? Obviously oil vapour in the breathing air isn’t
a good thing J
Anything else anyone can put forward to further my knowledge?
TIA Stew
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 53
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************
************************************************************************
************************************************************************
************************************************************************
The personal submersibles mailing list complies with the US Federal
CAN-SPAM Act of 2003. Your email address appears in our database
because either you, or someone you know, requested you receive messages
from our organization.
If you want to be removed from this mailing list simply click on the
link below or send a blank email message to:
removeme-personal_submersibles@psubs.org
Removal of your email address from this mailing list occurs by an
automated process and should be complete within five minutes of
our server receiving your request.
PSUBS.ORG
PO Box 53
Weare, NH 03281
603-529-1100
************************************************************************
************************************************************************
************************************************************************