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DATASHEET OXYGEN
REBREATHER
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Black Water Nymph
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Date: 01 October 2004
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- Database oxygen rebreathers by: J.W. Bech
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- Manufacturer
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- Uwe Bush
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- Homebuild
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Model
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- Black Water Nymph
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- (former Oxyfun)
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Land of origin
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- Germany
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Special Note:
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Parts from RGU-FM, IDA71
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User group
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Civil
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Part no:
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- Working principle
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Constant Flow
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- Gas type
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Pure oxygen
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- Cylinder volume
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1l
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- Max. cylinder pressure
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200 bar
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- Material of cylinder
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steel
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- Counterlung inspire volume
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2,7
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- Counterlung exhale volume
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2,7
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- Dive time duration
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180 min
(theoretical)
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- Operating temperature
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- Magnetic signature
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magnetic
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- Weight ready to use in Air
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14,5 kg with
scrubber and trim
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- Weight ready to use in water
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neutral
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- MOD
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Oxygen depth
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- Scrubber material
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Spherasorb, 2 kg
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- Colour
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black
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- Price
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?
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- Worn
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Chest/back/side
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- Mouthpiece shut off valve
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y
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- Backpack
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y
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- Extra
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- Extra
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- Additional information:
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- Email address owner
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- If you have any information to add this sheet
please mail it to
jw.bech@quicknet.nl
References to source and names will always be added!
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- Info found:
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- Origin:
http://www.therebreathersite.nl
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Info:
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My Black water-nymph device
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Since years I want to dive with
a rebreather in style from
Medi- Nixe
and Lt.
Lund.
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Simplicity and lightweight from
this historical gear was the point of interest for me.
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But the problem for me as
homebuilder was to make the scrubber in the counter lung, the frame
and the
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lid without industrial machines.
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So I decided to build two back
mount counter lungs, easy to made, and to use the scrubber from IDA
71.
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It was a good occasion, to try
out the scrubber from my IDA with split lungs.
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The lungs are glued from
rubberized canvas. It's a Russian material and very stable.
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To protect the lungs and take
the buoyancy forces, they are both mounted in a piece of rain pipe
with holes.
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The lungs itself are mounted
with a hose clamp at a rain pipe-end-piece (100 mm).
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Fittings from hoses to counter
lungs are from plastic water drainage gear, app. 1“,
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and mounted at the rain
pipe-end-pieces.
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The over pressure valve is from
a Viking dry suit and mounted in the exhale lung . But you need not
really one.
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As oxygen supply in the inhale
lung I used a simple plastic hose (for petrol or car window washer).
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The connection- and breathing
hoses I made with Russian gasmask hoses. They are extremely durable,
but you have a little more breathing resistance. But it's diveable ;))
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Regulator, nozzle, and bypass –
I used the complete unit from German
RGU/FM. Fini
is modified from a HYDROMAT- fini and from a pressure-control-device
from RGU-FM.
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Mouthpiece is also from RGU-FM.
It`s modified with a shut-off-valve. Both mouthpiece and fini are
made by Martin Klokosch (
www.nva-militaria.de ).
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Scrubber, rain pipes, and oxygen
source are mounted in a case from black Cordura. A chest- case
is good for app. 2 kg trim weight, mounted at a plastic- plate. My
preference was, to made all so easy like possible, but with a maximum
from durability, reliability, and functionality.
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It’s easy to dive (but only with
wetsuit), and easy to prepare before diving. To dry counter lungs
after diving, you must use a cold hair-dryer with an adapter for the
breathing hoses.
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I think, this construction is
good enough for a oxygen breather and depths from max. 10m. I know,
it’s not for combats and parachute jumpers, but enough to me J.
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Uwe Busch
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Uwe, thank you very much for letting
me add this very nice rebreather to my oxygen rebreather database!
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