Siebe Gorman Novus

 

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DATASHEET OXYGEN REBREATHER

Siebe Gorman Novus Oxygen breathing  app.

Date: 17 December 2002

Used in the Davis submerged decompression chamber 

JW. Bech

Manufacturer

Siebe Gorman

1945

Model

Novus

 

Land of origin

Great Britain

 

Special Note: 

 SCBA

 

User group

Military

 

Part no:

 

 

Working principle

Constant Mass Flow (CMF)

Manual Bypass

Gas type

Pure Oxygen

 

Cylinder volume

2 liter ?

 

Max. cylinder pressure

150 bar ?

 

Material of cylinder

steel

 

Counterlung inspire

4 liter

 

Counterlung exhale

4 liter

 

Dive time duration

?

 

Operating temperature

 

 

Magnetic signature

 

 

Weight ready to use in Air

 

 

Weight ready to use in water

 

 

MOD

?

 

Scrubber material

Alkali

 

Colour

Black

 

Price

 

 

Worn

Chest

 

Mouthpiece

Nose clip/strap

No shut-off valve

Backpack

-

 

Extra

Dual hose model

 

Extra

 

 

 

 

 

 

 

 

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!  

 

Info found: Deep diving and submarine operations by R.H. Davis

 

Origin: http://www.therebreathersite.nl

 

Info:

 

  Method of use: For the first eight minutes, the apparatus is used with the two-way cock (no 5 on the picture) in the horizontal  position. The diver thus inhales from the inhale bag (7) through the inhaling non-return valve (4) in the mouthpiece, and exhales via the mouthpiece non-return valve (3) straight to atmosphere. He replenishes the bag by using the by-pass valve on the reducing valve in the chamber. After eight minutes, he turns the cock(5) to the vertical position, and, while still inhaling as before, he now exhales through the exhaling bag (8), through canister (6) and back into the inhale bag. The oxygen supply is maintained by the automatic flow from the reducing valve. At the end of each stage of the decompression, or whenever the breathing bags become fully distended, the diver empties the exhale bag by pressing on it and squeezing gas out through the pressure release valve (9). He then “top-up” by working the by-pass again. This gets rid of the nitrogen or helium being given off by the body, and refreshes the oxygen in the system.  Breathing is carried out by the mouth only, the nose being closed by a clip supplied. Alternatively, an ori-nasal mask, to which a small microphone transmitter may be fitted, may be used in place of the mouthpiece and nose-clip.

 

 

 

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