An early rebreather diver! (11.7 kB)

HEALTH WARNING: A rebreather is a serious and sophisticated life support device which is perfectly capable of killing you without warning. Always know your ppO2. Messing around with caustic and oxidising materials is dangerous. Reliance on one of these devices to keep you alive is foolhardly - but great fun!

WEALTH WARNING: Making your own rebreather may not be as cost-effective as it may first appear. In the long term, the money spent on buying small components can become significant. Add the amount of time spent on making and testing it, and you might be better off buying or modifying a commercial unit. Homebrew rebreather's (whilst not for the fainthearted) can, however, be a rewarding form of "adult entertainment"!

The P1SS™ pendulum rebreather

The P1SS rebreather (27.1 kB) Photo: P. Mulholland

The P1SS™ in action at Linley Caverns

The P1SS™ rebreather, a simple and cheap closed-circuit O2 pendulum rebreather using an old horsecollar bouyancy compensator (ABLJ), a bit of gas pipe and a modified power inflator. Although limited to 6 m depth the P1SS™ has done useful service as decompression tool where an oxygen rebreather can make economic (as well as logistical) sense.

[more details]

The D5™ sidemount rebreather

The D5 sidemount rebreather (24.0 kB) Photo: R. Stanton

D5™ at Hurtle Pot

"Doctor Duncan's Dodgy Diving Device" or the D5 is a closed circuit mixed gas rebreather with which can be worn sidemounted for cave diving in the U.K. and abroad. The D5 features mechanically metered oxygen addition with electronic monitoring of ppO2 and has been used for 3 hr dives and to over 65 m depth.

[more details] [latest version]

More information on its predecessors, dubbed the R1P through R4P are in the pages below:

R1P introduction video

- Construction details of the R2P™
- Construction details of the R3P™
- Construction details of the R4P™

The D6™ chestmount rebreather

The D6 chestmount rebreather (24 kB) Photo: M. Farr

D6™ in Pwll-y-Cwm

"Doctor Duncan's Decidedly Dodgy Diving Device" or the D6 is a closed circuit mixed gas rebreather with which can be worn on the diver's chest over a standard sidemount configuration.

[more details]

Video featuring the D6 in action at Wookey Hole Caves

Talk at TAC 2015 about scrubber performance

Useful links:

- CCRexplorers.com
- RebreatherWorld.com
- Jan Willem Bech's pages
- Fenzy Frenzy
- Topgun
- A.P. valves
- Clippard
- Maplin Electronics
- Narked at 90
- Otterbox
- Sub-Aqua Products
- Swagelok
- TecMe
- W+S Water Safety Europe GmbH

Last updated 10 October 2016
Please contact me if you have any questions, comments or suggestions.