Last updated 1 June 2002
| 2No 22mm x 22mm x 15mm Polypipe reducing tees for connecting to counterlungs | £5.52 |
| Hoselok 1/4 Turn flow control valve for mouthpiece shutoff valve | £5.47 |
| 4No 22mm Polypipe tank connectors for watertight bulkhead connections to scrubber cannister and counterlungs | £8.24 |
| 3m 22mm dia grey barrier pipe for hard pipework | £7.34 |
| 2No 22mm to 15mm reducer pieces -- for connecting between T's and counterlungs | £1.12 |
| Rubber Washers -- for non-return valve assemblies on mouthpiece | £0.51 |
| 1m 19mm dia flexible corrugated hose for main breathing hoses | £3.12 |
| 3m 25mm dia Hoselok pond hose because the corrugated hose was crap | £8.98 |
| 2No Armitage rubber diaphragms for non-return valve assemblies | £3.26 |
| 2 Part epoxy glue | £6.48 |
| 2No 22mm Polypipe elbows | £4.24 |
| 2No 32mm dia soil pipe couplers for non-return valve assemblies | £1.16 |
| Pack of 3 grinding stones | £3.38 |
|
TOTAL
|
£58.82 |
OK, we are slightly overbudget. Added to that, I still have the counterlungs to make/buy/steal as well as the housings for them. On top of that, there is still the gas injection system, the dumps and a harness. The injection system for the prototype O2 version will be minimal cost as it will simply be a BCD hose teed into the loop with a Scubapro AIRII on the end, all the parts I already have.