1 Nitrox feed gas cylinder
2 Cylinder valve
3 Pressure gauge
4 Feed gas first stage regulator
5 Dosage chamber
6 Dosage mechanism with control linkage from bellows cover
7 Hinged bellows counterlung
8 Bellows weight
9 Exhaust valve with control linkage from bellows cover
10 Radial flow scrubber
11 Exhalation hose
12 Mouthpiece with dive/surface valve and loop non-return valves
13 Inhalation hose
14 Manual bypass valve
15 Low gas warning valve
The Interspiro DCSC is a semi-closed circuit nitrox rebreather manufactured by Interspiro of Sweden for military applications. Interspiro was formerly a division of AGA and has been manufacturing self-contained breathing apparatus for diving, firefighting and rescue applications since the 1950s.