BREATHING APPARATUS

摘要

Breathing apparatus comprises a housing (6) accommodating cylinders (8) of a pressurised breathable gas. In use, the housing (6) is carried on the back of a user, and gas from the cylinders (8) is supplied to the user, for example by way of a hood, through a tube (42). An auxiliary storage unit (24), comprising an auxiliary cylinder (28), is detachably fitted to the housing (6) at a docking location (14). The auxiliary storage unit (24) has an end cap (30) which accommodates a pressure reducing valve, a pressure gauge (50) and a shut off valve (48). The auxiliary storage unit (24) can readily be detached from the docking location (14) for use by the wearer of the breathing apparatus, or by another person. The auxiliary storage unit (24), when fitted at the docking location (14), forms an integrated unit with the housing (6).