SCBA set - 3M Scott Sigma - (set without cilinder) MED/SOLASThe 3M™ Scott™ ProPak Sigma is a Type 2 open circuit, self-contained, compressed air breathing apparatus. It consists of a back plate, unpadded carrying harness and pneumatic system, containing a cylinder connector, reducer, pressure gauge, whistle and demand valve.The ProPak Sigma can be configured in a number of different ways with various size single cylinders. There are also a range of variants available including Airline (AC), Split Demand Valve Coupling (SDC) and Y Piece configurations (Y2C).The ProPak Sigma is used in conjunction with a range of composite or steel cylinders and the choice of Vision 3 or Promask PP facemask.Applications The 3M™ Scott™ ProPak Sigma is designed as a marine/industrial fire-fighting SCBA, but is also suitable for providing respiratory protection in any IDLH (Immediately Dangerous to Health and Life) environment.Maintenance/cleaning/servicing Cleaning should only be carried out as specified in the user instructions. Maintenance and servicing must only be performed by trained personnel following the procedures in the service and maintenance manual