SIGMA-2 is a self contained positive pressure breathing apparatus complete with Promask positive pressure facemask in black Neoprene, moulded composite backplate with fully adjustable harness and infinitely adjustable Kevlar webbing cylinder band.

The fully adjustable body harness is fabricated from a flame retardent Kevlar blend webbing. Buckles and fittings are injection moulded from a corrosion resistant polyamide. The two stage pneumatic system features a first breath activated positive pressure demand valve, a first stage pressure reducing valve with an integral 200/300 bar cylinder connector and a shoulder mounted pressure gauge with 55 bar whistle.

The SIGMA-2 Type 2 will accept all Scott B.A. cylinders Apparatus is CE Marked to EN137:2006 Type 2 and MED approved PROMASK FACEMASK Promask incorporates a wide panoramic visor to maximise the field of vision and a front mounted speech diaphragm for easy communication with colleagues. An optional hard coated visor is available to enhance resistance to scratching.

The clear inner mask increases wearer acceptability and presents a user-friendly appearance to others. CYLINDER – 60 Minute BRAND USED BY HONEYWELL, FENZY AND FANGZHAN, SPHERIAN SCBA’S 9 LITER CARBON FIBRE CYLINDER DIAMETER – 174 MM LENGTH – 558 MM WEIGHT – 4.9 KGS PRESSURE – 300 BAR DURATION – 60 MINUTES