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Sigma ASCmarine

Description
The Scott ACSm is an open circuit, self-contained, compressed air breathing aparatus. It consists of a back plate, carrying harness and pneumatic system, consisting of a cylinder connector, reducer, pressure guage, whistle and demand valve.
The ACS can be configured in a number of different ways with various size single cylinders. There are also a range of attachments available including Airline, Split Demand Valve Coupling ( SDC) .
The ACS is used in conjunction with a range of composite or steel cylinders and the choice of Vision 3, Panaseal, Panavisor or Promask PP facemask.
Applications
The Sigma ACSm is specifically designed as a Marine / Industrial SCBA, but is also suitable for providing respiratory protection for any IDLH environment.

Cylinder Optional
Carbon Composite :
- 4, 7 litre 300 bar ( Cyl - FWC 1300 RA) - ( 5, 2 kg fully gharge)
- 6, 8 litre 300 bar ( Cyl - FWC 1860 RA) - ( 7, 1 kg fully charge)
Steel Cylinder :
- 6 litre 200 bar ( Cyl 1200 RA) - ( 8, 8 kg fully charge)
- 6 litre 300 bar ( Cyl 1640 bar) - ( 11, 9 kg fully charge)

Approval Information
  - CE marked in accordance with
    EN 137: 2006: Class 1
  - AS1716
  - MED

Technicial Data Sheet

Pressure Reducing Valve : Nickel Plated Brass
Rust Tube ( Cyls) : Brass
Reducing Valve Seat : Stainless Steel
HP Pressure Guage : Stainless Steel, Polycarbonate Lens
HP Pressure Guage Cover : Neoprene
MP Air Supply Hose Fittings : Nickel Plated Brass
Facemask : Neoplene, Silicone or Procomp
Facemask Visor : Polycarbonate
MP Air Supply Hose : EPDM Cover, fabric braid reinforcement, EPDM liner
HP Air Hose : PTCFE liner, stainless steel braiding, Estane sleeve
Valve Handywheel ( Clys) : Glass filled Polyamide / TPE
Harness : Flame retardant Polyester
Backplate : Fabric covered Polyamide
Backpad : Flame retardant cross linked polyolefin closed cell foam covered in a viscose aramid fabric
Cylinder Band : Flame retardant polyester with Velcro
Strap Buckes : Glass filled polyamide
Cylinder : Steel or Composite
Cylinder Valve : Nickel Plated Brass
Demand Valve Casing : Glass filled Polyamide

Major Components

Tempest Demand Valve
Compact positive pressure demand valve featuring servo-assisted, tilting diaphragm mechanism with low inspiratory resistance and responsive dynamic performance, automatic first breath actuation and hands free bypass facility. Components injection moulded from polyamide and acentyl with rubber seals and diaphragms.
First breath activation -20 to -30 mbar
Peak flow performance in excess of 500 litres/ minute
Bypass flow 150 litres/ minute nominal
Static positive pressure 1.0 to 4.0 mbar
Reducing Valve
First stage pressure reducing valve featuring non-adjustable, spring loaded piston mechanism and outlet supply protected by pressure relief valve.
Valve body and cap machined from nickel plated brass with stainless steel spring and hose retainer U-clips.
Outlet Pressure
200 bar inlet 5.5 to 9.5 bar
300 bar inlet 6.0 to 11.0 bar
Pressure relief valve protected approx 13.5 bar
Flow restrictor to gauge supply hose