Configured with a Y Piece (Y2C) in the medium pressure demand valve hose, allowing connection of two CEN-standard facemasks or devices
Features the Tempest positive pressure demand valve with servo assisted tilting diaphragm design, automatic first breath activation, low inspiratory resistance, and hands free bypass
Simple, rugged composite backplate and unpadded Kevlar® harness for easy cleaning and durable use
Stainless steel swivel hose fittings, high burst pressure hoses, heat resistant pressure gauge with warning whistle; robust pneumatic safety design
Compatible with 4.7 to 9 /L Scott cylinders at 200 /bar or 300 /bar pressure ratings
Supplied without facemask, maximizing flexibility for dual-mask or modular use
The 3M™ Scott™ ProPak Sigma SCBA (Article 2027154) is built to MED standards for firefighting and industrial applications. It includes a medium pressure Y Piece (Y2C) in the demand valve hose, enabling simultaneous connection of two CEN-compatible masks—for example, shared use in rescue teams or training scenarios. The unit features the high-performance Tempest demand valve, a minimalist composite backplate, and Kevlar® webbing harness that resists flame and is easy to maintain. Other core features include robust hoses, swivel fittings, and a reliable pressure gauge with whistle. This variant is supplied without facemask, providing installation flexibility based on user needs.
Typical Properties
| Property | Value |
|---|---|
| Brands | 3M™ Scott™ |
| Configuration | Y Piece (2 CEN socket) in demand valve hose (Y2C) |
| Demand Valve Type | Tempest positive pressure with auto first breath and bypass |
| Airline Attachment | None |
| Split Demand Valve Coupling | No |
| Cylinder Compatibility | 4.7 /L–9 /L, 200 /bar or 300 /bar Scott cylinders |
| Supplied Mask | Not included |
| Harness Material | Kevlar® blend webbing, Proban® padding |
| Backplate | Glass/carbon-filled nylon composite |
| Hoses & Connectors | Stainless steel swivel fittings; 16 /bar MP (burst ≥ 80 /bar); 450 /bar HP (burst ≥ 800 /bar) |
| Pressure Gauge & Whistle | Bourdon-tube dial, polycarbonate lens, heat and impact resistant, whistle at ~55 /bar |
| Weight (approx.) | ~2.6 /kg (apparatus only, excluding cylinder and mask) |
| Size (with 6 /L, 200 /bar cylinder) | ~630 /mm × /285 /mm × /215 /mm |
| Applications | Firefighting, marine rescue, industrial safety, IDLH shared air scenarios |
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