Equipped with a Tempest positive-pressure demand valve offering auto-zero first-breath actuation, low breathing resistance, and hands free bypass
Split Demand Valve Coupling (SDC) enables dual-user or quick cylinder switching capability
Lightweight composite backplate with minimal padding for cost effective, efficient design
Kevlar® blend harness with PROBAN® padding for flame resistance and easy maintenance
Stainless steel swivel fittings and high burst pressure hoses for robust pneumatic safety
Compatible with 4.7 /L to 9 /L Scott cylinders at 200 /bar or 300 /bar ratings
Supplied without facemask, offering flexibility in mask selection and modular use
The 3M™ Scott™ ProPak Sigma is a Type 2 open-circuit self-contained compressed-air breathing apparatus with an unpadded carrying harness.
Designed as a cost-effective solution with minimal padding, the 3M™ Scott™ ProPak Sigma is a compliance set for use in marine or industrial firefighting environments. The ProPak Sigma breathing apparatus consists of a backplate, unpadded carrying harness, and a pneumatic system that contains a cylinder connector, reducer, pressure gauge, whistle and demand valve. Designed for user convenience with adjustable shoulder straps, a wraparound harness and large buckles for easy operation with gloved hands and fast donning and doffing.
Typical Properties
| Property | Value | 
|---|---|
| Brands | 3M™ /Scott™ | 
| Harness Material | Kevlar® blend webbing with PROBAN® padding | 
| Demand Valve Type | Tempest positive pressure with auto first breath, bypass | 
| Split Demand Valve Coupling | Yes (SDC) | 
| Airline Attachment | None | 
| Cylinder Compatibility | 4.7 /L–9 /L at 200 or 300 /bar Scott cylinders | 
| Supplied Mask | Not included | 
| Weight (approx.) | ~2.6 /kg (apparatus only, excluding cylinder/mask) | 
| Application | Industrial firefighting, marine rescue, IDLH environments | 
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