Details

---

Details

Highlights

• 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