SIGMA-2 SCBA Kit with Vision3 Mask is a positive-pressure self-contained breathing apparatus designed for professional respiratory protection in suitable fire-fighting, industrial, marine, rescue and confined-space applications. The Sigma-2 combines a lightweight backplate and adjustable harness with a high-performance pneumatic system and Vision 3 positive-pressure full-face mask.

The 3M Scott Sigma-2 SCBA uses a first-breath activated demand valve with bypass and a two-stage pneumatic system. The Vision 3 facemask provides a wide field of view and is designed for positive-pressure respiratory protection. Available 3M documentation identifies the Sigma 2 T2 SCBA for marine, industrial, confined-space entry, rescue and industrial firefighting applications. :contentReference[oaicite:0]{index=0}

Key Features

• SIGMA-2 SCBA configuration
• Vision 3 positive-pressure full-face mask
• Self-contained breathing apparatus
• Positive-pressure respiratory protection
• Proven high-performance pneumatic system
• Compact first-breath activated demand valve
• Integrated demand-valve bypass
• Lightweight ergonomic backplate
• Type 2 harness design
• Flame-retardant Kevlar blend harness webbing
• Kevlar cylinder band
• Shoulder-mounted pressure gauge
• 55 bar warning whistle
• Corrosion-resistant nickel-plated components
• Simple operating design
• Wide range of compatible 200 and 300 bar cylinders

Positive-Pressure SCBA Protection

The SIGMA-2 SCBA Kit with Vision3 Mask is designed to supply the wearer with breathing air independently from the surrounding atmosphere. Its positive-pressure configuration helps provide respiratory protection in environments where the surrounding air may contain smoke, hazardous contaminants or insufficient oxygen.

SCBA equipment is intended for trained users and should be selected according to the specific hazards, operational procedures and applicable respiratory protection requirements of the workplace.

Vision 3 Positive-Pressure Mask

The Vision 3 SCBA Mask is a positive-pressure full-face mask designed for use with compatible Scott SCBA systems. Its visor provides a wide field of view, while the face seal and internal mask arrangement are designed to support effective respiratory protection.

Available technical information identifies the Vision 3 as an EN 136-compliant full-face mask for compatible SCBA applications. The mask also includes a speech diaphragm to support communication while wearing the facepiece. :contentReference[oaicite:1]{index=1}

Wide Field of View

The Scott Vision 3 Facemask uses a multi-curvature visor designed to provide a broad viewing area. Good visibility is important during firefighting, rescue and industrial response activities because users need to monitor their surroundings while operating equipment.

The visor and facepiece should be kept clean and inspected regularly to maintain clear visibility during use.

First-Breath Activated Demand Valve

The Sigma-2 SCBA uses a compact demand valve that activates when the wearer takes the first breath. This design provides breathing air through the regulator when the system is being used.

The demand valve also incorporates a bypass function. The bypass can provide a continuous flow of air in the event of a regulator malfunction in a no-flow condition. According to the Sigma-2 user documentation, bypass use consumes cylinder air rapidly and is intended for escape from the hazardous area. :contentReference[oaicite:2]{index=2}

Two-Stage Pneumatic System

The SIGMA-2 SCBA Kit uses a two-stage pneumatic system. The first stage reduces cylinder pressure while the demand valve provides breathing air to the wearer at the required pressure.

This pneumatic arrangement is designed to provide controlled breathing air delivery while maintaining the positive-pressure characteristics of the SCBA system.

Lightweight Ergonomic Backplate

The Scott Sigma 2 SCBA features an ergonomically designed lightweight backplate. The backplate supports the breathing apparatus components while the harness allows the equipment to be adjusted to the wearer.

The design is intended to provide a practical configuration for professional users who may need to carry the apparatus during demanding fire-fighting or industrial operations.

Adjustable Harness

The Sigma-2 SCBA Kit with Vision3 Mask uses an adjustable harness designed to help secure the breathing apparatus against the user’s body. The harness incorporates flame-retardant Kevlar blend webbing, while the cylinder band also uses a Kevlar blend construction in the documented Sigma-2 configuration. :contentReference[oaicite:3]{index=3}

Correct adjustment is important because the SCBA should remain securely positioned during movement. Users should follow the manufacturer’s fitting and operating instructions.

Pressure Gauge and Warning Whistle

The 3M Scott Sigma-2 SCBA includes a shoulder-mounted pressure gauge for monitoring cylinder pressure. A low-pressure warning whistle is specified at approximately 55 bar in the available Sigma-2 documentation.

The warning system provides an important indication that the remaining cylinder pressure is approaching the specified warning level. Users must follow their organization’s breathing-apparatus procedures when the warning signal activates.

Compatible Cylinders

The Sigma-2 SCBA is designed to accommodate a range of compatible cylinders. Available product information identifies support for 200 bar and 300 bar steel or carbon-fibre cylinders. :contentReference[oaicite:4]{index=4}

Specific cylinder capacity and construction depend on the selected configuration. The cylinder should always be compatible with the SCBA and approved for the intended operating pressure.

Vision 3 Mask and Sigma-2 Compatibility

The Sigma-2 Vision 3 configuration combines the Sigma-2 breathing apparatus with a Vision 3 positive-pressure full-face mask. 3M’s product documentation lists the Vision 3 mask as a compatible component for the Sigma 2 T2 compliance set. :contentReference[oaicite:5]{index=5}

The exact mask size and harness configuration should be confirmed before ordering because Vision 3 is available in different configurations and sizes.

Firefighting and Industrial Applications

The SIGMA-2 SCBA Kit with Vision3 Mask is designed for professional applications including industrial firefighting, marine environments, rescue activities and confined-space entry where appropriate respiratory protection is required. 3M’s current product information specifically lists the Sigma-2 Type 2 SCBA within its respiratory protection range. :contentReference[oaicite:6]{index=6}

Its use should be based on a documented hazard assessment and the procedures established by the responsible fire, rescue or industrial safety organization.

Marine and Confined-Space Use

The Scott Sigma 2 SCBA is also identified for marine and confined-space applications. These environments can present respiratory hazards that require independent breathing-air equipment.

Before using SCBA in a confined space, the complete entry and rescue procedure should be established by trained personnel. The SCBA itself should not be treated as the only safety measure for confined-space operations.

Corrosion-Resistant Components

The Sigma-2 SCBA Kit uses nickel-plated components designed to provide corrosion resistance. This feature can be useful in demanding professional environments where equipment may encounter moisture and other challenging conditions.

Regular inspection and appropriate cleaning remain important even when corrosion-resistant components are used.

Professional Respiratory Protection

The Firefighter SCBA Kit is designed to provide respiratory protection where conventional air-purifying respirators are not appropriate. Because the SCBA carries its own breathing-air supply, it can be used in environments where the surrounding atmosphere cannot safely be relied upon for breathing.

Users must be properly trained in SCBA donning, operation, emergency procedures, cylinder management and maintenance before using the equipment operationally.

Inspection and Maintenance

The SIGMA-2 SCBA should be inspected and maintained according to the manufacturer’s instructions and the requirements of the organization responsible for the equipment.

Before use, users should check the face mask, harness, backplate, regulator, hoses, pressure gauge, warning whistle, cylinder connections and other relevant components. Any equipment showing damage or malfunction should be removed from service and assessed by qualified personnel.

Storage

The Scott Sigma 2 SCBA should be stored in suitable clean and dry conditions and protected from unnecessary exposure to heat, chemicals, moisture and physical damage.

The Vision 3 mask should also be stored in a way that protects its visor, face seal and other components from contamination or damage.

Training and Safe Use

The SIGMA-2 SCBA Kit with Vision3 Mask is professional respiratory protection equipment and should only be used by personnel who have received appropriate training. Users should understand the equipment’s operating procedure, warning systems, limitations and emergency actions.

Regular training and practical drills can help users remain familiar with the equipment and the procedures required during emergency operations.

Technical Specifications

• Product: SIGMA-2 SCBA Kit with Vision 3 Mask
• Type: Self-contained breathing apparatus
• Breathing system: Positive pressure
• Facemask: Vision 3 positive-pressure full-face mask
• Demand valve: First-breath activated with bypass
• Backplate: Lightweight ergonomic design
• Harness: Type 2 adjustable harness
• Harness material: Kevlar blend flame-retardant webbing
• Cylinder band: Kevlar blend webbing
• Pressure gauge: Shoulder-mounted
• Warning whistle: 55 bar
• Cylinder compatibility: 200 bar and 300 bar steel or carbon-fibre cylinders, depending on configuration
• Applications: Marine, industrial, confined-space entry, rescue and industrial firefighting
• Vision 3 mask standard: EN 136 on applicable configuration
• SCBA standard: EN 137 Type 2 on applicable configuration

Certification and Configuration

3M’s published Sigma 2 T2 documentation identifies certification to AS/NZS 1716:2012 and EN 137:2006 Type 2 MED for the specified Sigma 2 T2 configuration. The exact certification applicable to the product supplied should be verified against the model, configuration and market before purchase. :contentReference[oaicite:7]{index=7}

The Vision 3 facemask is separately documented as a positive-pressure face mask for SCBA applications, with EN 136 certification identified in available technical material. :contentReference[oaicite:8]{index=8}

Why Choose SIGMA-2 SCBA Kit with Vision3 Mask?

The SIGMA-2 SCBA Kit with Vision3 Mask combines a positive-pressure Sigma-2 breathing apparatus with the Vision 3 full-face mask to provide a professional respiratory protection configuration. Its lightweight backplate, adjustable harness, first-breath activated demand valve, pressure gauge and warning whistle are designed for demanding professional environments.

The system is documented for applications including industrial firefighting, marine work, rescue and confined-space entry. Proper training, fitting, inspection and maintenance are essential for safe SCBA operation.

FAQs

What is the SIGMA-2 SCBA Kit with Vision3 Mask?
It is a positive-pressure self-contained breathing apparatus configured with a Vision 3 full-face mask for professional respiratory protection.

What does SCBA stand for?
SCBA stands for Self-Contained Breathing Apparatus. It provides the wearer with an independent breathing-air supply.

What type of mask comes with the Sigma-2 configuration?
This configuration uses the Vision 3 positive-pressure full-face mask.

Is the Sigma-2 a positive-pressure SCBA?
Yes. The Sigma-2 is a positive-pressure breathing apparatus designed for compatible professional respiratory protection applications.

How does the Sigma-2 demand valve work?
The compact demand valve is first-breath activated, supplying breathing air when the wearer begins inhaling. It also includes a bypass function.

What is the purpose of the demand-valve bypass?
The bypass can provide a continuous flow of air if the regulator develops a no-flow malfunction. It consumes cylinder air rapidly and is intended for emergency escape according to the user documentation.

What cylinder pressures are compatible with Sigma-2?
Available Sigma-2 information identifies compatibility with 200 bar and 300 bar steel or carbon-fibre cylinders, depending on the configuration.

Does the Sigma-2 kit include a cylinder?
The exact contents depend on the specific kit configuration. Sigma-2 SCBA units are also sold separately from cylinders, while certain complete kit configurations include a charged cylinder. Confirm the supplier’s included-items list before ordering.

What is the low-pressure warning level?
The Sigma-2 documentation identifies a warning whistle at approximately 55 bar.

What type of harness does the Sigma-2 use?
The Sigma-2 uses an adjustable Type 2 harness with flame-retardant Kevlar blend webbing.

Is the Vision 3 mask suitable for SCBA?
Yes. Vision 3 is documented as a positive-pressure full-face mask for compatible SCBA applications.

Does the Vision 3 mask provide a wide field of view?
Yes. Its multi-curvature visor is designed to provide a broad field of vision.

Where can the Sigma-2 SCBA be used?
The documented applications include marine, industrial, confined-space entry, rescue and industrial firefighting environments.

What standard does the Sigma-2 T2 meet?
The published Sigma 2 T2 documentation identifies EN 137:2006 Type 2 MED and AS/NZS 1716:2012 certification for the specified configuration.

What standard does the Vision 3 mask meet?
Available technical documentation identifies the Vision 3 full-face mask as EN 136 compliant for the applicable configuration.

Who should use the SIGMA-2 SCBA?
It should be used by trained personnel who are authorized and qualified to operate SCBA equipment in the relevant workplace or emergency environment.

How should the Sigma-2 SCBA be maintained?
The apparatus should be inspected, cleaned, serviced and maintained according to the manufacturer’s instructions and applicable organizational procedures.

Can the Sigma-2 SCBA be used without training?
No. SCBA is specialized respiratory protection equipment and requires appropriate training in fitting, operation, emergency procedures and maintenance.