Manufacturer: KOKEN LTD.
Model: S2-Y and S2-Z

Supplies clean air into the mask through a hose

Supplied-Air Respiratory Protective Equipment

A supplied-air respirator (airline mask) is a system of respiratory protective equipment that supplies clean air to the wearer through a hose. There are types that use an air compressor or blower as an air source, and there are also types that rely on the wearer’s own lung suction power. By correctly selecting the appropriate type from various supplied-air respirators, the device can be used in:

• “Oxygen-deficient environments”
• “Environments generating high concentrations of toxic substances”
• “Environments generating highly toxic substances”

Please accurately understand the working environment and use a supplied-air respirator with the appropriate performance specifications.

Pressure Demand Type Airline Mask

Possesses high protection performance

The pressure demand type maintains positive pressure inside the mask. Even if there is a gap at the face-to-mask seal, air will blow out from inside the mask to the outside, making it difficult for outside air to enter.

The pressure demand type airline mask is designed to supply the necessary amount of air according to the breathing rhythm, while maintaining positive pressure (pressure higher than ambient air) inside the mask regardless of whether inhaling or exhaling. Therefore, in the worst-case scenario where a gap occurs between the mask and the face, air will blow out from inside the mask, helping to prevent the ingress of outside air and allowing for safer work.

Focus on safety Pressure Demand Type

Even if a gap appears in the face contact area, air will blow out forcefully from there, helping to prevent the ingress of oxygen-deficient air, toxic gases, and harmful dust.

● Air supplied by the pressure demand valve maintains a positive pressure state inside the mask thanks to a balance spring at the exhalation valve unit.

Examples of supplied-air respirator applications

A mask that easily and snugly fits the face

High Scope V mask with HAWC lip structure

The product utilizes “HAWC lip※” technology with a wide, flexible, and specially curved face contact shape that creates a “suction cup effect” to enhance the seal. This provides high airtightness, a wide field of vision, and a lightweight design.

※Abbreviation for High Adaptable Wide Concave (the company’s proprietary face contact structure).

The HAWC lip face contact area can fit snugly to the face like a suction cup.

List of Types

For Sakai-type supplied-air respirators, please confirm the working environment, equipment, and number of users in advance to select the most suitable product for the workplace.

Compressed Air Supply (Using equipment such as an air compressor)

Airline Mask

The system is divided into 3 main groups:

1. Pressure Demand Type

• Features: Used for work in environments requiring high airtightness.
• Style: Facepiece Type.
• Example: Model 17HVG-ZW, etc.

2. Demand Type

Features: A type that supplies only the necessary amount of air to the wearer.

3. Constant Flow Type

Features: Used for continuous work over a long period within a fixed range.
Classification by style:

A. Facepiece Type

• Portable filter type: e.g., Model 12HV-Y, etc.
• Fixed filter type: e.g., Model 12D-Z, etc.

B. Hood Type

• Portable filter type: e.g., Model M5-Y, etc.
• Fixed filter type: e.g., Model S1-Z, etc.

C. Face Shield Type

• Fixed filter type: e.g., Model AFP-1.

Suction or Blowing of Ambient Air

No air compressor required
Hose Mask

The system is divided into 2 main groups:

1. Electric Blower Type

• Features/Applications: Used for plant equipment maintenance, working in manholes, pits, etc.
• Style: Facepiece Type.
• Example: Model SHV-105, etc.

2. Lung Power Suction Type

• Features/Applications: Used for tasks where a suitable breathing air source can be obtained within a 10m range.
• Style: Facepiece Type.
• Example: Model 1 H-C, etc.

DANGER

• Half-face masks, hoods, face shields, and lung power suction types (both full and half-face) MUST NOT be used in cases of short-term exposure to toxic substances that are immediately dangerous to life or health.
• Individuals with beards, sideburns, or bangs that interfere with the face seal, or with mustaches or chin hair that hinder the exhalation valve operation, MUST NOT use facepiece-type supplied-air respirators.

Airline Mask

Constant Flow Type – Hood Style

Protects respiration and prevents contact with toxic substances over a wide area including the entire head, shoulders, and chest.

DANGER

Half-face masks and hoods MUST NOT be used in oxygen-deficient environments or environments with a risk of oxygen deficiency. Please use a full-face mask in such cases.
Must not be used when the concentration of toxic substances is at IDLH (Immediately Dangerous to Life and Health) levels.

DANGER: Be sure to check the supplied air volume.

Minimum required air volume: 120L/min
Maximum hose length: 100M

Sakai Type – Model S2-Y / Model S2-Z

Type with sleeves (or shoulder shroud)
Complies with JIS T 8153 : 2002 standard
Assigned Protection Factor: 25

Auto-lock Coupler

Makes attaching and detaching the supplied-air respirator and the hose easy.

● Thanks to the auto-lock mechanism, the connection is designed to stay secure even under strong impact (such as jarring).
※ To ensure a more secure connection between threaded ends, please always use an adapter (sold separately) when connecting the joint.