Manufacturer: KOKEN LTD.
Model: 17 HV Series

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 equipment can be used in:

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

Please accurately assess 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 structured 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 facepiece shape that creates a “suction cup effect” to enhance the seal. This provides high airtightness, a wide field of vision, and lightweight design.

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

The HAWC lip face contact area fits 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.

Ambient Air Suction or Blowing

No air compressor required
Hose Mask

The system is divided into 2 main groups:

1. Electric Blower Type

• Features/Applications: Used for repairing plant equipment, 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 reached 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 operation of the exhalation valve, MUST NOT use facepiece-type supplied-air respirators.

Dual-Purpose Airline Mask (Combined Air Supply & Filtration)

Allows for use of air showers or evacuation/escape without having to remove the mask. (Note: This is completely different from airline masks combined with a compressed air cylinder).

Cartridge for Dual-Purpose Air Supply & Filtration

When the pressure of the supplied air drops, the device automatically switches and operates as a filtration-type respiratory protective device (gas mask/dust mask).

The image shows Model 17 HVG-Z.

Sakai Type – Model 17 HVG-ZW (With Warning Whistle)

(Stationary Filtration Type) Complies with JIS T 8153:2002 standard
Assigned Protection Factor: 1000
[Dioxin Protection] [PCB Protection]
Replacement Cartridge: Filter Model RDG-5
Suitable for environments with dust and low concentrations of organic gases, as well as Dioxin protection measures.

Model 17 HVG-Z is also available without a whistle (warning device).

DANGER

When the supplied air volume decreases, the user will switch to breathing through the dust/gas cartridge, therefore:

● MUST NOT be used in oxygen-deficient environments or environments with a risk of oxygen deficiency.
● MUST NOT be used if the gas or dust conditions fall under the following cases:

• Cases where the type of gas cannot be neutralized by the organic gas cartridge.
• Cases where the type or concentration of toxic gas is unknown.
• Cases where the toxic substance concentration is at IDLH levels (Immediately Dangerous to Life and Health).
• Cases where there is a mixture of gases with different properties.

Sakai Type – Model 17 HVF-ZW (With Warning Whistle)

(Stationary Filtration Type) Complies with JIS T 8153:2002 standard. Assigned Protection Factor: 1000
[Asbestos Removal]
Replacement Cartridge: Alpha Ring Filter Model RD-6
Suitable for dust environments – Compatible with Level 1 asbestos removal measures.

Model 17 HVF-Z is also available without a whistle (warning device).

DANGER

When the supplied air volume decreases, the user will breathe through the filter cartridge, therefore:

• ● MUST NOT be used in oxygen-deficient environments or environments with a risk of oxygen deficiency.
• ● MUST NOT be used in cases where toxic gases are present.

Sakai Type – Model 17 HVM-ZW (With Warning Whistle)

(Stationary Filtration Type) Complies with JIS T 8153:2002 standard. Assigned Protection Factor: 1000
[Soil Contamination Measures]
Replacement Cartridge: Absorbent Cartridge Model RDG-7
Suitable for specific toxic substances in soil contamination.

Model 17 HVM-Z is also available without a whistle (warning device).

DANGER

When the supplied air volume decreases, the user will switch to breathing through the dust/gas filter cartridge, therefore:

● MUST NOT be used in oxygen-deficient environments or environments with a risk of oxygen deficiency.
● MUST NOT be used if the gas or dust conditions fall under the following cases:

• Cases where gas cannot be neutralized by the Model RDG-7 cartridge (Please refer to the gas mask catalog).
• Cases where the type or concentration of toxic gas is unknown.
• Cases where the toxic substance concentration is at IDLH levels.
• Cases where there is a mixture of gases with different properties (However, the product can still be used for specific toxic substances regulated under the Soil Contamination Countermeasures Act).

SAFETY DESIGN

Airtight Check Valve Structure – Super Coupler
The connection part of the medium-pressure air hose uses “Super Coupler” with a check valve structure (both plug and socket ends have backflow prevention structures) and is equipped with a locking mechanism. This is a safety design that prevents ingress of dirt, etc., from the coupler unit even when the hose is disconnected.

Applicable Products:
Model 17 HVG-ZW, Model 17 HVF-ZW, Model 17 HVM-ZW, Model 17 HVG-Z, Model 17 HVF-Z, Model 17 HVM-Z